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64 API jobs in County Down + 5 miles
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Integration Developer API's REST SOAP
Integration Developer API's REST SOAP
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Experience with AWS (AWS Lambda, AWS Fargate, Amazon API Gateway, AWS AppSync)
Experience with AWS (AWS Lambda, AWS Fargate, Amazon API Gateway, AWS AppSync)
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Secure coding and API architecture knowledge
Secure coding and API architecture knowledge
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Company description - We believe in the power of ingenuity to build a positive human future. As strategies, technologies, and innovation collide, we create opportunity from complexity. Our teams of interdisciplinary experts combine innovative thinking and breakthrough technologies to progress further, faster. Our clients adapt and transform, and together we achieve enduring results. We are over 4,000 strategists, innovators, designers, consultants, digital experts, scientists, engineers, and technologists. And we have deep expertise in consumer and manufacturing, defence and security, energy and utilities, financial services, government and public services, health and life sciences, and transport. Our teams operate globally from offices across the UK, Ireland, US, Nordics, and Netherlands. Bringing Ingenuity to Life. Job description
Company description - We believe in the power of ingenuity to build a positive human future. As strategies, technologies, and innovation collide, we create opportunity from complexity. Our teams of interdisciplinary experts combine innovative thinking and breakthrough technologies to progress further, faster. Our clients adapt and transform, and together we achieve enduring results. We are over 4,000 strategists, innovators, designers, consultants, digital experts, scientists, engineers, and technologists. And we have deep expertise in consumer and manufacturing, defence and security, energy and utilities, financial services, government and public services, health and life sciences, and transport. Our teams operate globally from offices across the UK, Ireland, US, Nordics, and Netherlands. Bringing Ingenuity to Life. Job description
NEWFEATURED
Company description - We believe in the power of ingenuity to build a positive human future. As strategies, technologies, and innovation collide, we create opportunity from complexity. Our teams of interdisciplinary experts combine innovative thinking and breakthrough technologies to progress further, faster. Our clients adapt and transform, and together we achieve enduring results. We are over 4,000 strategists, innovators, designers, consultants, digital experts, scientists, engineers, and technologists. And we have deep expertise in consumer and manufacturing, defence and security, energy and utilities, financial services, government and public services, health and life sciences, and transport. Our teams operate globally from offices across the UK, Ireland, US, Nordics, and Netherlands. Bringing Ingenuity to Life. Job description
Company description - We believe in the power of ingenuity to build a positive human future. As strategies, technologies, and innovation collide, we create opportunity from complexity. Our teams of interdisciplinary experts combine innovative thinking and breakthrough technologies to progress further, faster. Our clients adapt and transform, and together we achieve enduring results. We are over 4,000 strategists, innovators, designers, consultants, digital experts, scientists, engineers, and technologists. And we have deep expertise in consumer and manufacturing, defence and security, energy and utilities, financial services, government and public services, health and life sciences, and transport. Our teams operate globally from offices across the UK, Ireland, US, Nordics, and Netherlands. Bringing Ingenuity to Life. Job description
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Extensive experience in enterprise-level Java development with deep REST API and microservice expertise.
Extensive experience in enterprise-level Java development with deep REST API and microservice expertise.
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Extensive experience in enterprise-level Java development with deep REST API and microservice expertise.
Extensive experience in enterprise-level Java development with deep REST API and microservice expertise.
