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        37 Permanent API jobs in Welwyn Garden City + 20 miles

        298 exact matches jobs are outside your preferred location

        Software Engineer

        Cegeka UK Limited
        Reading, Berkshire
        +10% Bonus
        We are looking for a motivated and detail-oriented Software Engineer to join our development team. You will have hands-on experience with Java development, Spring framework, relational databases, and a strong desire to grow their technical skills while contributing to Cegeka software solutions. * Design, develop, test, and maintain Java-based applications using the Spring framework. Write efficient, reliable, and maintainable code that adheres to best practices. * Work with SQL databases (e.g., MySQL, PostgreSQL, Oracle) to design schemas, write queries, and optimise performance. * Collaborate with senior engineers to implement new features and fix bugs. * Participate in code reviews and contribute to improving coding standards. * Assist in troubleshooting, debugging, and performance tuning of applications. * Document technical designs, processes, and solutions.
        We are looking for a motivated and detail-oriented Software Engineer to join our development team. You will have hands-on experience with Java development, Spring framework, relational databases, and a strong desire to grow their technical skills while contributing to Cegeka software solutions. * Design, develop, test, and maintain Java-based applications using the Spring framework. Write efficient, reliable, and maintainable code that adheres to best practices. * Work with SQL databases (e.g., MySQL, PostgreSQL, Oracle) to design schemas, write queries, and optimise performance. * Collaborate with senior engineers to implement new features and fix bugs. * Participate in code reviews and contribute to improving coding standards. * Assist in troubleshooting, debugging, and performance tuning of applications. * Document technical designs, processes, and solutions.
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        NEW

