Top Software Engineer Jobs in Belfast

Develop and lead scalable backend systems, integrations, and cloud-based applications for commercial planning. Provide technical guidance, conduct code reviews, champion testing and DevSecOps, and drive observability and incident management. Partner with stakeholders and architecture teams, mentor engineers, and contribute to engineering strategy, transformation programs, and innovative AI-enabled development practices.

Lead development of Runware’s AI platform, including scalable backend APIs, SDKs, developer tools, and inference orchestration systems. Design high-performance distributed architectures, optimize image and video model integrations, improve reliability and observability, shape technical direction, and mentor engineers. Collaborate across platform, infrastructure, and product teams to deliver robust developer experiences and maintainable systems.

Lead the development, testing, debugging, and technical design of scalable backend systems, integrations, and cloud applications. Establish engineering standards through code reviews, automated testing, DevSecOps, observability, incident management, and operational excellence. Partner with architects, product managers, business stakeholders, and external partners to deliver commercial planning solutions. Mentor engineers, provide technical guidance, and evaluate emerging technologies and AI-enabled development practices.

Lead the architecture and hands-on development of reliable AI-powered email applications across backend, mobile, and desktop platforms. Design orchestration, state management, tool use, retries, fallbacks, and failure handling for long-running workflows. Build production APIs, improve observability and reliability, make trade-offs involving latency, cost, security, and user experience, and lead a small senior engineering team through technical reviews, mentorship, and execution.

Leads application engineering for an AI-powered email product across backend, mobile, and desktop platforms. Designs reliable AI workflows involving orchestration, state, tool use, retries, fallbacks, and failure handling. Builds APIs connecting AI capabilities to product experiences, makes architectural trade-offs, establishes observability and operational excellence, and leads a small senior engineering team through mentorship, design reviews, and code reviews. Partners with ML leadership to deliver scalable, reliable, and maintainable production systems.

Lead application engineering for an AI-powered email product across backend, mobile, and desktop platforms. Design reliable AI workflows involving orchestration, state, tool use, retries, fallbacks, and failure handling. Build APIs connecting AI systems to product experiences, make architecture and scalability decisions, mentor senior engineers, and establish strong observability, monitoring, testing, security, and operational practices. Partner with ML leadership to ship fast, reliable, maintainable product experiences.

Leads technical direction and hands-on execution for major products and systems. Designs scalable backend, frontend, API, database, and infrastructure solutions; writes code; drives architecture decisions; solves production issues; improves engineering quality, reliability, security, testing, and observability; and mentors engineers across teams.

Lead technical direction and hands-on execution for major products, systems, and engineering initiatives. Design scalable and reliable backend, frontend, API, database, and infrastructure solutions; write code; make architecture trade-offs; solve production issues; and improve testing, security, observability, and development practices. The role also leads critical initiatives, mentors engineers, and translates ambiguous product challenges into clear technical plans.

Own technical direction and execution for major products and systems. Design scalable, reliable architectures across backend, frontend, APIs, databases, and infrastructure; write production code; lead architecture decisions; solve complex production problems; improve engineering quality, testing, security, and observability; drive critical initiatives; and mentor engineers across teams.

Design, build, test, deploy and run full‑stack SaaS features using Node.js, TypeScript and React. Participate in design, code reviews, pairing, refactoring, API and backend development, ensure security, reliability and accessibility, and support production monitoring and agile delivery.

Build and operate production systems for Coder’s agentic development experience. Develop Go-based backend systems, contribute to React and TypeScript applications, improve agent execution and context management, and create reliable integrations across models, tools, workspaces, and developer infrastructure. Own projects through rollout, enhance system reliability and performance, participate in technical reviews, and collaborate with Product and Design to deliver useful AI-powered developer experiences.

Develop backend software for the Guardian emergency call-taking and dispatch platform using C# and .NET. Responsibilities include solution design, development, technical documentation, automated testing, and collaboration within an agile delivery team alongside product managers and test engineers. The role requires high-quality code, modern software engineering practices, and participation in code reviews and Git-based workflows. It is remote with occasional travel to Motorola offices and requires NPPV3 clearance or eligibility for clearance.

