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        Contract
        68

        1 Contract API job in Doncaster + 20 miles

        Card Solutions Architects - Contract role - Sheffield - Immediate

        StrategicsIQ Ltd
        Sheffield (S1)
        Unspecified
        Promote adoption of modern engineering practices including microservices, API-first design, and domain-driven design * Channels: Experience designing across web, mobile, API gateways, and backend orchestration layers
        Promote adoption of modern engineering practices including microservices, API-first design, and domain-driven design * Channels: Experience designing across web, mobile, API gateways, and backend orchestration layers
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        FEATURED

        67 exact matches jobs are outside your preferred location

        Role Title: API Security Architect "We are looking for an API Security Architect to define, design, and oversee the implementation of enterprise-grade API security architecture. * Design end-to-end API security architecture across cloud and on-premise environments. * Define API security standards covering authentication, authorization, encryption, and threat protection. * Lead architectural reviews, threat modelling, and risk assessments for API integrations. * Select, architect, and optimize API gateways, WAFs, and security controls. * Provide security governance for API development, lifecycle management, and CI/CD practices. * Oversee remediation strategies for API vulnerabilities and guide architecture improvements. * Proven experience in API security architecture within large-scale environments. * Expertise in API gateways (Apigee, Azure API Management, Kong, Mulesoft).
        Role Title: API Security Architect "We are looking for an API Security Architect to define, design, and oversee the implementation of enterprise-grade API security architecture. * Design end-to-end API security architecture across cloud and on-premise environments. * Define API security standards covering authentication, authorization, encryption, and threat protection. * Lead architectural reviews, threat modelling, and risk assessments for API integrations. * Select, architect, and optimize API gateways, WAFs, and security controls. * Provide security governance for API development, lifecycle management, and CI/CD practices. * Oversee remediation strategies for API vulnerabilities and guide architecture improvements. * Proven experience in API security architecture within large-scale environments. * Expertise in API gateways (Apigee, Azure API Management, Kong, Mulesoft).
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        A consultancy we are working with are looking for a Senior .NET Developer to support and enhance a suite of business critical applications. This is a backend-focused role, and the successful candidate must be able to take ownership quickly and deliver impact from day one. Key Responsibilities * Develop and maintain complex backend systems using C# / .NET Core * Design and support RESTful APIs and microservices * Build and maintain CI/CD pipelines (Azure DevOps, YAML, Terraform) * Deliver integration and data migration solutions - Essential Skills * 10+ years' C# / .NET Core (backend-heavy systems) * Strong Azure experience (Functions, Web Apps, DevOps, CI/CD) * REST APIs and microservices architecture * Experience with complex, data-driven or integration-heavy environments - Desirable * RabbitMQ or Azure Service Bus * React or Angular * ETL / data integration
        A consultancy we are working with are looking for a Senior .NET Developer to support and enhance a suite of business critical applications. This is a backend-focused role, and the successful candidate must be able to take ownership quickly and deliver impact from day one. Key Responsibilities * Develop and maintain complex backend systems using C# / .NET Core * Design and support RESTful APIs and microservices * Build and maintain CI/CD pipelines (Azure DevOps, YAML, Terraform) * Deliver integration and data migration solutions - Essential Skills * 10+ years' C# / .NET Core (backend-heavy systems) * Strong Azure experience (Functions, Web Apps, DevOps, CI/CD) * REST APIs and microservices architecture * Experience with complex, data-driven or integration-heavy environments - Desirable * RabbitMQ or Azure Service Bus * React or Angular * ETL / data integration
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        Job Title: Implementation Specialist E-Invoicing - Location: London- 1 day - Job Type: 6 months- Inside IR35 - Role overview - Are you looking for a role that will use your problem-solving skills, technical interests, and client communication skills to their full potential? We are seeking Implementation Specialists to join our e-invoicing Professional Services team and lead the technical implementation of our e-invoicing platform with global clients. This is the perfect role for a well-organised, collaborative, and analytical person who wants to grow their career within the software implementation space and work with a varied portfolio of multinational clients. You'll use your technical aptitude, excellent communication skills, and problem-solving abilities to tackle client configuration challenges and ensure the highest level of service.
        Job Title: Implementation Specialist E-Invoicing - Location: London- 1 day - Job Type: 6 months- Inside IR35 - Role overview - Are you looking for a role that will use your problem-solving skills, technical interests, and client communication skills to their full potential? We are seeking Implementation Specialists to join our e-invoicing Professional Services team and lead the technical implementation of our e-invoicing platform with global clients. This is the perfect role for a well-organised, collaborative, and analytical person who wants to grow their career within the software implementation space and work with a varied portfolio of multinational clients. You'll use your technical aptitude, excellent communication skills, and problem-solving abilities to tackle client configuration challenges and ensure the highest level of service.
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        Derbyshire | Hybrid - c£75,000 - Fixed Term Contract | for 6 months - 3 days a week - Part time - This is a hands-on consultancy role sitting at the intersection of IT and business operations, working closely with Finance, Sales, Operations and Account Management to make sure these systems are configured, stable, and embedded for the long term. * Administer and optimise NetSuite across modules including SA, GL, AR, AP, FAM, CRM, WMS, Projects and more * Conduct structured process reviews with business teams and translate requirements into system design and configuration * Build and maintain dashboards, saved searches, and reports that drive genuine business insight * Support ETL activities and oversee integrations with internal and third-party platforms * Deliver targeted training and documentation to upskill internal teams for long-term ownership
        Derbyshire | Hybrid - c£75,000 - Fixed Term Contract | for 6 months - 3 days a week - Part time - This is a hands-on consultancy role sitting at the intersection of IT and business operations, working closely with Finance, Sales, Operations and Account Management to make sure these systems are configured, stable, and embedded for the long term. * Administer and optimise NetSuite across modules including SA, GL, AR, AP, FAM, CRM, WMS, Projects and more * Conduct structured process reviews with business teams and translate requirements into system design and configuration * Build and maintain dashboards, saved searches, and reports that drive genuine business insight * Support ETL activities and oversee integrations with internal and third-party platforms * Deliver targeted training and documentation to upskill internal teams for long-term ownership
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        FEATURED