        Senior Full Stack Engineer

        XACT PLACEMENTS LIMITED
        London
        From £70,000 to £80,000 per annum
        Want to use your full stack skills to help stop real-world cyber attacks? This is your chance to join a fast-growing, VC-backed cybersecurity innovator, recognised by Gartner and trusted by Fortune 500s and critical infrastructure providers worldwide. Theyre building cutting-edge technology that helps organisations continuously understand how they could be compromised and theyre scaling fast. Now, theyre looking for a Senior Full Stack Engineer to join their Client Facing Applications (CFA) team, where youll help shape the customer experience for some of the worlds largest enterprises. * Designing and developing enterprise-grade SaaS features across backend and frontend systems * Building secure, scalable, and high-performing APIs and services (NestJS, GraphQL, REST) * Creating data-driven dashboards and UIs with React, Next.js, and Chakra UI
        Want to use your full stack skills to help stop real-world cyber attacks? This is your chance to join a fast-growing, VC-backed cybersecurity innovator, recognised by Gartner and trusted by Fortune 500s and critical infrastructure providers worldwide. Theyre building cutting-edge technology that helps organisations continuously understand how they could be compromised and theyre scaling fast. Now, theyre looking for a Senior Full Stack Engineer to join their Client Facing Applications (CFA) team, where youll help shape the customer experience for some of the worlds largest enterprises. * Designing and developing enterprise-grade SaaS features across backend and frontend systems * Building secure, scalable, and high-performing APIs and services (NestJS, GraphQL, REST) * Creating data-driven dashboards and UIs with React, Next.js, and Chakra UI
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        NEW
        Senior Backend Engineer | High-Growth Cybersecurity Scale-Up | Fully Remote (Global) Are you ready to build the core systems that power one of the fastest-growing cybersecurity platforms on the planet? This is your chance to join a research-driven, venture-backed security scale-up thats trusted by some of the worlds biggest enterprises and critical infrastructure providers. Recognised by Gartner, armed with $29M+ in funding, and scaling aggressively worldwide, theyre on a mission to reshape how organisations stay ahead of real-world cyber threats. As a Senior Backend Engineer, youll play a key role in building scalable, high-performance backend systems that ingest, process, and serve data on millions of assetshelping global security teams uncover exposures before attackers do. * Designing and building backend services and data pipelines powering a cutting-edge ...
        Senior Backend Engineer | High-Growth Cybersecurity Scale-Up | Fully Remote (Global) Are you ready to build the core systems that power one of the fastest-growing cybersecurity platforms on the planet? This is your chance to join a research-driven, venture-backed security scale-up thats trusted by some of the worlds biggest enterprises and critical infrastructure providers. Recognised by Gartner, armed with $29M+ in funding, and scaling aggressively worldwide, theyre on a mission to reshape how organisations stay ahead of real-world cyber threats. As a Senior Backend Engineer, youll play a key role in building scalable, high-performance backend systems that ingest, process, and serve data on millions of assetshelping global security teams uncover exposures before attackers do. * Designing and building backend services and data pipelines powering a cutting-edge ...
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        NEW
        Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: 480per day (Outside IR35) Exciting Projects:Work on innovative digital solutions in a start-up environment. Flexible Working:Enjoy a hybrid role with one day a week in London. Collaborative Culture:Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Design Agencylooking forexperiencedPython Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up specialising in events services and design, applyingthe power of their collective imagination to creative, commercial, and cultural challenges for massive enterprises such as Amazon and Google
        Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: 480per day (Outside IR35) Exciting Projects:Work on innovative digital solutions in a start-up environment. Flexible Working:Enjoy a hybrid role with one day a week in London. Collaborative Culture:Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Design Agencylooking forexperiencedPython Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up specialising in events services and design, applyingthe power of their collective imagination to creative, commercial, and cultural challenges for massive enterprises such as Amazon and Google
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        NEW
        Espire Infolabs is hiring for Front End Developer(React.js) for London, UK location. Role :Front End Developer(React.js) Location: London, UK(3 Days/Week onsite) Desired Industry Experience:5+ years - Relevant Experience:React. Js, Typescript, Azure - Proven experience as a Front-End Developer with a focus on React.js, and Typescript. Familiarity with C# and .Net. Strong proficiency in JavaScript, ES6/ES7, and related front-end technologies. Familiarity with state management libraries such as Redux. Experience with version control systems, such as Git. Experience with the Web Content Accessibility Guidelines. Knowledge of responsive web design principles and CSS frameworks. Understanding of RESTful APIs and asynchronous data retrieval. Experience with unit testing. Strong problem-solving and debugging skills. Excellent teamwork and communication skills.
        Espire Infolabs is hiring for Front End Developer(React.js) for London, UK location. Role :Front End Developer(React.js) Location: London, UK(3 Days/Week onsite) Desired Industry Experience:5+ years - Relevant Experience:React. Js, Typescript, Azure - Proven experience as a Front-End Developer with a focus on React.js, and Typescript. Familiarity with C# and .Net. Strong proficiency in JavaScript, ES6/ES7, and related front-end technologies. Familiarity with state management libraries such as Redux. Experience with version control systems, such as Git. Experience with the Web Content Accessibility Guidelines. Knowledge of responsive web design principles and CSS frameworks. Understanding of RESTful APIs and asynchronous data retrieval. Experience with unit testing. Strong problem-solving and debugging skills. Excellent teamwork and communication skills.
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        NEWFEATURED

        Senior Backend Software Engineer (Python)

        Plexus Resource Solutions Ltd
        EC1A, City of London
        From £90,000 to £120,000 per annum
        Web3 - London, England £90-£120K - Plexus are working with a company that are building the future of gaming by introducing equitable ownership and compensation models powered by blockchain. Through our suite of Web3 games and DAO-driven products, we create opportunities for players worldwide to share in the value they help create. As a Senior Backend Engineer, youll play a key role in shaping the infrastructure behind Web3 products. From crafting Python-based APIs to building seamless blockchain integrations, youll help power a platform that brings decentralized ownership to the next generation of gaming - Responsibilities * Architect and develop backend systems to power Web3 applications * Build and deploy RESTful APIs using Python * Connect backend services with Web3 protocols, blockchains, DAOs, and smart contracts - What we're looking for
        Web3 - London, England £90-£120K - Plexus are working with a company that are building the future of gaming by introducing equitable ownership and compensation models powered by blockchain. Through our suite of Web3 games and DAO-driven products, we create opportunities for players worldwide to share in the value they help create. As a Senior Backend Engineer, youll play a key role in shaping the infrastructure behind Web3 products. From crafting Python-based APIs to building seamless blockchain integrations, youll help power a platform that brings decentralized ownership to the next generation of gaming - Responsibilities * Architect and develop backend systems to power Web3 applications * Build and deploy RESTful APIs using Python * Connect backend services with Web3 protocols, blockchains, DAOs, and smart contracts - What we're looking for
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        NEW

