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        31 Permanent API jobs in Windsor + 20 miles

        275 exact matches jobs are outside your preferred location

        Full Stack Web Developer

        Oscar Associates (UK) Limited
        UK
        £35000 - £45000 per annum
        Ful Stack Web Developer | £35,000 - £45,000 | Remote-first | Lancashire HQ (2-3 days onsite per year) I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They're looking for a Web Software Developer to join a collaborative internal engineering team responsible for building and improving these systems. This role offers the opportunity to work on business-critical applications used across the organisation, contributing to the development of modern web-based platforms while learning from experienced engineers in the team. The environment places a strong emphasis on clean code, structured development practices, and quality-focused ...
        Ful Stack Web Developer | £35,000 - £45,000 | Remote-first | Lancashire HQ (2-3 days onsite per year) I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They're looking for a Web Software Developer to join a collaborative internal engineering team responsible for building and improving these systems. This role offers the opportunity to work on business-critical applications used across the organisation, contributing to the development of modern web-based platforms while learning from experienced engineers in the team. The environment places a strong emphasis on clean code, structured development practices, and quality-focused ...
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        Full Stack Web Developer

        Oscar Associates (UK) Limited
        UK
        £45000 - £55000 per annum
        I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They are looking for a Senior Web Software Developer to join a small, collaborative internal engineering team responsible for designing and building these systems from the ground up. This role offers the opportunity to work on business-critical applications used across the organisation, helping shape the architecture and development standards as the company transitions to a modern web-based platform. The team places a strong emphasis on clean code, structured development practices, and quality-first engineering, and they are looking for someone who enjoys solving real-world ...
        I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They are looking for a Senior Web Software Developer to join a small, collaborative internal engineering team responsible for designing and building these systems from the ground up. This role offers the opportunity to work on business-critical applications used across the organisation, helping shape the architecture and development standards as the company transitions to a modern web-based platform. The team places a strong emphasis on clean code, structured development practices, and quality-first engineering, and they are looking for someone who enjoys solving real-world ...
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        Contribute to architecture within team scope (API boundaries, data models, messaging patterns, failure handling). * Solid understanding of API design (versioning, idempotency), request/response lifecycles, and integration patterns (REST/JSON, async messaging). * Familiarity with microservice and event-driven architectures (service boundaries, API gateways, asynchronous workflows).
        Contribute to architecture within team scope (API boundaries, data models, messaging patterns, failure handling). * Solid understanding of API design (versioning, idempotency), request/response lifecycles, and integration patterns (REST/JSON, async messaging). * Familiarity with microservice and event-driven architectures (service boundaries, API gateways, asynchronous workflows).
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        Role Details * Role/Job Title: GIS Developer * Work Location: Wokingham (Onsite) * Duration of Assignment: 6 months - Role Summary - We are looking for a skilled Web GIS Developer to design, develop, and maintain GIS-based web applications and services. The candidate will work closely with project teams to build spatial solutions using ESRI technologies, integrate GIS components with enterprise systems, and support geospatial data management and visualization needs. This role requires strong hands on experience in GIS development, spatial databases, web technologies, and ArcGIS Enterprise components. Key Responsibilities * Develop and maintain GIS-based web applications using ESRI technologies. * Build and configure applications using ArcGIS Enterprise components such as ArcGIS Portal, ArcGIS Server, and Data Store.
        Role Details * Role/Job Title: GIS Developer * Work Location: Wokingham (Onsite) * Duration of Assignment: 6 months - Role Summary - We are looking for a skilled Web GIS Developer to design, develop, and maintain GIS-based web applications and services. The candidate will work closely with project teams to build spatial solutions using ESRI technologies, integrate GIS components with enterprise systems, and support geospatial data management and visualization needs. This role requires strong hands on experience in GIS development, spatial databases, web technologies, and ArcGIS Enterprise components. Key Responsibilities * Develop and maintain GIS-based web applications using ESRI technologies. * Build and configure applications using ArcGIS Enterprise components such as ArcGIS Portal, ArcGIS Server, and Data Store.
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        We are working with a well established engineering group seeking a Senior Fullstack Developer to support the continued development of their core operational and customer facing systems. This is a hands-on, delivery-focused role, where you will be actively building, improving and maintaining live systems used across the business. The role would suit a senior developer who enjoys staying close to the code, while supporting and mentoring a junior developer. You will contribute directly to customer portals, APIs and IoT integrations while contributing to technical decisions and supporting development best practice within the team. Key Duties and Responsibilities * Design, develop and deploy scalable web applications across frontend and backend environments using modern frameworks and cloud platforms.
        We are working with a well established engineering group seeking a Senior Fullstack Developer to support the continued development of their core operational and customer facing systems. This is a hands-on, delivery-focused role, where you will be actively building, improving and maintaining live systems used across the business. The role would suit a senior developer who enjoys staying close to the code, while supporting and mentoring a junior developer. You will contribute directly to customer portals, APIs and IoT integrations while contributing to technical decisions and supporting development best practice within the team. Key Duties and Responsibilities * Design, develop and deploy scalable web applications across frontend and backend environments using modern frameworks and cloud platforms.
