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        29 Contract API jobs in Mansfield + 20 miles

        Enterprise Architect Contractor

        Rebel Recruitment
        Nottingham (NG1)
        From £600 to £850 per day
        API and event-driven architectures
        API and event-driven architectures
        Build and maintain an automated test framework and suites for API, event, and graph-based services (Python/PyTest). Perform API automation, contract testing, and replay/reprocessing scenarios.
        Build and maintain an automated test framework and suites for API, event, and graph-based services (Python/PyTest). Perform API automation, contract testing, and replay/reprocessing scenarios.
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        Senior Full-Stack AI Engineer

        Stealth IT Consulting Limited
        Sheffield (S1)
        £500 per day inside IR35
        Contract Details * Location: Sheffield 3 days onsite per week (mandatory) Grosvenor House, 1 Wellington St, Sheffield City Centre, Sheffield S1 4NB * Contract Duration: Until 30/11/2026 * Rate:£500 per day * IR35 Status:Inside IR35 - Role Overview - We are seeking a Senior Full-Stack AI Engineer to build an end-to-end AI-powered helpdesk product, spanning web applications, backend APIs, agent orchestration, and enterprise workflow automation. The successful contractor will work across the full product lifecycle, delivering scalable and secure AI-enabled support solutions for enterprise users. Key Responsibilities * Design and develop user-facing applications for employees, support agents, and administrators. o Chat interfaces - o Ticket submission - o Status tracking - o Escalation workflows - o Password resets - o Account unlocks - o Software access requests - o Knowledge-based troubleshooting
        Contract Details * Location: Sheffield 3 days onsite per week (mandatory) Grosvenor House, 1 Wellington St, Sheffield City Centre, Sheffield S1 4NB * Contract Duration: Until 30/11/2026 * Rate:£500 per day * IR35 Status:Inside IR35 - Role Overview - We are seeking a Senior Full-Stack AI Engineer to build an end-to-end AI-powered helpdesk product, spanning web applications, backend APIs, agent orchestration, and enterprise workflow automation. The successful contractor will work across the full product lifecycle, delivering scalable and secure AI-enabled support solutions for enterprise users. Key Responsibilities * Design and develop user-facing applications for employees, support agents, and administrators. o Chat interfaces - o Ticket submission - o Status tracking - o Escalation workflows - o Password resets - o Account unlocks - o Software access requests - o Knowledge-based troubleshooting
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        FEATURED

        Head of IT

        Brellis Recruitment
        Mansfield, Nottinghamshire, NG19
        £50k - 60k per year
        Engage confidently with third-party software developers, portal and API suppliers, and automation vendors — pushing back where needed
        Engage confidently with third-party software developers, portal and API suppliers, and automation vendors — pushing back where needed
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        Our client based in Sheffield is seeking an experienced Lead Software Developer to join their growing engineering team. This is an excellent opportunity for a senior technologist who combines hands-on software development expertise with strong technical leadership skills. Working within a modern cloud-first environment, you will lead the design, development, and evolution of business-critical applications and services built on Microsoft technologies. You will play a key role in shaping technical direction, driving engineering best practices, mentoring developers, and ensuring the successful delivery of high-quality software solutions. Key Responsibilities * Lead the design, development, and delivery of scalable backend services using C# and the latest .NET technologies (.NET 8, ASP.NET Core) * Define and influence software architecture, technical standards, and development ...
        Our client based in Sheffield is seeking an experienced Lead Software Developer to join their growing engineering team. This is an excellent opportunity for a senior technologist who combines hands-on software development expertise with strong technical leadership skills. Working within a modern cloud-first environment, you will lead the design, development, and evolution of business-critical applications and services built on Microsoft technologies. You will play a key role in shaping technical direction, driving engineering best practices, mentoring developers, and ensuring the successful delivery of high-quality software solutions. Key Responsibilities * Lead the design, development, and delivery of scalable backend services using C# and the latest .NET technologies (.NET 8, ASP.NET Core) * Define and influence software architecture, technical standards, and development ...
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        FEATURED