        Digital Workflow & Automation Consultant

        Apogee Corporation**
        RG1, Reading, RG1 1LX
        Competitive Salary + Car + Remote Working
        With over 30 years of expertise, Apogee transforms how organisations of every size and sector manage their IT delivering everything they need through one seamless point of contact. As an independent subsidiary of HP Inc., we combine the agility of a specialist provider with the power of one of the worlds leading technology companies, giving our clients instant access to cutting-edge innovation backed by market-leading service operations! This is more than a technical role it is an opportunity to shape how organisations work! You will be at the forefront of designing and implementing intelligent workflows that free people from repetitive tasks and unlock their productivity. Working closely with colleagues, customers, and partners, you will transform processes and integrate cutting-edge technologies into real-world solutions. What You Will Do
        With over 30 years of expertise, Apogee transforms how organisations of every size and sector manage their IT delivering everything they need through one seamless point of contact. As an independent subsidiary of HP Inc., we combine the agility of a specialist provider with the power of one of the worlds leading technology companies, giving our clients instant access to cutting-edge innovation backed by market-leading service operations! This is more than a technical role it is an opportunity to shape how organisations work! You will be at the forefront of designing and implementing intelligent workflows that free people from repetitive tasks and unlock their productivity. Working closely with colleagues, customers, and partners, you will transform processes and integrate cutting-edge technologies into real-world solutions. What You Will Do
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        NEW
        Full Stack Software Developer ASP.NET C# jQuery HTML5 SQL - The ideal candidatewill be responsible for building and maintaining internal and external facing web applications. You will be working in a team of experienced developers to build highly performing systems that improve efficiency. Teams use Agile Methodology and follow Scrum and Kanban Frameworks. *ASP.NET C# jQuery HTML5 SQL Azure GIT - Job requirements - Role Responsibilities * Maintain existing products and provide resolutions to Escalated Support Calls within the agreed SLAs * Require testing developments from end to end before passed to Acceptance Testing * Ability to adapt quickly to an existing, complex environment * Evaluate, redesign and modify existing program logic to quickly and efficiently meet and exceed customer needs, by integrating new requirements and by applying proven development paths
        Full Stack Software Developer ASP.NET C# jQuery HTML5 SQL - The ideal candidatewill be responsible for building and maintaining internal and external facing web applications. You will be working in a team of experienced developers to build highly performing systems that improve efficiency. Teams use Agile Methodology and follow Scrum and Kanban Frameworks. *ASP.NET C# jQuery HTML5 SQL Azure GIT - Job requirements - Role Responsibilities * Maintain existing products and provide resolutions to Escalated Support Calls within the agreed SLAs * Require testing developments from end to end before passed to Acceptance Testing * Ability to adapt quickly to an existing, complex environment * Evaluate, redesign and modify existing program logic to quickly and efficiently meet and exceed customer needs, by integrating new requirements and by applying proven development paths
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        NEWFEATURED