Design and scale backend systems, APIs, and services for Nango’s open-source developer infrastructure platform. Build APIs, SDKs, UIs, and runtime systems, optimize performance and reliability, solve integration challenges with customers, shape the roadmap, and maintain the open-source repository. The role requires strong ownership, product thinking, developer empathy, communication, and autonomy in a remote-first startup environment.

Build and operate IAM capabilities across the Ping platform, including APIs, services, models, workflows, infrastructure, databases, and UI experiences. Research emerging AI identity technologies, prototype solutions, and deliver scalable production features. Collaborate with product, UX, and engineering teams; participate in design, coding, testing, rollout, and support. Use AI tooling to accelerate development while maintaining sound engineering judgment, and contribute through technical communication, code reviews, and mentoring.

Design, build, and evolve order management capabilities across checkout, fulfilment, returns, amendments, and cancellations. Own features end-to-end from design through production support, improve platform architecture, integrations, reliability, and observability. Champion engineering excellence, CI/CD, monitoring, and operational excellence while mentoring engineers and collaborating with product and fulfilment stakeholders to deliver scalable, resilient systems.

Lead technical strategy and delivery for Supply Chain & Logistics systems, designing and operating scalable, reliable warehouse software. Mentor engineers, promote engineering best practices, influence architecture and technology investment, and drive DevOps, observability and continuous improvement across platforms.

Design, build, and operate Order Management platform features across checkout, fulfilment, returns, amendments and cancellations. Own end-to-end delivery including design, development, CI/CD, monitoring, production support, and platform architecture improvements to ensure scalable, resilient integrations and observable systems supporting retail fulfilment.

Design, build, and operate scalable Order Management capabilities for checkout, fulfilment, returns, amendments, and cancellations. Own end-to-end features, shape platform architecture, improve integrations and automation, and drive observability, resilience, and operational excellence in a high-volume retail environment.

Design, build, and own end-to-end order management capabilities for checkout, fulfilment, returns, amendments, and cancellations. Drive platform architecture, integrations, CI/CD, observability, resilience, and operational excellence. Mentor engineers, collaborate with product and fulfilment stakeholders, and continuously improve engineering standards and tooling.

Lead technical design and delivery of supply chain and warehouse software at scale. Drive architecture, DevOps, observability, reliability and performance practices; mentor senior engineers; influence product and technology strategy; promote clean code and engineering excellence across teams; support recruitment and outreach.

Architect, develop, integrate, test, debug, and optimize embedded software for diverse hardware platforms using RTOS, bare-metal, Zephyr, and Linux environments. Lead software architecture, system validation, test automation, and multi-threaded application development while collaborating with hardware and software teams. Define test strategies, analyze defects, document designs, conduct code reviews, mentor engineers, optimize performance and power usage, and contribute to open-source projects.

Lead architecture, design and delivery of scalable, cloud-native microservices for retail trading. Provide technical leadership, ensure observability and resilience, drive CI/CD and operational excellence, and mentor engineering teams.

Lead design and delivery of scalable, resilient backend systems and integrations. Provide technical leadership, conduct code reviews, ensure automated testing and observability, mentor engineers, collaborate with stakeholders, and drive operational excellence for cloud-native applications.

Design and build scalable applications using Golang while supporting component development, data storage, performance optimization, testing, automation, CI/CD, and cloud deployments. Collaborate with distributed client teams, analyze requirements, contribute to agile delivery, maintain source-control practices, and support technical leaders. The role requires strong communication, code review, and collaborative software development skills.

Lead technical direction and modernise international commerce platforms. Design scalable integrations for product, pricing, fulfilment, marketplace and partner flows. Champion engineering excellence, DevOps practices, reliability, observability and run-first ownership. Mentor engineers, align multi-team delivery and shape technology strategy to support international growth.