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        2 Contract API jobs in Barnsley + 20 miles

        Senior Java Developer

        Invitise Ltd
        LS11, Leeds
        Up to £700 per day
        Were looking for a Senior Java Developer for our public sector client based in Leeds on an initial 12-month contract paying up to £700 per day Inside IR35. This role allows hybrid working with an expectation to attend the office 3 days per week. You will need to either hold current BPSS clearance or have the ability to pass it, and be eligible for SC clearance. The successful Senior Java Developer will possess proven skills working with the following * Java 21 (or later) * Test Driven Development (TDD) and Behaviour Driven Development (BDD) * Large microservice architectures * Agile environments and pair programming * Implementing APIs for internal and external use * Building automated test suites in CI/CD environments * Unix/Linux operating systems * Communicating technical concepts to non-technical audiences * Jackson, JAX-RS, Mockito * ActiveMQ or Kafka
        Were looking for a Senior Java Developer for our public sector client based in Leeds on an initial 12-month contract paying up to £700 per day Inside IR35. This role allows hybrid working with an expectation to attend the office 3 days per week. You will need to either hold current BPSS clearance or have the ability to pass it, and be eligible for SC clearance. The successful Senior Java Developer will possess proven skills working with the following * Java 21 (or later) * Test Driven Development (TDD) and Behaviour Driven Development (BDD) * Large microservice architectures * Agile environments and pair programming * Implementing APIs for internal and external use * Building automated test suites in CI/CD environments * Unix/Linux operating systems * Communicating technical concepts to non-technical audiences * Jackson, JAX-RS, Mockito * ActiveMQ or Kafka
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        NEW
        Contract: Until end of 2025, rolling extensions - Inside IR35 - Were partnering with a leading financial services client in Sheffield who are seeking a Skilled Python Developer to join their team. Youll be instrumental in building scalable automation solutions to streamline and optimise database operations. This is a hybrid role (3 days per week in Sheffield), offering an initial contract until the end of the year with strong potential for rolling extensions. * Design, develop, and maintain automation solutions for database operations and rollouts * Build and integrate APIs for database management and automation workflows * Troubleshoot automation issues across scripting, APIs, and containerised environments * Proven experience in Python development & FastAPI * Strong knowledge of PostgreSQL database administration * Excellent problem-solving, debugging, and analytica
        Contract: Until end of 2025, rolling extensions - Inside IR35 - Were partnering with a leading financial services client in Sheffield who are seeking a Skilled Python Developer to join their team. Youll be instrumental in building scalable automation solutions to streamline and optimise database operations. This is a hybrid role (3 days per week in Sheffield), offering an initial contract until the end of the year with strong potential for rolling extensions. * Design, develop, and maintain automation solutions for database operations and rollouts * Build and integrate APIs for database management and automation workflows * Troubleshoot automation issues across scripting, APIs, and containerised environments * Proven experience in Python development & FastAPI * Strong knowledge of PostgreSQL database administration * Excellent problem-solving, debugging, and analytica
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        40 exact matches jobs are outside your preferred location

