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        135 Permanent API jobs in Hertfordshire + 20 miles

        Engineering Manager

        Stepstone UK
        Southwark, South East London (SE1), SE1 0TA
        Competitive salary
        Company Description - At The Stepstone Group, we have a simple yet very important mission: The right job for everyone. Using our data, platform, and technology, we create opportunities for jobseekers and companies around the world to find a perfect match in fair and equitable way. With over 20 brands across 30+ countries, we strive for fair and unbiased hiring. Join our team of 4,000+ employees and be part of reshaping the labour market and becoming the worlds leading job platform. Job Description - Join our team and youll be responsible for providing technical leadership to all engineering and development areas across your domain, developing and executing an engineering strategy aligned to the portfolio and global tech strategies. Working in the Design and Platform Performance domain, you willlead the technology side of web and mobile analytics for a platform with ov
        Company Description - At The Stepstone Group, we have a simple yet very important mission: The right job for everyone. Using our data, platform, and technology, we create opportunities for jobseekers and companies around the world to find a perfect match in fair and equitable way. With over 20 brands across 30+ countries, we strive for fair and unbiased hiring. Join our team of 4,000+ employees and be part of reshaping the labour market and becoming the worlds leading job platform. Job Description - Join our team and youll be responsible for providing technical leadership to all engineering and development areas across your domain, developing and executing an engineering strategy aligned to the portfolio and global tech strategies. Working in the Design and Platform Performance domain, you willlead the technology side of web and mobile analytics for a platform with ov
        more
        Are you a Python Developer, keen help shape the technology that powers over 5,000 schools across the UK? Are you a Python Software Engineer who’s excited by the idea of building intuitive, high-impact web applications that truly make a difference to the education sector? If you love writing clean code, collaborative development and solving real-world problems, this is your chance to work on meaningful products in a modern engineering environment. Role: Python Developer, Python Software Engineer, Software Engineer, Software Developer - Location: 100% work from home - Salary: £35k - £42k base salary + great benefits - You will design and maintain Python and Django applications, craft reliable REST APIs, optimise MySQL-backed systems and contribute to product features from concept to deployment. You will work closely with other developers, designers and product managers
        Are you a Python Developer, keen help shape the technology that powers over 5,000 schools across the UK? Are you a Python Software Engineer who’s excited by the idea of building intuitive, high-impact web applications that truly make a difference to the education sector? If you love writing clean code, collaborative development and solving real-world problems, this is your chance to work on meaningful products in a modern engineering environment. Role: Python Developer, Python Software Engineer, Software Engineer, Software Developer - Location: 100% work from home - Salary: £35k - £42k base salary + great benefits - You will design and maintain Python and Django applications, craft reliable REST APIs, optimise MySQL-backed systems and contribute to product features from concept to deployment. You will work closely with other developers, designers and product managers
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        FEATURED

        Python Developer

        Transforming Learning Group
        City of London, London
        £35000 - £42000 per annum
        Location -Remote (UK-based) Salary - £35,000 £42,000 - Transforming Learning Groupis a forward-thinking education technology group working with over 5,000 schools across the UK. Our mission is simple, to help schools harness technology and data to improve outcomes for every learner. Through our brands including turn IT on, School ICT Services, SalamanderSoft and more we deliver solutions that make schools more efficient, effective and innovative. Were looking for aPython Developerto join our growing engineering team. If youre passionate about creating intuitive, web-based applications and thrive in a collaborative environment, this could be the perfect role for you. What youll be doing * Designing, building and maintaining web applications using Python and Django. * Collaborating with developers, designers and product managers to deliver high-quality solutions.
        Location -Remote (UK-based) Salary - £35,000 £42,000 - Transforming Learning Groupis a forward-thinking education technology group working with over 5,000 schools across the UK. Our mission is simple, to help schools harness technology and data to improve outcomes for every learner. Through our brands including turn IT on, School ICT Services, SalamanderSoft and more we deliver solutions that make schools more efficient, effective and innovative. Were looking for aPython Developerto join our growing engineering team. If youre passionate about creating intuitive, web-based applications and thrive in a collaborative environment, this could be the perfect role for you. What youll be doing * Designing, building and maintaining web applications using Python and Django. * Collaborating with developers, designers and product managers to deliver high-quality solutions.
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        FEATURED
        Company Overview - At GSK, we have bold ambitions for patients, aiming to positively impact the health of 2.5 billion people by the end of the decade. Our R&D focuses on discovering and delivering vaccines and medicines, combining our understanding of the immune system with cutting-edge technology to transform peoples lives. GSK fosters a culture ambitious for patients, accountable for impact, and committed to doing the right thing, making sure that we focus our efforts on accelerating significant assets that meet patients needs and have the highest probability of success. GSK has kicked off 2025 with impressive growth in sales, profits, and earnings. We anticipate five major new FDA product approvals and 15 phase III/pivotal study readouts over the next two years. So far, we have secured two FDA approvals, with three more expected later this year.
        Company Overview - At GSK, we have bold ambitions for patients, aiming to positively impact the health of 2.5 billion people by the end of the decade. Our R&D focuses on discovering and delivering vaccines and medicines, combining our understanding of the immune system with cutting-edge technology to transform peoples lives. GSK fosters a culture ambitious for patients, accountable for impact, and committed to doing the right thing, making sure that we focus our efforts on accelerating significant assets that meet patients needs and have the highest probability of success. GSK has kicked off 2025 with impressive growth in sales, profits, and earnings. We anticipate five major new FDA product approvals and 15 phase III/pivotal study readouts over the next two years. So far, we have secured two FDA approvals, with three more expected later this year.
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        Salesforce Developer

