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 tooling Required 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 mindset Desirable 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