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Commercial experience delivering applications in .NET Core (C#), including experience with Entity Framework and Web API
Commercial experience delivering applications in .NET Core (C#), including experience with Entity Framework and Web API
Proven experience with API design and collaboration with backend teams
Proven experience with API design and collaboration with backend teams
Senior Software Developer - Lisburn (Hybrid / On-Site) Location: Lisburn, Northern Ireland - Contract: Permanent | Full-Time | 37.5 hrs/week - Work Setup: Hybrid / On-site - We're looking for a Senior Software Developer to join a small, agile team delivering business-critical software solutions. This is a hands-on full-stack role with a strong emphasis on the .NET ecosystem. You'll work closely with senior stakeholders, influence architectural and tooling decisions, and play a key role in both maintaining core systems and developing new product features. * Develop and maintain internal and client-facing applications using C#, .NET, Angular, and related technologies * Lead the delivery of new features, applying modern DevOps practices including Docker, AWS ECS, and CI/CD pipelines * Refactor and optimise legacy systems to improve performance, scalability, and maintaina
Senior Software Developer - Lisburn (Hybrid / On-Site) Location: Lisburn, Northern Ireland - Contract: Permanent | Full-Time | 37.5 hrs/week - Work Setup: Hybrid / On-site - We're looking for a Senior Software Developer to join a small, agile team delivering business-critical software solutions. This is a hands-on full-stack role with a strong emphasis on the .NET ecosystem. You'll work closely with senior stakeholders, influence architectural and tooling decisions, and play a key role in both maintaining core systems and developing new product features. * Develop and maintain internal and client-facing applications using C#, .NET, Angular, and related technologies * Lead the delivery of new features, applying modern DevOps practices including Docker, AWS ECS, and CI/CD pipelines * Refactor and optimise legacy systems to improve performance, scalability, and maintaina
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Malware Analyst / Reverse Engineer (Hybrid)
Malware Analyst / Reverse Engineer (Hybrid)
Allstate Northern Ireland
Belfast, County Antrim
£50,000 - £70,000 per annum
At Allstate, great things happen when our people work together to protect families and their belongings from lifes uncertainties. And for more than 90 years our innovative drive has kept us a step ahead of our customers evolving needs. From advocating for seat belts, air bags and graduated driving laws, to being an industry leader in pricing sophistication, telematics, and, more recently, device and identity protection. Your role in the team - The Allstate Information Security (AIS) department is responsible for managing cyber security at Allstate. This includes Governance/Risk/Compliance, Access Management, Network Security, and Threat Response Services. The department is responsible for ensuring confidentiality, integrity, and availability of Allstate systems. We are seeking an experienced Malware Analyst/Reverse Engineer to perform malware analysis and reverse engi
At Allstate, great things happen when our people work together to protect families and their belongings from lifes uncertainties. And for more than 90 years our innovative drive has kept us a step ahead of our customers evolving needs. From advocating for seat belts, air bags and graduated driving laws, to being an industry leader in pricing sophistication, telematics, and, more recently, device and identity protection. Your role in the team - The Allstate Information Security (AIS) department is responsible for managing cyber security at Allstate. This includes Governance/Risk/Compliance, Access Management, Network Security, and Threat Response Services. The department is responsible for ensuring confidentiality, integrity, and availability of Allstate systems. We are seeking an experienced Malware Analyst/Reverse Engineer to perform malware analysis and reverse engi
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IT Business Analyst (Technology Solution Analyst)
IT Business Analyst (Technology Solution Analyst)
CME Technology Support Services Ltd
Belfast, County Antrim
£ Not Disclosed
The CME Markets Technology team is looking for a Technology Solution Analyst to join the global Technology solutions and architecture team. The team is responsible for providing technical analysis that drives the evolution and growth of CME's core trade execution systems that power our electronic trading platforms CME Globex, EBS Direct and BrokerTec Stream. Our systems need to be both low latency and have high reliability while continuously delivering new features. The role will initially be focused on CME's Trade Dissemination and related systems, working in concert with the business, operations, development, and testing teams to provide creative solutions that meet the needs of our business and maintain our performance profile. This role may be suitable for an experienced Technical Analyst who has been working in a Quality Assurance role and is considering a move i
The CME Markets Technology team is looking for a Technology Solution Analyst to join the global Technology solutions and architecture team. The team is responsible for providing technical analysis that drives the evolution and growth of CME's core trade execution systems that power our electronic trading platforms CME Globex, EBS Direct and BrokerTec Stream. Our systems need to be both low latency and have high reliability while continuously delivering new features. The role will initially be focused on CME's Trade Dissemination and related systems, working in concert with the business, operations, development, and testing teams to provide creative solutions that meet the needs of our business and maintain our performance profile. This role may be suitable for an experienced Technical Analyst who has been working in a Quality Assurance role and is considering a move i
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Job Title: Digital Senior Consultant - Location: Belfast, Hybrid - OutForm Consulting is a dynamic consulting team focused on delivering business - performance improvements, sustainable results, and creating an environment for our team and our clients to Thrive. We are passionate about building long-lasting relationships with our clients and our team. As a Digital Senior Consultant, you will lead digital consulting engagements for our clients, contributing to the development of client relationships and shaping the future direction of OutForm. * Lead business improvement consulting engagements for clients. * Shape and implement complex business change and transformational programs. * Effectively lead and manage sub-workstreams and collaborate with senior stakeholders. * Contribute to business development activities, supporting referrals and new business opportunities.