        Halian Technology Limited
        Central London (W1)
        From £50,000 to £60,000 per annum Plus bonus and benefits
        Job Specification: Mid-Level Salesforce Developer (FinTech) Location:Hybrid - Employment Type:Full-time - Level:Mid-Level - About the Role - We are seeking a skilledMid-Level Salesforce Developerto join my clients growing fintech engineering team. You will be responsible for developing, enhancing, and maintaining our Salesforce platform to support high-performance financial products, compliant workflows, and exceptional customer experiences. Youll work closely with product, operations, and engineering teams to translate business requirements into scalable Salesforce solutions. Key Responsibilities * Design, build, and deploy custom solutions usingLightning Web Components (LWC),Apex,SOQL/SOSL, andSalesforce APIs. * Configure Salesforce objects, flows, validation rules, process automation, and integrations. * Maintain and improve existing codebase, ensuring performance,
        Job Specification: Mid-Level Salesforce Developer (FinTech) Location:Hybrid - Employment Type:Full-time - Level:Mid-Level - About the Role - We are seeking a skilledMid-Level Salesforce Developerto join my clients growing fintech engineering team. You will be responsible for developing, enhancing, and maintaining our Salesforce platform to support high-performance financial products, compliant workflows, and exceptional customer experiences. Youll work closely with product, operations, and engineering teams to translate business requirements into scalable Salesforce solutions. Key Responsibilities * Design, build, and deploy custom solutions usingLightning Web Components (LWC),Apex,SOQL/SOSL, andSalesforce APIs. * Configure Salesforce objects, flows, validation rules, process automation, and integrations. * Maintain and improve existing codebase, ensuring performance,
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        Senior Java Developer - AI Project

        Connexa
        Milton Keynes (MK1)
        £70000 - £80000 per annum + + 20% Bonus
        Our client, a growing consultancy delivering cutting-edge AI and data-led services to government and public sector clients, is looking for a Senior Software Engineer to join their forward-thinking team in Milton Keynes. This is a fantastic opportunity to contribute to a nationally recognised AI innovation platform used to drive sensitive data discovery, redaction, and secure archiving for government departments. You'll work across a modern tech stack and play a key role in the development, deployment, and support of a secure full stack system used across the UK public sector. * Design, build, and test full stack software in a secure, client-focused environment * Work with modern front-end technologies (React, TypeScript, HTML/CSS) to deliver intuitive UI/UX * Develop robust back-end services using Java and Spring Boot
        Our client, a growing consultancy delivering cutting-edge AI and data-led services to government and public sector clients, is looking for a Senior Software Engineer to join their forward-thinking team in Milton Keynes. This is a fantastic opportunity to contribute to a nationally recognised AI innovation platform used to drive sensitive data discovery, redaction, and secure archiving for government departments. You'll work across a modern tech stack and play a key role in the development, deployment, and support of a secure full stack system used across the UK public sector. * Design, build, and test full stack software in a secure, client-focused environment * Work with modern front-end technologies (React, TypeScript, HTML/CSS) to deliver intuitive UI/UX * Develop robust back-end services using Java and Spring Boot
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        CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index and the NASDAQ 100, CoStar Group is on a mission to digitize the worlds real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives. We have been living and breathing the world of real estate information and online marketplaces for over 35 years, giving us the perspective to create truly unique and valuable offerings to our customers. Weve continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry, for our customers, and even our competitors. We continue that effort today and are always working to improve and drive innovation.
        CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index and the NASDAQ 100, CoStar Group is on a mission to digitize the worlds real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives. We have been living and breathing the world of real estate information and online marketplaces for over 35 years, giving us the perspective to create truly unique and valuable offerings to our customers. Weve continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry, for our customers, and even our competitors. We continue that effort today and are always working to improve and drive innovation.
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        FEATURED