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        Senior Fullstack Software Engineer UK Remote - Are you ready to put your technical expertise to work in transforming services that directly improve lives across the UK? Our client provides emergency accommodation and vital support for some of the countrys most vulnerable people including survivors of domestic abuse, refugees, and individuals seeking asylum. Their mission is to create safe environments and deliver innovative solutions that protect and empower those most in need. They are now looking for a Senior Software Engineerto take a key role in rebuilding and modernising their software landscape. This is a unique opportunity to shape critical systems that underpin essential frontline services. Whats on Offer * Fully remote within the UK * Salary up to £80,000 * 33 days annual leave * Pension & healthcare * A role with genuine social impact
        Senior Fullstack Software Engineer UK Remote - Are you ready to put your technical expertise to work in transforming services that directly improve lives across the UK? Our client provides emergency accommodation and vital support for some of the countrys most vulnerable people including survivors of domestic abuse, refugees, and individuals seeking asylum. Their mission is to create safe environments and deliver innovative solutions that protect and empower those most in need. They are now looking for a Senior Software Engineerto take a key role in rebuilding and modernising their software landscape. This is a unique opportunity to shape critical systems that underpin essential frontline services. Whats on Offer * Fully remote within the UK * Salary up to £80,000 * 33 days annual leave * Pension & healthcare * A role with genuine social impact
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        Our mission is to transform the way you shop and eat, bringing the neighbourhood to your door by connecting consumers, restaurants, shops and riders. We are transforming the way the world eats and shops by making access to food and products more convenient and enjoyable. We give people the opportunity to buy what they want, as they want it, when and where they want it. We are a technology-driven company at the forefront of the most rapidly expanding industry in the world. We are still a small team, making a very large impact, looking to answer some of the most interesting questions out there. We move fast, value autonomy and ownership, and we are always looking for new ideas. As a Senior Enterprise Systems Engineer you will lead various projects, own a variety of technology solutions, and manage and improve the systems and tools that our employees use daily.
        Our mission is to transform the way you shop and eat, bringing the neighbourhood to your door by connecting consumers, restaurants, shops and riders. We are transforming the way the world eats and shops by making access to food and products more convenient and enjoyable. We give people the opportunity to buy what they want, as they want it, when and where they want it. We are a technology-driven company at the forefront of the most rapidly expanding industry in the world. We are still a small team, making a very large impact, looking to answer some of the most interesting questions out there. We move fast, value autonomy and ownership, and we are always looking for new ideas. As a Senior Enterprise Systems Engineer you will lead various projects, own a variety of technology solutions, and manage and improve the systems and tools that our employees use daily.
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        For two decades, NVIDIA has pioneered visual computing, the art and science of computer graphics. With our invention of the GPU - the engine of modern visual computing - the field has expanded to encompass PC games, movie production, product design, medical diagnosis, scientific research and all things AI. Today, AI and visual computing are becoming increasingly central to how people interact with technology, and there has never been a more exciting time to join our team. We are now looking for a Principal Developer Technology Engineer to focus on advanced rendering, including path tracing and neural graphics, and the broader adoption of AI technology in games. * Collaborate with some of the most innovative, leading AAA developers throughout the world to optimize GPU and system performance, to ensure the fastest and most fluid gameplay with beautiful path traced neural ...
        For two decades, NVIDIA has pioneered visual computing, the art and science of computer graphics. With our invention of the GPU - the engine of modern visual computing - the field has expanded to encompass PC games, movie production, product design, medical diagnosis, scientific research and all things AI. Today, AI and visual computing are becoming increasingly central to how people interact with technology, and there has never been a more exciting time to join our team. We are now looking for a Principal Developer Technology Engineer to focus on advanced rendering, including path tracing and neural graphics, and the broader adoption of AI technology in games. * Collaborate with some of the most innovative, leading AAA developers throughout the world to optimize GPU and system performance, to ensure the fastest and most fluid gameplay with beautiful path traced neural ...
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        Senior Microsoft Dynamics 365 Business Central Developer £70-75k + Benefits | Remote UK, Spain or Portugal - Do you enjoy owning the technical delivery of complex ERP solutions and working directly with clients to shape how systems support real business operations. You would play a key role in delivering end to end Microsoft Dynamics 365 Business Central software solutions across a varied client base, ranging from SMEs through to large multinational organisations. This is a position where technical depth matters, but so does the ability to engage with stakeholders, translate business requirements, and guide projects through design, build and implementation. You will take ownership of solution design and development, ensuring high quality delivery while setting strong technical standards across the team.
        Senior Microsoft Dynamics 365 Business Central Developer £70-75k + Benefits | Remote UK, Spain or Portugal - Do you enjoy owning the technical delivery of complex ERP solutions and working directly with clients to shape how systems support real business operations. You would play a key role in delivering end to end Microsoft Dynamics 365 Business Central software solutions across a varied client base, ranging from SMEs through to large multinational organisations. This is a position where technical depth matters, but so does the ability to engage with stakeholders, translate business requirements, and guide projects through design, build and implementation. You will take ownership of solution design and development, ensuring high quality delivery while setting strong technical standards across the team.
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        FEATURED