Job Title: Digital Senior Consultant - Location: Belfast, Hybrid - OutForm Consulting is a dynamic consulting team focused on delivering business - performance improvements, sustainable results, and creating an environment for our team and our clients to Thrive. We are passionate about building long-lasting relationships with our clients and our team. As a Digital Senior Consultant, you will lead digital consulting engagements for our clients, contributing to the development of client relationships and shaping the future direction of OutForm. * Lead business improvement consulting engagements for clients. * Shape and implement complex business change and transformational programs. * Effectively lead and manage sub-workstreams and collaborate with senior stakeholders. * Contribute to business development activities, supporting referrals and new business opportunities.
Location: Hybrid (Belfast-based) Employment Type: Full-time - Compensation: Excellent Salary + Bonus + Incredible Benefits - About the Opportunity - Are you ready to shape the future of AI and next-generation fintech? VANRATH is thrilled to partner with one of the world's most influential payments and technology companies to recruit a Software Lead / Senior Software Engineer for its elite Belfast-based team. This is your chance to work on a truly global scale, with technology trusted by household names like Apple, Nike, FedEx, and Facebook. You'll be instrumental in developing next-gen solutions in fraud detection, real-time transaction processing, and AI-driven innovation - all within a collaborative environment that values talent, impact, and technical excellence. Why This Role? * High-scale, high-availability engineering at its best
Location: Hybrid (Belfast-based) Employment Type: Full-time - Compensation: Excellent Salary + Bonus + Incredible Benefits - About the Opportunity - Are you ready to shape the future of AI and next-generation fintech? VANRATH is thrilled to partner with one of the world's most influential payments and technology companies to recruit a Software Lead / Senior Software Engineer for its elite Belfast-based team. This is your chance to work on a truly global scale, with technology trusted by household names like Apple, Nike, FedEx, and Facebook. You'll be instrumental in developing next-gen solutions in fraud detection, real-time transaction processing, and AI-driven innovation - all within a collaborative environment that values talent, impact, and technical excellence. Why This Role? * High-scale, high-availability engineering at its best
MCS Group is working with a very exciting, growing Insurtech company who are expanding their development team. They're seeking an experienced Senior Software Engineer to lead the delivery of innovative, scalable, and secure features across their growing suite of Insurtech products. Reporting to the Principal Software Engineer, you'll play a pivotal role in designing distributed systems, guiding developers, and ensuring engineering excellence across every sprint. You'll collaborate closely with cross-functional teams to translate product requirements into world-class technical solutions that deliver real value. With significant investment on board recently and new products in the pipeline, this is the perfect opportunity for an ambitious .NET developer. Key Responsibilities * Collaborate on sprint planning, workload estimation, and technical specification authoring.
MCS Group is working with a very exciting, growing Insurtech company who are expanding their development team. They're seeking an experienced Senior Software Engineer to lead the delivery of innovative, scalable, and secure features across their growing suite of Insurtech products. Reporting to the Principal Software Engineer, you'll play a pivotal role in designing distributed systems, guiding developers, and ensuring engineering excellence across every sprint. You'll collaborate closely with cross-functional teams to translate product requirements into world-class technical solutions that deliver real value. With significant investment on board recently and new products in the pipeline, this is the perfect opportunity for an ambitious .NET developer. Key Responsibilities * Collaborate on sprint planning, workload estimation, and technical specification authoring.