        Starburst Developer

        Stackstudio Digital Ltd.
        Leeds, West Yorkshire
        From £450 to £500 per day
        Role/Job title: Starburst Developer - Work Location: London (2 days in a week MUFG Client Office) The Role - Design and maintain data pipelines using Starburst and related technologies. Optimize query performance and resolve data processing bottlenecks. Manage databases to ensure high availability, reliability and security. Integrate Starburst with various data sources including cloud services and APIs. Monitor data pipelines and troubleshoot issues proactively. Collaborate with business users and stakeholders on data requirements. Maintain comprehensive and up-to-date documentation for data processes. Stay current with data engineering advancements and propose innovative solutions. Implement best practices for data quality assurance and testing. Your Profile - Essential skills/knowledge/experience: (Up to 10, Avoid repetition)
        Role/Job title: Starburst Developer - Work Location: London (2 days in a week MUFG Client Office) The Role - Design and maintain data pipelines using Starburst and related technologies. Optimize query performance and resolve data processing bottlenecks. Manage databases to ensure high availability, reliability and security. Integrate Starburst with various data sources including cloud services and APIs. Monitor data pipelines and troubleshoot issues proactively. Collaborate with business users and stakeholders on data requirements. Maintain comprehensive and up-to-date documentation for data processes. Stay current with data engineering advancements and propose innovative solutions. Implement best practices for data quality assurance and testing. Your Profile - Essential skills/knowledge/experience: (Up to 10, Avoid repetition)
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        Starburst Developer

