Top Software Engineer Jobs in Belfast

The role involves designing and maintaining scalable software platforms, troubleshooting complex problems, mentoring engineers, and establishing best practices to ensure software integrity.

Develop and optimize embedded software systems, mentor junior engineers, collaborate with cross-functional teams, and ensure software performance and reliability.

Develop and optimize embedded software for diverse hardware platforms, lead software architecture efforts, mentor junior engineers, and ensure quality through testing and collaboration with cross-functional teams.

Design, build and optimise Python-based AI applications and data storage solutions. Collaborate with clients and teams, enforce code quality, CI/CD, testing practices, and deliver scalable production systems across cloud environments while travelling to client sites.

As a Principal Engineer at M&S, you'll drive technical strategy, influence architecture, and mentor engineers while delivering on personalization, search, and machine learning features in collaboration with cross-functional teams.

Build and own end-to-end cloud partner integrations: design architecture (auth, multi-tenancy, data movement), implement backend systems, run and be on-call for infrastructure/CI/deployments, work with external platforms and internal teams, and write design docs to set team technical direction.

Develop reliable cloud services on the hyperscaler platform, contributing to cloud infrastructure, databases, and monitoring systems. Must write reliable code with team-oriented skills.

The role involves designing and developing AI-driven automation solutions to enhance the reliability and efficiency of applications, focusing on reducing manual tasks and improving system support through collaboration with teams and stakeholders.

Manage and scale Kubernetes clusters, automate infrastructure, optimize performance, maintain blockchain nodes, and improve system reliability while collaborating with product teams.

Lead design and implementation of scalable AI-centric systems for offensive security, develop agentic AI capabilities (LLMs, RAG), own feature lifecycle to production, mentor engineers, run design reviews, and integrate AI into microservice architectures with cloud, container, and messaging technologies.

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.

Lead development of robust, scalable backend systems and integrations. Provide technical leadership, architecture and design, code reviews, mentorship, and operational excellence. Collaborate with product and business stakeholders, implement observability and testing best practices, and propose innovative solutions to improve performance, security, and customer service.

Work with experienced engineers to develop and support live-service mobile game features. Fix bugs, write clean C# Unity code, collaborate with designers/QA, and learn using mentoring and AI-assisted tools.

Design and evolve systems for Motion's infrastructure, focusing on reliable and secure operations across APIs, Linux systems, and cloud environments with a focus on hands-on coding and engineering judgment.

Design, build, and ship production-ready software; decompose ambiguous problems into system architectures; modernise legacy systems and develop greenfield features; own technical decisions, testing, observability, and documentation; collaborate with product and design and ensure operational readiness.

Lead architecture and strategy for Athena: build production-grade distributed systems that validate, deduplicate, and route vulnerability data; move prototypes to reliable, observable pipelines; set technical standards, scale the team, and partner on product and operational decisions.

Build and maintain scalable cloud-based data management and processing systems for biomedical research. Own platform components end-to-end, drive architecture and standards, improve CI/CD, observability, security, performance, mentor engineers, and participate in on-call incident response.

Design, implement, and scale robust Rust services and libraries for trading, payments, and crypto. Build low-latency distributed systems using RPC, Kafka, and event-driven patterns. Write testable, high-performance asynchronous network code, debug across OS/network/application stacks, own systems end-to-end, and mentor other engineers while collaborating with product teams.

Lead design, build, release, and maintain large-scale software solutions. Provide technical leadership, architecture, code review, mentorship, and operational stability. Drive CI/CD, DevOps practices, observability, and technical roadmap while collaborating with product and delivery teams.

Design, build and maintain automated test frameworks for multi-cloud (AWS/GCP) enterprise products. Develop and run API, backend and frontend automation, create mock servers, integrate tests into CI/CD, troubleshoot automation jobs, estimate test effort, and own QA sign-off and release coordination.

Lead the Modeling Platform team, setting technical strategy and overseeing the evolution of a scalable distributed computation architecture while mentoring engineers and enhancing team capabilities.

The Senior Embedded Software Engineer designs, develops, and maintains embedded software for various hardware platforms, ensuring integration and reliability while leading software architecture efforts and mentoring junior engineers.

Lead backend platform development for National Security clients using cloud technologies, ensuring operational responsibility and agile practices.

Design, implement, and maintain full-stack web features for a dairy farm management system. Own development lifecycle, ensure quality and reliability, support customers and technicians, and collaborate across cross-functional teams.

As a Senior Software Engineer, you'll maintain critical data framework integrations, ensuring performance and reliability while collaborating with the community, affecting real-time analytics and observability systems.