        Business Analyst

        Anson Mccade
        NN4, Northampton, NN4 7SG
        45,000 to 60,000 Annual
        £45,000 to 60,000 GBP - Bonus - Hybrid WORKING - Location: Northampton, East Midlands - United Kingdom Type: Permanent - Location: Northampton (Hybrid - 2 days per week on-site) Salary: £50,000 - £60,000 + benefits - Sponsorship: Not available - About the Role - We are seeking an experienced Business Analyst (AVP level) to join a growing technology-focused change function within a forward-thinking organisation. This position is ideal for someone who enjoys analysing complex problems, engaging with stakeholders, and driving impactful technology solutions. You will play a key role in gathering requirements, shaping solutions, and supporting the delivery of business-critical initiatives. Key Responsibilities * Lead business analysis for small projects or workstreams within larger transformation programmes. * Gather and document clear, actionable business and functional r
        £45,000 to 60,000 GBP - Bonus - Hybrid WORKING - Location: Northampton, East Midlands - United Kingdom Type: Permanent - Location: Northampton (Hybrid - 2 days per week on-site) Salary: £50,000 - £60,000 + benefits - Sponsorship: Not available - About the Role - We are seeking an experienced Business Analyst (AVP level) to join a growing technology-focused change function within a forward-thinking organisation. This position is ideal for someone who enjoys analysing complex problems, engaging with stakeholders, and driving impactful technology solutions. You will play a key role in gathering requirements, shaping solutions, and supporting the delivery of business-critical initiatives. Key Responsibilities * Lead business analysis for small projects or workstreams within larger transformation programmes. * Gather and document clear, actionable business and functional r
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        PREMIUM

        Salesforce QA Engineer

        Yolk Recruitment
        SM4, Morden
        £50000.00 - £60000.00 per annum + + excellent benefits
        Yolk Recruitment are working with a leading global organisation that continues to grow and invest in its Salesforce capability. Known for its collaborative culture and commitment to continuous improvement, this is an excellent opportunity for a Salesforce QA Tester to make a real impact within a forward-thinking technology team. We're looking for someone who's passionate about quality and experienced in ensuring Salesforce solutions meet the highest standards of reliability and performance. You'll work closely with cross-functional teams to test, validate, and optimise Salesforce functionality, integrations, and custom developments. * Collaborate with developers, business analysts, and project teams to understand requirements and define effective test strategies. * Perform thorough manual testing of Salesforce applications, identifying and documenting defects for ...
        Yolk Recruitment are working with a leading global organisation that continues to grow and invest in its Salesforce capability. Known for its collaborative culture and commitment to continuous improvement, this is an excellent opportunity for a Salesforce QA Tester to make a real impact within a forward-thinking technology team. We're looking for someone who's passionate about quality and experienced in ensuring Salesforce solutions meet the highest standards of reliability and performance. You'll work closely with cross-functional teams to test, validate, and optimise Salesforce functionality, integrations, and custom developments. * Collaborate with developers, business analysts, and project teams to understand requirements and define effective test strategies. * Perform thorough manual testing of Salesforce applications, identifying and documenting defects for ...
        more
        Job Overview - In this role, youll play a key part in developing and leading data centre network initiatives, working collaboratively with diverse Infrastructure and Global Networks teams across multiple time zones. Together, youll deliver change and transformation across business-critical services. Some out-of-hours work may occasionally be required to support global operations. Youll bring your expertise as a skilled Data Centre Network Engineer to design, implement, manage, and support the networking infrastructure that underpins our data centres. Youll possess a strong knowledge of enterprise networking technologies, particularly Cisco ACI and Cisco SD-WAN, ensuring our networks are secure, scalable, and high-performing. Experience with automation and Infrastructure-as-Code (IaC) will help you develop efficient and reliable solutions that strengthen Arms global ..
        Job Overview - In this role, youll play a key part in developing and leading data centre network initiatives, working collaboratively with diverse Infrastructure and Global Networks teams across multiple time zones. Together, youll deliver change and transformation across business-critical services. Some out-of-hours work may occasionally be required to support global operations. Youll bring your expertise as a skilled Data Centre Network Engineer to design, implement, manage, and support the networking infrastructure that underpins our data centres. Youll possess a strong knowledge of enterprise networking technologies, particularly Cisco ACI and Cisco SD-WAN, ensuring our networks are secure, scalable, and high-performing. Experience with automation and Infrastructure-as-Code (IaC) will help you develop efficient and reliable solutions that strengthen Arms global ..
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        Join a fast-growing AI startup transforming a trillion-pound industry through intelligent automation. We're building the next generation of workflow technology - streamlining complex, manual processes and empowering professionals to focus on the work that truly matters. If you love solving deep technical problems, shaping architecture, and seeing your code have a real-world impact, this is a chance to build something meaningful from the ground up. The Role - We're looking for a Senior Backend Engineer to take ownership of key backend services that power our AI-driven platform. You'll work closely with product, frontend, and AI teams to design, build, and scale backend systems that handle large-scale data, complex workflows, and real-time interactions. You'll join a small, high-calibre team where your ideas genuinely shape the direction of the product and the company.
        Join a fast-growing AI startup transforming a trillion-pound industry through intelligent automation. We're building the next generation of workflow technology - streamlining complex, manual processes and empowering professionals to focus on the work that truly matters. If you love solving deep technical problems, shaping architecture, and seeing your code have a real-world impact, this is a chance to build something meaningful from the ground up. The Role - We're looking for a Senior Backend Engineer to take ownership of key backend services that power our AI-driven platform. You'll work closely with product, frontend, and AI teams to design, build, and scale backend systems that handle large-scale data, complex workflows, and real-time interactions. You'll join a small, high-calibre team where your ideas genuinely shape the direction of the product and the company.
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        FEATURED