        Data Analyst (Remote)

        Marstep Resourcing Solutions
        UK
        Up to £28,500 per annum Plus Quarterly Profit Share + Benefits + Caree
        This is a great opportunity to join a long established and growing business where you will have the opportunity to develop a worthwhile career and be rewarded with good benefits and profit share. Salary From £25k to £28.5k - depending upon experience plus profit share of around 15% per annum and an opportunity to develop a long career. You may have some or all of the skills/requirements below, but training can be provided in areas and you will have the chance to learn skills you are not currently familiar with. Location:(Fully Remote) About Us - Data has the power to transform businesses, and we thrive on unlocking its full potential. We're looking for a data analyst who wants to take the next step up and join our growing team, offering a £25,000-£28,500 salary and the flexibility of a fully remote role.
        This is a great opportunity to join a long established and growing business where you will have the opportunity to develop a worthwhile career and be rewarded with good benefits and profit share. Salary From £25k to £28.5k - depending upon experience plus profit share of around 15% per annum and an opportunity to develop a long career. You may have some or all of the skills/requirements below, but training can be provided in areas and you will have the chance to learn skills you are not currently familiar with. Location:(Fully Remote) About Us - Data has the power to transform businesses, and we thrive on unlocking its full potential. We're looking for a data analyst who wants to take the next step up and join our growing team, offering a £25,000-£28,500 salary and the flexibility of a fully remote role.
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        FEATURED

        Integration Developer (AWS, Typescript, Node.js)