        Java Developer

        Henderson Scott
        M1, Manchester
        Umbrella - inside IR35
        API development and integration
        API development and integration
        NEWFEATURED
        Role Title: Software Tester - Duration: 6 month contract - Location: Telford, hybrid 2 days per week onsite - Rate: up to £380 p/d Umbrella inside IR35 - Clearance required: Ideally SC cleared or SC Eligible is required - Role purpose / summary - We are seeking a skilled Software Tester to join our dynamic team. The ideal candidate will have a strong background in software testing and quality assurance, with expertise in Java and related technologies. You will be responsible for designing, implementing, and executing test plans to ensure the quality and functionality of our software products. Key Skills/ requirements - Develop and execute test plans, test cases, and test scripts for Java applications. Perform functional, integration, and regression testing. Collaborate with developers and product managers to understand requirements and design test strategies.
        Role Title: Software Tester - Duration: 6 month contract - Location: Telford, hybrid 2 days per week onsite - Rate: up to £380 p/d Umbrella inside IR35 - Clearance required: Ideally SC cleared or SC Eligible is required - Role purpose / summary - We are seeking a skilled Software Tester to join our dynamic team. The ideal candidate will have a strong background in software testing and quality assurance, with expertise in Java and related technologies. You will be responsible for designing, implementing, and executing test plans to ensure the quality and functionality of our software products. Key Skills/ requirements - Develop and execute test plans, test cases, and test scripts for Java applications. Perform functional, integration, and regression testing. Collaborate with developers and product managers to understand requirements and design test strategies.
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        NEW
        Reimagine the Role of AI in Human Travel - At Travel Counsellors, were not just adopting AI - were building a future where it enhances every human interaction. With 30+ years of history and 2,200+ independent travel entrepreneurs worldwide, weve always believed in the power of personal service. Now, were using AI to scale care, creativity, and connection like never before. Our next-generation travel platform is being transformed by intelligent features, with TC Co-Pilot at the heart of it. As AI Product Owner, youll lead the charge in embedding smart systems across our business, from hyper-personalised experiences to operational excellence. If youre excited by the idea of combining cutting-edge AI with the depth of human empathy, this is your moment. *Please note - this is a 12-month fixed-term contract - About the Role - Your Mission - Take the reins of AI product in
        Reimagine the Role of AI in Human Travel - At Travel Counsellors, were not just adopting AI - were building a future where it enhances every human interaction. With 30+ years of history and 2,200+ independent travel entrepreneurs worldwide, weve always believed in the power of personal service. Now, were using AI to scale care, creativity, and connection like never before. Our next-generation travel platform is being transformed by intelligent features, with TC Co-Pilot at the heart of it. As AI Product Owner, youll lead the charge in embedding smart systems across our business, from hyper-personalised experiences to operational excellence. If youre excited by the idea of combining cutting-edge AI with the depth of human empathy, this is your moment. *Please note - this is a 12-month fixed-term contract - About the Role - Your Mission - Take the reins of AI product in
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        NEWFEATURED
        Job Title: Observability & Telemetry Engineer- Knutsford- 6 Months- £350 Per Day- Inside IR35 We're looking for a skilled Observability and Telemetry Engineer to support EaaS evolution efforts. You'll be instrumental in enhancing system monitoring and performance analysis. * Proficiency in PHP or Python * Solid understanding of Oracle and relational databases * Comfortable with both Linux and Windows environments * Hands-on experience with monitoring tools (e.g., AppDynamics, ITRS, Elastic APM, Grafana) * Experience with Angular, NodeJS * Knowledge of APIs, ETL processes, and scripting * Familiarity with Openshift, Docker, Kubernetes, and cloud technologies (IaaS, PaaS, SaaS) Start Date: ASAP Please apply promptly if you are interested as interviews will be commencing soon.
        Job Title: Observability & Telemetry Engineer- Knutsford- 6 Months- £350 Per Day- Inside IR35 We're looking for a skilled Observability and Telemetry Engineer to support EaaS evolution efforts. You'll be instrumental in enhancing system monitoring and performance analysis. * Proficiency in PHP or Python * Solid understanding of Oracle and relational databases * Comfortable with both Linux and Windows environments * Hands-on experience with monitoring tools (e.g., AppDynamics, ITRS, Elastic APM, Grafana) * Experience with Angular, NodeJS * Knowledge of APIs, ETL processes, and scripting * Familiarity with Openshift, Docker, Kubernetes, and cloud technologies (IaaS, PaaS, SaaS) Start Date: ASAP Please apply promptly if you are interested as interviews will be commencing soon.
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        Senior Software Engineer

