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        57 Permanent API jobs in Harlow + 20 miles

        Lead Data Architect

        Anson Mccade
        WC1, Central London, W C1R
        GBP 75,000.00 - 83,000.00 per year;GBP 67,000.00 per year;GBP 76,000.0
        £75,000 - 83,000 GBP - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent - Locations: Leeds, Manchester, Birmingham, Bristol, Glasgow, or London (Hybrid - up to 2 days on-site per week, remainder remote) Salary: £67,000 - £76,000 (non-London) / Up to £83,000 (London) + Benefits - A respected digital consultancy is hiring a Lead Data Architect to join its growing Data Engineering practice. Known for delivering modern, human-centred services across public and private sectors, this organisation supports clients through meaningful transformation by combining data, design, and engineering. This role is ideal for experienced architects who enjoy shaping cloud-native data platforms, working in multidisciplinary teams, and embedding data governance and architectural rigour across complex service ecosystems.
        £75,000 - 83,000 GBP - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent - Locations: Leeds, Manchester, Birmingham, Bristol, Glasgow, or London (Hybrid - up to 2 days on-site per week, remainder remote) Salary: £67,000 - £76,000 (non-London) / Up to £83,000 (London) + Benefits - A respected digital consultancy is hiring a Lead Data Architect to join its growing Data Engineering practice. Known for delivering modern, human-centred services across public and private sectors, this organisation supports clients through meaningful transformation by combining data, design, and engineering. This role is ideal for experienced architects who enjoy shaping cloud-native data platforms, working in multidisciplinary teams, and embedding data governance and architectural rigour across complex service ecosystems.
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        PREMIUM

        Senior Python Developer - Hybrid Remote

        VERTECH GROUP (UK) LTD
        NW3, North West London
        From £90,000 to £97,000 per annum + Benefits
        Senior Python Developer - Location: Hybrid - 3 days remote / 2 days in NW London - Salary: Circa 90K 97K + Benefits - Senior Python Developer required by a fast-growing, Top Tech Company! This is a varied, challenging role within a talented team, where youll focus on building scalable, reliable backend systems while also sharing knowledge and guiding less experienced developers where needed * Solid background in backend development using Python (Flask, FastAPI, or similar) * Good skills in Google Cloud Platform (GCP) * Experience developing RESTful APIs * Familiarity with Cloud Functions and Cloud Run * Skilled in Docker and/or Kubernetes * Understanding of CI/CD processes * Strong grasp of clean code practices and scalable architecture * Excellent communication and collaboration skills - Tremendous opportunity to be part of a supportive, innovative environment with c
        Senior Python Developer - Location: Hybrid - 3 days remote / 2 days in NW London - Salary: Circa 90K 97K + Benefits - Senior Python Developer required by a fast-growing, Top Tech Company! This is a varied, challenging role within a talented team, where youll focus on building scalable, reliable backend systems while also sharing knowledge and guiding less experienced developers where needed * Solid background in backend development using Python (Flask, FastAPI, or similar) * Good skills in Google Cloud Platform (GCP) * Experience developing RESTful APIs * Familiarity with Cloud Functions and Cloud Run * Skilled in Docker and/or Kubernetes * Understanding of CI/CD processes * Strong grasp of clean code practices and scalable architecture * Excellent communication and collaboration skills - Tremendous opportunity to be part of a supportive, innovative environment with c
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        FEATURED

