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        41 Contract API jobs in Barnsley + 20 miles

        MS Dynamics 365 Developer

        Infoplus Technologies UK Ltd
        Leeds (LS10)
        From £350 to £400 per day
        Implement complex integrations using Azure services (Logic Apps, Functions, Service Bus, API Management).
        Implement complex integrations using Azure services (Logic Apps, Functions, Service Bus, API Management).
        more
        Experience with Node.js, API integration, and JavaScript testing frameworks (Jest, Jasmine).
        Experience with Node.js, API integration, and JavaScript testing frameworks (Jest, Jasmine).
        PREMIUM

        Software Developer

        Oscar Associates (UK) Limited
        Leeds (LS1)
        £40000 - £50000 per annum
        Cloud: AWS (Lambda, API Gateway) * Architecture: API-led, highly integrated systems * Exposure to AWS services (Lambda, API Gateway, etc.)
        Cloud: AWS (Lambda, API Gateway) * Architecture: API-led, highly integrated systems * Exposure to AWS services (Lambda, API Gateway, etc.)
        more
        Become part of a mission-driven team building secure, resilient platforms that safeguard the nation's financial system. The Bank of England, in partnership with Inspire People, is seeking a Lead Solution Architect with strong regulatory data-collection expertise, Azure cloud capability and experience delivering complex data-centric platforms to help deliver BEEDS 2.0 (Bank of England Electronic Data Submission portal). Based in Leeds on a 21-month FTC with a competitve salary plus an 8% cash benefits allowance, discretionary annual bonus and a non-contributory pension. Shape the Future of Technology at the UK's Central Bank - The Bank of England plays a vital role in maintaining the nation's monetary and financial stability. BEEDS (the Bank of England Electronic Data Submission portal) is the secure online system that manages regulatory data submissions from banks, insurers ...
        Become part of a mission-driven team building secure, resilient platforms that safeguard the nation's financial system. The Bank of England, in partnership with Inspire People, is seeking a Lead Solution Architect with strong regulatory data-collection expertise, Azure cloud capability and experience delivering complex data-centric platforms to help deliver BEEDS 2.0 (Bank of England Electronic Data Submission portal). Based in Leeds on a 21-month FTC with a competitve salary plus an 8% cash benefits allowance, discretionary annual bonus and a non-contributory pension. Shape the Future of Technology at the UK's Central Bank - The Bank of England plays a vital role in maintaining the nation's monetary and financial stability. BEEDS (the Bank of England Electronic Data Submission portal) is the secure online system that manages regulatory data submissions from banks, insurers ...
        more
        Supporting the implementation of API-first and event-driven architectures where appropriate. * Experience working with Azure cloud services such as App Services, Azure Functions, Azure SQL, API Management, Service Bus and Key Vault.
        Supporting the implementation of API-first and event-driven architectures where appropriate. * Experience working with Azure cloud services such as App Services, Azure Functions, Azure SQL, API Management, Service Bus and Key Vault.
        more
        PREMIUM

        Shopify Tech Lead - Leeds

        Searchability (UK) Ltd
        Leeds (LS1), LS1
        £45000 - £55000 per annum + Flexible working
        Shopify Tech Lead - Up to £55,000 - We're working with an established digital agency looking for an experienced Shopify Tech Lead to lead complex ecommerce builds for a range of household name clients. This role is ideal for someone from an agency background who enjoys variety, fast-moving projects, and taking ownership of Shopify delivery from discovery through to launch. You'll remain hands-on while acting as the technical lead across multiple projects, setting standards and mentoring developers along the way. You'll work closely with Project Managers, designers, QA, and stakeholders, helping to translate client requirements into robust, high-performing Shopify solutions. * Leading the technical delivery of Shopify projects in an agency environment * Architecting and building custom Shopify themes and solutions * Acting as the Shopify technical authority across projects
        Shopify Tech Lead - Up to £55,000 - We're working with an established digital agency looking for an experienced Shopify Tech Lead to lead complex ecommerce builds for a range of household name clients. This role is ideal for someone from an agency background who enjoys variety, fast-moving projects, and taking ownership of Shopify delivery from discovery through to launch. You'll remain hands-on while acting as the technical lead across multiple projects, setting standards and mentoring developers along the way. You'll work closely with Project Managers, designers, QA, and stakeholders, helping to translate client requirements into robust, high-performing Shopify solutions. * Leading the technical delivery of Shopify projects in an agency environment * Architecting and building custom Shopify themes and solutions * Acting as the Shopify technical authority across projects
        more