        Commify
        Nottingham, Nottinghamshire
        £60,000 - £70,000 a year
        Commify is on a mission to revolutionise business communications, and we are looking for an experienced Senior Software Engineer to join our passionate team. In this role, you will lead the development and enhancement of our cutting-edge messaging platform, ensuring it meets the evolving needs of businesses around the world. Your expertise will help shape our product vision, drive innovation, and create exceptional user experiences. As a Senior Software Engineer, you will collaborate closely with product managers, designers, and fellow engineers to deliver high-quality software solutions. We value creativity, critical thinking, and a proactive approach to problem-solving. If you have a strong technical background and want to work in a fast-paced environment, Commify is the perfect place for you. Requirements
        Commify is on a mission to revolutionise business communications, and we are looking for an experienced Senior Software Engineer to join our passionate team. In this role, you will lead the development and enhancement of our cutting-edge messaging platform, ensuring it meets the evolving needs of businesses around the world. Your expertise will help shape our product vision, drive innovation, and create exceptional user experiences. As a Senior Software Engineer, you will collaborate closely with product managers, designers, and fellow engineers to deliver high-quality software solutions. We value creativity, critical thinking, and a proactive approach to problem-solving. If you have a strong technical background and want to work in a fast-paced environment, Commify is the perfect place for you. Requirements
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        NEW

        Developer Advocate

        Embeddable
        Manchester, Greater Manchester
        £60,000 - £75,000 a year
        Who are we? At Embeddable, you can expect a very fast pace, ambitious goals and career-defining work. This is not your regular office job - we're looking for people who will live this product and give their best every day. This is just your default, without needing to be pushed. We launched in December 2023 and are already taking the developer world by storm! Like how Stripe enables developers to add payments to their platform and Unity enables you to build world-class games, Embeddable is the end-to-end developer platform for building seamless, lightning-fast customer-facing analytics directly into your product. As a developer, adding a couple of charts to your online platform is easy. Scaling analytics to tens of thousands of end-users, who all have differing data needs and data questions, is a hard problem.
        Who are we? At Embeddable, you can expect a very fast pace, ambitious goals and career-defining work. This is not your regular office job - we're looking for people who will live this product and give their best every day. This is just your default, without needing to be pushed. We launched in December 2023 and are already taking the developer world by storm! Like how Stripe enables developers to add payments to their platform and Unity enables you to build world-class games, Embeddable is the end-to-end developer platform for building seamless, lightning-fast customer-facing analytics directly into your product. As a developer, adding a couple of charts to your online platform is easy. Scaling analytics to tens of thousands of end-users, who all have differing data needs and data questions, is a hard problem.
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        NEW