        Business Analyst

        Rebel Recruitment
        Nottingham (NG5), NG5 1DJ
        10% Bonus + 10% Pension
        Role: Business Analyst - Location: Hybrid role with 2 days in the Nottingham office - Working Arrangement: Hybrid - 2 days in the office - Salary: £36k to £55k - Hybrid working: 2 days a week in Nottingham | 35-hour week | 10% bonus | 10% employer pension contribution - We’re working with a growing software business that is looking for a Business Analyst to join their development team. This role would suit a BA who has worked in a software, digital or product-led environment, ideally with experience across e-commerce, shipping, logistics, order fulfilment, warehouse management or marketplace platforms. We would also welcome candidates from a Product Owner or Product Manager background, providing they have experience in one of the above areas and are comfortable working closely with software development teams.
        Role: Business Analyst - Location: Hybrid role with 2 days in the Nottingham office - Working Arrangement: Hybrid - 2 days in the office - Salary: £36k to £55k - Hybrid working: 2 days a week in Nottingham | 35-hour week | 10% bonus | 10% employer pension contribution - We’re working with a growing software business that is looking for a Business Analyst to join their development team. This role would suit a BA who has worked in a software, digital or product-led environment, ideally with experience across e-commerce, shipping, logistics, order fulfilment, warehouse management or marketplace platforms. We would also welcome candidates from a Product Owner or Product Manager background, providing they have experience in one of the above areas and are comfortable working closely with software development teams.
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        NEW

        Contract Java Full Stack Developer

        Spectrum It Recruitment Limited
        Nottingham (NG1)
        £375.00 - £400.00 per day
        Rate: £375-£400 per day - IR35: Inside IR35 - Duration: 6 months - Location: Fully remote working - An exciting opportunity has arisen for an experienced contract Java Full Stack Developer to join a large-scale digital transformation programme focused on modernising and enhancing a complex enterprise platform. The contract Java Full Stack Developer will work within an agile development team, you'll contribute to the ongoing support and evolution of a business-critical application suite while helping to shape the next generation SaaS solutions. This is an excellent opportunity for someone who enjoys working on challenging technical problems, modern architectures, and platform transformation. Key Responsibilities * Design, develop and maintain scalable full stack applications. * Build and enhance RESTful APIs and web-based services.
        Rate: £375-£400 per day - IR35: Inside IR35 - Duration: 6 months - Location: Fully remote working - An exciting opportunity has arisen for an experienced contract Java Full Stack Developer to join a large-scale digital transformation programme focused on modernising and enhancing a complex enterprise platform. The contract Java Full Stack Developer will work within an agile development team, you'll contribute to the ongoing support and evolution of a business-critical application suite while helping to shape the next generation SaaS solutions. This is an excellent opportunity for someone who enjoys working on challenging technical problems, modern architectures, and platform transformation. Key Responsibilities * Design, develop and maintain scalable full stack applications. * Build and enhance RESTful APIs and web-based services.
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        Senior Pega DevOps Engineer

        DWP Digital
        Upperthorpe, Sheffield (S3), S3 7UF
        £57948 - £80664 per annum
        Senior DevOps Engineer - Pay up to £80,664 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. This is a real and significant DevOps leadership role in the UK's largest government department. Here you will have the freedom and autonomy to drive the development of our technical landscape and define what DevOps looks like in DWP - Digital with Purpose. You'll be a leading, expert voice in a DWP Digital community that is driving a once-in-a-generation transformation of public services. We have a unique purpose, putting better, more efficient services in the hands of DWP users. * We have 1bn lines of code in over 12,000 code repos and 90+ programming languages. * We run around 294 days' worth of testing every day through automation. * Our APIs receive 173 million requests, and we spin up 280,000 AWS servers every month.
        Senior DevOps Engineer - Pay up to £80,664 plus 28.97% employer pension contributions, hybrid working, flexible hours, and great work life balance. This is a real and significant DevOps leadership role in the UK's largest government department. Here you will have the freedom and autonomy to drive the development of our technical landscape and define what DevOps looks like in DWP - Digital with Purpose. You'll be a leading, expert voice in a DWP Digital community that is driving a once-in-a-generation transformation of public services. We have a unique purpose, putting better, more efficient services in the hands of DWP users. * We have 1bn lines of code in over 12,000 code repos and 90+ programming languages. * We run around 294 days' worth of testing every day through automation. * Our APIs receive 173 million requests, and we spin up 280,000 AWS servers every month.
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        Systems Support Analyst

