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        See all jobs in Belfast

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        20 API jobs in Belfast + 20 miles

        Lead NodeJS Engineer

        IO Associates
        Belfast, County Antrim
        £75000 - £90000 per annum
        Title: Lead Backend Engineer (Nodejs) Salary: Up to £90,000 D.O.E - Location: Belfast (2 days on site) Are you a Lead Engineer ready to take on more technical leadership and help shape the future of AI-driven software? if so... iO Associates is exclusively working with a rapidly scaling AI consultancy headquartered in Belfast that's building secure, high-performance solutions for clients across government, defence, and industry. They're at the forefront of AI innovation, developing platforms that bring trusted, explainable AI into real-world, mission-critical environments. They're now looking for a Lead Backend Engineer to head up a small, high-performing team, setting standards, driving design decisions, and mentoring others, while staying hands-on with development. What You'll Be Doing * Lead and mentor a talented backend team, setting coding and design standards.
        Title: Lead Backend Engineer (Nodejs) Salary: Up to £90,000 D.O.E - Location: Belfast (2 days on site) Are you a Lead Engineer ready to take on more technical leadership and help shape the future of AI-driven software? if so... iO Associates is exclusively working with a rapidly scaling AI consultancy headquartered in Belfast that's building secure, high-performance solutions for clients across government, defence, and industry. They're at the forefront of AI innovation, developing platforms that bring trusted, explainable AI into real-world, mission-critical environments. They're now looking for a Lead Backend Engineer to head up a small, high-performing team, setting standards, driving design decisions, and mentoring others, while staying hands-on with development. What You'll Be Doing * Lead and mentor a talented backend team, setting coding and design standards.
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        NEWFEATURED
        As a leader in cybersecurity, Rapid7 is expanding our global AI footprint and is looking for a passionate Senior AI Engineer to join Rapid7s AI Centre of Excellence. The AI centre of excellence is on a mission to use AI to accelerate threat investigation, detection and response (D&R) capabilities of our Security Operations Centre (SOC) for both conventional networks and cloud environments. You should be ready to design and deliver solutions that address complex, unsolved challenges, working closely with development teams, data engineering, product managers and UI/UX teams along the way. About the Team - The AI Center of Excellence team designs, prototypes and ships production AI models and systems. Our mission is to leverage the best available technology to protect our customers' attack surfaces.
        As a leader in cybersecurity, Rapid7 is expanding our global AI footprint and is looking for a passionate Senior AI Engineer to join Rapid7s AI Centre of Excellence. The AI centre of excellence is on a mission to use AI to accelerate threat investigation, detection and response (D&R) capabilities of our Security Operations Centre (SOC) for both conventional networks and cloud environments. You should be ready to design and deliver solutions that address complex, unsolved challenges, working closely with development teams, data engineering, product managers and UI/UX teams along the way. About the Team - The AI Center of Excellence team designs, prototypes and ships production AI models and systems. Our mission is to leverage the best available technology to protect our customers' attack surfaces.
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        NEW

