https://jobs.co.uk/job/senior-software-developer-spectrum-it-recruitment--6326d1ab-0ebd-43e2-b5b4-86a9b7299d4a RSS feed for Senior Software Developer at Spectrum IT Recruitment. en-gb Sat, 29 Aug 2026 16:43:14 GMT https://jobs.co.uk/job/senior-software-developer-spectrum-it-recruitment--6326d1ab-0ebd-43e2-b5b4-86a9b7299d4a https://jobs.co.uk/job/senior-software-developer-spectrum-it-recruitment--6326d1ab-0ebd-43e2-b5b4-86a9b7299d4a Sat, 29 Aug 2026 11:53:22 GMT Location: London | Salary: 10000-500000 Annual | Type: Permanent | An excellent opportunity for an experienced Senior Software Developer to join a high-performing technology team responsible for architecting, developing, and enhancing sophisticated trading and research systems. This role would suit a strong C#/.NET engineer who enjoys solving complex technical problems and wants to have genuine influence over the architecture and direction of the systems they build. You will work on a combination of greenfield development and the continuous improvement of established platforms, building high-performance, reliable and scalable applications that directly support real-world trading strategies and quantitative research. As a senior member of the engineering team, you will have the opportunity to influence technical architecture, development standards, performance optimisation and engineering best practices, while working closely with researchers, traders and other technical specialists. Key Responsibilities Design, develop and maintain high-performance applications using C# and modern .NET Take ownership of significant software development projects from initial design through to production Contribute to and lead architectural and technical design dec... Permanent