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Intermediate Software Engineer - C#/.Net (Remote)
Intermediate Software Engineer - C#/.Net (Remote)
Ocho
Belfast, County Antrim
£40,000 - £50,000 per annum
The Opportunity - Ocho is partnering with a fast-scaling, product-led Client to find a Software Engineer to help lead the design and evolution of their new platform. You'll help design, build, and deploy the next generation of back-end systems that power their modern software ecosystem. Key Responsibilities * Collaborate closely with team members to deliver high-quality, testable, and valuable software * Take ownership of back-end services and APIs, with a focus on user-visible behaviour * Participate in deployments, support CI/CD pipelines, and assist with planning and delivery * Contribute ideas for improving processes, tooling, and architecture - Essential Experience * 3+ years .Net experience * Experience in server-side development * Familiarity with full-stack development and database systems * Strong communication and problem-solving skills - What you'll get?
The Opportunity - Ocho is partnering with a fast-scaling, product-led Client to find a Software Engineer to help lead the design and evolution of their new platform. You'll help design, build, and deploy the next generation of back-end systems that power their modern software ecosystem. Key Responsibilities * Collaborate closely with team members to deliver high-quality, testable, and valuable software * Take ownership of back-end services and APIs, with a focus on user-visible behaviour * Participate in deployments, support CI/CD pipelines, and assist with planning and delivery * Contribute ideas for improving processes, tooling, and architecture - Essential Experience * 3+ years .Net experience * Experience in server-side development * Familiarity with full-stack development and database systems * Strong communication and problem-solving skills - What you'll get?
MCS Group is delighted to be exclusively partnering once again with a well-established, growing tech company in Belfast. After successfully placing their last two hires, we're excited to bring another fantastic opportunity to market-this time for a Software Developer looking to take the next step in their career. This company combines innovation with purpose, creating solutions that genuinely make a difference in people's lives. As they continue to grow, they're now seeking a motivated developer who's keen to work across both frontend and backend technologies and become part of a growing team. The Role - You'll join a cross-functional product team working in an agile environment where you'll contribute to the development and enhancement of meaningful applications. From day one, you'll be writing clean, maintainable code, taking part in code reviews, solving real-world
MCS Group is delighted to be exclusively partnering once again with a well-established, growing tech company in Belfast. After successfully placing their last two hires, we're excited to bring another fantastic opportunity to market-this time for a Software Developer looking to take the next step in their career. This company combines innovation with purpose, creating solutions that genuinely make a difference in people's lives. As they continue to grow, they're now seeking a motivated developer who's keen to work across both frontend and backend technologies and become part of a growing team. The Role - You'll join a cross-functional product team working in an agile environment where you'll contribute to the development and enhancement of meaningful applications. From day one, you'll be writing clean, maintainable code, taking part in code reviews, solving real-world
Senior Java Engineer - Belfast (Hybrid) Up to £80,000 + Exceptional Benefits | Backend Java | Global Impact | Flexible Working - MCS are delighted to be partnering with a forward-thinking global tech leader. This company is hiring for a Senior Software Engineer to join a highly collaborative engineering team tackling critical backend challenges. This is your chance to work on services used by some of the most recognisable global brands. What You'll Be Doing * Designing and implementing backend microservices using Java and Spring Boot * Building and refining RESTful APIs that power secure, real-time payment flows * Writing clean, testable code with a focus on quality, performance, and reliability * Leading on feature analysis, architecture decisions, and release planning * Contributing to peer reviews, automated testing, and continuous integration * Mentoring Junior De
Senior Java Engineer - Belfast (Hybrid) Up to £80,000 + Exceptional Benefits | Backend Java | Global Impact | Flexible Working - MCS are delighted to be partnering with a forward-thinking global tech leader. This company is hiring for a Senior Software Engineer to join a highly collaborative engineering team tackling critical backend challenges. This is your chance to work on services used by some of the most recognisable global brands. What You'll Be Doing * Designing and implementing backend microservices using Java and Spring Boot * Building and refining RESTful APIs that power secure, real-time payment flows * Writing clean, testable code with a focus on quality, performance, and reliability * Leading on feature analysis, architecture decisions, and release planning * Contributing to peer reviews, automated testing, and continuous integration * Mentoring Junior De
