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        78

        12 Contract API jobs in Leeds + 20 miles

        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)
        more
        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

        Senior / Mid Level Software Developers

        James and James Fulfilment
        Leeds, West Yorkshire
        £50,000 - £70,000 a year
        Fresh off our merger into the QLS Group, J&J Global is now the largest independent ecommerce fulfilment provider in Europe. But were just getting started. Were looking for Senior and Mid-Level Developers to join a newly formed team focused on evolving our proprietary fulfilment platform. If youre looking to own your work and solve complex problems in real-time logistics - from intelligent inventory to seamless global returns - we want to hear from you. What youll be doing * You will develop, maintain and enhance the core components of our fulfilment software. * Developing and scaling the backend services and APIs that drive our order processing, inventory, and warehouse workflows * Building sleek, responsive UIs that help our internal operations teams and external partners move faster and smarter
        Fresh off our merger into the QLS Group, J&J Global is now the largest independent ecommerce fulfilment provider in Europe. But were just getting started. Were looking for Senior and Mid-Level Developers to join a newly formed team focused on evolving our proprietary fulfilment platform. If youre looking to own your work and solve complex problems in real-time logistics - from intelligent inventory to seamless global returns - we want to hear from you. What youll be doing * You will develop, maintain and enhance the core components of our fulfilment software. * Developing and scaling the backend services and APIs that drive our order processing, inventory, and warehouse workflows * Building sleek, responsive UIs that help our internal operations teams and external partners move faster and smarter
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        Senior Software Engineer

        Entain Holdings (Uk) Limited
        Leeds, West Yorkshire
        £75,000 - £90,000 a year
        Company Description - Angstrom is a proprietary sports pricing and product provider, building intricate, simulation driven pricing and risk systems to support the success of key sports brands across the Entain group. Founded in 2018 and having established itself as a pioneer in player-level, play-by-play simulations and forecasting, Angstrom was acquired by Entain in 2023. Today, we operate as a semi-autonomous division, responsible for delivering the groups most advanced pricing and risk capabilities with a focus on the US market. Were committed to building the next generation of sports betting products sports-first, recreationally-focused, and designed to make betting more engaging, more intelligent, and more fun. Were proud to be a high-performing, low-ego team where brilliant people work and people work to become brilliant.
        Company Description - Angstrom is a proprietary sports pricing and product provider, building intricate, simulation driven pricing and risk systems to support the success of key sports brands across the Entain group. Founded in 2018 and having established itself as a pioneer in player-level, play-by-play simulations and forecasting, Angstrom was acquired by Entain in 2023. Today, we operate as a semi-autonomous division, responsible for delivering the groups most advanced pricing and risk capabilities with a focus on the US market. Were committed to building the next generation of sports betting products sports-first, recreationally-focused, and designed to make betting more engaging, more intelligent, and more fun. Were proud to be a high-performing, low-ego team where brilliant people work and people work to become brilliant.
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        Your tribe - Were looking for an Associate Software Engineer to join our team on a 12-month fixed-term contract. The Sports Super Tribe is comprised of 5 self-sufficient tribes, encompassing over 60 squads of Engineers, QA, and associated roles across Porto, Dublin and Leeds. Together, we are dedicated to delivering fast, distinctive, dynamic, and trusted sports betting experiences, each tribe driven by a clear vision to develop best-in-class customer experiences. As part of this role, youll be working with the Reward and Free to Play tribe, aiming to deliver fast, innovative, and trusted experiences that enhance player enjoyment, provide valuable rewards, and engage our customers by elevating the sport - Your team - Youll join a supportive team that understands the Play and Reward technology and is focused on delivering high-quality products that create engaging customer ...
        Your tribe - Were looking for an Associate Software Engineer to join our team on a 12-month fixed-term contract. The Sports Super Tribe is comprised of 5 self-sufficient tribes, encompassing over 60 squads of Engineers, QA, and associated roles across Porto, Dublin and Leeds. Together, we are dedicated to delivering fast, distinctive, dynamic, and trusted sports betting experiences, each tribe driven by a clear vision to develop best-in-class customer experiences. As part of this role, youll be working with the Reward and Free to Play tribe, aiming to deliver fast, innovative, and trusted experiences that enhance player enjoyment, provide valuable rewards, and engage our customers by elevating the sport - Your team - Youll join a supportive team that understands the Play and Reward technology and is focused on delivering high-quality products that create engaging customer ...
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        Were looking for Oracle Fusion Financials Specialist to join our team in either Bradford on a permanent basis. This hybrid role offers flexibility, with expectations of spending two to three days in the office. We are looking a dynamic and highly skilled Oracle Fusion Financials Specialist with deep expertise across Core Finance Modules to join our Enterprise Systems Managed Services Team. You will bring strong business process knowledge along with the capability to lead, deliver and enhance application functionality in line with evolving business needs. This role requires someone confident working independently while providing clear updates to the Senior Finance and Projects Manager. * FIN Accounts Receivables, Cash Management, General Ledger, Fixed Assets, Sub-Ledger Accounting, Intercompany and Tax.
        Were looking for Oracle Fusion Financials Specialist to join our team in either Bradford on a permanent basis. This hybrid role offers flexibility, with expectations of spending two to three days in the office. We are looking a dynamic and highly skilled Oracle Fusion Financials Specialist with deep expertise across Core Finance Modules to join our Enterprise Systems Managed Services Team. You will bring strong business process knowledge along with the capability to lead, deliver and enhance application functionality in line with evolving business needs. This role requires someone confident working independently while providing clear updates to the Senior Finance and Projects Manager. * FIN Accounts Receivables, Cash Management, General Ledger, Fixed Assets, Sub-Ledger Accounting, Intercompany and Tax.
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        Experience with designing and leading testing for complex digital or data-driven systems, including multi-component architectures, API-integrated platforms, event-driven workflows and systems operating under regulatory or high-assurance constraints.
        Experience with designing and leading testing for complex digital or data-driven systems, including multi-component architectures, API-integrated platforms, event-driven workflows and systems operating under regulatory or high-assurance constraints.
        more