        Robert Half Limited
        UK
        £50000 - £60000 per annum + + remote working + enhanced holiday
        Deep working knowledge of relevant AWS services; primarily Lambda, API Gateway, SNS/SQS, S3, DynamoDB, IAM and CloudWatch. * Hands-on experience with Azure services, including Resource Groups, Service Bus, Azure Logic Apps, Function Apps, API Management.
        Deep working knowledge of relevant AWS services; primarily Lambda, API Gateway, SNS/SQS, S3, DynamoDB, IAM and CloudWatch. * Hands-on experience with Azure services, including Resource Groups, Service Bus, Azure Logic Apps, Function Apps, API Management.
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        Location: Alderley Park, Cheshire (Hybrid/Flexible) About Venn - We are a fast-scaling SaaS business transforming how recruitment agencies and employer brands attract talent. Our powers high-performance websites for over 200 global clients. As we scale, we need a hands-on Senior .Net Developer to scale our platform roadmap, ensuring our clients receive best in class recruitment and careers websites. About the Role - We are seeking a Senior .NET Web Developer / Senior Backend Engineer (Lead) who excels in designing high-performance backend systems while championing clean, maintainable, and high-quality code. In this role, youll go beyond implementationyou will shape the technical direction of our backend ecosystem, ensuring every solution is scalable, secure, and built with precision. If youre a C# expert with a passion for SQL excellence, a meticulous eye for detail, and a ...
        Location: Alderley Park, Cheshire (Hybrid/Flexible) About Venn - We are a fast-scaling SaaS business transforming how recruitment agencies and employer brands attract talent. Our powers high-performance websites for over 200 global clients. As we scale, we need a hands-on Senior .Net Developer to scale our platform roadmap, ensuring our clients receive best in class recruitment and careers websites. About the Role - We are seeking a Senior .NET Web Developer / Senior Backend Engineer (Lead) who excels in designing high-performance backend systems while championing clean, maintainable, and high-quality code. In this role, youll go beyond implementationyou will shape the technical direction of our backend ecosystem, ensuring every solution is scalable, secure, and built with precision. If youre a C# expert with a passion for SQL excellence, a meticulous eye for detail, and a ...
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        Job Description - Position Details - IT Services - Location: University of Birmingham, Edgbaston, Birmingham UK - Full time starting salary is normally in the range £57,422 to £66,537 with potential progression once in post to £86,760 - Grade: 9 - Full Time, Permanent - Our offer to you - People are at the heart of what we are and do. The University of Birmingham is proud to have been a part of the City of Birmingham and the wider region for over 100 years, and we are equally proud to be recognised as a leading global university. We want to attract talented people from across the city and beyond, support them to succeed, and celebrate their success. We are committed to helping the people who work here to develop through our sector-leading Birmingham Professional programme which provides all professional services staff with development opportunities and the encouragement to reach their full ...
        Job Description - Position Details - IT Services - Location: University of Birmingham, Edgbaston, Birmingham UK - Full time starting salary is normally in the range £57,422 to £66,537 with potential progression once in post to £86,760 - Grade: 9 - Full Time, Permanent - Our offer to you - People are at the heart of what we are and do. The University of Birmingham is proud to have been a part of the City of Birmingham and the wider region for over 100 years, and we are equally proud to be recognised as a leading global university. We want to attract talented people from across the city and beyond, support them to succeed, and celebrate their success. We are committed to helping the people who work here to develop through our sector-leading Birmingham Professional programme which provides all professional services staff with development opportunities and the encouragement to reach their full ...
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        Job Title: Software Developer (.NET / SQL) - Junior / Mid-Level Location: Hull, UK (Hybrid / Office) Salary: £26,660 - £32,000 per annum Job type: Full-time, Permanent Reality Solutions is a leading regional IT Solutions Provider and Sage Accredited Business Partner based in Hull. We are looking for a Software Developer with experience in VB.NET and/or C#.NET to join our development team. You will work on internal and client-facing business systems, contributing to both ongoing product development and new feature delivery. About the role This role suits a developer with solid foundations in .NET and SQL who is comfortable working across backend logic, database interaction, and supporting user-facing applications. You will be involved in maintaining existing systems while also helping modernise parts of the platform over time.
        Job Title: Software Developer (.NET / SQL) - Junior / Mid-Level Location: Hull, UK (Hybrid / Office) Salary: £26,660 - £32,000 per annum Job type: Full-time, Permanent Reality Solutions is a leading regional IT Solutions Provider and Sage Accredited Business Partner based in Hull. We are looking for a Software Developer with experience in VB.NET and/or C#.NET to join our development team. You will work on internal and client-facing business systems, contributing to both ongoing product development and new feature delivery. About the role This role suits a developer with solid foundations in .NET and SQL who is comfortable working across backend logic, database interaction, and supporting user-facing applications. You will be involved in maintaining existing systems while also helping modernise parts of the platform over time.
        more
        Were a national law firm with a local reach. Our legal experts are here for you. Whether its personal or business, we understand that everyones situation is different. But were more than just a law firm were a team of people working together to help individuals and businesses navigate lifes ups and downs. Working here youll feel a part of our friendly and inclusive environment. Well value you for who you are and what you bring. We support each other and push boundaries to achieve incredible things and make a real difference to our clients and communities. We're always looking to support our colleagues to work in a way that works best for them and everyone else, including our clients, the business and the regulators. Please speak to a member of our Recruitment and Onboarding team for more information. Your Role and What You'll Be Doing - Role Overview
        Were a national law firm with a local reach. Our legal experts are here for you. Whether its personal or business, we understand that everyones situation is different. But were more than just a law firm were a team of people working together to help individuals and businesses navigate lifes ups and downs. Working here youll feel a part of our friendly and inclusive environment. Well value you for who you are and what you bring. We support each other and push boundaries to achieve incredible things and make a real difference to our clients and communities. We're always looking to support our colleagues to work in a way that works best for them and everyone else, including our clients, the business and the regulators. Please speak to a member of our Recruitment and Onboarding team for more information. Your Role and What You'll Be Doing - Role Overview
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        IAM Senior Engineer