        Java Quantitative Developer Low Latency

        James Joseph Associates Limited
        EC2N, City of London
        From £150,000 to £175,000 per annum Circa 50-100% Bonus + Pension + Be
        Our client is a leading and well-established player in the Digital Asset and Cryptocurrency Quantitative/Algorithmic trading industry. The business is going from strength to strength, they are currently going through a period of exponential growth and are enjoying record profits The business is actively expanding as there is additional headcount for a number trade platform specialist Java Development with a focus on either/or Quantitative Development or low-latency performance optimization. You will be working on greenfield projects to build out and enhance their low latency trading systems. Working in a fast-paced trading environment as a Quant Developer, where you will collaborate closely with expert traders, quantitative analysts, and engineering specialists to craft and fine-tune trading strategies across both spot and derivative markets.
        Our client is a leading and well-established player in the Digital Asset and Cryptocurrency Quantitative/Algorithmic trading industry. The business is going from strength to strength, they are currently going through a period of exponential growth and are enjoying record profits The business is actively expanding as there is additional headcount for a number trade platform specialist Java Development with a focus on either/or Quantitative Development or low-latency performance optimization. You will be working on greenfield projects to build out and enhance their low latency trading systems. Working in a fast-paced trading environment as a Quant Developer, where you will collaborate closely with expert traders, quantitative analysts, and engineering specialists to craft and fine-tune trading strategies across both spot and derivative markets.
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        Lead Engineer

        GH Engage Limited
        The City, EC3
        £55000 - £57500 per annum + 9% Pension, Medical, 25 days annual leave
        Maintenance | Fit Outs | Permits to Work £55,000/annum + bonus | Exceptional client-side benefits | Client Side - 13 Month Fixed-Term-Contract - GH Engage are currently seeking an experienced Lead Engineer with a background in electrical / mechanical engineering maintenance for a role in the City of London. As a Lead Engineer, you will support the maintenance team and Fit-Out Supervisor in managing tenant and landlord fit-out projects, as well as performing maintenance, diagnostics, and fault finding on HVAC and electrical plant. * You will work closely with tenants, contractors, and consultants to monitor maintenance works on landlord plant and equipment, including electrical, mechanical, water treatment, and HVAC systems. * Review contractor and tenant risk assessments and method statements, monitor permits to work, and control access to plant areas.
        Maintenance | Fit Outs | Permits to Work £55,000/annum + bonus | Exceptional client-side benefits | Client Side - 13 Month Fixed-Term-Contract - GH Engage are currently seeking an experienced Lead Engineer with a background in electrical / mechanical engineering maintenance for a role in the City of London. As a Lead Engineer, you will support the maintenance team and Fit-Out Supervisor in managing tenant and landlord fit-out projects, as well as performing maintenance, diagnostics, and fault finding on HVAC and electrical plant. * You will work closely with tenants, contractors, and consultants to monitor maintenance works on landlord plant and equipment, including electrical, mechanical, water treatment, and HVAC systems. * Review contractor and tenant risk assessments and method statements, monitor permits to work, and control access to plant areas.
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        NEWFEATURED

