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Locations
Locations
Salaries
Date posted
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49 API jobs in Northern Ireland + 5 miles
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Senior Python Developer ( Serverless/AWS Lambda)
Senior Python Developer ( Serverless/AWS Lambda)
Ocho
Belfast, County Antrim
£100,000 - £120,000 per annum
Contribute to API development (REST/GraphQL) and data integration pipelines * Deep understanding of AWS serverless tools (Lambda, DynamoDB, API Gateway, etc.) * Familiarity with GraphQL APIs and scalable API design
Contribute to API development (REST/GraphQL) and data integration pipelines * Deep understanding of AWS serverless tools (Lambda, DynamoDB, API Gateway, etc.) * Familiarity with GraphQL APIs and scalable API design
Salary: £100k+ market-leading benefits package - Our client is a rapidly scaling, VC-backed technology company focused on cloud cost optimization and FinOps solutions for enterprises and MSPs operating across hybrid and multi-cloud environments. With over a decade of experience and recent strategic acquisitions, they are evolving into a product-led platform business - leveraging AI/ML insights, structured cost data, and seamless integrations to drive cloud ROI. A proud member of the FinOps Foundation, the company is at the forefront of the emerging BillOps movement and is investing heavily in machine learning talent to unlock the next phase of intelligent automation and cost intelligence. As one of the first UK/Northern Ireland ML engineering hires, this is a rare opportunity to shape both the technical foundation and future team culture.
Salary: £100k+ market-leading benefits package - Our client is a rapidly scaling, VC-backed technology company focused on cloud cost optimization and FinOps solutions for enterprises and MSPs operating across hybrid and multi-cloud environments. With over a decade of experience and recent strategic acquisitions, they are evolving into a product-led platform business - leveraging AI/ML insights, structured cost data, and seamless integrations to drive cloud ROI. A proud member of the FinOps Foundation, the company is at the forefront of the emerging BillOps movement and is investing heavily in machine learning talent to unlock the next phase of intelligent automation and cost intelligence. As one of the first UK/Northern Ireland ML engineering hires, this is a rare opportunity to shape both the technical foundation and future team culture.
Senior Software Engineer Ruby on Rails - Location: Remote - Type: Full-time | Permanent - Tech Stack: Ruby on Rails, StimulusJS, PostgreSQL, Sidekiq, GraphQL - The Opportunity - Join a fast-growing platform used by thousands across the US. Were looking for a Senior Full Stack Engineer who thrives in Ruby on Rails environments and knows how to ship clean, scalable features. Youll be building new APIs, refining performance, and working in close collaboration with product, design and engineering peers. This is a high-impact role with room to grow ideal for someone whos hands-on, thoughtful, and excited by complex technical challenges. What Youll Be Doing * Build, scale and improve core platform features. * Write robust, maintainable Ruby code across services and APIs. * Work across web and mobile backends, with a strong eye on performance. * Integrate third-party APIs an
Senior Software Engineer Ruby on Rails - Location: Remote - Type: Full-time | Permanent - Tech Stack: Ruby on Rails, StimulusJS, PostgreSQL, Sidekiq, GraphQL - The Opportunity - Join a fast-growing platform used by thousands across the US. Were looking for a Senior Full Stack Engineer who thrives in Ruby on Rails environments and knows how to ship clean, scalable features. Youll be building new APIs, refining performance, and working in close collaboration with product, design and engineering peers. This is a high-impact role with room to grow ideal for someone whos hands-on, thoughtful, and excited by complex technical challenges. What Youll Be Doing * Build, scale and improve core platform features. * Write robust, maintainable Ruby code across services and APIs. * Work across web and mobile backends, with a strong eye on performance. * Integrate third-party APIs an
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Full-time, Permanent - I am currently working with an NI based team who are looking for an experienced web developer to join the team. The company are looking for someone who is happy to come in and be one of the only Shopify developers in the team. You will work closely alongside the graphic designer and sales teams. The team require someone who can work on-site 4 days per-week. This is a great opportunity to move into one of the most successful online platforms in Ireland. They are open to mid-senior level candidates. * Build, customise and maintain responsive Shopify websites * Develop and implement custom themes, features, and third-party integrations * Optimise site performance, speed, and UX across devices * Work closely with our design, marketing, and product teams to translate ideas into functional, user-friendly storefronts
