Staff Software Engineer

Salary: £64,000 - 104,000 per year

Requirements:

• Degree in Computer Science or a related discipline
• 6+ years of professional software development experience
• Strong server-side development experience using C# / .NET
• Experience designing and implementing scalable web or service-based solutions
• Solid experience with relational databases (e.g. SQL Server or equivalent)
• Experience working in CI/CD environments (e.g. Jenkins, GitLab, Bamboo)
• Strong background in automated testing (unit testing, BDD frameworks)
• Good understanding of software design principles, OOP, refactoring, and design patterns
• Experience working in Agile delivery environments (Scrum, Kanban, Lean)
• Strong analytical skills and ability to solve complex technical problems
• Excellent communication and collaboration skills
• Must be based in Northern Ireland or within commuting distance of Belfast, with the full rights to work in the UK
• Experience with UI technologies (HTML, CSS)
• Exposure to software architecture, systems administration, or information security
• Experience working on high-availability or high-throughput systems

Responsibilities:

• Lead and mentor a team of software engineers across varying experience levels
• Design, develop, review, and maintain complex, high-quality codebases
• Provide technical guidance on testing strategies, validation, and quality standards
• Contribute to architectural decisions and system design for scalable services
• Estimate effort for complex initiatives and support delivery planning
• Support deployment activities across test and production environments
• Troubleshoot complex issues and communicate solutions clearly to technical and non-technical stakeholders
• Promote best practices in coding standards, design patterns, and continuous improvement
• Support onboarding and on-the-job training for engineers within the team

Technologies:

• Bamboo
• C#
• CI/CD
• CSS
• GitLab
• Support
• Jenkins
• Kanban
• OOP
• SQL
• Security
• Web
• UX UI Design
• ASP.NET
• LESS

More:

We are a well-established technology organisation that builds and operates large-scale, highly available platforms used by customers of all sizes. Our Belfast engineering team owns the development and ongoing enhancement of a mission-critical platform that processes very high transaction volumes, where performance, resilience, and reliability are key. This is a permanent, full-time Staff Software Engineer role based in Belfast, Northern Ireland, with a remote-first working model and commuting distance required. We offer a competitive salary of 65,000 to 70,000, remote-first flexible working with an office in central Belfast, 26 days annual leave plus bank holidays, private medical and dental insurance, life insurance, income protection, critical illness cover, pension with employer matching, enhanced company-paid maternity leave, cycle to work and electric car schemes, an employee stock purchase plan, and regular company social events and community initiatives.

last updated 36 week of 2026