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12 Contract API jobs in Northern Ireland + 20 miles
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Our client is a globally recognised organisation with a dedicated innovation function responsible for building cutting-edge applications that transform the working lives of finance and tax professionals. Their mission is to rapidly prototype ideas, gather meaningful user feedback and scale the solutions that deliver the biggest impact. They are now seeking a Senior Manager / Technical Lead to drive technical excellence, guide a high-performing Scrum team, and help deliver products used across their worldwide network. This is a unique opportunity to work in a collaborative, forward-thinking environment where your technical leadership directly shapes real-world outcomes. * Lead and mentor a multi-disciplinary Scrum team, fostering a high-performance engineering culture. * Architect and implement scalable, resilient technical solutions.
Our client is a globally recognised organisation with a dedicated innovation function responsible for building cutting-edge applications that transform the working lives of finance and tax professionals. Their mission is to rapidly prototype ideas, gather meaningful user feedback and scale the solutions that deliver the biggest impact. They are now seeking a Senior Manager / Technical Lead to drive technical excellence, guide a high-performing Scrum team, and help deliver products used across their worldwide network. This is a unique opportunity to work in a collaborative, forward-thinking environment where your technical leadership directly shapes real-world outcomes. * Lead and mentor a multi-disciplinary Scrum team, fostering a high-performance engineering culture. * Architect and implement scalable, resilient technical solutions.
Leading the implementation of complex features, from API design and backend services through to responsive, high-performance front-end experiences * Owning API architecture, ensuring solutions are secure, scalable, maintainable, and well-documented
Leading the implementation of complex features, from API design and backend services through to responsive, high-performance front-end experiences * Owning API architecture, ensuring solutions are secure, scalable, maintainable, and well-documented
2021 Best API & Best Trading Technology - presented by Global Fintech Awards - As a Staff Platform Engineer in this multi-disciplinary team, you will play an integral role in designing, implementing, and optimizing our API edge services, tooling, and infrastructure to ensure robust and secure API management. Collaborating closely with development teams, product managers, and system administrators, you will manage and enhance our API management solutions, ensuring high performance, scalability, and reliability. * Edge Services Leadership: Design and oversee the implementation of enterprise-level API edge services and infrastructure to ensure optimal organization, security, and efficiency. Lead the establishment of best practices for API management, encompassing version control, security policies, and sophisticated traffic management techniques.
2021 Best API & Best Trading Technology - presented by Global Fintech Awards - As a Staff Platform Engineer in this multi-disciplinary team, you will play an integral role in designing, implementing, and optimizing our API edge services, tooling, and infrastructure to ensure robust and secure API management. Collaborating closely with development teams, product managers, and system administrators, you will manage and enhance our API management solutions, ensuring high performance, scalability, and reliability. * Edge Services Leadership: Design and oversee the implementation of enterprise-level API edge services and infrastructure to ensure optimal organization, security, and efficiency. Lead the establishment of best practices for API management, encompassing version control, security policies, and sophisticated traffic management techniques.
The TP ICAP Group is a world leading provider of market infrastructure. Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data, through responsible and innovative solutions. Through our people and technology, we connect clients to superior liquidity and data solutions. The Group is home to a stable of premium brands. Collectively, TP ICAP is the largest interdealer broker in the world by revenue, the number one Energy & Commodities broker in the world, the worlds leading provider of OTC data, and an award winning all-to-all trading platform. Founded in London in 1866, the Group operates from more than 60 offices in 27 countries. We are 5,200 people strong. We work as one to achieve our vision of being the worlds most trusted, innovative, liquidity and data solutions specialist.
The TP ICAP Group is a world leading provider of market infrastructure. Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data, through responsible and innovative solutions. Through our people and technology, we connect clients to superior liquidity and data solutions. The Group is home to a stable of premium brands. Collectively, TP ICAP is the largest interdealer broker in the world by revenue, the number one Energy & Commodities broker in the world, the worlds leading provider of OTC data, and an award winning all-to-all trading platform. Founded in London in 1866, the Group operates from more than 60 offices in 27 countries. We are 5,200 people strong. We work as one to achieve our vision of being the worlds most trusted, innovative, liquidity and data solutions specialist.