Full-time, Permanent - I am currently working with an NI based team who are looking for an experienced web developer to join the team. The company are looking for someone who is happy to come in and be one of the only Shopify developers in the team. You will work closely alongside the graphic designer and sales teams. The team require someone who can work on-site 4 days per-week. This is a great opportunity to move into one of the most successful online platforms in Ireland. They are open to mid-senior level candidates. * Build, customise and maintain responsive Shopify websites * Develop and implement custom themes, features, and third-party integrations * Optimise site performance, speed, and UX across devices * Work closely with our design, marketing, and product teams to translate ideas into functional, user-friendly storefronts
Are you an AI Engineer ready to design and deploy cutting-edge AI systems in a secure, regulated, cloud-first environment? My client is expanding with a multi-million-pound investment in new infrastructure and a significant recruitment drive. As part of this growth, they're looking for a skilled AI Engineer to take the lead in building secure, compliant, and high-performing AI solutions-particularly around Retrieval-Augmented Generation (RAG), Large Language Models (LLMs), and responsible AI deployment. This is an excellent opportunity to work in a modern, Microsoft-based tech stack, tackling greenfield projects that make a real impact in a highly regulated industry. What's in it for you? * Competitive Salary: £60-80k * 30 days of annual leave (rising to 35 over time) * Employer pension contributions * Employee Benefits Program (after probation)
Are you an AI Engineer ready to design and deploy cutting-edge AI systems in a secure, regulated, cloud-first environment? My client is expanding with a multi-million-pound investment in new infrastructure and a significant recruitment drive. As part of this growth, they're looking for a skilled AI Engineer to take the lead in building secure, compliant, and high-performing AI solutions-particularly around Retrieval-Augmented Generation (RAG), Large Language Models (LLMs), and responsible AI deployment. This is an excellent opportunity to work in a modern, Microsoft-based tech stack, tackling greenfield projects that make a real impact in a highly regulated industry. What's in it for you? * Competitive Salary: £60-80k * 30 days of annual leave (rising to 35 over time) * Employer pension contributions * Employee Benefits Program (after probation)
React Developer needed to join the world's newest IoT company * Are you a React/TypeScript developer looking for a new challenge? * Do you want to work with some of the brightest minds in Northern Ireland? * Want to work on true greenfield projects that nobody has done before? The Role - In this hands-on role, you'll be joining a small team of highly capable professionals responsible for designing, developing, and maintaining high-performance, scalable web applications using React and TypeScript. Your new company has a multi-billion-dollar revenue stream and no weak links as they've already started onboarding some of Northern Ireland's most prolific technologists. What's In It For You? * Market-leading salaries * Generous holidays and fully remote working available (NI Wide) * Attractive equity * Personal health & wellness package * Quarterly wellness workshops
React Developer needed to join the world's newest IoT company * Are you a React/TypeScript developer looking for a new challenge? * Do you want to work with some of the brightest minds in Northern Ireland? * Want to work on true greenfield projects that nobody has done before? The Role - In this hands-on role, you'll be joining a small team of highly capable professionals responsible for designing, developing, and maintaining high-performance, scalable web applications using React and TypeScript. Your new company has a multi-billion-dollar revenue stream and no weak links as they've already started onboarding some of Northern Ireland's most prolific technologists. What's In It For You? * Market-leading salaries * Generous holidays and fully remote working available (NI Wide) * Attractive equity * Personal health & wellness package * Quarterly wellness workshops
Senior Backend Engineer Kotlin / JVM | Cloud-Native Platform - Location: UK (Remote-first) Building Teams OCHO - Were working with a product-led scaleup building the next generation of marketplace infrastructurebringing together deep domain complexity, cloud-native scale, and a culture that values clean architecture, engineering maturity, and collaborative delivery. This client is growing their backend capability and hiring a Senior Backend Engineer who can balance systems thinking with code quality, fast iteration, and product ownership. This is a team where youll influence not just what gets builtbut how. What Youll Be Doing * Designing and building performant, secure, and scalable backend services using Kotlin within a Spring Boot and GCP ecosystem. * Contributing to the evolution of a distributed, service-oriented architecture, including ownership of core product