        Front End Developer

        Oscar Associates (UK) Limited
        London
        £300 - £400 per day
        We're looking for an experienced Front-End Developer to join a fast-paced digital transformation project for a leading UK-based organisation in the manufacturing sector. This is an opportunity to make an immediate impact on a complex internal system used across multiple teams. You'll be joining at the latter stages of a large internal rebuild, helping optimise and refine an order processing platform that integrates data from over 40 different software tools. The ideal candidate will have a sharp eye for detail, a strong understanding of front-end best practices, and the ability to hit the ground running in a dynamic environment. * JavaScript (ES6+) * Vue.js * HTML5 / CSS3 * REST APIs & JSON * Enhance and streamline the user interface for an internal order processing system * Optimise workflows and improve system usability for internal teams
        We're looking for an experienced Front-End Developer to join a fast-paced digital transformation project for a leading UK-based organisation in the manufacturing sector. This is an opportunity to make an immediate impact on a complex internal system used across multiple teams. You'll be joining at the latter stages of a large internal rebuild, helping optimise and refine an order processing platform that integrates data from over 40 different software tools. The ideal candidate will have a sharp eye for detail, a strong understanding of front-end best practices, and the ability to hit the ground running in a dynamic environment. * JavaScript (ES6+) * Vue.js * HTML5 / CSS3 * REST APIs & JSON * Enhance and streamline the user interface for an internal order processing system * Optimise workflows and improve system usability for internal teams
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        Data Migration Engineer - CRM - Remote - Outside IR35

        The Bridge (IT Recruitment) Limited
        The Borough, SE1 0AA
        £400 - 500 per day + None
        This is a fantastic opportunity to work as a Data Migration Engineer for a publishing company, on a remote contract, initially for 3 months and outside IR35. This Data Migration Engineer will join a team, responsible for the migration 6 CRMs to 1 new CRM and migrating 20 million rows of data. * CRM migration * APIs * Json * XML * Low code * Airtable (desirable) If you do have the relevant skills for this Data Migration Engineer contract, please do apply.
        This is a fantastic opportunity to work as a Data Migration Engineer for a publishing company, on a remote contract, initially for 3 months and outside IR35. This Data Migration Engineer will join a team, responsible for the migration 6 CRMs to 1 new CRM and migrating 20 million rows of data. * CRM migration * APIs * Json * XML * Low code * Airtable (desirable) If you do have the relevant skills for this Data Migration Engineer contract, please do apply.
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        Airtable Developer - Remote - Outside IR35

        The Bridge (IT Recruitment) Limited
        The Borough, SE1 0AA
        £450 - 500 per day
        This is a fantastic opportunity to work as an Airtime Developer on a long term contract, outside IR35, on a remote basis. This Airtable Developer will be responsible for migrating 20 million rows of data and 6 CRMs into 1 CRM. * Airtable * APIs * AI * Databases If you do have the relevant experience for this Airtable Developer position, please do apply.
        This is a fantastic opportunity to work as an Airtime Developer on a long term contract, outside IR35, on a remote basis. This Airtable Developer will be responsible for migrating 20 million rows of data and 6 CRMs into 1 CRM. * Airtable * APIs * AI * Databases If you do have the relevant experience for this Airtable Developer position, please do apply.
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        AI Deployment Engineer