        Salesforce Developer

        Triad Group PLC
        Milton Keynes (MK1)
        £55000 - £65000 per annum
        Based at client locations, working remotely, or based in our Godalming or Milton Keynes offices. Salary: up to £65,000, plus company benefits. Due to the nature of this position, you must be willing and eligible to achieve a minimum of SC clearance. To be eligible, you must have been a resident in the UK for a minimum of 5 years and have the right to work in the UK. About Us - Triad Group Plc is an award-winning digital, data, and solutions consultancy with over 35 years' experience primarily serving the UK public sector and central government. We deliver high-quality solutions that make a real difference to users, citizens, and consumers. At Triad, collaboration thrives, knowledge is shared, and every voice matters. Our close-knit, supportive culture ensures you're valued from day one. Whether working with cutting-edge tech or shaping strategy for national-scale proj
        Based at client locations, working remotely, or based in our Godalming or Milton Keynes offices. Salary: up to £65,000, plus company benefits. Due to the nature of this position, you must be willing and eligible to achieve a minimum of SC clearance. To be eligible, you must have been a resident in the UK for a minimum of 5 years and have the right to work in the UK. About Us - Triad Group Plc is an award-winning digital, data, and solutions consultancy with over 35 years' experience primarily serving the UK public sector and central government. We deliver high-quality solutions that make a real difference to users, citizens, and consumers. At Triad, collaboration thrives, knowledge is shared, and every voice matters. Our close-knit, supportive culture ensures you're valued from day one. Whether working with cutting-edge tech or shaping strategy for national-scale proj
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        Software Engineer - AI Innovation

        Connexa
        Milton Keynes (MK1)
        £50000 - £70000 per annum + 20% Bonus
        Our client, a growing consultancy delivering cutting-edge AI and data-led services to government and public sector clients, is looking for a Full Stack Software Engineer to join their forward-thinking team in Milton Keynes. This is a fantastic opportunity to contribute to a nationally recognised AI innovation platform used to drive sensitive data discovery, redaction, and secure archiving for government departments. You'll work across a modern tech stack and play a key role in the development, deployment, and support of a secure full stack system used across the UK public sector. * Design, build, and test full stack software in a secure, client-focused environment * Work with modern front-end technologies (React, TypeScript, HTML/CSS) to deliver intuitive UI/UX * Develop robust back-end services using Java and Spring Boot
        Our client, a growing consultancy delivering cutting-edge AI and data-led services to government and public sector clients, is looking for a Full Stack Software Engineer to join their forward-thinking team in Milton Keynes. This is a fantastic opportunity to contribute to a nationally recognised AI innovation platform used to drive sensitive data discovery, redaction, and secure archiving for government departments. You'll work across a modern tech stack and play a key role in the development, deployment, and support of a secure full stack system used across the UK public sector. * Design, build, and test full stack software in a secure, client-focused environment * Work with modern front-end technologies (React, TypeScript, HTML/CSS) to deliver intuitive UI/UX * Develop robust back-end services using Java and Spring Boot
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        Linux Administrator

        Randstad Digital
        City of London (EC1)
        £50000 - £55000 per annum
        Location: London (Hybrid - 2 days in office) Permanent - Availability: Immediate Joiner - About the Role - We're seeking a highly skilled Linux Administrator with strong Red Hat Enterprise Linux (RHEL) experience to join our infrastructure engineering team. The ideal candidate will bring hands-on expertise in system administration, automation, and virtualization, while maintaining a proactive engineering mindset focused on continuous improvement and efficiency. Key Responsibilities * Install, configure, and manage Red Hat Satellite servers. * Perform server implementation, upgrades, maintenance, and monitoring across environments. * Develop and maintain automation solutions using Ansible and Ansible Automation Platform (AAP). * Manage and upgrade VMware environments. * Troubleshoot and resolve system, platform, and network issues with minimal supervision.
        Location: London (Hybrid - 2 days in office) Permanent - Availability: Immediate Joiner - About the Role - We're seeking a highly skilled Linux Administrator with strong Red Hat Enterprise Linux (RHEL) experience to join our infrastructure engineering team. The ideal candidate will bring hands-on expertise in system administration, automation, and virtualization, while maintaining a proactive engineering mindset focused on continuous improvement and efficiency. Key Responsibilities * Install, configure, and manage Red Hat Satellite servers. * Perform server implementation, upgrades, maintenance, and monitoring across environments. * Develop and maintain automation solutions using Ansible and Ansible Automation Platform (AAP). * Manage and upgrade VMware environments. * Troubleshoot and resolve system, platform, and network issues with minimal supervision.
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        FEATURED