        Searchability (UK) Ltd
        Nottingham (NG1), NG1
        £26000 - £27000 per annum
        £25,000 - £27,000 per annum (DOE) * Nottingham city centre location * SQL, reporting, data analysis and systems support focused role * Excellent opportunity for a graduate or junior analyst looking to develop their career * Full training provided, including SQL data management * To apply, please email - We're working with an established software solutions provider. They deliver end-to-end management information systems, including hosting, implementation, support, maintenance and development, helping organisations make data-driven decisions and deliver vital community services. Due to continued growth, they are looking to recruit a Systems Support to join their Nottingham-based team. - Profit-sharing bonus scheme - Healthcare plan - Pension scheme - Ongoing training and career development - Exposure to SQL, APIs, reporting and business systems
        £25,000 - £27,000 per annum (DOE) * Nottingham city centre location * SQL, reporting, data analysis and systems support focused role * Excellent opportunity for a graduate or junior analyst looking to develop their career * Full training provided, including SQL data management * To apply, please email - We're working with an established software solutions provider. They deliver end-to-end management information systems, including hosting, implementation, support, maintenance and development, helping organisations make data-driven decisions and deliver vital community services. Due to continued growth, they are looking to recruit a Systems Support to join their Nottingham-based team. - Profit-sharing bonus scheme - Healthcare plan - Pension scheme - Ongoing training and career development - Exposure to SQL, APIs, reporting and business systems
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        Full Stack Developer

        Oscar Associates (UK) Limited
        Nottingham (NG1)
        £45000 - £55000 per annum
        The Role - An established and innovative technology company specialising in the logistics industry are looking for an experienced Full Stack Developer to further enhance their core platform and digital solutions. You will play a key role in designing, developing and maintaining scalable web applications across both backend and frontend systems. Working closely with other developers, product owners and stakeholders, you'll contribute to architectural decisions while remaining heavily hands-on across the full stack. This is an opportunity to take ownership of major features and projects, influence development standards, and mentor more junior developers, all within a collaborative and forward-thinking technical environment. Requirements * Strong commercial experience with C# .NET (Core) * Solid frontend development skills using Angular
        The Role - An established and innovative technology company specialising in the logistics industry are looking for an experienced Full Stack Developer to further enhance their core platform and digital solutions. You will play a key role in designing, developing and maintaining scalable web applications across both backend and frontend systems. Working closely with other developers, product owners and stakeholders, you'll contribute to architectural decisions while remaining heavily hands-on across the full stack. This is an opportunity to take ownership of major features and projects, influence development standards, and mentor more junior developers, all within a collaborative and forward-thinking technical environment. Requirements * Strong commercial experience with C# .NET (Core) * Solid frontend development skills using Angular
        more
        Our client based in Sheffield is looking for a skilled C# .NET Developer to join a small, collaborative engineering team working on modern cloud-based applications. This is a hands-on development role where you will contribute across the full software lifecycle, including maintenance, enhancements, and the delivery of new features. You will be working with modern Microsoft technologies in a cloud-first environment, helping to build and evolve scalable backend services and APIs that support business-critical systems. Key Responsibilities * Design, develop, and maintain high-quality backend services using C# and the latest .NET technologies (.NET 8, ASP.NET Core) * Build and enhance RESTful APIs to support internal and external applications * Work with Azure cloud services including App Services, Azure Functions, and storage solutions
        Our client based in Sheffield is looking for a skilled C# .NET Developer to join a small, collaborative engineering team working on modern cloud-based applications. This is a hands-on development role where you will contribute across the full software lifecycle, including maintenance, enhancements, and the delivery of new features. You will be working with modern Microsoft technologies in a cloud-first environment, helping to build and evolve scalable backend services and APIs that support business-critical systems. Key Responsibilities * Design, develop, and maintain high-quality backend services using C# and the latest .NET technologies (.NET 8, ASP.NET Core) * Build and enhance RESTful APIs to support internal and external applications * Work with Azure cloud services including App Services, Azure Functions, and storage solutions
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        FEATURED