        Data Engineer - AI Projects

        Henderson Scott
        Stevenage, Hertfordshire, SG1 2DA
        £50000.00 - £55000.00 per annum + Bonus, + Substantial Benefits
        Data Engineer - Generative AI Projects?? Hybrid | 2-3 Days On-Site | Up to £55,000 + Bonus + Package?? British Citizens Only | BPSS Clearance Required - We're hiring a Data Engineer with a passion for automation, clean pipelines, and the future of AI. This is your chance to shape how data powers Generative AI and NLP tools in a secure, high-tech organisation working on projects that matter. If you're keen to work on innovative internal use-cases - from AI assistants to intelligent search and document automation - this is the perfect next step. What You'll Be Doing * Building and maintaining data pipelines across structured & unstructured sources * Collaborating with internal teams to support Generative AI and NLP projects * Ensuring data is secure, compliant, high-quality, and easy to access * Bringing your ideas to the table as we explore new tools and technologies
        Data Engineer - Generative AI Projects?? Hybrid | 2-3 Days On-Site | Up to £55,000 + Bonus + Package?? British Citizens Only | BPSS Clearance Required - We're hiring a Data Engineer with a passion for automation, clean pipelines, and the future of AI. This is your chance to shape how data powers Generative AI and NLP tools in a secure, high-tech organisation working on projects that matter. If you're keen to work on innovative internal use-cases - from AI assistants to intelligent search and document automation - this is the perfect next step. What You'll Be Doing * Building and maintaining data pipelines across structured & unstructured sources * Collaborating with internal teams to support Generative AI and NLP projects * Ensuring data is secure, compliant, high-quality, and easy to access * Bringing your ideas to the table as we explore new tools and technologies
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        NEWFEATURED
        Are you passionate about creating smart, effective solutions that make a real difference? In a system as critical and complex as the NHS, poor inventory management doesn’t just waste money — it risks lives, reduces efficiency, and erodes trust. Improvements in digital tracking, data integration, and supply chain coordination are essential to mitigate these effects. At Ingenica Solutions we build smart inventory management software solutions to help the healthcare sector gain control over inventory, track usage at the point of care, and drive efficiency across the supply chain. If you want to build solutions that have real impact on the lives of others, we invite you to join our highly talented software team as a Microsoft Dynamics Nav Developer. This is an excellent opportunity to make a meaningful impact within a collaborative and forward-thinking environment.
        Are you passionate about creating smart, effective solutions that make a real difference? In a system as critical and complex as the NHS, poor inventory management doesn’t just waste money — it risks lives, reduces efficiency, and erodes trust. Improvements in digital tracking, data integration, and supply chain coordination are essential to mitigate these effects. At Ingenica Solutions we build smart inventory management software solutions to help the healthcare sector gain control over inventory, track usage at the point of care, and drive efficiency across the supply chain. If you want to build solutions that have real impact on the lives of others, we invite you to join our highly talented software team as a Microsoft Dynamics Nav Developer. This is an excellent opportunity to make a meaningful impact within a collaborative and forward-thinking environment.
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        NEW
        Senior React Developer / Front End Engineer (React TypeScript Data Visualisation) London to £80k - Are you a skilled Software Developer with strong React and Data Visualisation skills combined with a good appreciation of financial markets and technology? You could be joining a growing, global, Fintech services company that has seen 30-40% year on year growth for the past 10 years and has ambitious growth plans. As a Senior React Developer you'll design and develop new features and enhancements to the front end of the platform with a focus on real-time data visualisation on business critical systems using React. You'll collaborate with backend engineers to build complex financial products. You'll join the team in Central London three days a week with flexibility to work from home the other two days.
        Senior React Developer / Front End Engineer (React TypeScript Data Visualisation) London to £80k - Are you a skilled Software Developer with strong React and Data Visualisation skills combined with a good appreciation of financial markets and technology? You could be joining a growing, global, Fintech services company that has seen 30-40% year on year growth for the past 10 years and has ambitious growth plans. As a Senior React Developer you'll design and develop new features and enhancements to the front end of the platform with a focus on real-time data visualisation on business critical systems using React. You'll collaborate with backend engineers to build complex financial products. You'll join the team in Central London three days a week with flexibility to work from home the other two days.
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        NEWPREMIUM

        Data Software Engineer

        Cobalt Recruitment.
        City of London, London
        £70000.00 - £90000.00 per annum
        About the Company - You'll be joining a global leader in real estate services and technology solutions. Known for combining deep market expertise with cutting-edge innovation, this business is committed to modernising how property and investment decisions are made. You'll be part of a collaborative, forward-thinking environment that values creativity, accountability, and growth-where your contributions will directly shape the future of real estate technology. Role Responsibilities * Architect, build, and optimise scalable ETL pipelines for diverse datasets. * Onboard, document, and curate external datasets for internal use. * Perform data validation, forensic analysis, and troubleshooting. * Deliver high-quality, maintainable Python code and participate in peer reviews. * Collaborate with stakeholders and researchers to support analytics and product development.
        About the Company - You'll be joining a global leader in real estate services and technology solutions. Known for combining deep market expertise with cutting-edge innovation, this business is committed to modernising how property and investment decisions are made. You'll be part of a collaborative, forward-thinking environment that values creativity, accountability, and growth-where your contributions will directly shape the future of real estate technology. Role Responsibilities * Architect, build, and optimise scalable ETL pipelines for diverse datasets. * Onboard, document, and curate external datasets for internal use. * Perform data validation, forensic analysis, and troubleshooting. * Deliver high-quality, maintainable Python code and participate in peer reviews. * Collaborate with stakeholders and researchers to support analytics and product development.
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        NEW