        Senior Backend Engineer

        Plexus Resource Solutions Ltd
        City of London (EC1)
        From £110,000 to £150,000 per annum
        Web3 / Social Product / Blockchain Infrastructure - Remote - 110k-150k - Plexus is partnering with a leading Web3 innovator building the next-generation social platform powered by blockchain. Theyre seeking a Senior Backend Engineer to architect scalable systems and help bring seamless, on-chain social experiences to life. The candidate will lead backend architecture and development for the companys social platform. Responsibilities - Design, develop, and maintain scalable backend systems and APIs. Collaborate with frontend engineers to deliver seamless user experiences. Integrate web3 technologies via third-party APIs or in-house solutions. Continuously improve infrastructure, monitoring, and engineering processes. Requirements - 4+ years of production software engineering experience, ideally at scale. Strong proficiency with TypeScript, Node.js, and AWS.
        Web3 / Social Product / Blockchain Infrastructure - Remote - 110k-150k - Plexus is partnering with a leading Web3 innovator building the next-generation social platform powered by blockchain. Theyre seeking a Senior Backend Engineer to architect scalable systems and help bring seamless, on-chain social experiences to life. The candidate will lead backend architecture and development for the companys social platform. Responsibilities - Design, develop, and maintain scalable backend systems and APIs. Collaborate with frontend engineers to deliver seamless user experiences. Integrate web3 technologies via third-party APIs or in-house solutions. Continuously improve infrastructure, monitoring, and engineering processes. Requirements - 4+ years of production software engineering experience, ideally at scale. Strong proficiency with TypeScript, Node.js, and AWS.
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        C# Developer

        VIQU IT Recruitment
        The City, City of London (EC4), EC4M 7JH
        £300 - 400 per day
        A client is seeking an experienced C# Developer to join their development team and support a key internal initiative. In this role, you'll also play a major part in configuring, enhancing, and integrating Microsoft Dynamics 365 within the business. As a Software Developer, you’ll collaborate closely with senior stakeholders to deliver clean, efficient, and reliable code that underpins critical business applications. * Produce well-structured and clearly documented C# / .NET code. * Configure, customise, and maintain Microsoft Dynamics 365. * Build and support integrations across Dynamics 365 and other systems. * Develop plugins, workflows, and bespoke components within the Dynamics ecosystem. * Work seamlessly with cross-functional teams in a fully remote setting. * Take part in code reviews and contribute to help define best practices.
        A client is seeking an experienced C# Developer to join their development team and support a key internal initiative. In this role, you'll also play a major part in configuring, enhancing, and integrating Microsoft Dynamics 365 within the business. As a Software Developer, you’ll collaborate closely with senior stakeholders to deliver clean, efficient, and reliable code that underpins critical business applications. * Produce well-structured and clearly documented C# / .NET code. * Configure, customise, and maintain Microsoft Dynamics 365. * Build and support integrations across Dynamics 365 and other systems. * Develop plugins, workflows, and bespoke components within the Dynamics ecosystem. * Work seamlessly with cross-functional teams in a fully remote setting. * Take part in code reviews and contribute to help define best practices.
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        NEW
        We're seeking an experienced Senior Full Stack Developer to join our clients expanding technology team. In this role, you'll be instrumental in designing, developing, and maintaining high-quality, scalable web applications. You'll work across the full stack, collaborating closely with colleagues to deliver impactful, user-focused solutions. Key Responsibilities * Develop and maintain modern web applications using C# .NET (Core/Framework) and React. * Work with cross-functional teams to define requirements and deliver new features. * Write clean, scalable, and well-tested code. * Diagnose and resolve application issues to ensure optimal performance. You will have - * 3+ years' experience as a Full Stack Developer. * Strong hands-on expertise with C# .NET (Core) and React. * Good understanding of REST APIs, SQL/NoSQL databases, and Git version control.
        We're seeking an experienced Senior Full Stack Developer to join our clients expanding technology team. In this role, you'll be instrumental in designing, developing, and maintaining high-quality, scalable web applications. You'll work across the full stack, collaborating closely with colleagues to deliver impactful, user-focused solutions. Key Responsibilities * Develop and maintain modern web applications using C# .NET (Core/Framework) and React. * Work with cross-functional teams to define requirements and deliver new features. * Write clean, scalable, and well-tested code. * Diagnose and resolve application issues to ensure optimal performance. You will have - * 3+ years' experience as a Full Stack Developer. * Strong hands-on expertise with C# .NET (Core) and React. * Good understanding of REST APIs, SQL/NoSQL databases, and Git version control.
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        We're seeking an experienced Senior Full Stack Developer to join our clients expanding technology team. In this role, you'll be instrumental in designing, developing, and maintaining high-quality, scalable web applications. You'll work across the full stack, collaborating closely with colleagues to deliver impactful, user-focused solutions. Key Responsibilities * Develop and maintain modern web applications using C# .NET (Core/Framework) and React. * Work with cross-functional teams to define requirements and deliver new features. * Write clean, scalable, and well-tested code. * Diagnose and resolve application issues to ensure optimal performance. You will have - * 3+ years' experience as a Full Stack Developer. * Strong hands-on expertise with C# .NET (Core) and React. * Good understanding of REST APIs, SQL/NoSQL databases, and Git version control.
        We're seeking an experienced Senior Full Stack Developer to join our clients expanding technology team. In this role, you'll be instrumental in designing, developing, and maintaining high-quality, scalable web applications. You'll work across the full stack, collaborating closely with colleagues to deliver impactful, user-focused solutions. Key Responsibilities * Develop and maintain modern web applications using C# .NET (Core/Framework) and React. * Work with cross-functional teams to define requirements and deliver new features. * Write clean, scalable, and well-tested code. * Diagnose and resolve application issues to ensure optimal performance. You will have - * 3+ years' experience as a Full Stack Developer. * Strong hands-on expertise with C# .NET (Core) and React. * Good understanding of REST APIs, SQL/NoSQL databases, and Git version control.
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        Senior Automation QA - Remote

