Staff Software Engineer | .NET, AWS | Belfast (Hybrid 3 Days) Location: Belfast Type: Permanent About the Opportunity: This role sits within a high-scale payments engineering environment responsible for processing large volumes of real-time transactions. Systems are built for performance, resilience, and continuous availability. As a Staff Engineer, you will operate as a technical leader within the team, driving delivery across complex systems while mentoring engineers and shaping engineering standards. What Youll Be Doing: Lead the design and delivery of scalable backend services using C# and .NET Provide technical leadership across a team of engineers at varying levels Contribute to architecture decisions across high-throughput, distributed systems Design and build secure, resilient services aligned to industry standards Guide teams on best practices across coding, testing, and system design Contribute to CI/CD pipelines and support release and deployment processes Troubleshoot and resolve complex production issues Provide accurate estimates across projects and technical initiatives Collaborate with cross-functional teams to deliver product roadmap features Mentor engineers through code reviews, coaching, and knowledge sharing What Youll Bring: 6 years commercial software engineering experience Strong experience with C# and .NET in backend environments Experience building scalable web services and distributed systems Strong understanding of relational databases such as SQL Server Experience working with CI/CD pipelines and automation tools Experience with automated testing approaches Strong understanding of software design principles and patterns Experience working in Agile, Scrum, or Lean environments Strong problem-solving and communication skills Nice to Have: Experience working within payments or regulated environments Understanding of PCI or security-focused development practices Exposure to frontend technologies such as HTML and CSS Why Join: Work on high-scale, real-time systems with real-world impact Opportunity to step into a true technical leadership role Strong engineering culture with focus on quality and ownership Flexible working model with hybrid options Clear progression within a growing engineering function If you're interested or have any further questions on the role, please feel free to reach out to Eve Geddis directly on LinkedIn. Skills: .Net AWS Sql Server CICD Benefits: WFH Allowance Pension Fund Medical Aid / Health Care