        Senior Java Developer

        RECOPS (LEEDS) LIMITED
        Leeds (LS1)
        Up to £67,000 per annum
        A growing digital consultancy is looking for experienced Java Developers to join multidisciplinary teams delivering large-scale digital platforms used by thousands of users across the UK. Youll be working in agile teams alongside engineers, designers and product specialists to build modern, user-focused services. The work involves designing, building and improving cloud-based applications that support critical digital services. This is a hands-on engineering role with a strong focus on clean code, collaboration and delivering high-quality software in fast-moving environments. What youll be doing * Building and maintaining Java-based backend services using modern frameworks * Designing scalable APIs and microservices used by high-traffic digital platforms * Working in agile delivery teams alongside product managers, designers and other engineers
        A growing digital consultancy is looking for experienced Java Developers to join multidisciplinary teams delivering large-scale digital platforms used by thousands of users across the UK. Youll be working in agile teams alongside engineers, designers and product specialists to build modern, user-focused services. The work involves designing, building and improving cloud-based applications that support critical digital services. This is a hands-on engineering role with a strong focus on clean code, collaboration and delivering high-quality software in fast-moving environments. What youll be doing * Building and maintaining Java-based backend services using modern frameworks * Designing scalable APIs and microservices used by high-traffic digital platforms * Working in agile delivery teams alongside product managers, designers and other engineers
        more

        Lead DevOps Engineer

        DWP Digital
        Upperthorpe, Sheffield (S3), S3 7UF
        £75026 - £92522 per annum
        Pay up to £92,522 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. We're looking for someone who has the vision to lead multiple teams through the adoption of cutting-edge infrastructure and development technologies. 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.
        Pay up to £92,522 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. We're looking for someone who has the vision to lead multiple teams through the adoption of cutting-edge infrastructure and development technologies. 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.
        more

        Lead DevOps Engineer

        DWP Digital
        Leeds (LS9), LS2 7UA
        £75026 - £92522 per annum
        Pay up to £92,522 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. We're looking for someone who has the vision to lead multiple teams through the adoption of cutting-edge infrastructure and development technologies. 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.
        Pay up to £92,522 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. We're looking for someone who has the vision to lead multiple teams through the adoption of cutting-edge infrastructure and development technologies. 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.
        more

        Business Analyst

        Vallum Associates Limited
        Sheffield (S1)
        £450 per day
        We are looking for a proactive and collaborative Business Analyst to join the DevX Standards and Controls product team. The ideal candidate will be a self-starter who can work closely with business stakeholders, developers, and product owners to understand problems, define solutions, and support the delivery of high-quality systems and applications. Key Responsibilities * Engage with stakeholders to understand customer needs and business challenges. * Work with developers and technical leads to define and deliver effective solutions. * Translate business ideas into clear functional requirements, user stories, and acceptance criteria. * Document system processes, business workflows, and functional specifications. * Create process flows, flowcharts, and data flow diagrams to support solution design. * Support testing activities by defining and validating requirements.
        We are looking for a proactive and collaborative Business Analyst to join the DevX Standards and Controls product team. The ideal candidate will be a self-starter who can work closely with business stakeholders, developers, and product owners to understand problems, define solutions, and support the delivery of high-quality systems and applications. Key Responsibilities * Engage with stakeholders to understand customer needs and business challenges. * Work with developers and technical leads to define and deliver effective solutions. * Translate business ideas into clear functional requirements, user stories, and acceptance criteria. * Document system processes, business workflows, and functional specifications. * Create process flows, flowcharts, and data flow diagrams to support solution design. * Support testing activities by defining and validating requirements.
        more
        Job Title: Customer Enablement Specialist - Location: Leeds (Office Based) £40,000 - £60,000 per annum - An exciting opportunity has arisen with a well-funded, rapidly growing SaaS and AI technology business that delivers an innovative platform designed to streamline customer communication, automate workflows and improve operational efficiency. This Customer Solutions Consultant role is ideal for a technically minded, customer-focused professional who enjoys problem-solving, supporting clients and helping businesses maximise the value of cutting-edge software solutions. Customer Solutions Advisor Responsibilities * Design structured onboarding programmes aligned to implementation timelines * Deliver high-quality live and recorded training sessions for customers * Build and maintain a scalable training academy, including videos, guides, and certification programmes
        Job Title: Customer Enablement Specialist - Location: Leeds (Office Based) £40,000 - £60,000 per annum - An exciting opportunity has arisen with a well-funded, rapidly growing SaaS and AI technology business that delivers an innovative platform designed to streamline customer communication, automate workflows and improve operational efficiency. This Customer Solutions Consultant role is ideal for a technically minded, customer-focused professional who enjoys problem-solving, supporting clients and helping businesses maximise the value of cutting-edge software solutions. Customer Solutions Advisor Responsibilities * Design structured onboarding programmes aligned to implementation timelines * Deliver high-quality live and recorded training sessions for customers * Build and maintain a scalable training academy, including videos, guides, and certification programmes
        more