        Stackstudio Digital Ltd.
        Manchester, Greater Manchester
        From £450 to £500 per day
        Role/Job title: Starburst Developer - Work Location: London (2 days in a week MUFG Client Office) The Role - Design and maintain data pipelines using Starburst and related technologies. Optimize query performance and resolve data processing bottlenecks. Manage databases to ensure high availability, reliability and security. Integrate Starburst with various data sources including cloud services and APIs. Monitor data pipelines and troubleshoot issues proactively. Collaborate with business users and stakeholders on data requirements. Maintain comprehensive and up-to-date documentation for data processes. Stay current with data engineering advancements and propose innovative solutions. Implement best practices for data quality assurance and testing. Your Profile - Essential skills/knowledge/experience: (Up to 10, Avoid repetition)
        Role/Job title: Starburst Developer - Work Location: London (2 days in a week MUFG Client Office) The Role - Design and maintain data pipelines using Starburst and related technologies. Optimize query performance and resolve data processing bottlenecks. Manage databases to ensure high availability, reliability and security. Integrate Starburst with various data sources including cloud services and APIs. Monitor data pipelines and troubleshoot issues proactively. Collaborate with business users and stakeholders on data requirements. Maintain comprehensive and up-to-date documentation for data processes. Stay current with data engineering advancements and propose innovative solutions. Implement best practices for data quality assurance and testing. Your Profile - Essential skills/knowledge/experience: (Up to 10, Avoid repetition)
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        Location: Leeds (Hybrid 3 days onsite) Contract: 3 Months (Immediate Start) Rate: Competitive (Market Rates) The Opportunity - We are working with a leading global technology consultancy to recruit an AI Product Developer for a high-impact engagement within the financial services sector. This is an excellent opportunity to work on cutting-edge AI solutions, designing and delivering Copilot and LLM-powered products within a rapidly evolving AI Foundry environment. You will play a key role in shaping scalable, secure, and enterprise-grade AI capabilities. What Youll Be Doing - Designing and building Copilot solutions, intelligent agents, and LLM workflows - Developing scalable AI components including RAG pipelines, embeddings, and vector search - Integrating AI solutions into enterprise systems, APIs, and cloud platforms
        Location: Leeds (Hybrid 3 days onsite) Contract: 3 Months (Immediate Start) Rate: Competitive (Market Rates) The Opportunity - We are working with a leading global technology consultancy to recruit an AI Product Developer for a high-impact engagement within the financial services sector. This is an excellent opportunity to work on cutting-edge AI solutions, designing and delivering Copilot and LLM-powered products within a rapidly evolving AI Foundry environment. You will play a key role in shaping scalable, secure, and enterprise-grade AI capabilities. What Youll Be Doing - Designing and building Copilot solutions, intelligent agents, and LLM workflows - Developing scalable AI components including RAG pipelines, embeddings, and vector search - Integrating AI solutions into enterprise systems, APIs, and cloud platforms
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        FEATURED
        Preferred - Experience of building distributed scalable microservices using Java/Kotlin, Spring Boot, OAuth 2.0, Secure API design * Understanding of API design for mobile application with event driven architecture * Other technologies/areas: AWS, API Design, Automation testing
        Preferred - Experience of building distributed scalable microservices using Java/Kotlin, Spring Boot, OAuth 2.0, Secure API design * Understanding of API design for mobile application with event driven architecture * Other technologies/areas: AWS, API Design, Automation testing
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        Expect to tackle complex challenges involving deep API validation, mobile performance strategy, and seamless CI/CD integration to protect our core mobile and backend ecosystem. The Role This role is the quality guardian of our mobile and API ecosystem. * API Testing: Postman / Newman * API Mastery: Deep API validation and contract testing.
        Expect to tackle complex challenges involving deep API validation, mobile performance strategy, and seamless CI/CD integration to protect our core mobile and backend ecosystem. The Role This role is the quality guardian of our mobile and API ecosystem. * API Testing: Postman / Newman * API Mastery: Deep API validation and contract testing.
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        Senior QA Engineer

        Vix Technology Ltd
        Manchester, Greater Manchester
        Competitive
        Proven expertise designing and implementing automated testing frameworks across functional, API, integration and regression testing.
        Proven expertise designing and implementing automated testing frameworks across functional, API, integration and regression testing.
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        Lead Software Developer