Senior Backend Engineer Kotlin / JVM | Cloud-Native Platform - Location: UK (Remote-first) Building Teams OCHO - Were working with a product-led scaleup building the next generation of marketplace infrastructurebringing together deep domain complexity, cloud-native scale, and a culture that values clean architecture, engineering maturity, and collaborative delivery. This client is growing their backend capability and hiring a Senior Backend Engineer who can balance systems thinking with code quality, fast iteration, and product ownership. This is a team where youll influence not just what gets builtbut how. What Youll Be Doing * Designing and building performant, secure, and scalable backend services using Kotlin within a Spring Boot and GCP ecosystem. * Contributing to the evolution of a distributed, service-oriented architecture, including ownership of core product
Job Title: Software Engineer Full Stack - Location: Hybrid - Our client is modernising its systems to deliver innovative, scalable solutions. Join us to shape the future of our platform with cutting-edge technology. Were seeking a Full Stack Software Engineer with expertise in the .NET framework and React to modernize our client's existing systems and build new features. Youll work across the development lifecycle, collaborating with a dynamic team to deliver impactful solutions. * Develop and modernize full-stack applications using .NET and React. * Build APIs, backend services, and responsive front-end applications. * Collaborate with cross-functional teams to deliver high-quality solutions. * Write clean, maintainable code and resolve technical challenges. * Experience with .NET (C# preferred) and React. * Strong understanding of relational databases (e.g., SQL Ser
Job Title: Software Engineer Full Stack - Location: Hybrid - Our client is modernising its systems to deliver innovative, scalable solutions. Join us to shape the future of our platform with cutting-edge technology. Were seeking a Full Stack Software Engineer with expertise in the .NET framework and React to modernize our client's existing systems and build new features. Youll work across the development lifecycle, collaborating with a dynamic team to deliver impactful solutions. * Develop and modernize full-stack applications using .NET and React. * Build APIs, backend services, and responsive front-end applications. * Collaborate with cross-functional teams to deliver high-quality solutions. * Write clean, maintainable code and resolve technical challenges. * Experience with .NET (C# preferred) and React. * Strong understanding of relational databases (e.g., SQL Ser
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Product Support Engineer - **MUST BE BASED IN NORTHERN IRELAND** MCS Group is delighted to be exclusively partnering up with a fantastic, new Cyber Security focused organisation on their search for a Product Support Engineer to join their growing team here in Belfast. This multi-national SAAS house champions career progression and growth, as well as a very trusting and flexible working environment. What You'll Do * Troubleshoot technical issues across Linux, AWS, databases, and containers * Support users through tickets, live chat, and screen shares * Create documentation and contribute to the knowledge base * Collaborate with engineering and product teams on escalations * Work US business hours, 2pm-10pm - What You'll Bring * Strong problem-solving skills and technical curiosity * Experience with cloud infrastructure, networking, and debugging
Product Support Engineer - **MUST BE BASED IN NORTHERN IRELAND** MCS Group is delighted to be exclusively partnering up with a fantastic, new Cyber Security focused organisation on their search for a Product Support Engineer to join their growing team here in Belfast. This multi-national SAAS house champions career progression and growth, as well as a very trusting and flexible working environment. What You'll Do * Troubleshoot technical issues across Linux, AWS, databases, and containers * Support users through tickets, live chat, and screen shares * Create documentation and contribute to the knowledge base * Collaborate with engineering and product teams on escalations * Work US business hours, 2pm-10pm - What You'll Bring * Strong problem-solving skills and technical curiosity * Experience with cloud infrastructure, networking, and debugging
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Professional Services | VANRATH Exclusive - VANRATH is delighted to be partnering with a leading professional services organisation based in Belfast to recruit a Senior Full Stack Engineer. This is an exciting opportunity to join a company undergoing significant digital transformation, offering the chance to work on high-impact projects in a flexible hybrid environment. You'll join a dynamic team responsible for building scalable, modern web applications using Node.js on the backend and either React or Angular on the frontend. This role requires a hands-on developer with strong architectural insight and a passion for clean, maintainable code. * Design, develop, and deploy full-stack solutions using modern JavaScript frameworks. * Collaborate with cross-functional teams including product, design, and DevOps. * Write high-quality, reusable, and testable code.
Professional Services | VANRATH Exclusive - VANRATH is delighted to be partnering with a leading professional services organisation based in Belfast to recruit a Senior Full Stack Engineer. This is an exciting opportunity to join a company undergoing significant digital transformation, offering the chance to work on high-impact projects in a flexible hybrid environment. You'll join a dynamic team responsible for building scalable, modern web applications using Node.js on the backend and either React or Angular on the frontend. This role requires a hands-on developer with strong architectural insight and a passion for clean, maintainable code. * Design, develop, and deploy full-stack solutions using modern JavaScript frameworks. * Collaborate with cross-functional teams including product, design, and DevOps. * Write high-quality, reusable, and testable code.
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The Role - Were seeking a Microsoft DevOps Engineer to join our client's growing technology team. In this role, youll be responsible for designing, implementing, and maintaining robust CI/CD pipelines, automating infrastructure deployments, and enabling continuous delivery across our Microsoft Azure environment. If you're passionate about cloud-native development, automation, and working in a collaborative DevOps culture we want to hear from you! Key Responsibilities * Design, develop, and maintain Azure DevOps pipelines for build, test, and deployment automation * Manage and evolve our Infrastructure as Code using ARM templates, Bicep, or Terraform * Work closely with developers and infrastructure teams to support agile delivery and scalable environments * Monitor and improve system performance, reliability, and security in Azure
The Role - Were seeking a Microsoft DevOps Engineer to join our client's growing technology team. In this role, youll be responsible for designing, implementing, and maintaining robust CI/CD pipelines, automating infrastructure deployments, and enabling continuous delivery across our Microsoft Azure environment. If you're passionate about cloud-native development, automation, and working in a collaborative DevOps culture we want to hear from you! Key Responsibilities * Design, develop, and maintain Azure DevOps pipelines for build, test, and deployment automation * Manage and evolve our Infrastructure as Code using ARM templates, Bicep, or Terraform * Work closely with developers and infrastructure teams to support agile delivery and scalable environments * Monitor and improve system performance, reliability, and security in Azure
Job Title: Software Engineer Full Stack - Location: Hybrid - Our client is modernising its systems to deliver innovative, scalable solutions. Join us to shape the future of our platform with cutting-edge technology. Were seeking a Full Stack Software Engineer with expertise in the .NET framework and React to modernize our client's existing systems and build new features. Youll work across the development lifecycle, collaborating with a dynamic team to deliver impactful solutions. * Develop and modernize full-stack applications using .NET and React. * Build APIs, backend services, and responsive front-end applications. * Collaborate with cross-functional teams to deliver high-quality solutions. * Write clean, maintainable code and resolve technical challenges. * Experience with .NET (C# preferred) and React. * Strong understanding of relational databases (e.g., SQL Ser
Job Title: Software Engineer Full Stack - Location: Hybrid - Our client is modernising its systems to deliver innovative, scalable solutions. Join us to shape the future of our platform with cutting-edge technology. Were seeking a Full Stack Software Engineer with expertise in the .NET framework and React to modernize our client's existing systems and build new features. Youll work across the development lifecycle, collaborating with a dynamic team to deliver impactful solutions. * Develop and modernize full-stack applications using .NET and React. * Build APIs, backend services, and responsive front-end applications. * Collaborate with cross-functional teams to deliver high-quality solutions. * Write clean, maintainable code and resolve technical challenges. * Experience with .NET (C# preferred) and React. * Strong understanding of relational databases (e.g., SQL Ser
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Understanding of microservices architecture & API development.
Understanding of microservices architecture & API development.
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REST API design
REST API design
Knowledge of microservices architecture & API development
Knowledge of microservices architecture & API development
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Our state-of-the-art analytical labs support drug substance (API) and drug product (finished product) analytics across all phases of clinical development and into commercial release.
Our state-of-the-art analytical labs support drug substance (API) and drug product (finished product) analytics across all phases of clinical development and into commercial release.
Extensive experience with React development, including proficiency in React Hooks and Context API.
Extensive experience with React development, including proficiency in React Hooks and Context API.
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Software Engineer in Test III (SET III)
Software Engineer in Test III (SET III)
CME Technology Support Services Ltd
Belfast, County Antrim
£ Not Disclosed
Familiarity with testing REST API's and API testing frameworks
Familiarity with testing REST API's and API testing frameworks
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Experience in API development using REST, SOAP,JSON, and XML. Strong understanding of API security, security standards, data encryption, and HSMs.