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Senior Java Engineer - Belfast (Hybrid) Up to £80,000 + Exceptional Benefits | Backend Java | Global Impact | Flexible Working - MCS are delighted to be partnering with a forward-thinking global tech leader. This company is hiring for a Senior Software Engineer to join a highly collaborative engineering team tackling critical backend challenges. This is your chance to work on services used by some of the most recognisable global brands. What You'll Be Doing * Designing and implementing backend microservices using Java and Spring Boot * Building and refining RESTful APIs that power secure, real-time payment flows * Writing clean, testable code with a focus on quality, performance, and reliability * Leading on feature analysis, architecture decisions, and release planning * Contributing to peer reviews, automated testing, and continuous integration * Mentoring Junior De
Senior Java Engineer - Belfast (Hybrid) Up to £80,000 + Exceptional Benefits | Backend Java | Global Impact | Flexible Working - MCS are delighted to be partnering with a forward-thinking global tech leader. This company is hiring for a Senior Software Engineer to join a highly collaborative engineering team tackling critical backend challenges. This is your chance to work on services used by some of the most recognisable global brands. What You'll Be Doing * Designing and implementing backend microservices using Java and Spring Boot * Building and refining RESTful APIs that power secure, real-time payment flows * Writing clean, testable code with a focus on quality, performance, and reliability * Leading on feature analysis, architecture decisions, and release planning * Contributing to peer reviews, automated testing, and continuous integration * Mentoring Junior De
Software Engineer - Java | Cloud Security | Are you a Java backend engineer looking to build cutting-edge cloud security solutions trusted by global organisations like NASA? This is your chance to work with a fast-growing company in the Cloud Native Application Protection Platform (CNAPP) space, delivering real-time insights to secure complex cloud infrastructure. What's in it for you? * Salary: £80-120k * Hybrid working: 3 days per week in the office * Tech stack: Java (primary language), Spring Boot, AWS * Work on mission-critical cloud security products trusted by NASA * Solve high-scale backend engineering challenges in a modern, cloud-native environment * Join a highly skilled team working on meaningful, impactful projects - The Role * Take ownership of the full development lifecycle: design, development, deployment and monitoring
Software Engineer - Java | Cloud Security | Are you a Java backend engineer looking to build cutting-edge cloud security solutions trusted by global organisations like NASA? This is your chance to work with a fast-growing company in the Cloud Native Application Protection Platform (CNAPP) space, delivering real-time insights to secure complex cloud infrastructure. What's in it for you? * Salary: £80-120k * Hybrid working: 3 days per week in the office * Tech stack: Java (primary language), Spring Boot, AWS * Work on mission-critical cloud security products trusted by NASA * Solve high-scale backend engineering challenges in a modern, cloud-native environment * Join a highly skilled team working on meaningful, impactful projects - The Role * Take ownership of the full development lifecycle: design, development, deployment and monitoring
Write supporting copy for GUI, API, and CLI as needed
Write supporting copy for GUI, API, and CLI as needed
Working exclusively on frontend engineering (no backend work) while defining API schemas.
Working exclusively on frontend engineering (no backend work) while defining API schemas.
Knowledge of secure coding practices and API architecture.
Knowledge of secure coding practices and API architecture.
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Multiple Software Engineers - .Net (Mid - Senior Level)
Multiple Software Engineers - .Net (Mid - Senior Level)
VANRATH
Belfast, County Antrim
£40,000 - £65,000 per annum
Secure coding and API architecture knowledge
Secure coding and API architecture knowledge
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Contract Java Developer Financial Services 6 Months?? Location: UK-based, hybrid?? Rate: £400/day (Outside IR35)?? Length: 6 Months - Possibility of extension We're hiring a Java Developer for a leading financial services client. You'll work on backend systems in a fast-paced environment, writing clean, scalable code. Skills Required * Strong Java (11+) experience * Some Python exposure * Spring Boot, REST APIs, microservices * Git, CI/CD, testing * Financial services experience (desirable) Start ASAP apply now. Java Python Financial Services DevOps
Contract Java Developer Financial Services 6 Months?? Location: UK-based, hybrid?? Rate: £400/day (Outside IR35)?? Length: 6 Months - Possibility of extension We're hiring a Java Developer for a leading financial services client. You'll work on backend systems in a fast-paced environment, writing clean, scalable code. Skills Required * Strong Java (11+) experience * Some Python exposure * Spring Boot, REST APIs, microservices * Git, CI/CD, testing * Financial services experience (desirable) Start ASAP apply now. Java Python Financial Services DevOps
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