Staff Software Engineer

Job Title: Staff Software Engineer

Location: Belfast / Northern Ireland (remote-first, commuting distance required)

Salary: 65,000 – 70,000

Employment Type: Permanent, Full-time

Overview

We are working with a well-established technology organisation that builds and operates large-scale, highly available platforms used by customers of all sizes. The engineering team in Belfast 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 role is suited to a senior engineer who enjoys technical leadership, hands-on development, and mentoring others, while working closely with product and engineering stakeholders.

The Role

As a Staff Software Engineer , you will provide technical leadership within a cross-functional engineering team, contributing to both architectural decisions and day-to-day development. You will guide the delivery of features from the product roadmap, ensure high engineering standards, and support the growth of less-experienced engineers.

You’ll work across back-end and, where required, front-end components, helping to design and build scalable, robust services in a modern CI/CD environment.

Key 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

Required Experience

• 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

Nice to Have

• Experience with UI technologies (HTML, CSS)
• Exposure to software architecture, systems administration, or information security
• Experience working on high-availability or high-throughput systems

Benefits

• Competitive salary
• Remote-first flexible working (office available in central Belfast)
• 26 days annual leave plus bank holidays (increasing with service)
• Private medical and dental insurance
• Life insurance, income protection, and critical illness cover
• Pension with employer matching (5%–8%) and salary sacrifice options
• Enhanced company-paid maternity leave
• Cycle to work and electric car schemes
• Employee stock purchase plan
• Regular company social events and community initiatives

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