        Technical Architect

        Inspire People
        BT1, Belfast
        £67867 - £81793 per annum + 29% pension + Civil Service benefits
        Track record designing and delivering secure cloud solutions using AWS/Azure plus ideally API-driven architecture
        Track record designing and delivering secure cloud solutions using AWS/Azure plus ideally API-driven architecture
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        Migrate and refactor legacy APIs to modern architectural standards whilst ensuring API contract compatibility * Understanding of RESTful API design, microservices architecture and cloud-native development
        Migrate and refactor legacy APIs to modern architectural standards whilst ensuring API contract compatibility * Understanding of RESTful API design, microservices architecture and cloud-native development
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        Validate API integrations, security implementations and accessibility standards (WCAG 2.1) * Experience with API testing, mobile application testing and cross-platform validation
        Validate API integrations, security implementations and accessibility standards (WCAG 2.1) * Experience with API testing, mobile application testing and cross-platform validation
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        Proficiency in React Native, JavaScript/TypeScript and React fundamentals * Solid understanding of REST API integration, asynchronous programming and cross-platform development
        Proficiency in React Native, JavaScript/TypeScript and React fundamentals * Solid understanding of REST API integration, asynchronous programming and cross-platform development
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        Validate API integrations, security implementations and Strong Customer Authentication (SCA) flows * Deep understanding of mobile testing (iOS and Android), API testing and cross-platform validation
        Validate API integrations, security implementations and Strong Customer Authentication (SCA) flows * Deep understanding of mobile testing (iOS and Android), API testing and cross-platform validation
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        Build services with an API driven approach to enable seamless integration of network tools with various other network related services and enable easy consumption of network tools services to other teams. Can do attitude and think out of the box approach, be innovative Ability to build API based services and common network libraries/framework
        Build services with an API driven approach to enable seamless integration of network tools with various other network related services and enable easy consumption of network tools services to other teams. Can do attitude and think out of the box approach, be innovative Ability to build API based services and common network libraries/framework
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        Integration & Extensibility - Connect solutions to Microsoft 365, Dynamics 365 Customer Engagement, Azure services (Functions, Logic Apps, API Management), and external systems using standard connectors and custom connectors/APIs. * Integration : Hands-on with Microsoft 365, Dynamics 365 CE, Azure integration patterns (HTTP, queues, webhooks), and API design/consumption.
        Integration & Extensibility - Connect solutions to Microsoft 365, Dynamics 365 Customer Engagement, Azure services (Functions, Logic Apps, API Management), and external systems using standard connectors and custom connectors/APIs. * Integration : Hands-on with Microsoft 365, Dynamics 365 CE, Azure integration patterns (HTTP, queues, webhooks), and API design/consumption.
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        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
        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
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        CME Technology and Support Services is relentlessly focused on developing the worlds most advanced electronic trading, post trade processing and risk management systems. We are the worlds leading and most diverse derivatives marketplace, providing risk management solutions that help drive the global economy. Our customers include leading investment and commercial banks, hedge funds, proprietary trading firms, pension funds, sovereign wealth funds, asset managers, corporations, and individual traders. The selected candidate will join the Data Services Domain within Technology in Belfast as a Senior Software Engineer. You will be part of the Market Data Core APIs and Processing team. This role will be instrumental in designing, developing, and maintaining the systems and tools used for the accurate calculation and dissemination of CME Group's proprietary market data ...
        CME Technology and Support Services is relentlessly focused on developing the worlds most advanced electronic trading, post trade processing and risk management systems. We are the worlds leading and most diverse derivatives marketplace, providing risk management solutions that help drive the global economy. Our customers include leading investment and commercial banks, hedge funds, proprietary trading firms, pension funds, sovereign wealth funds, asset managers, corporations, and individual traders. The selected candidate will join the Data Services Domain within Technology in Belfast as a Senior Software Engineer. You will be part of the Market Data Core APIs and Processing team. This role will be instrumental in designing, developing, and maintaining the systems and tools used for the accurate calculation and dissemination of CME Group's proprietary market data ...
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        Technology Solutions Analyst (IT Business Analyst) The CME markets technology portfolio seeks a Technology Solutions Analyst to join the global solutions and architecture team. This role is vital for providing the technical analysis necessary to drive the evolution and growth of CMEs core trade execution and post trade systems. These systems power major electronic trading platforms across Futures & Options, EBS and BTEC markets. The mission of the team is to continuously deliver new features while maintaining systems that are both low latency and demonstrate high reliability. This role will involve working closely with Product Owners, Scrum Masters, Development, Testing and Architecture stakeholders to provide creative solutions that meet the functional business needs whilst strictly maintaining the required performance profile, along with other non-functional require
        Technology Solutions Analyst (IT Business Analyst) The CME markets technology portfolio seeks a Technology Solutions Analyst to join the global solutions and architecture team. This role is vital for providing the technical analysis necessary to drive the evolution and growth of CMEs core trade execution and post trade systems. These systems power major electronic trading platforms across Futures & Options, EBS and BTEC markets. The mission of the team is to continuously deliver new features while maintaining systems that are both low latency and demonstrate high reliability. This role will involve working closely with Product Owners, Scrum Masters, Development, Testing and Architecture stakeholders to provide creative solutions that meet the functional business needs whilst strictly maintaining the required performance profile, along with other non-functional require
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        Sr Software Engineer - BETS - CME Technology and Support Services is relentlessly focused on developing the worlds most advanced electronic trading, post trade processing and risk management systems. We are the worlds leading and most diverse derivatives market place providing risk management solutions that help drive the global economy. Our customers include leading investment and commercial banks, hedge funds, proprietary trading firms, pension funds, sovereign wealth funds, asset managers, corporations, and individual traders. The selected candidate will join the CME Engineering and Execution team in Belfast, as a Senior Software Engineer on the BrokerTec Back End Trading Services Team. The Belfast team is a high performing group of individuals that deliver on a broad range of functions including systems/business analysis, software development and quality assurance
        Sr Software Engineer - BETS - CME Technology and Support Services is relentlessly focused on developing the worlds most advanced electronic trading, post trade processing and risk management systems. We are the worlds leading and most diverse derivatives market place providing risk management solutions that help drive the global economy. Our customers include leading investment and commercial banks, hedge funds, proprietary trading firms, pension funds, sovereign wealth funds, asset managers, corporations, and individual traders. The selected candidate will join the CME Engineering and Execution team in Belfast, as a Senior Software Engineer on the BrokerTec Back End Trading Services Team. The Belfast team is a high performing group of individuals that deliver on a broad range of functions including systems/business analysis, software development and quality assurance
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        As we embark on a journey to transform the Network Services Group in CME, we are seeking a Site Reliability Engineer II to join our dynamic team. In this role, you will design, develop and maintain self-service tools and applications that enhance productivity and reduce operational costs. You will work across the full stackboth front-end and back-endto architect microservices (GKE) in Google Cloud Platform (GCP), driving our infrastructure towards greater automation and reliability. We are a global team across US, UK, India and Singapore made up of a diverse range of people from varied backgrounds who each bring unique network experiences and skill sets. The relatively new Network Reliability/Automation team are responsible for building a suite of custom automation tools and developing our self-healing capabilities while working closely with other members of the Netwo
        As we embark on a journey to transform the Network Services Group in CME, we are seeking a Site Reliability Engineer II to join our dynamic team. In this role, you will design, develop and maintain self-service tools and applications that enhance productivity and reduce operational costs. You will work across the full stackboth front-end and back-endto architect microservices (GKE) in Google Cloud Platform (GCP), driving our infrastructure towards greater automation and reliability. We are a global team across US, UK, India and Singapore made up of a diverse range of people from varied backgrounds who each bring unique network experiences and skill sets. The relatively new Network Reliability/Automation team are responsible for building a suite of custom automation tools and developing our self-healing capabilities while working closely with other members of the Netwo
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        Systems Engineer

