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32 Permanent API jobs in Northern Ireland + 5 miles
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Integration Developer API's REST SOAP
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Experience on : SFDX,LWC, Aura, Apex, Visual Force, SOQL, SOSL, Apex Triggers, Workflows, Approvals, Email Templates, Formulas, Validation Rules, AppExchange, IDE, Data Loader, SOAP API, REST API, Bulk API, and Streaming API
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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
Secure coding and API architecture knowledge
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You'll have the opportunity to work with the latest technologies and tools, including Python Fast API, MQTT, Docker, Kubernetes and much more. Python (Fast API) * Experience designing and implementing REST APIs (Fast API)
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Mysql API Python Analytics MS Office (Excel Data Analysis
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Proven experience with API design and collaboration with backend teams
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Java Springboot api testing
Understanding of RESTful web services, API integration, and interchange formats such as JSON, XML, Avro.
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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Location: Remote (NI-based) or Belfast City Centre (Grade A office) Salary: Up to £50,000 + benefits - We're hiring a Mid-Level Python Engineer to join one of the most exciting greenfield builds in the UK & Ireland market. You'll be working within an elite engineering team headed up by two of the best technical architects in Belfast - a rare chance to accelerate your career in an environment that genuinely promotes learning, engineering best practices, and innovation. * Work remotely from anywhere in the UK or from a Grade A office space in Belfast * Build a greenfield platform on AWS from the ground up * Exposure to bleeding-edge technologies, tooling and practices * Collaborate with and learn from industry-leading architects * Opportunity to shape the direction of a brand-new product * Solid Python engineering experience (ideally 2-4 years)
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Principal Performance Test Engineer - Remote
Principal Performance Test Engineer - Remote
VANRATH
Belfast, County Antrim
£60,000 - £70,000 per annum
Principal Performance Tester - Shape & Lead Performance Engineering - We're recruiting for a Principal Performance Tester to help establish and grow a performance testing capability at a fast-scaling tech business in the payments space. You'll drive strategy, design environments, and ensure systems meet demanding performance and scalability needs. * Define and deliver performance testing strategy (load, stress, soak). * Design, build, and optimise performance test environments. * Lead performance testing across APIs, web apps, and databases. * Provide insight on risks, bottlenecks, and tuning opportunities. * Guide and mentor teams, driving best practices and a shift-left approach. * 8-10+ years' experience in performance testing enterprise systems. * Significant leadership in quality/performance engineering.
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Knowledge of secure coding practices and API architecture.
Automation Playwright Specflow API Postman
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API & Integration Experience - Experience with REST APIs, GraphQL, and microservices architectures.
Write supporting copy for GUI, API, and CLI as needed
Work closely with backend engineers and product teams to create seamless, API-driven UI workflows
Familiarity with scalable API development (REST/GraphQL)
Performance Testing Manager - Build & Shape a New Function - We're seeking an experienced Performance Testing Manager to help establish and grow a performance testing capability for a fast-growing payments technology business. This is a unique opportunity to design, implement, and build a team that will drive the company's high-growth, high-scale ambitions. * Autonomy to design performance testing strategies, environments, and tools. * A collaborative, outcome-focused culture with small teams delivering big impact. * The chance to work with modern technologies across hybrid multi-cloud and on-premise environments. * Define and deliver performance testing strategy (load, stress, soak). * Architect and build dedicated performance test environments. * Collaborate closely with engineering, DevOps, and leadership teams.
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Must be eligible for Security Clearance - A leading digital consultancy is expanding its senior Microsoft leadership team and is looking for a Principal Architect / Lead with deep expertise in the Power Platform and Dynamics 365. This is a senior-level role where you'll shape the technical direction of large-scale modernisation programmes, working closely with major organisations to transform legacy systems into secure, cloud-based solutions. Location: UK - Remote - Salary: Up to £105,000 + Benefits - What You'll Be Doing * Leading the architecture and technical strategy for enterprise-wide Power Platform and Dynamics 365 solutions. * Overseeing complex, multi-team project delivery, ensuring technical quality and governance throughout. * Acting as a trusted advisor to clients, providing strategic direction and best-practice guidance.
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New Vacancy released, exclusive to Baillie Martin IT - We are seeking to speak with detail-oriented C# / SQL Developers to join our clients rapidly expanding software development team, based out of either their Greater Ballymena or Magherafelt offices. The successful candidate will be joining the team responsible for designing, developing, and maintaining robust .NET applications and complex SQL queries, procedures, and data structures. * Design, develop, test, and maintain software applications using C# (.NET Framework/.NET Core). * Write and optimize SQL queries, stored procedures, and database structures. * Collaborate with cross-functional teams including QA, product management, and other developers. * Debug and resolve technical issues in software applications and databases. * Hands-on experience with C# development.
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RPA Developer (12 Month Fixed Term Contract)
RPA Developer (12 Month Fixed Term Contract)
MCS Group
Belfast, County Antrim
£45,000 - £50,000 per annum
RPA Specialist - Location: Belfast (Hybrid) Salary: Competitive - MCS Group is thrilled to be recruiting for an RPA Specialist to join a dynamic and forward-thinking organisation at the forefront of automation and innovation. This is a unique opportunity to work within a collaborative tech team, helping to drive automation across the business and improve operational efficiency. * Identify, assess, and deliver automation opportunities in collaboration with business stakeholders. * Analyse and optimise existing processes before automating. * Create and execute test plans for automated workflows. * Maintain, monitor, and support RPA solutions. * Communicate effectively across technical and non-technical teams. * Experience with RPA tools (e.g. Power Automate, Blue Prism, etc.). * A strong problem-solving mindset and attention to detail.
Experience of two or more of the following T-SQ, VB.net, C#.net, ASP, ASP.net , SSMS, Rest API Creation, Agile, Cyber Security Protocols.
In this role, you'll lead and scale a high-performing team of support engineers, helping developers and enterprise clients get the most from a cloud-native, API-driven platform powering CI/CD pipelines around the globe.