Top Software Engineer Jobs in Belfast

The role involves contributing Go code, collaborating with teams, building features, improving system performance, and maintaining AWS infrastructure.

The Software Engineer will design, develop, and install software solutions, focusing on web applications using PHP and ensuring coding standards and technical design compliance.

Drive technical direction and deliver complex multi-month software projects. Translate ambiguous product needs into technical plans, lead design reviews, mentor engineers, collaborate with cross-functional teams and vendors, ensure quality and operational readiness, produce design docs, and support roadmap and backlog feasibility for digital products.

Design, develop, and maintain secure, scalable backend services and mobile SDKs for payment device integrations. Lead architecture, improve CI/CD and testing, mentor engineers, ensure security and compliance (PCI/OWASP), investigate performance issues, participate in on-call rotation after onboarding, and collaborate cross-functionally to deliver reliable payment solutions.

Design and implement high-performance backend services (Elixir/Phoenix), operate and evolve the managed cloud platform on Kubernetes/AWS, build declarative infrastructure with IaC and GitOps, improve observability and reliability, and collaborate remotely with periodic in-person meetings to support document processing workflows at scale.

Develop and maintain NedGraphics cloud products (OptiNedLink), build serverless AWS backends, design secure REST APIs and event-driven workflows, implement automated testing, optimize performance and scalability, enforce security best practices, integrate third-party APIs and ERP/PLM systems, and produce developer documentation and API specifications.

The Senior Software Engineer will drive the technical vision, manage large datasets, ensure code quality, and lead development initiatives in a remote-first environment.

Design and execute test plans, automate tests, build and enhance test frameworks, integrate automation into CI/CD, validate UIs and REST APIs, perform root-cause analysis, and leverage LLMs and AI tools to improve QA workflows and productivity.

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.

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

As a Software Engineer in Sustaining Engineering, you will resolve complex issues related to Ubuntu and open-source software, engage with upstream communities, and develop bug fixes while maintaining close collaboration with support and product teams.

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.

Support community-driven development by reviewing community PRs, improving contribution processes, debugging issues, and enhancing documentation. Collaborate with contributors and maintainers for reliable product improvements.

The Senior II Software Engineer will design scalable storage solutions, solve complex issues, and improve distributed systems in an Agile environment.

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

Responsible for building and maintaining Android applications with AI features. Focus on performance, UX design, and collaboration with backend and ML engineers.

As an iOS Developer, you will build and maintain AI-powered iOS applications focusing on performance, reliability, and user trust. Collaborate with engineers to integrate AI features, design UX patterns, and optimize app performance.

The Software Engineer will develop and maintain cross-platform desktop applications, focusing on performance, reliability, and integration of AI features. Responsibilities include optimizing applications, managing local data, and ensuring stability on macOS and Windows.

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 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.

The Senior Software Engineer will enhance Speechify's product experience by building foundational services, collaborating with product teams, optimizing functionality, and developing backend services using Kotlin.

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.