        Inspiring Search
        SE15, South East London
        £30,000 per annum
        In 1914, Ernest Shackleton placed an advertisement seeking men for his Antarctic expeditionFor hazardousjourneyintounchartedterritory. Smallwages. Longhoursnavigatingcomplexity. Thousandsresponded. Today,weseekadifferentkindofpioneer;onewhowillchartthecoursethroughtheunexploredfrontierofartificial intelligence. We are not just implementing AI; we're defining what's possible. We're one of the first to venture into territories where others see only questions. Where they see complexity, we see opportunity. Wherethey see risk, we see the path forward. This role is looking for a talented AI Deployment Engineer who is keen to join a start-up! You will be joining a start-up with a mission to deploy cutting-edge AI systems for marketing businesses. This isn't about following playbooks, there are none. You'll be writing them. Every implementation is a first ascent.
        In 1914, Ernest Shackleton placed an advertisement seeking men for his Antarctic expeditionFor hazardousjourneyintounchartedterritory. Smallwages. Longhoursnavigatingcomplexity. Thousandsresponded. Today,weseekadifferentkindofpioneer;onewhowillchartthecoursethroughtheunexploredfrontierofartificial intelligence. We are not just implementing AI; we're defining what's possible. We're one of the first to venture into territories where others see only questions. Where they see complexity, we see opportunity. Wherethey see risk, we see the path forward. This role is looking for a talented AI Deployment Engineer who is keen to join a start-up! You will be joining a start-up with a mission to deploy cutting-edge AI systems for marketing businesses. This isn't about following playbooks, there are none. You'll be writing them. Every implementation is a first ascent.
        more
        FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategies, and market segments. Its products are trusted by institutional and retail investors, asset managers, and pension funds to benchmark performance, build investment portfolios, and manage risk. With a reputation for innovation, transparency, and robust governance, FTSE Russell plays a critical role in shaping global financial markets. FTSE Russell is seeking a hands-on dynamic software development leader to drive a team of software engineers building robust equity index capabilities and indexes.
        FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategies, and market segments. Its products are trusted by institutional and retail investors, asset managers, and pension funds to benchmark performance, build investment portfolios, and manage risk. With a reputation for innovation, transparency, and robust governance, FTSE Russell plays a critical role in shaping global financial markets. FTSE Russell is seeking a hands-on dynamic software development leader to drive a team of software engineers building robust equity index capabilities and indexes.
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        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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        We're looking for an experienced Senior Application Support Engineer to join a growing IT team and play a key role in supporting critical business applications across a modern and complex technology stack. * Investigating and resolving technical incidents, ensuring minimal downtime and effective root cause analysis * Proactively maintaining and optimising applications, performing upgrades and configuration changes * Monitoring system performance, defining service-level objectives, and addressing bottlenecks before they impact users * Collaborating closely with engineering and business teams to drive operational excellence * Enhancing processes, documentation, and tooling to support continuous improvement * Proven experience in an application support or support engineering role, within financial services ideally, or another regulated environment
        We're looking for an experienced Senior Application Support Engineer to join a growing IT team and play a key role in supporting critical business applications across a modern and complex technology stack. * Investigating and resolving technical incidents, ensuring minimal downtime and effective root cause analysis * Proactively maintaining and optimising applications, performing upgrades and configuration changes * Monitoring system performance, defining service-level objectives, and addressing bottlenecks before they impact users * Collaborating closely with engineering and business teams to drive operational excellence * Enhancing processes, documentation, and tooling to support continuous improvement * Proven experience in an application support or support engineering role, within financial services ideally, or another regulated environment
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        Principal Software Engineer - Frontend