        AMBER LABS LIMITED
        Manchester, Greater Manchester
        Competitive
        Hybrid Working Manchester based (1 day/week in office) * 12 Months FTC - The Company - At Amber Labs, we are a cutting-edge UK technology consultancy that empowers autonomy, promotes experimentation, and enables rapid learning to deliver exceptional value to our clients. Collaboration is at the heart of everything we do, with our cross-functional consultants, engineers, and analysts working together to shorten delivery times, minimise risk, and drive impactful results for high-profile government and commercial programmes. About the Role - We are seeking an experienced Lead Software Developer to support a major UK public sector body, leading the design and development of scalable, secure, and efficient backend services. You will champion engineering excellence, guide technical decision-making, and mentor a multidisciplinary team while ensuring solutions align with government ...
        Hybrid Working Manchester based (1 day/week in office) * 12 Months FTC - The Company - At Amber Labs, we are a cutting-edge UK technology consultancy that empowers autonomy, promotes experimentation, and enables rapid learning to deliver exceptional value to our clients. Collaboration is at the heart of everything we do, with our cross-functional consultants, engineers, and analysts working together to shorten delivery times, minimise risk, and drive impactful results for high-profile government and commercial programmes. About the Role - We are seeking an experienced Lead Software Developer to support a major UK public sector body, leading the design and development of scalable, secure, and efficient backend services. You will champion engineering excellence, guide technical decision-making, and mentor a multidisciplinary team while ensuring solutions align with government ...
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        Lead Graphics Programmer

        Cloud Imperium Games Limited
        Manchester, Greater Manchester
        Competitive
        You will also advance the core rendering technology that aspires to achieve photo-real visuals, such as physically based light, eye and lens simulations, as well as more low-level engine technologies such as shader building & compilation, content streaming systems, and the multi-threaded and cross-API renderer architecture.
        You will also advance the core rendering technology that aspires to achieve photo-real visuals, such as physically based light, eye and lens simulations, as well as more low-level engine technologies such as shader building & compilation, content streaming systems, and the multi-threaded and cross-API renderer architecture.
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        Lead Games - Server Programmer

        Electronic Arts Limited
        Manchester, Greater Manchester
        Competitive
        General Information Locations : Manchester, Cheshire, United Kingdom - Role ID 210658 Worker Type Regular Employee Studio/Department EA Mobile - Playdemic Work Model Hybrid Description & Requirements Electronic Arts creates next-level entertainment experiences that inspire players and fans around the world. Here, everyone is part of the story. Part of a community that connects across the globe. A place where creativity thrives, new perspectives are invited, and ideas matter. A team where everyone makes play happen. Just 13 miles south of Manchester and a 15-minute train journey, is the attractive market town of Wilmslow. Here amongst the boutique shops and independent cafes and bars is the stunning Playdemic studio. Acquired by EA in 2021, Playdemic is home to the top 10 grossing, BAFTA-winning mobile smash Golf Clash.
        General Information Locations : Manchester, Cheshire, United Kingdom - Role ID 210658 Worker Type Regular Employee Studio/Department EA Mobile - Playdemic Work Model Hybrid Description & Requirements Electronic Arts creates next-level entertainment experiences that inspire players and fans around the world. Here, everyone is part of the story. Part of a community that connects across the globe. A place where creativity thrives, new perspectives are invited, and ideas matter. A team where everyone makes play happen. Just 13 miles south of Manchester and a 15-minute train journey, is the attractive market town of Wilmslow. Here amongst the boutique shops and independent cafes and bars is the stunning Playdemic studio. Acquired by EA in 2021, Playdemic is home to the top 10 grossing, BAFTA-winning mobile smash Golf Clash.
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        Frequently Asked Questions

        How many contract API jobs are there in Doncaster?
        There are 1 contract API jobs within 20 miles of Doncaster available on CWJobs right now.

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