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69 API jobs in County Antrim + 5 miles
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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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Secure coding and API architecture knowledge
Secure coding and API architecture knowledge
Secure coding and API architecture knowledge
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)
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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Technical Ability - Proficiency in React (including Hooks, Context API, and modern best practices). * Experience with RESTful API integration and data fetching * Experience with state management solutions (e.g., Redux, Zustand, Context API)
Technical Ability - Proficiency in React (including Hooks, Context API, and modern best practices). * Experience with RESTful API integration and data fetching * Experience with state management solutions (e.g., Redux, Zustand, Context API)
Solid understanding of secure coding practices and API architecture.
Solid understanding of secure coding practices and API architecture.
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Strong API development skills (REST and/or GraphQL)
Strong API development skills (REST and/or GraphQL)
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Mysql API Python Analytics MS Office (Excel Data Analysis
Mysql API Python Analytics MS Office (Excel Data Analysis
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Solid knowledge of SQL and API integrations
Solid knowledge of SQL and API integrations
Solid knowledge of SQL and API integrations
Solid knowledge of SQL and API integrations
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
Skilled in API design, RESTful services, and structured data workflows
Skilled in API design, RESTful services, and structured data workflows
Familiarity with RESTful API development and integration
Familiarity with RESTful API development and integration
Proven experience with API design and collaboration with backend teams
Proven experience with API design and collaboration with backend teams
Bonus: familiarity with the OpenAI API or Azure AI services * OpenAI API (bonus), Azure AI (bonus)
Bonus: familiarity with the OpenAI API or Azure AI services * OpenAI API (bonus), Azure AI (bonus)
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Java Springboot api testing
Java Springboot api testing
Java Springboot api testing
Java Springboot api testing
Senior Golang/Python Developer - 100% Remote role - Please note ideally candidates should be based in Northern Ireland. * Salary: £80,000 - circa £1200,000 + market leading package - Our client is a global software business delivering intelligent, cloud-native solutions that help organisations optimise and manage their cloud environments. With engineering teams distributed across North America, the UK, and Europe, they are now building a next-generation FinOps platform designed for scale, performance, and security. The company promotes a collaborative, remote-first culture and is investing heavily in product and engineering talent. We're looking for a Senior Backend Developer with strong hands-on experience in Golang and Python to help shape and build a new cloud-based FinOps platform. You'll work closely with product managers, frontend engineers, and SREs to deliver
Senior Golang/Python Developer - 100% Remote role - Please note ideally candidates should be based in Northern Ireland. * Salary: £80,000 - circa £1200,000 + market leading package - Our client is a global software business delivering intelligent, cloud-native solutions that help organisations optimise and manage their cloud environments. With engineering teams distributed across North America, the UK, and Europe, they are now building a next-generation FinOps platform designed for scale, performance, and security. The company promotes a collaborative, remote-first culture and is investing heavily in product and engineering talent. We're looking for a Senior Backend Developer with strong hands-on experience in Golang and Python to help shape and build a new cloud-based FinOps platform. You'll work closely with product managers, frontend engineers, and SREs to deliver
Senior Software Developer - .NET / JavaScript / AWS - Belfast, Northern Ireland (Hybrid) Permanent | 37.5 hours/week - Contact: Ryan Quinn - OCHO - Building Teams - The Company - OCHO is partnered with a boutique professional services firm based in Belfast with a reputation for helping businesses and individuals navigate financial challenges. While the organisation's core is consultancy, they've made a strategic shift towards technology-building internal tools and client-facing platforms that are central to service delivery. With leadership buy-in and a collaborative, flat team structure, you'll be part of a tight-knit environment where your decisions have real business impact. The Role - This is a hands-on Senior Software Developer position ideal for someone who thrives in full-stack .NET environments and wants to shape real-world tools used by legal and finance prof
Senior Software Developer - .NET / JavaScript / AWS - Belfast, Northern Ireland (Hybrid) Permanent | 37.5 hours/week - Contact: Ryan Quinn - OCHO - Building Teams - The Company - OCHO is partnered with a boutique professional services firm based in Belfast with a reputation for helping businesses and individuals navigate financial challenges. While the organisation's core is consultancy, they've made a strategic shift towards technology-building internal tools and client-facing platforms that are central to service delivery. With leadership buy-in and a collaborative, flat team structure, you'll be part of a tight-knit environment where your decisions have real business impact. The Role - This is a hands-on Senior Software Developer position ideal for someone who thrives in full-stack .NET environments and wants to shape real-world tools used by legal and finance prof
