Staff Software Developer

Salary: £30,000 - 60,000 per year

Requirements

• 6+ years software engineering experience
• Strong backend experience in .NET / C#
• Experience building scalable web services / distributed systems
• Strong understanding of software design and architecture
• Experience working in Agile environments
• Strong problem-solving and communication skills
• Must be based in NI / commutable to Belfast
• Nice to Have: Payments / fintech experience
• Nice to Have: PCI or security-focused environments
• Nice to Have: Frontend exposure (HTML, CSS)

Responsibilities

• Lead and mentor a team of engineers
• Design, build and maintain scalable backend systems and APIs
• Contribute to architecture, standards and engineering best practices
• Support testing, deployment and production environments
• Troubleshoot complex issues and drive solutions
• Collaborate with cross-functional teams to deliver roadmap features
• Ensure compliance with security and industry standards

Technologies

• Backend
• C#
• CSS
• Frontend
• Support
• Security
• Web
• ASP.NET
• UX UI Design

More

We are excited to offer an opportunity for a Staff Software Engineer to join our high-performing engineering team based in Belfast, working on a large-scale payment platform. This hands-on technical leadership role will allow you to shape systems, mentor engineers, and drive technical direction while contributing to the design and development of highly scalable and high-availability systems that process millions of transactions daily. Our benefits include 26 days of holiday plus bank holidays, flexible and remote-first working options, private medical and dental cover, a pension plan, enhanced maternity leave, life assurance, income protection, electric car and cycle to work schemes, and a share purchase plan. We also hold company social events to foster team collaboration.

last updated 13 week of 2026