Senior Software Developer

- per annumLondonPermanentExcellent 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 ResponsibilitiesDesign, develop, and maintain high-performance applications in C# and .NETLead architectural discussions and contribute to technical directionBuild scalable, reliable systems to support automated trading and researchDevelop and optimise database solutions (SQL Server or equivalent)Improve performance, reliability, and automation across systemsMentor junior developers and promote best engineering practicesParticipate in code reviews and enforce high standards of qualityCollaborate closely with researchers and traders to translate requirements into robust software solutionsContribute to continuous improvement of development processes and toolingRequired Skills & ExperienceBSc (or higher) in Computer Science or a related scientific disciplineStrong recent experience with C# and the latest .NET platform5+ years of professional software development experienceSolid experience with SQL Server, Oracle, or equivalent relational databasesStrong understanding of object-oriented design principles and software architectureExperience building production-grade, scalable systemsFluency in English with excellent written and verbal communication skillsHigh attention to detail and a thorough, analytical mindsetDesirableExperience in multi-threaded and concurrent application developmentNetwork programming experience (TCP/UDP)Experience with distributed version control systems (Git)Strong understanding of Windows technologiesExposure to financial markets or trading systemsSpectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.