        Options Technology Ltd.
        Belfast, County Antrim
        Competitive
        Location: Belfast - Salary: Competitive - Join our team of expert engineers in the Engineering Team! Who are we? Options is the largest global financial technology company headquartered in Belfast. We are at the forefront of banking and trading infrastructure, serving clients globally with offices in New York, Chicago, Toronto, London, Cambridge, Paris, Hong Kong, Tokyo, Singapore, and Auckland. At Options, our services are woven into the hottest trends in global tech, including high-performance Networking, Cloud, Security, and AI (Artificial Intelligence). Why Options? Global travel: We have offices in New York, Chicago, Toronto, London, Belfast, Dublin and across Asia. Continuous career development opportunities: We provide professional skills development and technical training. The chance to be a part of a self-sufficient, successful team: The Options team operates
        Location: Belfast - Salary: Competitive - Join our team of expert engineers in the Engineering Team! Who are we? Options is the largest global financial technology company headquartered in Belfast. We are at the forefront of banking and trading infrastructure, serving clients globally with offices in New York, Chicago, Toronto, London, Cambridge, Paris, Hong Kong, Tokyo, Singapore, and Auckland. At Options, our services are woven into the hottest trends in global tech, including high-performance Networking, Cloud, Security, and AI (Artificial Intelligence). Why Options? Global travel: We have offices in New York, Chicago, Toronto, London, Belfast, Dublin and across Asia. Continuous career development opportunities: We provide professional skills development and technical training. The chance to be a part of a self-sufficient, successful team: The Options team operates
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        129 exact matches jobs are outside your preferred location

        For more information on this exciting opportunity, please follow the link below; Analytical Technical Leader will have the opportunity to work on a diverse range of projects, ranging from early phase clinical studies to commercial readiness for API small molecules up to larger complex molecules and across a wide range of therapeutic indications.
        For more information on this exciting opportunity, please follow the link below; Analytical Technical Leader will have the opportunity to work on a diverse range of projects, ranging from early phase clinical studies to commercial readiness for API small molecules up to larger complex molecules and across a wide range of therapeutic indications.
        more
        NEW
        Migrate and refactor legacy APIs to modern architectural standards whilst ensuring API contract compatibility * Understanding of RESTful API design, microservices architecture and cloud-native development
        Migrate and refactor legacy APIs to modern architectural standards whilst ensuring API contract compatibility * Understanding of RESTful API design, microservices architecture and cloud-native development
        more

        Senior Software Developer

        Hannon Transport Ltd
        Craigavon, County Armagh
        £55,000 - £65,000 a year
        Lead the strategic integration of business systems through robust API and data interface solutions, enabling cross-functional connectivity and operational efficiency
        Lead the strategic integration of business systems through robust API and data interface solutions, enabling cross-functional connectivity and operational efficiency
        more
        Proficiency in React Native, JavaScript/TypeScript and React fundamentals * Solid understanding of REST API integration, asynchronous programming and cross-platform development
        Proficiency in React Native, JavaScript/TypeScript and React fundamentals * Solid understanding of REST API integration, asynchronous programming and cross-platform development
        more
        Validate API integrations, security implementations and Strong Customer Authentication (SCA) flows * Deep understanding of mobile testing (iOS and Android), API testing and cross-platform validation
        Validate API integrations, security implementations and Strong Customer Authentication (SCA) flows * Deep understanding of mobile testing (iOS and Android), API testing and cross-platform validation
        more

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        Frequently Asked Questions

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

        What other similar jobs are there to API jobs in Belfast?
        As well as API jobs in Belfast, you can find Aws, Business Analyst, Cyber Security, amongst many others.