        Product Manager – App & Website

        Well Pharmacy
        Manchester, Greater Manchester
        Up to £65,000 a year
        Overview of the role - Were looking for an experienced Product Manager to lead our App and Website portfolio within the Digital Product team. These platforms are the core of our patient and customer experience, spanning NHS prescriptions, private clinics, and eCommerce across multiple brands. Today, they run on a mix of Magento, BigCommerce, and React Native and youll help shape their evolution into a unified, composable healthcare ecosystem. This role sits at the heart of our transformation: guiding outsourced development squads, ensuring work aligns with business priorities, and championing patient-centred digital journeys. Alongside direct ownership of the app and website roadmap, youll also provide oversight of a second agency squad flagging risks, ensuring build approaches are sound, and keeping delivery aligned with the broader product strategy.
        Overview of the role - Were looking for an experienced Product Manager to lead our App and Website portfolio within the Digital Product team. These platforms are the core of our patient and customer experience, spanning NHS prescriptions, private clinics, and eCommerce across multiple brands. Today, they run on a mix of Magento, BigCommerce, and React Native and youll help shape their evolution into a unified, composable healthcare ecosystem. This role sits at the heart of our transformation: guiding outsourced development squads, ensuring work aligns with business priorities, and championing patient-centred digital journeys. Alongside direct ownership of the app and website roadmap, youll also provide oversight of a second agency squad flagging risks, ensuring build approaches are sound, and keeping delivery aligned with the broader product strategy.
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        NEW
        One of our leading clients is looking to recruit a UI Engineer / Developer / Front End Developer / Software Engineer. Location remote - Duration 6 months - Experience in a UI Engineer / Software Engineer / Front End Developer / Angular Developer role - Angular experience essential - Building and maintaining responsive and accessible interfaces at scale - Familiarity with state management libraries (e.g., Redux, Zustand) and component-based architectures - Solid understanding of web performance optimisation, testing (unit, integration, and end-to-end), and cross-browser compatibility - Collaborate with UX designers and product teams to translate design wireframes and prototypes into working front-end components - Ensure a consistent look and feel across all digital products through the implementation and maintenance of a shared design system.
        One of our leading clients is looking to recruit a UI Engineer / Developer / Front End Developer / Software Engineer. Location remote - Duration 6 months - Experience in a UI Engineer / Software Engineer / Front End Developer / Angular Developer role - Angular experience essential - Building and maintaining responsive and accessible interfaces at scale - Familiarity with state management libraries (e.g., Redux, Zustand) and component-based architectures - Solid understanding of web performance optimisation, testing (unit, integration, and end-to-end), and cross-browser compatibility - Collaborate with UX designers and product teams to translate design wireframes and prototypes into working front-end components - Ensure a consistent look and feel across all digital products through the implementation and maintenance of a shared design system.
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        NEW
        A ServiceNow Architect is sought by our client to work with their team to deliver continuous improvement and development of the Roadmap for end users. The existing team is a mixture of their own resources and 3rd party suppliers. You will be a highly experienced ServiceNow consultant, with a proven track record in ServiceNow development, including certification and experience in implementing different ServiceNow implementation levels and components.. Key Details * INSIDE IR35 * Remote working - Hybrid model * 2 days per week on-site available across various UK locations * 12 months * Must be UK resident * Must be able to work without sponsorship * Must be a ServiceNow Certified Technical Architect - Essential Criteria * Current ServiceNow Certified Technical Architect * Significant previous experience of working at a Senior ServiceNow level, including Architecture and
        A ServiceNow Architect is sought by our client to work with their team to deliver continuous improvement and development of the Roadmap for end users. The existing team is a mixture of their own resources and 3rd party suppliers. You will be a highly experienced ServiceNow consultant, with a proven track record in ServiceNow development, including certification and experience in implementing different ServiceNow implementation levels and components.. Key Details * INSIDE IR35 * Remote working - Hybrid model * 2 days per week on-site available across various UK locations * 12 months * Must be UK resident * Must be able to work without sponsorship * Must be a ServiceNow Certified Technical Architect - Essential Criteria * Current ServiceNow Certified Technical Architect * Significant previous experience of working at a Senior ServiceNow level, including Architecture and
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        NEWFEATURED
        SC Cleared Blue Prism Developer - 6 months - circa £500 a day INSIDE IR35 - Remote - We are looking for an SC Cleared BluePrism Developer to work within the Central Government sector - Looking for an experienced Automation developer. 1. Must have SC clearance - 2. Must have BluePrism Development experience - 3. Ideally have experience in PowerAutomate/APIs development - 4. Must be able to delivery independently, reporting to an automation lead but these automations will be theirs to own - Please forward your profile for consideration - Damia Group Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept our Data Protection Policy which can be found on our website. Please note that no terminology in this advert is intended to discriminate on the grounds of a person's
        SC Cleared Blue Prism Developer - 6 months - circa £500 a day INSIDE IR35 - Remote - We are looking for an SC Cleared BluePrism Developer to work within the Central Government sector - Looking for an experienced Automation developer. 1. Must have SC clearance - 2. Must have BluePrism Development experience - 3. Ideally have experience in PowerAutomate/APIs development - 4. Must be able to delivery independently, reporting to an automation lead but these automations will be theirs to own - Please forward your profile for consideration - Damia Group Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept our Data Protection Policy which can be found on our website. Please note that no terminology in this advert is intended to discriminate on the grounds of a person's
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        Senior PHP Developer - UK Remote