        Fruition Group
        London
        £95000 - £120000 per annum + Equity + Benefits
        London (Remote First - Occasional travel) Salary: £95,000 - £120,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking a talented Principal Frontend 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. * Set the technical vision and architectural direction for frontend systems, ensuring performance, scalability, and maintainability across complex products. * Lead design and delivery of modern, component-based web applications built with TypeScript, React, and Redux, integrating seamlessly with cloud-based APIs and data pipelines. * Collaborate with engineering, design, and product leadership to define long-term frontend st
        London (Remote First - Occasional travel) Salary: £95,000 - £120,000 + equity + benefits - An established, global technology business within the hospitality-tech industry is seeking a talented Principal Frontend 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. * Set the technical vision and architectural direction for frontend systems, ensuring performance, scalability, and maintainability across complex products. * Lead design and delivery of modern, component-based web applications built with TypeScript, React, and Redux, integrating seamlessly with cloud-based APIs and data pipelines. * Collaborate with engineering, design, and product leadership to define long-term frontend st
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        Salesforce Developer

        167 Solutions Ltd
        SW10, South West London
        From £75,000 to £85,000 per annum
        Salesforce Technical Lead London - Location: London (Hybrid) Salary: £85,000 per annum + benefits - Type: Permanent | Full-Time - Recruitment Partner: 167 Solutions Ltd - 167 Solutions Ltd is proud to be working in partnership with a forward-thinking organisation that is investing heavily in its digital transformation. We are seeking an experienced Salesforce Technical Lead to take ownership of the platforms technical direction and play a key role in delivering enterprise-grade Salesforce solutions. This is a hands-on leadership role ideal for someone who enjoys both solution architecture and technical delivery, and wants to shape a scalable Salesforce ecosystem within a growing organisation. Key Responsibilities * Lead the technical design, development and implementation of Salesforce solutions. * Translate business requirements into robust and scalable technical arc
        Salesforce Technical Lead London - Location: London (Hybrid) Salary: £85,000 per annum + benefits - Type: Permanent | Full-Time - Recruitment Partner: 167 Solutions Ltd - 167 Solutions Ltd is proud to be working in partnership with a forward-thinking organisation that is investing heavily in its digital transformation. We are seeking an experienced Salesforce Technical Lead to take ownership of the platforms technical direction and play a key role in delivering enterprise-grade Salesforce solutions. This is a hands-on leadership role ideal for someone who enjoys both solution architecture and technical delivery, and wants to shape a scalable Salesforce ecosystem within a growing organisation. Key Responsibilities * Lead the technical design, development and implementation of Salesforce solutions. * Translate business requirements into robust and scalable technical arc
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        Unit4 Lead Technical Consultant

        Data Careers
        Southwark, SE1
        £65000 - £80000 per annum + + bonus
        Permanent | Fully Remote (UK) £65,000 - £80,000 + bonus - Key Skills: SQL (T-SQL or PL/SQL) * Unit4 ERP Datasets / Data Dictionary * REST & SOAP Web Services * PowerShell * RERX / ARC / Xtra Reporting - About the Role - We're seeking a technically focused Unit4 Lead Consultant to take ownership of complex solution design, development, and delivery for a leading IT consultancy. This role is hands-on-ideal for someone who thrives on solving technical challenges, building integrations, and optimising data-driven solutions within Unit4 ERP. You'll play a key role in defining technical strategy, developing custom extensions, reports, and integrations, and ensuring solutions are robust, scalable, and high performing. You'll also provide technical direction and guidance to a small team, ensuring best practices and knowledge sharing across projects. What You'll Do
        Permanent | Fully Remote (UK) £65,000 - £80,000 + bonus - Key Skills: SQL (T-SQL or PL/SQL) * Unit4 ERP Datasets / Data Dictionary * REST & SOAP Web Services * PowerShell * RERX / ARC / Xtra Reporting - About the Role - We're seeking a technically focused Unit4 Lead Consultant to take ownership of complex solution design, development, and delivery for a leading IT consultancy. This role is hands-on-ideal for someone who thrives on solving technical challenges, building integrations, and optimising data-driven solutions within Unit4 ERP. You'll play a key role in defining technical strategy, developing custom extensions, reports, and integrations, and ensuring solutions are robust, scalable, and high performing. You'll also provide technical direction and guidance to a small team, ensuring best practices and knowledge sharing across projects. What You'll Do
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        AI Automation & Solutions Engineer