This is a unique opportunity to shape the future of market data solutions through impactful API development, creative problem-solving, and collaboration with cross-functional teams.. * API Development: Design robust, secure, and efficient gRPC and REST APIs to enable real-time access to market data for key business domains (e.g., Risk Engine, End Investor platforms, Wealth tools, and Ascend UIs).
This is a unique opportunity to shape the future of market data solutions through impactful API development, creative problem-solving, and collaboration with cross-functional teams.. * API Development: Design robust, secure, and efficient gRPC and REST APIs to enable real-time access to market data for key business domains (e.g., Risk Engine, End Investor platforms, Wealth tools, and Ascend UIs).
Posted Yesterday Be an Early Applicant Belfast, County Antrim, Northern Ireland Belfast, County Antrim, Northern IrelandAs a Senior Test Engineer, you will develop and execute functional automated and manual tests within an agile team, learning new technologies while improving testing processes. The summary above was generated by AI Join Kainos and Shape the Future - At Kainos, were problem solvers, innovators, and collaborators - driven by a shared mission to create real impact. Whether were transforming digital services for millions, delivering cutting-edge Workday solutions, or pushing the boundaries of technology, we do it together. We believe in a people-first culture , where your ideas are valued, your growth is supported, and your contributions truly make a difference. Here, youll be part of a diverse, ambitious team that celebrates creativity and collaboration.
Posted Yesterday Be an Early Applicant Belfast, County Antrim, Northern Ireland Belfast, County Antrim, Northern IrelandAs a Senior Test Engineer, you will develop and execute functional automated and manual tests within an agile team, learning new technologies while improving testing processes. The summary above was generated by AI Join Kainos and Shape the Future - At Kainos, were problem solvers, innovators, and collaborators - driven by a shared mission to create real impact. Whether were transforming digital services for millions, delivering cutting-edge Workday solutions, or pushing the boundaries of technology, we do it together. We believe in a people-first culture , where your ideas are valued, your growth is supported, and your contributions truly make a difference. Here, youll be part of a diverse, ambitious team that celebrates creativity and collaboration.
Would you like to shape the future of digital agriculture while working with modern mobile technologies? Join our GEA Farm Technologies team in Belfast! Our mobile solutions empower farmers and technicians worldwide. As a Flutter Developer, youll help build intuitive, high-performance mobile apps that integrate with our cloud-based farm management systems. Youll be part of a motivated team in Bnen (Dortmund/Hamm area), contributing to sustainable farming through digital innovation. We are part of GEA Digital, focused on developing digital solutions and services. We collaborate across disciplines and with external partners. We build solutions for monitoring and managing systems for the dairy farming industry. Our tech stack includes Firebase, REST APIs, Azure, Git, and CI/CD tools like Jenkins and Azure DevOps. We are rebuilding our mobile experience with Flutter.
Would you like to shape the future of digital agriculture while working with modern mobile technologies? Join our GEA Farm Technologies team in Belfast! Our mobile solutions empower farmers and technicians worldwide. As a Flutter Developer, youll help build intuitive, high-performance mobile apps that integrate with our cloud-based farm management systems. Youll be part of a motivated team in Bnen (Dortmund/Hamm area), contributing to sustainable farming through digital innovation. We are part of GEA Digital, focused on developing digital solutions and services. We collaborate across disciplines and with external partners. We build solutions for monitoring and managing systems for the dairy farming industry. Our tech stack includes Firebase, REST APIs, Azure, Git, and CI/CD tools like Jenkins and Azure DevOps. We are rebuilding our mobile experience with Flutter.