        Exposed Solutions
        Central London (W1)
        From £40,000 to £45,000 per annum
        SeniorAutomationQAAIStartup(UK)|BuildQAfromScratch - OurclientisanambitiousAIstartupbuildingcutting-edgeproducts,andwerelookingforaSeniorAutomationQAwhocanowntestautomationfromdayone. IfyoulovegreenfieldchallengesandwanttoshapetheentireQAfunctioninafast-growingtechcompany,thisisforyou. Whatyoulldo * BuildourautomationframeworksandQAprocessesfromscratch * Leadteststrategyacrossbackend,frontend&APIs * CreateautomatedtestsuitesintegratedintoCI/CD * CollaboratewithEngineering&MLteamstoensurehigh-qualityreleases * Championqualityacrosstheorganisation - Whatwerelookingfor * 5+yearsQAexperiencewithastrongautomationfocus * Provenexperiencesettinguptestautomationinastartuporgreenfieldenvironment * StrongskillswithPython/JavaScripttestframeworks * ExperiencewithPlaywright,Cypressorsimilar * Cloud&CI/CDexposure(AWS/GCP/Azure,GitHubActions,GitLabCI) * Bonus:experiencetestingAI/ML
        SeniorAutomationQAAIStartup(UK)|BuildQAfromScratch - OurclientisanambitiousAIstartupbuildingcutting-edgeproducts,andwerelookingforaSeniorAutomationQAwhocanowntestautomationfromdayone. IfyoulovegreenfieldchallengesandwanttoshapetheentireQAfunctioninafast-growingtechcompany,thisisforyou. Whatyoulldo * BuildourautomationframeworksandQAprocessesfromscratch * Leadteststrategyacrossbackend,frontend&APIs * CreateautomatedtestsuitesintegratedintoCI/CD * CollaboratewithEngineering&MLteamstoensurehigh-qualityreleases * Championqualityacrosstheorganisation - Whatwerelookingfor * 5+yearsQAexperiencewithastrongautomationfocus * Provenexperiencesettinguptestautomationinastartuporgreenfieldenvironment * StrongskillswithPython/JavaScripttestframeworks * ExperiencewithPlaywright,Cypressorsimilar * Cloud&CI/CDexposure(AWS/GCP/Azure,GitHubActions,GitLabCI) * Bonus:experiencetestingAI/ML
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        Data Technical Lead

