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# Senior Software Developer

- **Company:** Spectrum IT Recruitment
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £100,000.0 - £120,000.0
- **Contract:** Permanent contract
- **Skills:** ASP.NET, .NET Framework, Microsoft Windows, Algorithmic Trading, C Sharp (Programming Language), Code Review, Relational Databases, Database Development, Systems Theories, Microsoft SQL Server, Network Programming, Object-Oriented Software Development, Oracle (Applications), Performance Tuning, Software Architecture, Standard Sql, Software Engineering, Software Systems, Multithreading, Git, Information Technology, Software Version Control
- **Published:** August 28, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5858151028

## About the Role

* 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
 * Desirable: network programming experience (TCP/UDP)
 * Desirable: experience with distributed version control systems (Git)
 * Desirable: strong understanding of Windows technologies
 * Desirable: exposure to trading systems

## Description

* 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

Technologies:

 * ASP.NET
 * C#
 * Git
 * Support
 * Network
 * Oracle
 * SQL
 * Windows, We are offering an 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 a greenfield opportunity where you can influence architectural decisions and directly impact systems that support real-world trading strategies. As a senior member of the team, you will help shape development standards, performance optimisation, and system scalability. You will work within a C# .NET SQL Server ASP.NET environment on high-performance, reliable, and maintainable applications. This role offers the chance to collaborate closely with researchers and traders in a professional, technically challenging setting.


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