The TP ICAP Group is a world leading provider of market infrastructure. Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data, through responsible and innovative solutions. Through our people and technology, we connect clients to superior liquidity and data solutions. The Group is home to a stable of premium brands. Collectively, TP ICAP is the largest interdealer broker in the world by revenue, the number one Energy & Commodities broker in the world, the worlds leading provider of OTC data, and an award winning all-to-all trading platform. The Group operates from more than 60 offices in 27 countries. We are 5,200 people strong. We work as one to achieve our vision of being the worlds most trusted, innovative, liquidity and data solutions specialist. Role Overview
The TP ICAP Group is a world leading provider of market infrastructure. Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data, through responsible and innovative solutions. Through our people and technology, we connect clients to superior liquidity and data solutions. The Group is home to a stable of premium brands. Collectively, TP ICAP is the largest interdealer broker in the world by revenue, the number one Energy & Commodities broker in the world, the worlds leading provider of OTC data, and an award winning all-to-all trading platform. The Group operates from more than 60 offices in 27 countries. We are 5,200 people strong. We work as one to achieve our vision of being the worlds most trusted, innovative, liquidity and data solutions specialist. Role Overview
REST API design
REST API design
Your role will focus on building scalable automation frameworks, implementing effective test strategies, and promoting a shift-left approachwith API-level automation as a key priority.
Your role will focus on building scalable automation frameworks, implementing effective test strategies, and promoting a shift-left approachwith API-level automation as a key priority.
Backend is primarily serverless (API Gateway + Lambda) so exposure to those would be highly beneficial
Backend is primarily serverless (API Gateway + Lambda) so exposure to those would be highly beneficial
2021 Best API & Best Trading Technology - presented by Global Fintech Awards
2021 Best API & Best Trading Technology - presented by Global Fintech Awards
32 exact matches jobs are outside your preferred location
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Integration with SFTP, API-based connections, and secure channels
Integration with SFTP, API-based connections, and secure channels
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Integrate the productwith client Allegro installations, including API connectivity and database schema mapping * Experience with API testing
Integrate the productwith client Allegro installations, including API connectivity and database schema mapping * Experience with API testing
Hands-on Experience working with Business Rules, Client Scripts, UI Policies, UI Scripts, UI Actions, UI Pages, Script Includes, Access Control Lists, API's, Service Portal etc...
Hands-on Experience working with Business Rules, Client Scripts, UI Policies, UI Scripts, UI Actions, UI Pages, Script Includes, Access Control Lists, API's, Service Portal etc...
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Contract Opportunity – Technical Architect - 12 Month Contract
Contract Opportunity – Technical Architect - 12 Month Contract
Stealth IT Consulting Limited
UK
Up to £500 per day Up to £500 (Outside) per day
API Migration | Enterprise Platform Transition - Im supporting a major public-sector digital transformation programme and looking for an experienced Technical Architectto lead a large-scale API migration project. * Lead the architecture for a significant API migration programme - If youre an experienced Technical Architect with proven API migration experience and available for a long-term Outside IR35 engagement, Id be keen to speak with you.
API Migration | Enterprise Platform Transition - Im supporting a major public-sector digital transformation programme and looking for an experienced Technical Architectto lead a large-scale API migration project. * Lead the architecture for a significant API migration programme - If youre an experienced Technical Architect with proven API migration experience and available for a long-term Outside IR35 engagement, Id be keen to speak with you.
FEATURED
Experience with Gurobi Python API (gurobipy)
Experience with Gurobi Python API (gurobipy)
Mobile Architect (iOS & Android) - £500 Outside
Mobile Architect (iOS & Android) - £500 Outside
Stealth IT Consulting Limited
UK
Up to £500 per day Up to £500 Outside per day
Contract: 12 Months - Day Rate:£500 per day (Outside IR35) Clearance: SC Eligible - Sector:UK Public Sector - Location: Fully Remote (UK-based) Start Date: ASAP - Overview - We are seeking an experienced Mobile Architect to support a large-scale public sector digital transformation programme. The successful candidate will lead mobile solution architecture across iOS and Android, ensuring scalable, secure, and high-performing mobile services. This is a key role within a modern engineering environment, working closely with product teams, developers, and senior stakeholders. Key Responsibilities * Lead the end-to-end mobile architecture across iOS and Android platforms. * Define architectural standards, best practices, and technical direction. * Work closely with development teams to ensure architectural alignment and technical quality.
