Top Software Engineer Jobs in Belfast

As a Python and Kubernetes Software Engineer, you will develop data analytics solutions using open source tools, collaborating with a distributed team.

The software engineer will develop and operate backend services for Snap Store and Charmhub.io, focusing on clean APIs and feature implementation.

The role involves developing software for Linux-based systems on autonomous devices, optimizing performance and ensuring reliability in various hardware environments.

As a Software Engineer at Canonical, you will collaborate globally to shape open-source software operations, focusing on Python and Golang development, enhance DevOps workflows, and improve infrastructure operations for cloud computing solutions.

The role involves designing and delivering open source software operations code in Python, ensuring system reliability, and collaborating with teams across the Linux stack.

Build and maintain high-throughput, reliable database integrations to replicate data into ClickHouse. Debug production issues, improve observability and reliability, participate on-call, collaborate with customers and cross-functional teams, and influence product roadmap.

As a Software Engineer (GenAI-Focused), you will enhance the DoiT Cloud Intelligence product, implement features, review code, and improve code health, focusing on AI and cloud technologies for cost optimization and performance.

The Sr. Software Engineer will design, develop, and maintain public APIs and integrations, ensuring high scalability and performance while improving code quality using AI tools.

The Senior Back-End Software Engineer designs, develops, and maintains scalable backend systems while taking ownership of the software development lifecycle.

As a Software Engineer, you will build features, write maintainable Roblox Lua code, collaborate with teams, and enhance gameplay for millions of players.

The Senior Full-Stack Engineer will design and build scalable UI systems, collaboratively own features, and support production quality. Responsibilities include API design, debugging, and performance tuning.

Build and operate production custody systems: signing service, key management, chain integrations, and transaction pipelines. Own end-to-end subsystems, integrate new chains, collaborate with cryptography on threshold signing and key recovery, write post-mortems, and produce clear async design docs and PRs.

Design, build, and scale Grafana Cloud Observability integrations and SDKs for cloud and Kubernetes environments. Implement middleware, dashboards, alerts, and documentation; drive features from ideation to production, participate in on-call rotations, collaborate with product, sales, and support, and contribute to open-source projects and upstream communities.

Work hands-on in a large, mature C++ (Windows/MFC) codebase to own and modernize features and subsystems, refactor legacy components, optimize performance-sensitive spectral algorithms, and collaborate with engineers and domain experts to ensure correctness, maintainability, and backward compatibility.

Senior full-stack product engineer owning large product areas end-to-end: research, write specs, design wireframes, implement features across frontend and backend, and collaborate closely with product, design, and infra. Focus on solving customer problems, building durable abstractions, and shipping high-quality, scalable software.

Senior full‑stack product engineer owning a large product area end-to-end: research customers, write specs and wireframes, design and implement features across frontend and backend, collaborate with product and design, and ship high-quality scalable software.

Lead design and implementation of scalable generative AI services and reusable components using Python. Drive architectural decisions, deploy containerized applications on Kubernetes (EKS), ensure scalability/observability and CI/CD, mentor engineers, and collaborate with product and research teams to productionize LLM capabilities.

Design, build, and maintain backend API and database services for a cloud PBX platform. Drive architecture, performance optimization, debugging, CI/CD and test automation, and collaborate with QA. Mentor peers and raise engineering standards while safely evolving high-load, networked systems.

Design, implement, and operate global cloud infrastructure for a containerized SaaS. Own end-to-end infrastructure projects, IaC automation, observability, on-call reliability, and mentor engineers while collaborating with product, support, and sales.

As a Senior Software Engineer at Kainos, you will design, develop, and maintain software applications, mentor juniors, and contribute to architectural decisions.

The role involves leading compliance quality initiatives, designing test automation frameworks, collaborating with teams, and ensuring compliance in software development.

As a Software Engineer, you will design, develop, and maintain software solutions, collaborating with teams in an agile environment while ensuring quality and security in your code.

Design, build and maintain mobile and web applications for payments. Collaborate on architecture, deliver end-to-end solutions, improve systems and delivery, promote testing, CI/CD, security and reliability, and mentor teammates while integrating AI into engineering workflows.

Responsibilities include building and maintaining backend services for distributed applications, requiring functional programming with Scala and TypeScript, alongside client interactions.

As a Software Engineer at Canonical, you will design, build, and ship software, improve packaging and distribution processes, and mentor colleagues while contributing to open source projects.