        Lead Full Stack Developer

        Oscar Associates (UK) Limited
        Leeds (LS1)
        £60000 - £75000 per annum
        I'm currently partnered with a global software provider delivering data-driven, high-performance web applications. They're looking for a Lead Web Developer to take ownership of a major front-end modernisation project and help guide the next phase of their product development. This is an exciting opportunity for an experienced developer who thrives in a technical leadership role - someone who enjoys setting architectural direction, mentoring engineers, and remaining hands-on with code. * Lead the design and development of full stack web applications using React and TypeScript on the front end, and Java/Spring on the back end. * Drive a key front-end migration project to deliver a cleaner, faster, and more scalable user experience. * Define and uphold best engineering practices, performing code reviews and ensuring high-quality, maintainable code.
        I'm currently partnered with a global software provider delivering data-driven, high-performance web applications. They're looking for a Lead Web Developer to take ownership of a major front-end modernisation project and help guide the next phase of their product development. This is an exciting opportunity for an experienced developer who thrives in a technical leadership role - someone who enjoys setting architectural direction, mentoring engineers, and remaining hands-on with code. * Lead the design and development of full stack web applications using React and TypeScript on the front end, and Java/Spring on the back end. * Drive a key front-end migration project to deliver a cleaner, faster, and more scalable user experience. * Define and uphold best engineering practices, performing code reviews and ensuring high-quality, maintainable code.
        more
        We are seeking an IT Business Analyst to support our ERP transformation programme. You will act as the bridge between business teams and implementation partners, ensuring clear requirements, smooth delivery, and adoption of new systems and processes. Key Responsibilities * Act as the single point of truth between business and IT teams. * Gather, document, and prioritise functional and non-functional requirements. * Map current vs future processes and identify improvements. * Translate requirements into clear user stories, test scenarios, and UAT scripts. * Support data migration, integrations, and quality assurance. * Produce SOPs, training materials, and support change adoption. Success Measures * Clear process maps and documented requirements framework. * Fit-gap analysis with minimal customisation. * Successful UAT cycles with defects triaged and closed.
        We are seeking an IT Business Analyst to support our ERP transformation programme. You will act as the bridge between business teams and implementation partners, ensuring clear requirements, smooth delivery, and adoption of new systems and processes. Key Responsibilities * Act as the single point of truth between business and IT teams. * Gather, document, and prioritise functional and non-functional requirements. * Map current vs future processes and identify improvements. * Translate requirements into clear user stories, test scenarios, and UAT scripts. * Support data migration, integrations, and quality assurance. * Produce SOPs, training materials, and support change adoption. Success Measures * Clear process maps and documented requirements framework. * Fit-gap analysis with minimal customisation. * Successful UAT cycles with defects triaged and closed.
        more
        FEATURED
        Contract: 12 months - Inside IR35 - Location: Hybrid - Leeds / Newcastle / Birmingham (Approx. 60% onsite; must be commutable within ~90 minutes) Role Purpose - We are seeking a Senior Technical Business Analyst with recent, hands-on experience work-ing directly with software development teams to help shape and deliver shared technical capa-bilities and enablers across DWP Digital. This is a highly technical BA role. You will operate at SFIA Level 5 (Ensure & Advise), working alongside engineers, architects, DevOps and platform teams to turn loosely defined technical epics into delivery ready user stories. This is not a task taking role. The successful candidate will bring structure to ambiguity, challenge constructively, and actively shape technical solutions. Essential Skills & Experience - Candidates must clearly evidence the following. Applications that do not will not progress. 1.
        Contract: 12 months - Inside IR35 - Location: Hybrid - Leeds / Newcastle / Birmingham (Approx. 60% onsite; must be commutable within ~90 minutes) Role Purpose - We are seeking a Senior Technical Business Analyst with recent, hands-on experience work-ing directly with software development teams to help shape and deliver shared technical capa-bilities and enablers across DWP Digital. This is a highly technical BA role. You will operate at SFIA Level 5 (Ensure & Advise), working alongside engineers, architects, DevOps and platform teams to turn loosely defined technical epics into delivery ready user stories. This is not a task taking role. The successful candidate will bring structure to ambiguity, challenge constructively, and actively shape technical solutions. Essential Skills & Experience - Candidates must clearly evidence the following. Applications that do not will not progress. 1.
        more