Contract: 12 Months - Day Rate:£500 per day (Outside IR35) Clearance: SC Eligible - Sector:UK Public Sector - Location: Fully Remote (UK-based) Start Date: ASAP - Overview - We are seeking an experienced Mobile Architect to support a large-scale public sector digital transformation programme. The successful candidate will lead mobile solution architecture across iOS and Android, ensuring scalable, secure, and high-performing mobile services. This is a key role within a modern engineering environment, working closely with product teams, developers, and senior stakeholders. Key Responsibilities * Lead the end-to-end mobile architecture across iOS and Android platforms. * Define architectural standards, best practices, and technical direction. * Work closely with development teams to ensure architectural alignment and technical quality.
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Ful Stack Web Developer | £35,000 - £45,000 | Remote-first | Lancashire HQ (2-3 days onsite per year) I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They're looking for a Web Software Developer to join a collaborative internal engineering team responsible for building and improving these systems. This role offers the opportunity to work on business-critical applications used across the organisation, contributing to the development of modern web-based platforms while learning from experienced engineers in the team. The environment places a strong emphasis on clean code, structured development practices, and quality-focused ...
Ful Stack Web Developer | £35,000 - £45,000 | Remote-first | Lancashire HQ (2-3 days onsite per year) I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They're looking for a Web Software Developer to join a collaborative internal engineering team responsible for building and improving these systems. This role offers the opportunity to work on business-critical applications used across the organisation, contributing to the development of modern web-based platforms while learning from experienced engineers in the team. The environment places a strong emphasis on clean code, structured development practices, and quality-focused ...
I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They are looking for a Senior Web Software Developer to join a small, collaborative internal engineering team responsible for designing and building these systems from the ground up. This role offers the opportunity to work on business-critical applications used across the organisation, helping shape the architecture and development standards as the company transitions to a modern web-based platform. The team places a strong emphasis on clean code, structured development practices, and quality-first engineering, and they are looking for someone who enjoys solving real-world ...
I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They are looking for a Senior Web Software Developer to join a small, collaborative internal engineering team responsible for designing and building these systems from the ground up. This role offers the opportunity to work on business-critical applications used across the organisation, helping shape the architecture and development standards as the company transitions to a modern web-based platform. The team places a strong emphasis on clean code, structured development practices, and quality-first engineering, and they are looking for someone who enjoys solving real-world ...
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Full Stack Engineer - Outisde IR35 up to £525 - Intial 4 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Node/Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
Full Stack Engineer - Outisde IR35 up to £525 - Intial 4 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Node/Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
Job Title: Java Developer - Rate: £400 (InsideIR35) Duration: 12 Months - Location: Remote - Clearance: BPSS - Stages: 1 Stage - Must Have Government Experience - Key Responsibilities * Design, develop, and maintain Java applications in line with digital and engineering standards * Build and supportmicroservicesandRESTful APIs * Collaborate with product owners, designers, testers, and DevOps engineers in agile teams * Write clean, maintainable, and well-tested code (TDD/BDD where applicable) * Participate in code reviews and contribute to continuous improvement * Ensure applications meetsecurity, accessibility, and performancestandards * Troubleshoot and resolve defects across development and production environments * Support CI/CD pipelines and automated deployment processes - Essential Skills & Experience * Strong commercial experience withJava (Java 8+)
Job Title: Java Developer - Rate: £400 (InsideIR35) Duration: 12 Months - Location: Remote - Clearance: BPSS - Stages: 1 Stage - Must Have Government Experience - Key Responsibilities * Design, develop, and maintain Java applications in line with digital and engineering standards * Build and supportmicroservicesandRESTful APIs * Collaborate with product owners, designers, testers, and DevOps engineers in agile teams * Write clean, maintainable, and well-tested code (TDD/BDD where applicable) * Participate in code reviews and contribute to continuous improvement * Ensure applications meetsecurity, accessibility, and performancestandards * Troubleshoot and resolve defects across development and production environments * Support CI/CD pipelines and automated deployment processes - Essential Skills & Experience * Strong commercial experience withJava (Java 8+)