        Global Technology Solutions Ltd
        UK
        £350- £370 per day - Inside IR35
        Senior PHP Developer - Location: Home-based - Remote - UK Based applicants only - Duration: Contract until 31 st December 2025 Expected extension - Rate: £350 - £370 Inside IR35 - Are you an experienced Senior PHP Developer with a passion for building secure, scalable, and business-critical applications? Were looking for a Senior PHP Developer to join our transformation team someone who can drive technical excellence, mentor others, and deliver innovative solutions. What Youll Do * Develop and maintain business systems, applications, and integrations. * Write secure, scalable, and maintainable code following best practices (MVC standards). * Design and build intuitive user interfaces using HTML, CSS, JavaScript (Vue.js or similar). * Review code and ensure high-quality, defect-free releases. * Document system architecture, design iterations, and processes.
        Senior PHP Developer - Location: Home-based - Remote - UK Based applicants only - Duration: Contract until 31 st December 2025 Expected extension - Rate: £350 - £370 Inside IR35 - Are you an experienced Senior PHP Developer with a passion for building secure, scalable, and business-critical applications? Were looking for a Senior PHP Developer to join our transformation team someone who can drive technical excellence, mentor others, and deliver innovative solutions. What Youll Do * Develop and maintain business systems, applications, and integrations. * Write secure, scalable, and maintainable code following best practices (MVC standards). * Design and build intuitive user interfaces using HTML, CSS, JavaScript (Vue.js or similar). * Review code and ensure high-quality, defect-free releases. * Document system architecture, design iterations, and processes.
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        See yourself at Dataminr - As a Senior Product Manager, Cybersecurity, you'll lead the development of cutting-edge, AI-powered cybersecurity products at Dataminr. In this role you'll be on the front lines, defining and delivering revolutionary, AI-powered products that solve the most critical security challenges. You'll work with world-class engineers and data scientists to turn groundbreaking ideas into market-defining solutions. This role is for a builder who thrives on fast-paced, high-impact worksomeone who is just as comfortable shaping product strategy as they are digging into the latest LLMs for threat detection. This remote position is open to candidates who are located in the UK or Ireland. AI Innovation at Dataminr - Working at Dataminr youll have the opportunity to tackle the most exciting trends in AI on a daily basis to power a revolutionary product that
        See yourself at Dataminr - As a Senior Product Manager, Cybersecurity, you'll lead the development of cutting-edge, AI-powered cybersecurity products at Dataminr. In this role you'll be on the front lines, defining and delivering revolutionary, AI-powered products that solve the most critical security challenges. You'll work with world-class engineers and data scientists to turn groundbreaking ideas into market-defining solutions. This role is for a builder who thrives on fast-paced, high-impact worksomeone who is just as comfortable shaping product strategy as they are digging into the latest LLMs for threat detection. This remote position is open to candidates who are located in the UK or Ireland. AI Innovation at Dataminr - Working at Dataminr youll have the opportunity to tackle the most exciting trends in AI on a daily basis to power a revolutionary product that
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        NEW
        You will bring deep expertise in Okta capabilities, including Okta Customer Identity Cloud (CIC) , Okta Workforce Identity Cloud (WIC) , Single Sign-On, Adaptive Multi-Factor Authentication, API Access Management, Lifecycle Management, and Universal Directory. * Hands-on experience delivering Okta Identity Cloud solutions, including configuration of SSO, Adaptive MFA, API Access Management, and Lifecycle Management. * Proficiency with Okta Hooks (Inline, Event), Okta Workflows , and automation via Okta API , Terraform , or Okta Integration Network .
        You will bring deep expertise in Okta capabilities, including Okta Customer Identity Cloud (CIC) , Okta Workforce Identity Cloud (WIC) , Single Sign-On, Adaptive Multi-Factor Authentication, API Access Management, Lifecycle Management, and Universal Directory. * Hands-on experience delivering Okta Identity Cloud solutions, including configuration of SSO, Adaptive MFA, API Access Management, and Lifecycle Management. * Proficiency with Okta Hooks (Inline, Event), Okta Workflows , and automation via Okta API , Terraform , or Okta Integration Network .
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        Collaborate with Ops Tech to manage API use, system performance, and platform scalability. * Working knowledge of JavaScript or Python for API interactions for customizations.
        Collaborate with Ops Tech to manage API use, system performance, and platform scalability. * Working knowledge of JavaScript or Python for API interactions for customizations.
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        NEW

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        Frequently Asked Questions

        How many contract API jobs are there in Barnsley?
        There are 2 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 Aws, IT, Software Development, amongst many others.