Senior Software Developer

Excellent opportunity for a Senior Software Developer to play a key role in architecting, developing, and enhancing our clients in-house trading and research systems. This is an opportunity to work on greenfield projects, influence architectural decisions, and directly impact systems that support real-world trading strategies. As a senior member of the team, you will contribute both technically and strategically, helping shape development standards, performance optimisation, and system scalability. You will primarily work within a C# / .NET / SQL Server / ASP.NET ecosystem, developing high-performance, reliable, and maintainable applications. Key Responsibilities Design, develop, and maintain high-performance applications in C# and .NET Lead architectural discussions and contribute to technical direction Build scalable, reliable systems to support automated trading and research Develop and optimise database solutions (SQL Server or equivalent) Improve performance, reliability, and automation across systems Mentor junior developers and promote best engineering practices Participate in code reviews and enforce high standards of quality Collaborate closely with researchers and traders to translate requirements into robust software solutions Contribute to continuous improvement of development processes and toolingRequired Skills & Experience BSc (or higher) in Computer Science or a related scientific discipline Strong recent experience with C# and the latest .NET platform 5+ years of professional software development experience Solid experience with SQL Server, Oracle, or equivalent relational databases Strong understanding of object-oriented design principles and software architecture Experience building production-grade, scalable systems Fluency in English with excellent written and verbal communication skills High attention to detail and a thorough, analytical mindsetDesirable Experience in multi-threaded and concurrent application development Network programming experience (TCP/UDP) Experience with distributed version control systems (Git) Strong understanding of Windows technologies Exposure to financial markets or trading systemsSpectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy