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        3 API jobs in County Antrim + 20 miles

        Beckend Engineer Intern - Placement Year 2026

        Proofpoint
        Belfast, County Antrim
        Competitive
        The Tessian product offers inbound threat defence software, via API, to Microsoft or Google e-mail platforms, as well as a data loss prevention (DLP) service that utilises Machine Learning for maximum protection.
        The Tessian product offers inbound threat defence software, via API, to Microsoft or Google e-mail platforms, as well as a data loss prevention (DLP) service that utilises Machine Learning for maximum protection.
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        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. Ready to make your mark? Join us and be part of something bigger. As a Senior Test Engineer (Senior Associate) in Kainos, youll work within a multi-skilled agile team, developing and executing functional automated and manual tests to help the team deliver working application software that meets user needs.
        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. Ready to make your mark? Join us and be part of something bigger. As a Senior Test Engineer (Senior Associate) in Kainos, youll work within a multi-skilled agile team, developing and executing functional automated and manual tests to help the team deliver working application software that meets user needs.
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        2 exact matches jobs are outside your preferred location

        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
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        Own end-to-end GraphQL API delivery: schema design through to production integration, focusing on performance, maintainability, security, and scalability. * Strong commercial experience delivering Federated GraphQL in production (schema-first design, supergraph/subgraph architecture, resolvers, schema governance, and API evolution). * Testing experience with modern frameworks such as Vitest and Playwright (API + end-to-end).
        Own end-to-end GraphQL API delivery: schema design through to production integration, focusing on performance, maintainability, security, and scalability. * Strong commercial experience delivering Federated GraphQL in production (schema-first design, supergraph/subgraph architecture, resolvers, schema governance, and API evolution). * Testing experience with modern frameworks such as Vitest and Playwright (API + end-to-end).
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        This job might also interest you

        Senior Software Developer

        Oscar Associates (UK) Limited
        Newcastle Upon Tyne (NE1)
        £60000 - £70000 per annum
        They are looking for a Senior Full Stack Engineer to play a key role in delivering the first iteration of a strategic cloud platform that will expand under a 'fail fast' innovation model. This is an excellent opportunity for a senior engineer who thrives in structured, security-focused environments and enjoys building clean, scalable systems from the ground up. You'll join a senior engineering team delivering a greenfield platform consisting of a .NET MAUI mobile application (iOS & Android), an Angular 21 web application, and Azure-hosted backend services built using clean architecture principles. * At least 5 years' commercial software engineering experience - Full Stack Engineer - UK (Remote) - £60k-£70k - I'm working with a UK-based organisation that is building a secure, offline-capable property visiting platform using modern Microsoft technologies. The Opportunity
        They are looking for a Senior Full Stack Engineer to play a key role in delivering the first iteration of a strategic cloud platform that will expand under a 'fail fast' innovation model. This is an excellent opportunity for a senior engineer who thrives in structured, security-focused environments and enjoys building clean, scalable systems from the ground up. You'll join a senior engineering team delivering a greenfield platform consisting of a .NET MAUI mobile application (iOS & Android), an Angular 21 web application, and Azure-hosted backend services built using clean architecture principles. * At least 5 years' commercial software engineering experience - Full Stack Engineer - UK (Remote) - £60k-£70k - I'm working with a UK-based organisation that is building a secure, offline-capable property visiting platform using modern Microsoft technologies. The Opportunity
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        Frequently Asked Questions

        How many API jobs are there in County Antrim?
        There are 3 API jobs within 20 miles of County Antrim available on JustEngineers right now.

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