        Salesforce Architect

        Hireful
        Central London, London
        Up to £90K Basic + 10% Bonus + Benefits package
        Are you an experienced Salesforce Architect, looking to take on a challenging role, at a global, 500+ staff strong UK based Software product company? You’ll be keen to take on a key role within the Data Ops team & own all things Salesforce related, across the technical, data & stakeholder management piece. Working across the business in this highly visible role, not only is Salesforce used extensively, internally, but they are also major Salesforce partners & are embedded into the Salesforce Ecosystem. Mainly, you should be a technical expert in Salesforce but also have the functional soft skills to make sure that the architecture & business requirements are effectively translated into reality. Role title: Salesforce Architect. Senior Salesforce Developer. Location: Central London – but largely irrelevant as this role is 98% remote.
        Are you an experienced Salesforce Architect, looking to take on a challenging role, at a global, 500+ staff strong UK based Software product company? You’ll be keen to take on a key role within the Data Ops team & own all things Salesforce related, across the technical, data & stakeholder management piece. Working across the business in this highly visible role, not only is Salesforce used extensively, internally, but they are also major Salesforce partners & are embedded into the Salesforce Ecosystem. Mainly, you should be a technical expert in Salesforce but also have the functional soft skills to make sure that the architecture & business requirements are effectively translated into reality. Role title: Salesforce Architect. Senior Salesforce Developer. Location: Central London – but largely irrelevant as this role is 98% remote.
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        NEWFEATURED

        Technical Client Services / Implementation Analyst - Risk and Python

        CBSbutler Holdings Limited
        EC1, City of London
        £45000 - £65000 per annum + Bonus + Full Benefits
        Global Financial Services Firm is hiring for a Technical Client Implementation Analyst / Specialist with strong analytical, in-depth Derivatives / Margining experience and knowledge and client services skills to be based in their London office. Financial Services experience is essential, with a strong understanding of the trading lifecycle, as well as technical skills in Python (writing queries and scripts) and APIs. This is a permanent role. They have a hybrid set-up of 2-3 days in the office. Salary ranges between £45K - £65K, depending on experience. This role plays a key part in ensuring smooth client onboarding and implementation, while supporting ongoing client success. Youll be involved in coordinating technical integrations, assisting with solution rollouts, and providing hands-on support throughout the client lifecycle.
        Global Financial Services Firm is hiring for a Technical Client Implementation Analyst / Specialist with strong analytical, in-depth Derivatives / Margining experience and knowledge and client services skills to be based in their London office. Financial Services experience is essential, with a strong understanding of the trading lifecycle, as well as technical skills in Python (writing queries and scripts) and APIs. This is a permanent role. They have a hybrid set-up of 2-3 days in the office. Salary ranges between £45K - £65K, depending on experience. This role plays a key part in ensuring smooth client onboarding and implementation, while supporting ongoing client success. Youll be involved in coordinating technical integrations, assisting with solution rollouts, and providing hands-on support throughout the client lifecycle.
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        6 Month contract - 40 hours per week - Inside IR35 - Hybrid 1 office day - London Farringdon office address: 47-53 Charterhouse St, London, EC1M 6PB - We are seeking a talented and motivated Frontend Developer with strong expertise in TypeScript to join our growing development team. In this role, you will work on building high-quality, scalable, and responsive web applications using React and TypeScript. You will collaborate closely with cross-functional teams to deliver exceptional user experiences, optimize performance, and contribute to the overall architecture of our platform. Initially it will be a six-month contract but there is potential for it to be extended. The role is Hybrid, with one day a week being based in their London office. It is a full-time role, 40 hours per week. * Develop and maintain scalable and responsive web applications using React.js and Ty
        6 Month contract - 40 hours per week - Inside IR35 - Hybrid 1 office day - London Farringdon office address: 47-53 Charterhouse St, London, EC1M 6PB - We are seeking a talented and motivated Frontend Developer with strong expertise in TypeScript to join our growing development team. In this role, you will work on building high-quality, scalable, and responsive web applications using React and TypeScript. You will collaborate closely with cross-functional teams to deliver exceptional user experiences, optimize performance, and contribute to the overall architecture of our platform. Initially it will be a six-month contract but there is potential for it to be extended. The role is Hybrid, with one day a week being based in their London office. It is a full-time role, 40 hours per week. * Develop and maintain scalable and responsive web applications using React.js and Ty
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        Technical Business Analyst