        66 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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        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
        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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        Full Stack Engineer (Java / ReactJS)

        Shillito Executive Search Ltd
        Sheffield (S1)
        £520.00 - £525.00 per day
        Adept Resourcing are recruiting on behalf of a Tier-one bank, on a ongoing KYC project, looking for Full Stack Engineers (Java / ReactJS) for an initial 6 month project (highly likely to renew). This is a hybrid role, with 3 days a week in the Sheffield office. Responsibilities * Hands-on development, delivering production-grade code aligned to a microservices-based architecture * Supporting system architecture and design in line with engineering best practices * Maintaining awareness of business, engineering, and non-functional requirements * Driving and contributing to a strong engineering culture across teams * Collaborating with global teams across multiple regions * Proactively identifying risks, removing impediments, and communicating issues to programme management * Identifying process inefficiencies and implementing innovative, programmatic improvements
        Adept Resourcing are recruiting on behalf of a Tier-one bank, on a ongoing KYC project, looking for Full Stack Engineers (Java / ReactJS) for an initial 6 month project (highly likely to renew). This is a hybrid role, with 3 days a week in the Sheffield office. Responsibilities * Hands-on development, delivering production-grade code aligned to a microservices-based architecture * Supporting system architecture and design in line with engineering best practices * Maintaining awareness of business, engineering, and non-functional requirements * Driving and contributing to a strong engineering culture across teams * Collaborating with global teams across multiple regions * Proactively identifying risks, removing impediments, and communicating issues to programme management * Identifying process inefficiencies and implementing innovative, programmatic improvements
        more
        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.
        more
        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
        more
        FEATURED

        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)
        more

        Data Platform Engineer

        Morson Edge
        Warton, Preston (PR4), PR4 1AX
        £64 - 74 per hour
        As a Data Platform Engineer in a highly regulated environment, you will be responsible for designing, building, and maintaining secure and scalable data infrastructure that supports both cloud and on premises platforms. You will play a key role in ensuring that all data systems comply with industry regulations and security standards while enabling efficient access for analytics and operational teams. A strong command of Apache NiFi is essential for this role. You will design, implement, and maintain data flows using NiFi, ensuring accurate, efficient, and secure data ingestion, transformation, and delivery. You should be adept at identifying and resolving issues within NiFi flows, managing performance bottlenecks, and implementing robust error handling strategies. You’ll work closely with cross-functional teams including data architects, compliance officers, and ...
        As a Data Platform Engineer in a highly regulated environment, you will be responsible for designing, building, and maintaining secure and scalable data infrastructure that supports both cloud and on premises platforms. You will play a key role in ensuring that all data systems comply with industry regulations and security standards while enabling efficient access for analytics and operational teams. A strong command of Apache NiFi is essential for this role. You will design, implement, and maintain data flows using NiFi, ensuring accurate, efficient, and secure data ingestion, transformation, and delivery. You should be adept at identifying and resolving issues within NiFi flows, managing performance bottlenecks, and implementing robust error handling strategies. You’ll work closely with cross-functional teams including data architects, compliance officers, and ...
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        PREMIUM
        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.
        more

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        What is the average salary for API in Leeds?

        Average salary per year
        £47,499

        The average salary for a API in Leeds is £47,499. API in Leeds salaries range from £37,499 to £57,499.

        Frequently Asked Questions

        How many contract API jobs are there in Leeds?
        There are 12 contract API jobs within 20 miles of Leeds available on CWJobs right now.

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