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        104 Permanent API jobs in Watford + 20 miles

        Graduate Software Engineer 50k - Remote

        Leave 24
        The City, EC2
        From £30,000 to £50,000 per annum
        ASP.NET Web API
        ASP.NET Web API
        NEW

        .NET Developer

        Tech 4
        EC1, City of London
        From £60,000 to £70,000 per annum + excellent benefits
        C#, ASP.NET MVC, Web Services/ASP.NET Web API , REST API Asp.Net Core MS SQL server /PostgreSQL Entity Framework /LINQ Knowledge of ASP.NET Core and Client-side Frameworks (jQuery, Angular) Azure DevOps, Git repository and CI/CD Docker/Kubernetes Linux/Micro-Services Architecture - Experience planning and mapping out API integrations.
        C#, ASP.NET MVC, Web Services/ASP.NET Web API , REST API Asp.Net Core MS SQL server /PostgreSQL Entity Framework /LINQ Knowledge of ASP.NET Core and Client-side Frameworks (jQuery, Angular) Azure DevOps, Git repository and CI/CD Docker/Kubernetes Linux/Micro-Services Architecture - Experience planning and mapping out API integrations.
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        Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
        Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
        more
        NEW

        Data Engineer

        Singular Recruitment
        W1, Central London
        From £50,000 to £70,000 per annum
        API Development:Experience building data-centric APIs, especially withFastAPIon serverless platforms likeGoogle App Engine.
        API Development:Experience building data-centric APIs, especially withFastAPIon serverless platforms likeGoogle App Engine.
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        Senior Penetration Tester

        COMPUTACENTER (UK) LIMITED
        SE1, South East London
        Unspecified
        Conduct comprehensive penetration tests: Execute internal and external network penetration tests, web application penetration tests, mobile application penetration tests, API penetration tests, cloud security assessments, and social engineering simulations.
        Conduct comprehensive penetration tests: Execute internal and external network penetration tests, web application penetration tests, mobile application penetration tests, API penetration tests, cloud security assessments, and social engineering simulations.
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        Software Developer-MS-Stack

        Solus Accident Repair Centres
        North London, London
        GBP £35,000.00/Yr. - GBP £50,000.00/Yr.
        Work across a wide range of technologies, across web, mobile apps, API, backend, and databases which are currently hosted within Azure.
        Work across a wide range of technologies, across web, mobile apps, API, backend, and databases which are currently hosted within Azure.
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        NEW

        Global Claims IT Leader

        MARSH CORPORATE SERVICES LIMITED
        The City, EC3R 5BU
        Pension Scheme, Private Health Insurance & life insurance
        Being a cross-functional collaborator interfacing with MMC Enterprise Technology partners, Marsh-Operations, and Transformation Office will come naturally to you building a new set of reusable IT Microservices connected via a well-defined API structure.
        Being a cross-functional collaborator interfacing with MMC Enterprise Technology partners, Marsh-Operations, and Transformation Office will come naturally to you building a new set of reusable IT Microservices connected via a well-defined API structure.
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        NEWPREMIUM

        Senior MVC Developer

        Southern Communications Ltd
        HP2, Hemel Hempstead
        £75,000 per annum
        Take a lead role in the development and support ofMicrosoft MVC and .NET web applications and C# Console and API solutions, ensuring best practices are followed throughout the software lifecycle. * Proficient in.NET (C#), JavaScript, Web API, SQL Server, and working knowledge ofHTML, CSS, XML, JSON.
        Take a lead role in the development and support ofMicrosoft MVC and .NET web applications and C# Console and API solutions, ensuring best practices are followed throughout the software lifecycle. * Proficient in.NET (C#), JavaScript, Web API, SQL Server, and working knowledge ofHTML, CSS, XML, JSON.
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        NEW
        Build and work with modern API and microservices architectures
        Build and work with modern API and microservices architectures
        NEW

        Senior Full Stack Web Developer - ONSITE

        Profile 29
        IG10, Loughton
        From £70,000 to £120,000 per annum + benefits (see advert)
        As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
        As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
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        Build cloud-native applications using AWS services such as Lambda, API Gateway, DynamoDB, SQS, and EventBridge * Solid experience with AWS application services (Lambda, API Gateway, Step Functions, DynamoDB, etc.) * Proven ability to design and build modern, API-driven systems in a scalable resilient cloud-based platform * Experience with modern front-end frameworks and API integration (React, Vue, Angular)
        Build cloud-native applications using AWS services such as Lambda, API Gateway, DynamoDB, SQS, and EventBridge * Solid experience with AWS application services (Lambda, API Gateway, Step Functions, DynamoDB, etc.) * Proven ability to design and build modern, API-driven systems in a scalable resilient cloud-based platform * Experience with modern front-end frameworks and API integration (React, Vue, Angular)
        more
        NEW