        Ncounter LTD
        EC1, City of London
        From £120,000 to £150,000 per annum Bonus and package
        Ncounter is hiring a hybrid Technical Business Analyst / Project Manager to join a high-performance technology team delivering complex trading solutions across global markets. Youll play a pivotal role in shaping products that underpin real-time financial decision-making, working across engineering, research, and infrastructure groups. Whether your strengths lie in requirements analysis or delivery management, this role offers the chance to influence business-critical systems in a high-frequency trading environment. Where youll make an impact - Youll either join the analysis team, acting as the key translator between business goals and technical implementation, or take the reins on end-to-end project deliverydepending on your expertise and focus. * Capture and refine detailed business and technical requirements * Translate complex problems into structured, executable
        Ncounter is hiring a hybrid Technical Business Analyst / Project Manager to join a high-performance technology team delivering complex trading solutions across global markets. Youll play a pivotal role in shaping products that underpin real-time financial decision-making, working across engineering, research, and infrastructure groups. Whether your strengths lie in requirements analysis or delivery management, this role offers the chance to influence business-critical systems in a high-frequency trading environment. Where youll make an impact - Youll either join the analysis team, acting as the key translator between business goals and technical implementation, or take the reins on end-to-end project deliverydepending on your expertise and focus. * Capture and refine detailed business and technical requirements * Translate complex problems into structured, executable
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        We are looking for an enthusiastic and proactive Automation Test Engineer who boasts experience with Python and Pytest to join our fantastic London based fintech client, working largely remote with monthly get togethers. This Automation Tester will be backend-focused, testing the server-side components, ensuring that the database (SQL), APIs, and business logic function correctly and efficiently. * Backend Automation testing skills with Python and Pytest. * Solid SQL skills and experience with relational databases. * Solid experience in automation testing using tools such as Selenium and Appium. * Batch processing experience. * Financial services / fintech experience. If you're passionate about testing, automation, and continuous learning, we would love to hear from you!
        We are looking for an enthusiastic and proactive Automation Test Engineer who boasts experience with Python and Pytest to join our fantastic London based fintech client, working largely remote with monthly get togethers. This Automation Tester will be backend-focused, testing the server-side components, ensuring that the database (SQL), APIs, and business logic function correctly and efficiently. * Backend Automation testing skills with Python and Pytest. * Solid SQL skills and experience with relational databases. * Solid experience in automation testing using tools such as Selenium and Appium. * Batch processing experience. * Financial services / fintech experience. If you're passionate about testing, automation, and continuous learning, we would love to hear from you!
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        Guidewire Developer

        Pioneer Search
        City of London, London
        £55000.00 - £65000.00 per annum
        Location: London / Hybrid (2 days in the office, 3 days from home) Salary: £55,000 - £65,000 - A Guidewire developer is required for a leading Lloyd's of London Insurance organisation, implementing a Guidewire Claims system. This is to join a brand-new team onboarding and implementing a Guidewire Claims system. You will have experience working with Guidewire, across either PolicyCenter BillingCenter or ClaimsCenter. As this is an initial migration and implementation you will be essential in assisting the organisation migrate from their existing claims platform to Claims Center which will be hosted in Guidewires Cloud. Ability to interact with stakeholders and to be involved in decisions affecting the implementation due to go live in 2026 is essential. You will have experience customising Guidewire in Gosu.
        Location: London / Hybrid (2 days in the office, 3 days from home) Salary: £55,000 - £65,000 - A Guidewire developer is required for a leading Lloyd's of London Insurance organisation, implementing a Guidewire Claims system. This is to join a brand-new team onboarding and implementing a Guidewire Claims system. You will have experience working with Guidewire, across either PolicyCenter BillingCenter or ClaimsCenter. As this is an initial migration and implementation you will be essential in assisting the organisation migrate from their existing claims platform to Claims Center which will be hosted in Guidewires Cloud. Ability to interact with stakeholders and to be involved in decisions affecting the implementation due to go live in 2026 is essential. You will have experience customising Guidewire in Gosu.
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        Senior Data Engineer