        Deerfoot Recruitment Solutions
        Moorgate, City of London (EC2), EC2Y
        Benefits Package
        Data Engineering Technical Lead - Global Investment Bank - London - Hybrid - Permanent - Excellent Package + Benefits - We are working with one of the world's leading banking groups, who we have partnered with for 15 years. We are seeking an experienced Data Architect / EDM Developer / Data Engineering Lead to join their International Technology team in London. You will be a key part of the Architecture, Middleware, Data & Enterprise Services (AMD) division, driving data engineering, integration and automation initiatives across our clients EMEA banking and securities entities. This is a hands-on leadership role, combining technical expertise with mentoring and team leadership. Key Responsibilities * Architect, design and deliver enterprise-wide EDM and data solutions. * Lead and mentor EDM developers, ensuring high-quality, cost-effective delivery.
        Data Engineering Technical Lead - Global Investment Bank - London - Hybrid - Permanent - Excellent Package + Benefits - We are working with one of the world's leading banking groups, who we have partnered with for 15 years. We are seeking an experienced Data Architect / EDM Developer / Data Engineering Lead to join their International Technology team in London. You will be a key part of the Architecture, Middleware, Data & Enterprise Services (AMD) division, driving data engineering, integration and automation initiatives across our clients EMEA banking and securities entities. This is a hands-on leadership role, combining technical expertise with mentoring and team leadership. Key Responsibilities * Architect, design and deliver enterprise-wide EDM and data solutions. * Lead and mentor EDM developers, ensuring high-quality, cost-effective delivery.
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        FEATURED

        Senior Full Stack PHP Developer (Remote)

        Digital Appointments
        Bloomsbury, Central London (WC1), WC1N 3AX
        From £50,000 to £60,000 per annum
        A fantastic, fully remote opportunity! Are you an experienced Full Stack PHP Developer with React? This well-established SaaS platform used by businesses across the UK prides itself on providing a stable, reliable, and feature-rich service to its large portfolio of clients. They foster a collaborative, supportive, and fully remote working environment where talented developers can really thrive. We are seeking a talented and experienced Full Stack PHP Developer to join their dedicated development team. You will play a crucial role in the ongoing development, maintenance, and enhancement of their core SaaS platform. Working across the full stack, you'll be involved in building new features, optimising existing code, and ensuring the scalability and reliability of their application. This is an excellent opportunity to contribute significantly to a great product within a
        A fantastic, fully remote opportunity! Are you an experienced Full Stack PHP Developer with React? This well-established SaaS platform used by businesses across the UK prides itself on providing a stable, reliable, and feature-rich service to its large portfolio of clients. They foster a collaborative, supportive, and fully remote working environment where talented developers can really thrive. We are seeking a talented and experienced Full Stack PHP Developer to join their dedicated development team. You will play a crucial role in the ongoing development, maintenance, and enhancement of their core SaaS platform. Working across the full stack, you'll be involved in building new features, optimising existing code, and ensuring the scalability and reliability of their application. This is an excellent opportunity to contribute significantly to a great product within a
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        Principal Software Engineer

        Fruition Group
        City of London (EC1), EC1
        £95000 - £120000 per annum
        Location: Remote first (Occasional travel to London) Salary: £95,000 - £120,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven systems that empower venues to deliver seamless guest experiences and drive long-term innovation. What will I be doing? * Lead the technical vision and architectural direction across complex backend systems, ensuring scalability, reliability, and performance. * Partner closely with engineering leadership to define best practices, coding standards, and long-term technical strategy. * Design, develop, and oversee the delivery of robust, production-grade software
        Location: Remote first (Occasional travel to London) Salary: £95,000 - £120,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven systems that empower venues to deliver seamless guest experiences and drive long-term innovation. What will I be doing? * Lead the technical vision and architectural direction across complex backend systems, ensuring scalability, reliability, and performance. * Partner closely with engineering leadership to define best practices, coding standards, and long-term technical strategy. * Design, develop, and oversee the delivery of robust, production-grade software
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        Senior Software Engineer