        Solutions Architect

        Wilson Brown Limited
        EC1, City of London
        Up to £116,000 per annum + Bonus
        Client Solutions Architect - Salary: Up to £116K + Bonus - Location: London 2 days per week - Were hiring a Solutions Architect for a global leader in loyalty and customer engagement. This is a high-impact, client-facing role for someone who thrives at the intersection of strategy, software engineering, and stakeholder collaboration. Youll partner directly with enterprise clients to shape technical strategy, design scalable solutions, and build innovative integrations. Whether in pre-sales or delivery, your work will blend commercial impact with technical excellence. This isnt a hands-off role were looking for a hands-on Engineer turned Solutions Architect who still loves to code. Youll lead from the front, whether its building PoCs, architecting systems across modern stacks (TypeScript, AWS, Kubernetes), or aligning with internal engineering teams to deliver real cli
        Client Solutions Architect - Salary: Up to £116K + Bonus - Location: London 2 days per week - Were hiring a Solutions Architect for a global leader in loyalty and customer engagement. This is a high-impact, client-facing role for someone who thrives at the intersection of strategy, software engineering, and stakeholder collaboration. Youll partner directly with enterprise clients to shape technical strategy, design scalable solutions, and build innovative integrations. Whether in pre-sales or delivery, your work will blend commercial impact with technical excellence. This isnt a hands-off role were looking for a hands-on Engineer turned Solutions Architect who still loves to code. Youll lead from the front, whether its building PoCs, architecting systems across modern stacks (TypeScript, AWS, Kubernetes), or aligning with internal engineering teams to deliver real cli
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        Software Engineering Lead

        Dignity Funerals Limited
        Maidenhead Court, SL6 8LT
        Up to £110,000 per annum
        Contract: Full-Time, Permanent - Location: Maidenhead, Berkshire (Hybrid flexible, 3 days office) Salary: Up to £110,000 per annum - At Dignity and Farewill, we're redefining what end-of-life services can look and feel like - modern, compassionate, accessible. As we combine the scale and experience of Dignity with Farewill's tech-driven innovation, we're building a next-generation platform to support families at one of life's most important moments. We're looking for two Software Engineering Lead's to join our growing technology team and help drive this transformation. This is a hands-on technical leadership role, responsible for guiding one of our key product domains - whether that's Funeral Plans, Legal Services, or At-Need Funerals - from strategy through to scalable, secure software delivery. What you'll be doing
        Contract: Full-Time, Permanent - Location: Maidenhead, Berkshire (Hybrid flexible, 3 days office) Salary: Up to £110,000 per annum - At Dignity and Farewill, we're redefining what end-of-life services can look and feel like - modern, compassionate, accessible. As we combine the scale and experience of Dignity with Farewill's tech-driven innovation, we're building a next-generation platform to support families at one of life's most important moments. We're looking for two Software Engineering Lead's to join our growing technology team and help drive this transformation. This is a hands-on technical leadership role, responsible for guiding one of our key product domains - whether that's Funeral Plans, Legal Services, or At-Need Funerals - from strategy through to scalable, secure software delivery. What you'll be doing
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        FEATURED

        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 Software Developer

        Lean People Services Limited
        Luton, Bedfordshire
        From £75,000 to £85,000 per annum
        up to £85,000 per annum - Full Time Mon-Fri - Our Client provide remote diagnostic solutions and services to the automotive industry. They offer cutting-edge, expert diagnostics using both after-market and original equipment manufacturer tools to provide safe and accurate repairs. The company was founded in 2010 and is headquartered in Plano, TX with UK offices in Peterlee and Bedfordshire. As more automotive software technologies emerge, including autonomous driving, advanced diagnostics, vehicle connectivity, digital cockpits the Company aims to gain a first-mover advantage by developing software solutions with the help of automotive software engineers. If the idea of making an impact on a project lifecycle sounds appealing from its inception down to testing and deployment appeals to you, keep on reading!
        up to £85,000 per annum - Full Time Mon-Fri - Our Client provide remote diagnostic solutions and services to the automotive industry. They offer cutting-edge, expert diagnostics using both after-market and original equipment manufacturer tools to provide safe and accurate repairs. The company was founded in 2010 and is headquartered in Plano, TX with UK offices in Peterlee and Bedfordshire. As more automotive software technologies emerge, including autonomous driving, advanced diagnostics, vehicle connectivity, digital cockpits the Company aims to gain a first-mover advantage by developing software solutions with the help of automotive software engineers. If the idea of making an impact on a project lifecycle sounds appealing from its inception down to testing and deployment appeals to you, keep on reading!
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        Frequently Asked Questions

        How many permanent API jobs are there in Watford?
        There are 104 permanent API jobs within 20 miles of Watford available on CWJobs right now.

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