        Data Engineer

        Tilt Recruitment Limited
        Leeds (LS1)
        Up to £46,000 per annum
        Remote (UK) | 12 days per month in the South Manchester area. Up to £46,000 + flexibility for standout candidates - If youre a Data Engineer who wants more than just maintaining pipelines, this is a chance to shape something from the ground up. This role sits at the heart of a business investing heavily in its data capability. Theyre moving away from reactive reporting towards a modern, insight-led platform and they need someone who wants to be part of that journey, not just observe it. The Opportunity - Youll join at a pivotal moment. The current data platform is being rebuilt, transitioning from legacy and mixed approaches into a modern, cloud-first architecture built on Azure Synapse and a medallion (bronzesilvergold) design. This isnt a keep the lights on role. * Designing and building scalable data pipelines from scratch
        Remote (UK) | 12 days per month in the South Manchester area. Up to £46,000 + flexibility for standout candidates - If youre a Data Engineer who wants more than just maintaining pipelines, this is a chance to shape something from the ground up. This role sits at the heart of a business investing heavily in its data capability. Theyre moving away from reactive reporting towards a modern, insight-led platform and they need someone who wants to be part of that journey, not just observe it. The Opportunity - Youll join at a pivotal moment. The current data platform is being rebuilt, transitioning from legacy and mixed approaches into a modern, cloud-first architecture built on Azure Synapse and a medallion (bronzesilvergold) design. This isnt a keep the lights on role. * Designing and building scalable data pipelines from scratch
        more
        FEATURED
        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
        more
        FEATURED

        Software Developer

        Get Recruited (UK) Ltd
        Barnsley, South Yorkshire, BBTE
        £38000.00 - £42000.00 per annum
        UP TO £42,000 + BENEFITS - You'll be joining as an experienced developer, working on live systems, handling sensitive data, maintaining reliable workflows, and making sure the software does what users need it to do without getting in the way. This isn't a role where you just pick up tickets and move on. You'll be expected to think about how the system hangs together, improve existing code, and help keep things stable as changes are made. * Building and maintaining PHP applications used in production. * Adding and improving JavaScript functionality to support straightforward user journeys. * Designing and maintaining MariaDB databases, with attention to performance and data accuracy. * Making sure applications are secure, reliable and auditable. * Investigating and fixing issues in live environments with minimal disruption.
        UP TO £42,000 + BENEFITS - You'll be joining as an experienced developer, working on live systems, handling sensitive data, maintaining reliable workflows, and making sure the software does what users need it to do without getting in the way. This isn't a role where you just pick up tickets and move on. You'll be expected to think about how the system hangs together, improve existing code, and help keep things stable as changes are made. * Building and maintaining PHP applications used in production. * Adding and improving JavaScript functionality to support straightforward user journeys. * Designing and maintaining MariaDB databases, with attention to performance and data accuracy. * Making sure applications are secure, reliable and auditable. * Investigating and fixing issues in live environments with minimal disruption.
        more
        FEATURED
        This role presents an exciting opportunity for a Senior API Developer to play a critical part in the development and support of the Bank of Englands Real Time Gross Settlement (RTGS) service a piece of UK critical national infrastructure that settles on average £800bn per day. You are a dedicated API engineer within an Agile environment and meet the minimum criteria. * Demonstrable hands-on experience on API Gateway at an enterprise scale (e.g., Apigee) * Proficient in API documentation tools (e.g., Swagger/Open API) * Experience with Performance tuning, including optimising API latency and fine-tuning Spring Boot performance (JVM tuning, connection pooling)
        This role presents an exciting opportunity for a Senior API Developer to play a critical part in the development and support of the Bank of Englands Real Time Gross Settlement (RTGS) service a piece of UK critical national infrastructure that settles on average £800bn per day. You are a dedicated API engineer within an Agile environment and meet the minimum criteria. * Demonstrable hands-on experience on API Gateway at an enterprise scale (e.g., Apigee) * Proficient in API documentation tools (e.g., Swagger/Open API) * Experience with Performance tuning, including optimising API latency and fine-tuning Spring Boot performance (JVM tuning, connection pooling)
        more

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        Frequently Asked Questions

        How many contract API jobs are there in Barnsley?
        There are 41 contract API jobs within 20 miles of Barnsley available on CWJobs right now.

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