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Senior Fullstack Software Engineer UK Remote - Are you ready to put your technical expertise to work in transforming services that directly improve lives across the UK? Our client provides emergency accommodation and vital support for some of the countrys most vulnerable people including survivors of domestic abuse, refugees, and individuals seeking asylum. Their mission is to create safe environments and deliver innovative solutions that protect and empower those most in need. They are now looking for a Senior Software Engineerto take a key role in rebuilding and modernising their software landscape. This is a unique opportunity to shape critical systems that underpin essential frontline services. Whats on Offer * Fully remote within the UK * Salary up to £80,000 * 33 days annual leave * Pension & healthcare * A role with genuine social impact
Senior Fullstack Software Engineer UK Remote - Are you ready to put your technical expertise to work in transforming services that directly improve lives across the UK? Our client provides emergency accommodation and vital support for some of the countrys most vulnerable people including survivors of domestic abuse, refugees, and individuals seeking asylum. Their mission is to create safe environments and deliver innovative solutions that protect and empower those most in need. They are now looking for a Senior Software Engineerto take a key role in rebuilding and modernising their software landscape. This is a unique opportunity to shape critical systems that underpin essential frontline services. Whats on Offer * Fully remote within the UK * Salary up to £80,000 * 33 days annual leave * Pension & healthcare * A role with genuine social impact
Scala Developer – 12-Month Contract (Outside IR35)
Scala Developer – 12-Month Contract (Outside IR35)
Stealth IT Consulting Limited
UK
£450 per day £450 per day (Outside IR35)
£450 per day Fully Remote (UK-based) Occasional Out-of-Hours Work Required Im supporting a long-term programme looking for an experienced Scala Developer to join a high-performing engineering team on a 12-month Outside IR35 contract. * Strong commercial experience with Scala * Experience building high-quality, scalable backend services * Exposure to microservices, REST APIs, functional programming * Strong understanding of CI/CD and modern engineering practices * Cloud experience (AWS ideally) * Able to support occasional out-of-hours work when required?? * £450/day (Outside IR35) * 12 months * Remote * Immediate interviews & quick onboarding If youre available and interested, drop me a message or send over your CV.
£450 per day Fully Remote (UK-based) Occasional Out-of-Hours Work Required Im supporting a long-term programme looking for an experienced Scala Developer to join a high-performing engineering team on a 12-month Outside IR35 contract. * Strong commercial experience with Scala * Experience building high-quality, scalable backend services * Exposure to microservices, REST APIs, functional programming * Strong understanding of CI/CD and modern engineering practices * Cloud experience (AWS ideally) * Able to support occasional out-of-hours work when required?? * £450/day (Outside IR35) * 12 months * Remote * Immediate interviews & quick onboarding If youre available and interested, drop me a message or send over your CV.
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Data Analyst (Remote)
Data Analyst (Remote)
Marstep Resourcing Solutions
UK
Up to £28,500 per annum Plus Quarterly Profit Share + Benefits + Caree
This is a great opportunity to join a long established and growing business where you will have the opportunity to develop a worthwhile career and be rewarded with good benefits and profit share. Salary From £25k to £28.5k - depending upon experience plus profit share of around 15% per annum and an opportunity to develop a long career. You may have some or all of the skills/requirements below, but training can be provided in areas and you will have the chance to learn skills you are not currently familiar with. Location:(Fully Remote) About Us - Data has the power to transform businesses, and we thrive on unlocking its full potential. We're looking for a data analyst who wants to take the next step up and join our growing team, offering a £25,000-£28,500 salary and the flexibility of a fully remote role.
This is a great opportunity to join a long established and growing business where you will have the opportunity to develop a worthwhile career and be rewarded with good benefits and profit share. Salary From £25k to £28.5k - depending upon experience plus profit share of around 15% per annum and an opportunity to develop a long career. You may have some or all of the skills/requirements below, but training can be provided in areas and you will have the chance to learn skills you are not currently familiar with. Location:(Fully Remote) About Us - Data has the power to transform businesses, and we thrive on unlocking its full potential. We're looking for a data analyst who wants to take the next step up and join our growing team, offering a £25,000-£28,500 salary and the flexibility of a fully remote role.
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