        Anson Mccade
        WC1, Central London, W C1R
        GBP 65,000.00 - 70,000.00 per year;GBP 57,000.00 per year;GBP 64,000.0
        £65,000 - 70,000 GBP - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent £57,000 - £64,000 (London up to £70,000) + Excellent Benefits - Hybrid / UK-Wide Locations - A respected digital consultancy is on the lookout for a Senior Data Engineer to join its growing data practice. This is a brilliant opportunity to be part of a human-focused, tech-forward environment that delivers bespoke data solutions for clients in both the public and private sectors. Senior Engineers here don't just write code-they shape outcomes. You'll join a collaborative, agile team that values technical excellence, continuous improvement, and inclusive delivery. The consultancy is known for combining engineering, data and user-centred design to build impactful platforms that matter. In this role, you'll take the lead in crafting data pipelines, designing c
        £65,000 - 70,000 GBP - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent £57,000 - £64,000 (London up to £70,000) + Excellent Benefits - Hybrid / UK-Wide Locations - A respected digital consultancy is on the lookout for a Senior Data Engineer to join its growing data practice. This is a brilliant opportunity to be part of a human-focused, tech-forward environment that delivers bespoke data solutions for clients in both the public and private sectors. Senior Engineers here don't just write code-they shape outcomes. You'll join a collaborative, agile team that values technical excellence, continuous improvement, and inclusive delivery. The consultancy is known for combining engineering, data and user-centred design to build impactful platforms that matter. In this role, you'll take the lead in crafting data pipelines, designing c
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        PREMIUM