Job Title: Senior Software Engineer - Location: Belfast (3 days a week in office) Salary: £55,000-£65,000 depending on experience - Type: Full-time, Permanent - We're hiring for a Senior Software Engineer to join a high-performing engineering team delivering complex software solutions across a large-scale technology estate. This is a hands-on role within a collaborative Agile environment, where you'll help shape the architecture, support junior team members, and drive best practices in engineering and delivery. You'll be working across distributed systems, modern cloud platforms, and scalable backend services that underpin a critical internal and external user base. Collaborate with architecture leads and senior stakeholders to design robust, scalable software systems - Own technical delivery from design through deployment and support
Job Title: Senior Software Engineer - Location: Belfast (3 days a week in office) Salary: £55,000-£65,000 depending on experience - Type: Full-time, Permanent - We're hiring for a Senior Software Engineer to join a high-performing engineering team delivering complex software solutions across a large-scale technology estate. This is a hands-on role within a collaborative Agile environment, where you'll help shape the architecture, support junior team members, and drive best practices in engineering and delivery. You'll be working across distributed systems, modern cloud platforms, and scalable backend services that underpin a critical internal and external user base. Collaborate with architecture leads and senior stakeholders to design robust, scalable software systems - Own technical delivery from design through deployment and support
Principal Software Engineer - (Fully Remote) The Opportunity - Ocho is partnering with a fast-scaling, product-led Client to find a Principal 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 * 8+ years C# / .Net Development experience * Experience in back-end / SaaS development * Experience with SQL databases
Principal Software Engineer - (Fully Remote) The Opportunity - Ocho is partnering with a fast-scaling, product-led Client to find a Principal 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 * 8+ years C# / .Net Development experience * Experience in back-end / SaaS development * Experience with SQL databases
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)
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)
Up to £110k base + bonus | AWS | Greenfield Engineering | Optional Belfast Office - We're hiring a Principal Software Engineer to join a small, elite team building out core infrastructure for a next-gen crypto and digital asset platform. This is a hands-on leadership role focused on scalable backend systems, low-latency data flows, and secure, cloud-native architecture. You'll work remotely from anywhere in Northern Ireland, with the option to collaborate in a modern Grade A city centre office. The engineering culture is clean, pragmatic and delivery-focused - ideal for someone who enjoys solving complex problems with smart, reliable code and has a passion for shaping high-performance platforms. * Core backend services for trade execution, account management, market data, and transaction flows * Designing and building microservices and event-driven pipelines with stro
Up to £110k base + bonus | AWS | Greenfield Engineering | Optional Belfast Office - We're hiring a Principal Software Engineer to join a small, elite team building out core infrastructure for a next-gen crypto and digital asset platform. This is a hands-on leadership role focused on scalable backend systems, low-latency data flows, and secure, cloud-native architecture. You'll work remotely from anywhere in Northern Ireland, with the option to collaborate in a modern Grade A city centre office. The engineering culture is clean, pragmatic and delivery-focused - ideal for someone who enjoys solving complex problems with smart, reliable code and has a passion for shaping high-performance platforms. * Core backend services for trade execution, account management, market data, and transaction flows * Designing and building microservices and event-driven pipelines with stro
The Opportunity - Ocho is partnering with a fast-growing, product-led client to hire a Principal Software Engineer to help shape and deliver the next generation of their platform. This is a hands-on role focused on designing, building, and scaling modern backend systems in a fully remote environment. Key Responsibilities * Own and deliver high-quality, testable backend services and APIs * Collaborate across teams to support CI/CD, planning, and deployments * Improve tooling, architecture, and engineering practices - Essential Experience * 8+ years' experience with C# and .NET * Strong background in backend/SaaS development * Proficient with SQL databases * Excellent communicator and problem-solver - What's on offer? * Competitive salary + annual bonus * Fully remote working * Industry-leading benefits package - To apply, connect with Neill Ferguson on LinkedIn or subm
The Opportunity - Ocho is partnering with a fast-growing, product-led client to hire a Principal Software Engineer to help shape and deliver the next generation of their platform. This is a hands-on role focused on designing, building, and scaling modern backend systems in a fully remote environment. Key Responsibilities * Own and deliver high-quality, testable backend services and APIs * Collaborate across teams to support CI/CD, planning, and deployments * Improve tooling, architecture, and engineering practices - Essential Experience * 8+ years' experience with C# and .NET * Strong background in backend/SaaS development * Proficient with SQL databases * Excellent communicator and problem-solver - What's on offer? * Competitive salary + annual bonus * Fully remote working * Industry-leading benefits package - To apply, connect with Neill Ferguson on LinkedIn or subm