        Fruition Group
        City of London (EC1), EC1
        £75000 - £95000 per annum
        Location: London 1x a month - Salary: £75,000 - £95,000 - An established, global technology business within the hospitality-tech industry is seeking a talented Backend Software Engineer to help build and scale cutting-edge digital solutions. This is a chance to work on greenfield projects - building new, scalable products that help venues create seamless, data-driven guest experiences from the ground up. What will I be doing? * Design, develop, test, and maintain high-performance backend systems supporting real-time hospitality operations. * Take ownership of key features throughout the software development lifecycle - from technical design through to deployment and ongoing optimisation. * Collaborate with cross-functional teams including product, design, and data science to deliver innovative, customer-focused solutions.
        Location: London 1x a month - Salary: £75,000 - £95,000 - An established, global technology business within the hospitality-tech industry is seeking a talented Backend Software Engineer to help build and scale cutting-edge digital solutions. This is a chance to work on greenfield projects - building new, scalable products that help venues create seamless, data-driven guest experiences from the ground up. What will I be doing? * Design, develop, test, and maintain high-performance backend systems supporting real-time hospitality operations. * Take ownership of key features throughout the software development lifecycle - from technical design through to deployment and ongoing optimisation. * Collaborate with cross-functional teams including product, design, and data science to deliver innovative, customer-focused solutions.
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        Principal Software Engineer

        Fruition Group
        City of London (EC1), EC1
        £95000 - £120000 per annum
        Location: London - 1x a month - Salary: £95,000 - £120,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven systems that empower venues to deliver seamless guest experiences and drive long-term innovation. What will I be doing? * Lead the technical vision and architectural direction across complex backend systems, ensuring scalability, reliability, and performance. * Partner closely with engineering leadership to define best practices, coding standards, and long-term technical strategy. * Design, develop, and oversee the delivery of robust, production-grade software built using Python, D
        Location: London - 1x a month - Salary: £95,000 - £120,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven systems that empower venues to deliver seamless guest experiences and drive long-term innovation. What will I be doing? * Lead the technical vision and architectural direction across complex backend systems, ensuring scalability, reliability, and performance. * Partner closely with engineering leadership to define best practices, coding standards, and long-term technical strategy. * Design, develop, and oversee the delivery of robust, production-grade software built using Python, D
        more
        SQL Power BI - Python - A well established and growing business based in Central London (near Waterloo) are looking for a capable, confident Data Analyst with expertise in SQL and Power BI to join them on a 6 month FTC. As the organisations sole Data Analyst, you will play a pivotal role in delivering the operational elements of the Data Strategy. Working closely with the Director of Technology and Data, you will help drive the transformation of how they use data, enhancing insight, decision-making and impact across the organisation. The primary goal is to ensure that they have the technical capabilities and structures in place, to use data from across the business to maximise efficiency. You will lead the establishment and maturity of foundational components, including data governance, quality and process validation.
        SQL Power BI - Python - A well established and growing business based in Central London (near Waterloo) are looking for a capable, confident Data Analyst with expertise in SQL and Power BI to join them on a 6 month FTC. As the organisations sole Data Analyst, you will play a pivotal role in delivering the operational elements of the Data Strategy. Working closely with the Director of Technology and Data, you will help drive the transformation of how they use data, enhancing insight, decision-making and impact across the organisation. The primary goal is to ensure that they have the technical capabilities and structures in place, to use data from across the business to maximise efficiency. You will lead the establishment and maturity of foundational components, including data governance, quality and process validation.
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        FEATURED
        We're looking for a highly skilled Senior Full Stack Developer with strong experience in C# .NET and React to join our growing tech team. You'll play a key role in designing, building, and maintaining robust, scalable web applications, working across the full stack to deliver high-quality solutions that drive real value. This is a hybrid role with two days a week based in the office. * Design, develop, and maintain web applications using C# .NET (Core/Framework) and React. * Collaborate with cross-functional teams to define, design, and ship new features. * Write clean, scalable, and testable code. * Troubleshoot and debug applications. * Mentor junior developers and contribute to best practices. * 5+ years of experience as a Full Stack Developer. * Strong proficiency in C# .NET (Core) and React. * Solid understanding of REST APIs, SQL/NoSQL databases, and version con
        We're looking for a highly skilled Senior Full Stack Developer with strong experience in C# .NET and React to join our growing tech team. You'll play a key role in designing, building, and maintaining robust, scalable web applications, working across the full stack to deliver high-quality solutions that drive real value. This is a hybrid role with two days a week based in the office. * Design, develop, and maintain web applications using C# .NET (Core/Framework) and React. * Collaborate with cross-functional teams to define, design, and ship new features. * Write clean, scalable, and testable code. * Troubleshoot and debug applications. * Mentor junior developers and contribute to best practices. * 5+ years of experience as a Full Stack Developer. * Strong proficiency in C# .NET (Core) and React. * Solid understanding of REST APIs, SQL/NoSQL databases, and version con
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        Data Analyst (Fabric)