        Searchability (UK) Ltd
        TN13, Sevenoaks
        £45000 - £75000 per annum
        Opportunity for a AI Engineer Developer to work for an established FinTech company * Salary up to £75k depending on experience * Hybrid working out of Sevenoaks HQ * Tech stack - LLMs, Langchain, OpenAI, n8n, Flowable - We're working with a well-established, technology-driven FinTech company that's redefining how automation and AI power financial services. Combining innovation with stability, they've built a reputation as one of the UK's fastest-growing and most forward-thinking finance providers, now they're looking to strengthen their AI and automation capability. * Build intelligent workflows using n8n, Microsoft Power Automate, Flowable, and similar tools. * Design and implement agentic AI solutions, integrating LLMs and frameworks such as LangChain, AutoGen, and RAG pipelines with platforms like OpenAI.
        Opportunity for a AI Engineer Developer to work for an established FinTech company * Salary up to £75k depending on experience * Hybrid working out of Sevenoaks HQ * Tech stack - LLMs, Langchain, OpenAI, n8n, Flowable - We're working with a well-established, technology-driven FinTech company that's redefining how automation and AI power financial services. Combining innovation with stability, they've built a reputation as one of the UK's fastest-growing and most forward-thinking finance providers, now they're looking to strengthen their AI and automation capability. * Build intelligent workflows using n8n, Microsoft Power Automate, Flowable, and similar tools. * Design and implement agentic AI solutions, integrating LLMs and frameworks such as LangChain, AutoGen, and RAG pipelines with platforms like OpenAI.
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        Automation Test Engineer

        Data Careers
        London
        £55000 - £90000 per annum + comprehensive range of Employee Benefits
        Automation Tester (ETRM Platforms) Permanent - Location: UK - Remote - Salary: £55,000 - £90,000 (+ benefits) Skills: ETRM platform experience, (Openlink Endur, Findur etc.), Automation testing Python, Java etc. We are seeking Automation Testers, (up to Lead Tester), for a leading software company that delivers advanced solutions for trading and risk management across global financial and energy markets. There are options for both fully remote and hybrid / London working. What you'll bring * Programming & Scripting: Python, Java, JavaScript, C++, Scriban * Web Technologies: RESTful APIs, HTTP, JSON, HTML, CSS, Node.js * Databases: SQL Server, MySQL, PostgreSQL, MongoDB * Tools & Frameworks: Git, Docker, Jenkins, Kubernetes, Agile (Scrum & Kanban), JIRA, Pytest, Powershell * Operating Systems: Linux, Windows * CI/CD pipelines and debugging expertise * BDD frameworks su
        Automation Tester (ETRM Platforms) Permanent - Location: UK - Remote - Salary: £55,000 - £90,000 (+ benefits) Skills: ETRM platform experience, (Openlink Endur, Findur etc.), Automation testing Python, Java etc. We are seeking Automation Testers, (up to Lead Tester), for a leading software company that delivers advanced solutions for trading and risk management across global financial and energy markets. There are options for both fully remote and hybrid / London working. What you'll bring * Programming & Scripting: Python, Java, JavaScript, C++, Scriban * Web Technologies: RESTful APIs, HTTP, JSON, HTML, CSS, Node.js * Databases: SQL Server, MySQL, PostgreSQL, MongoDB * Tools & Frameworks: Git, Docker, Jenkins, Kubernetes, Agile (Scrum & Kanban), JIRA, Pytest, Powershell * Operating Systems: Linux, Windows * CI/CD pipelines and debugging expertise * BDD frameworks su
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        Frequently Asked Questions

        How many permanent API jobs are there in Welwyn Garden City?
        There are 37 permanent API jobs within 20 miles of Welwyn Garden City available on CWJobs right now.

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