        BRITISH UNITED PROVIDENT ASSOCIATION LIMITED(THE)
        South East
        78200
        Staines - Full time - 2026-03-16 - Posted Today - R1216187 - London or Staines - Permanent - From: £78.2k DOE + 10% bonus + fantastic benefits - Full time: 37.5 hours per week, including weekend/ out of hours rota** We consider all types of flexibility, including locations, hours and working patterns. At Bupa, we're passionate about technology. With colleagues, customers, patients and residents in mind you'll have the opportunity to work on innovative projects and make a real impact on their lives. Right from the start you'll become part of our digital strategy, joining us on our journey and developing yourself along the way. As Identity and Access Management (IAM) Senior Engineer you will be working across Bupa Global, India and UK Market Unit. You will be responsible for the end-to-end of IAM design, development, testing, implementation, integration and maintenance of IAM systems and solutions ...
        Staines - Full time - 2026-03-16 - Posted Today - R1216187 - London or Staines - Permanent - From: £78.2k DOE + 10% bonus + fantastic benefits - Full time: 37.5 hours per week, including weekend/ out of hours rota** We consider all types of flexibility, including locations, hours and working patterns. At Bupa, we're passionate about technology. With colleagues, customers, patients and residents in mind you'll have the opportunity to work on innovative projects and make a real impact on their lives. Right from the start you'll become part of our digital strategy, joining us on our journey and developing yourself along the way. As Identity and Access Management (IAM) Senior Engineer you will be working across Bupa Global, India and UK Market Unit. You will be responsible for the end-to-end of IAM design, development, testing, implementation, integration and maintenance of IAM systems and solutions ...
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        Apply now - Date: 13 Mar 2026 - Location: London region, GB - 81357 - Power System & Product Development Engineer - This Power System & Product Development Engineer will report to the Network Access Manager and will work within DSO directorate based in our London office. You will be a permanent employee. You will attract a salary of £80,574.00 and a bonus of 3%. This role can also offer blended working after probationary period (6 months) - 3 days in the office and 2 remote - Close Date: 26/03/2026 - We also provide the following additional benefits * 25 Days Annual Leave plus bank holidays. * Reservist Leave - Additional 18 days full pay and 22 unpaid * Personal Pension Plan - Personal contribution rates of 4% or 5% (UK Power Networks will make a corresponding contribution of 8% or 10%) * Tenancy Loan Deposit Scheme, Season Ticket Loan
        Apply now - Date: 13 Mar 2026 - Location: London region, GB - 81357 - Power System & Product Development Engineer - This Power System & Product Development Engineer will report to the Network Access Manager and will work within DSO directorate based in our London office. You will be a permanent employee. You will attract a salary of £80,574.00 and a bonus of 3%. This role can also offer blended working after probationary period (6 months) - 3 days in the office and 2 remote - Close Date: 26/03/2026 - We also provide the following additional benefits * 25 Days Annual Leave plus bank holidays. * Reservist Leave - Additional 18 days full pay and 22 unpaid * Personal Pension Plan - Personal contribution rates of 4% or 5% (UK Power Networks will make a corresponding contribution of 8% or 10%) * Tenancy Loan Deposit Scheme, Season Ticket Loan
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        Frequently Asked Questions

        How many permanent API jobs are there in Windsor?
        There are 31 permanent API jobs within 20 miles of Windsor available on CWJobs right now.

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