        Oscar Associates (UK) Limited
        City of London (EC1)
        £60000 - £75000 per annum + benefits
        Job Title: BI Analyst (Fabric) Location: City of London (Hybrid 2 days a week) Salary: £60,000 - £70,000 DOE - Purpose - Reporting to the Head of Data Insight & Analytics, this role will support with the development and progression of business intelligence and insight capability. Sitting within the Data & Analytics team, this role will directly support the Private Wealth brands through building dashboards, insight tools and supporting key stakeholders, including the Private Wealth business heads, with data-driven decision making. The role would suit an experienced and driven individual who is looking for an opportunity to advance their understanding of data, working closely with business leaders to generate meaningful insight. Responsibilities * Act as the subject matter expert (SME) for data analytics and visualisation to their Private Wealth brands (Partners Wealth
        Job Title: BI Analyst (Fabric) Location: City of London (Hybrid 2 days a week) Salary: £60,000 - £70,000 DOE - Purpose - Reporting to the Head of Data Insight & Analytics, this role will support with the development and progression of business intelligence and insight capability. Sitting within the Data & Analytics team, this role will directly support the Private Wealth brands through building dashboards, insight tools and supporting key stakeholders, including the Private Wealth business heads, with data-driven decision making. The role would suit an experienced and driven individual who is looking for an opportunity to advance their understanding of data, working closely with business leaders to generate meaningful insight. Responsibilities * Act as the subject matter expert (SME) for data analytics and visualisation to their Private Wealth brands (Partners Wealth
        more
        SQL Power BI - Python - A well established and growing business based in Central London (near Waterloo) are looking for a capable, confident Data Analyst with expertise in SQL and Power BI to join them on a 6 month FTC. As the organisations sole Data Analyst, you will play a pivotal role in delivering the operational elements of the Data Strategy. Working closely with the Director of Technology and Data, you will help drive the transformation of how they use data, enhancing insight, decision-making and impact across the organisation. The primary goal is to ensure that they have the technical capabilities and structures in place, to use data from across the business to maximise efficiency. You will lead the establishment and maturity of foundational components, including data governance, quality and process validation.
        SQL Power BI - Python - A well established and growing business based in Central London (near Waterloo) are looking for a capable, confident Data Analyst with expertise in SQL and Power BI to join them on a 6 month FTC. As the organisations sole Data Analyst, you will play a pivotal role in delivering the operational elements of the Data Strategy. Working closely with the Director of Technology and Data, you will help drive the transformation of how they use data, enhancing insight, decision-making and impact across the organisation. The primary goal is to ensure that they have the technical capabilities and structures in place, to use data from across the business to maximise efficiency. You will lead the establishment and maturity of foundational components, including data governance, quality and process validation.
        more
        FEATURED

        Principal Software Engineer

        Fruition Group
        City of London (EC1), EC1
        £95000 - £120000 per annum
        Location: Remote first (Occasional travel to London) Salary: £95,000 - £120,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven systems that empower venues to deliver seamless guest experiences and drive long-term innovation. What will I be doing? * Lead the technical vision and architectural direction across complex backend systems, ensuring scalability, reliability, and performance. * Partner closely with engineering leadership to define best practices, coding standards, and long-term technical strategy. * Design, develop, and oversee the delivery of robust, production-grade software
        Location: Remote first (Occasional travel to London) Salary: £95,000 - £120,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects from the ground up - architecting scalable, data-driven systems that empower venues to deliver seamless guest experiences and drive long-term innovation. What will I be doing? * Lead the technical vision and architectural direction across complex backend systems, ensuring scalability, reliability, and performance. * Partner closely with engineering leadership to define best practices, coding standards, and long-term technical strategy. * Design, develop, and oversee the delivery of robust, production-grade software
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        What is the average salary for API in Hertfordshire?

        Average salary per year
        £62,499

        The average salary for a API in Hertfordshire is £62,499. API in Hertfordshire salaries range from £47,499 to £67,499.

        Frequently Asked Questions

        How many permanent API jobs are there in Hertfordshire?
        There are 135 permanent API jobs within 20 miles of Hertfordshire available on CWJobs right now.

        What other similar jobs are there to permanent API jobs in Hertfordshire?
        As well as permanent API jobs in Hertfordshire, you can find permanent Qa Automation, Quality Assurance, QA Analyst, amongst many others.