        Full Stack Developer

        Oscar Associates (UK) Limited
        Nottingham (NG1)
        £45000 - £55000 per annum
        The Role - An established and innovative technology company specialising in the logistics industry are looking for an experienced Full Stack Developer to further enhance their core platform and digital solutions. You will play a key role in designing, developing and maintaining scalable web applications across both backend and frontend systems. Working closely with other developers, product owners and stakeholders, you'll contribute to architectural decisions while remaining heavily hands-on across the full stack. This is an opportunity to take ownership of major features and projects, influence development standards, and mentor more junior developers, all within a collaborative and forward-thinking technical environment. Requirements * Strong commercial experience with C# .NET (Core) * Solid frontend development skills using Angular
        The Role - An established and innovative technology company specialising in the logistics industry are looking for an experienced Full Stack Developer to further enhance their core platform and digital solutions. You will play a key role in designing, developing and maintaining scalable web applications across both backend and frontend systems. Working closely with other developers, product owners and stakeholders, you'll contribute to architectural decisions while remaining heavily hands-on across the full stack. This is an opportunity to take ownership of major features and projects, influence development standards, and mentor more junior developers, all within a collaborative and forward-thinking technical environment. Requirements * Strong commercial experience with C# .NET (Core) * Solid frontend development skills using Angular
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        Experience with cloud services, API design, database architecture, big data tools and frameworks * Cloud services experience with AWS strongly preferred (EC2, ECS, Lambda, API Gateway, S3, DynamoDB, RDS) * API and service design: REST,gRPC,GraphQL; versioning and backward compatibility at scale
        Experience with cloud services, API design, database architecture, big data tools and frameworks * Cloud services experience with AWS strongly preferred (EC2, ECS, Lambda, API Gateway, S3, DynamoDB, RDS) * API and service design: REST,gRPC,GraphQL; versioning and backward compatibility at scale
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        Work in a cross-functional engineering team to design, enable and develop software features that support the UK API Gateway * Bonus: experience with procedural languages (e.g. Lua/Go) and/or writing API plugins
        Work in a cross-functional engineering team to design, enable and develop software features that support the UK API Gateway * Bonus: experience with procedural languages (e.g. Lua/Go) and/or writing API plugins
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        Passionate about API testing utilising tools similar to Wiremock, Pact, Postman and Cucumber. * Good understanding of API authentication and authorisation mechanisms like OAuth.
        Passionate about API testing utilising tools similar to Wiremock, Pact, Postman and Cucumber. * Good understanding of API authentication and authorisation mechanisms like OAuth.
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        Principal Cloud Engineer

        Commify UK Limited
        Nottingham, Nottinghamshire
        £75,000 - £82,500 a year
        Service Mesh: Hands-on with Istio (ambient mode preferred) or Cilium for mTLS, traffic management, Gateway API, and zero-trust networking.
        Service Mesh: Hands-on with Istio (ambient mode preferred) or Cilium for mTLS, traffic management, Gateway API, and zero-trust networking.
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        Nottingham Trent House (95002), United Kingdom, Nottingham, Nottinghamshire - About this role - Capital Ones mission is to change banking for good by bringing humanity, ingenuity and simplicity to banking. As a Lead Senior Engineer you will be contributing to the development of our applications and solutions that support our software and infrastructure delivery teams within Capital One. Our Engineers are people who lead by example, build strong and valuable relationships and have the confidence to influence at all levels. We are proud of who we are and what we do and want you to join us at this particularly exciting time at Capital One. You will be working with focused delivery teams whilst partnering with colleagues across our entire business to enable and enhance the ability for our teams to deliver solutions at pace. What youll do
        Nottingham Trent House (95002), United Kingdom, Nottingham, Nottinghamshire - About this role - Capital Ones mission is to change banking for good by bringing humanity, ingenuity and simplicity to banking. As a Lead Senior Engineer you will be contributing to the development of our applications and solutions that support our software and infrastructure delivery teams within Capital One. Our Engineers are people who lead by example, build strong and valuable relationships and have the confidence to influence at all levels. We are proud of who we are and what we do and want you to join us at this particularly exciting time at Capital One. You will be working with focused delivery teams whilst partnering with colleagues across our entire business to enable and enhance the ability for our teams to deliver solutions at pace. What youll do
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        About Ensek - Ensek builds the cloud-native SaaS software thats transforming how energy retailers operate, innovate and manage at scale. We help retailers lower operating costs, improve billing accuracy for consumers, and enhance customer experience through automation and AI-driven insight, all underpinned by modern, cloud-native architecture. Ensek is at an exciting inflection point as we scale at pace towards new international horizons. If youre driven by solving complex, real-world problems and want to build modern technology that accelerates the global energy transition, youll feel right at home with us. About the role - The Senior Product Manager for Energy Products & Quoting leads the strategy and delivery for a product within ENSEK's Energy Orchestration System: how energy products are modelled, managed, priced, and quoted.
        About Ensek - Ensek builds the cloud-native SaaS software thats transforming how energy retailers operate, innovate and manage at scale. We help retailers lower operating costs, improve billing accuracy for consumers, and enhance customer experience through automation and AI-driven insight, all underpinned by modern, cloud-native architecture. Ensek is at an exciting inflection point as we scale at pace towards new international horizons. If youre driven by solving complex, real-world problems and want to build modern technology that accelerates the global energy transition, youll feel right at home with us. About the role - The Senior Product Manager for Energy Products & Quoting leads the strategy and delivery for a product within ENSEK's Energy Orchestration System: how energy products are modelled, managed, priced, and quoted.
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        How many contract API jobs are there in Mansfield?
        There are 29 contract API jobs within 20 miles of Mansfield available on CWJobs right now.

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