Experience in API development using REST, SOAP,JSON, and XML. Strong understanding of API security, security standards, data encryption, and HSMs.
Actively participate in development projects, constructing, REST services API, and container-based services. * Proficient in Web Services/API Development using SOAP or REST, JSON and XML. * Strong technical competency and experience with API testing, Java automation and end to end testing.
Actively participate in development projects, constructing, REST services API, and container-based services. * Proficient in Web Services/API Development using SOAP or REST, JSON and XML. * Strong technical competency and experience with API testing, Java automation and end to end testing.
Version 1 Belfast Department: Digital, Data & Cloud Job Description We are seeking an experienced Technical Lead to join our UK Digital Data & Cloud Practice. Our Digital Practice is expanding rapidly and there will be an opportunity for you to achieve medium and long-term career goals. There will be a fantastic opportunity to work on some challenging and interesting, large scale transformational and migration projects within both public and private sector. Designing, developing, testing, and maintaining cloud-based software applications. Technical leadership within a team to coordinate and deliver scalable, secure solutions in line with good industry software engineering practices (code quality, CI/CD, security etc). Working within a project management/agile delivery methodology Experience in technical ownership for a product or software solution, covering design, ..
Version 1 Belfast Department: Digital, Data & Cloud Job Description We are seeking an experienced Technical Lead to join our UK Digital Data & Cloud Practice. Our Digital Practice is expanding rapidly and there will be an opportunity for you to achieve medium and long-term career goals. There will be a fantastic opportunity to work on some challenging and interesting, large scale transformational and migration projects within both public and private sector. Designing, developing, testing, and maintaining cloud-based software applications. Technical leadership within a team to coordinate and deliver scalable, secure solutions in line with good industry software engineering practices (code quality, CI/CD, security etc). Working within a project management/agile delivery methodology Experience in technical ownership for a product or software solution, covering design, ..
Demonstrated experience of Automated Quality Assurance: Deliver overnight cross-browser, functional, non-functional, API, integration and acceptance tests.
Demonstrated experience of Automated Quality Assurance: Deliver overnight cross-browser, functional, non-functional, API, integration and acceptance tests.
Actively participate in full stack development projects, constructing real-time transactional services, REST services API, and container-based services. * Understanding and experience with building real-time transactional services, REST services API, and container-based services. * Proficient in Web Services/API Development using SOAP or REST, JSON and XML.
Actively participate in full stack development projects, constructing real-time transactional services, REST services API, and container-based services. * Understanding and experience with building real-time transactional services, REST services API, and container-based services. * Proficient in Web Services/API Development using SOAP or REST, JSON and XML.
Version 1 has celebrated over 26 years in Technology Services and continues to be trusted by global brands to deliver solutions that drive customer success. Our expertise enables our customers to navigate the rapidly changing Digital-First world we live in. We foster strong partnerships with leading technology giants including Microsoft, AWS, Oracle, Red Hat, OutSystems, and Snowflake, ensuring that our customers are provided with the highest quality solutions and services. * UK & Ireland's premier AWS, Microsoft & Oracle partner * 3400+ strong, €350/£300m revenue business * 10+ years as a Great Place to Work in Ireland & UK * Best Workplace for Women in the UK & Ireland by GPTW * Best Workplace for Wellbeing in the UK by GPTW * Were a core values driven company, we hire people who share our values, and we reward those who display and foster them, its deeply embedded
Version 1 has celebrated over 26 years in Technology Services and continues to be trusted by global brands to deliver solutions that drive customer success. Our expertise enables our customers to navigate the rapidly changing Digital-First world we live in. We foster strong partnerships with leading technology giants including Microsoft, AWS, Oracle, Red Hat, OutSystems, and Snowflake, ensuring that our customers are provided with the highest quality solutions and services. * UK & Ireland's premier AWS, Microsoft & Oracle partner * 3400+ strong, €350/£300m revenue business * 10+ years as a Great Place to Work in Ireland & UK * Best Workplace for Women in the UK & Ireland by GPTW * Best Workplace for Wellbeing in the UK by GPTW * Were a core values driven company, we hire people who share our values, and we reward those who display and foster them, its deeply embedded