Top Software Engineer Jobs in Belfast

As a Senior Software Engineer, you will build scalable distributed systems, improve developer experience, mentor peers, and lead incident responses.

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.

We are seeking 2025 and 2026 Graduate Software Engineers to join Canonical's teams focused on open source software. Responsibilities include product roadmapping, coding in various languages, engaging with the community, and ensuring high-quality performance. Candidates should have an exceptional academic track record and experience with Linux.

As a Software Engineer, you will design and develop applications, write clean code, engage in code reviews, optimize systems, and explore new technologies in a remote team.

The Software Engineer will develop features end-to-end in a Ruby on Rails application, collaborating with technical and clinical teams while maintaining a focus on user outcomes and code quality.

The Lead Software Engineer designs and develops software solutions, leads teams, mentors junior members, and interacts with customers while integrating AI or ML technology.

Join Uncountable's Implementations Engineering team to build software that integrates R&D lab instruments with their platform, working closely with customers and developing automated data pipelines.

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

The Software Engineer will design and execute full-stack projects, build and maintain backend APIs and frontend libraries, and mentor junior team members while ensuring engineering excellence.

The Software Engineer will design and maintain payment processing systems, mentor other engineers, and ensure security in client transactions within the crypto ecosystem.

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

Lead prototyping and delivery of high-impact software solutions by researching and applying emerging technologies, building and maintaining modern applications, contributing to architecture and technical decisions, mentoring juniors, and communicating technical trade-offs to stakeholders.

Entry-level software engineer supporting development, maintenance, and integration of MES and test-equipment software. Tasks include coding, debugging, reporting tools, database query work, production support, user training, root-cause analysis, and collaborating with internal teams and vendors on Industry 4.0/Smart Factory projects.

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.

The Staff Software Engineer will design and build backend platforms for content and media, develop APIs, lead architecture design, and act as a technical authority.

As a Lead Software Engineer, you will lead teams in developing high-quality applications, manage junior staff, and provide technical leadership, while ensuring adherence to software development best practices.

As a Senior Software Engineer, you'll develop high quality solutions, collaborate on technical decisions, mentor juniors, and work with modern software practices.

Build and evolve Python-based AI services powering personalised recommendation and conversational experiences. Design and implement evaluation frameworks (including LLM-based evaluation), run experiments and data-driven improvements, integrate AI services with APIs, and improve relevance, consistency, and customer outcomes at scale.

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 teams to design, build, test, and maintain modern, scalable software. Provide architecture and product ownership, mentor and coach junior engineers, drive CI/CD practices, and collaborate with customers to deliver high-quality solutions.

Design and implement a distributed control plane for Confluent Cloud offerings, utilizing Kubernetes and various programming languages, while supporting the product lifecycle.

Lead the Market Making Engineering team in developing real-time quoting systems, collaborate with stakeholders, and enhance software and processes.

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.