        Senior Technical Consultant - Genesys

        COMPUTACENTER (UK) LIMITED
        Hatfield, Hertfordshire, AL10 9TW
        Unspecified
        Life on the team - Join a high-impact team at the forefront of global service delivery innovation. As part of the GSD Systems team, youll play a key role in delivering and enhancing the contact centre technologies that support Computacenters Global Service Desk (GSD). With over 4,000 agents relying on our solutions daily, we ensure seamless multi-channel experiences from voice and email to web chat and chatbot with industry-leading reliability. You'll be surrounded by forward-thinking professionals who are passionate about technology, continuous improvement, and delivering exceptional customer experiences. This is your opportunity to shape the future of contact centre solutions within a dynamic, global organisation that values innovation, autonomy, and technical excellence. What you'll do * Act as the technical authority for the Genesys Cloud CX platform, leading the
        Life on the team - Join a high-impact team at the forefront of global service delivery innovation. As part of the GSD Systems team, youll play a key role in delivering and enhancing the contact centre technologies that support Computacenters Global Service Desk (GSD). With over 4,000 agents relying on our solutions daily, we ensure seamless multi-channel experiences from voice and email to web chat and chatbot with industry-leading reliability. You'll be surrounded by forward-thinking professionals who are passionate about technology, continuous improvement, and delivering exceptional customer experiences. This is your opportunity to shape the future of contact centre solutions within a dynamic, global organisation that values innovation, autonomy, and technical excellence. What you'll do * Act as the technical authority for the Genesys Cloud CX platform, leading the
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        Role: Backend Engineer (NestJS, SaaS, ERP) We're hiring a seasoned backend engineer to lead our platform rebuild You'll collaborate closely with the founder, shaping the product and scaling the tech. What You'll Do * Lead backend dev using NestJS * Design scalable APIs and ERP/accounting tool integrations * Work with AI tools (OpenAI, Vertex AI) * Define architecture and set engineering standards * Mentor junior developers What We're Looking For * Strong NestJS + SaaS backend experience * ERP/accounting integration experience * Solid JavaScript/TypeScript skills * Comfortable owning projects end-to-end * Bonus: Experience with AI APIs and frontend (Next.js/Node.js)
        Role: Backend Engineer (NestJS, SaaS, ERP) We're hiring a seasoned backend engineer to lead our platform rebuild You'll collaborate closely with the founder, shaping the product and scaling the tech. What You'll Do * Lead backend dev using NestJS * Design scalable APIs and ERP/accounting tool integrations * Work with AI tools (OpenAI, Vertex AI) * Define architecture and set engineering standards * Mentor junior developers What We're Looking For * Strong NestJS + SaaS backend experience * ERP/accounting integration experience * Solid JavaScript/TypeScript skills * Comfortable owning projects end-to-end * Bonus: Experience with AI APIs and frontend (Next.js/Node.js)
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        Key Responsibilities * Lead the frontend rebuild of the platform's first major version using React (Next.js) and Node.js. * Work closely with design, backend, and product teams to develop interactive features that simplify complex financial processes. * Develop secure, scalable UI components integrated with backend APIs and third-party systems. * Contribute to the development and upkeep of a modern, component-based design system. * Improve usability and performance across browsers and devices with a focus on speed and polish. * Incorporate user feedback to continuously refine the experience. Requirements * Solid experience building modern web applications with React and Node.js. * Background in SaaS development, ideally within finance, ERP, or construction tech domains. * Strong understanding of RESTful APIs, authentication, and state management (e.g., Redux, React Qu
        Key Responsibilities * Lead the frontend rebuild of the platform's first major version using React (Next.js) and Node.js. * Work closely with design, backend, and product teams to develop interactive features that simplify complex financial processes. * Develop secure, scalable UI components integrated with backend APIs and third-party systems. * Contribute to the development and upkeep of a modern, component-based design system. * Improve usability and performance across browsers and devices with a focus on speed and polish. * Incorporate user feedback to continuously refine the experience. Requirements * Solid experience building modern web applications with React and Node.js. * Background in SaaS development, ideally within finance, ERP, or construction tech domains. * Strong understanding of RESTful APIs, authentication, and state management (e.g., Redux, React Qu
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        Software Development Team Lead

        Hays
        EC1, City of London
        £90000.0 - £110000.0 per annum + Competitive + Benefits Package
        Programming Languages & Frameworks: TypeScript, Node.js, NestJS (REST API framework), AngularJS (or similar frontend frameworks) * Databases & Data Management: PostgreSQL, PostgREST (RESTful API layer over PostgreSQL)
        Programming Languages & Frameworks: TypeScript, Node.js, NestJS (REST API framework), AngularJS (or similar frontend frameworks) * Databases & Data Management: PostgreSQL, PostgREST (RESTful API layer over PostgreSQL)
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        NEW

        AI Engineer

        Comtecs
        EC1M, City of London
        From £75,000 to £90,000 per annum +Benefits
        Strong hands-on experience of the Microsoft AI stack, including Microsoft Copilot, Copilot Studio, Azure AI Foundry, Microsoft Graph API and Copilot within Microsoft 365 applications.
        Strong hands-on experience of the Microsoft AI stack, including Microsoft Copilot, Copilot Studio, Azure AI Foundry, Microsoft Graph API and Copilot within Microsoft 365 applications.
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        Frequently Asked Questions

        How many permanent API jobs are there in Harlow?
        There are 57 permanent API jobs within 20 miles of Harlow available on CWJobs right now.

        What other similar jobs are there to permanent API jobs in Harlow?
        As well as permanent API jobs in Harlow, you can find permanent IT, Software Development, Management, amongst many others.