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# Senior Full Stack Developer | C# & React | Greenfield Trading Platform | London, Hybrid | Up to £120k + Bonus, Benefits

- **Company:** Greenfield Trading Platform
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Algorithmic Trading, C Sharp (Programming Language), Performance Tuning, Software Engineering, SQL Databases, Software Organization, ReactJS, Graphql, Front End Software Development, React Redux
- **Published:** June 27, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/x/40165464/

## About the Role

7+ years of experience in software development with a strong focus on C# and .NET.Proven experience in designing and building scalable, event-driven architectures.React experience is a plus, particularly for building modern user interfaces.Proficiency in SQL, with GraphQL and Redux being beneficial.Experience in software development best practices, performance optimization, and debugging.Strong analytical skills for solving complex technical challenges.Excellent communication and stakeholder management skills.Financial Services experience is highly desirable, particularly within trading, investment, or front-office environments.

## Description

This is an exciting opportunity to work on real-time trading systems, where you'll be responsible for full-stack development and play a key role in enhancing their trading platforms.C#.NET is the core back-end technology across the business.React is used for the front-end, making experience with it beneficial but secondary.As a Senior Developer, you'll be hands-on in development while also contributing to technical decisions.
Salary: Up to £120,000 + Strong Bonus + Benefits Hybrid Working: 4 days per week in London (West End), Design, develop, and maintain scalable applications within the trading ecosystem.Work across the full stack, with a primary focus on C# back-end development.Ensure performance, maintainability, and testability of all solutions.Work closely with business users to understand requirements and deliver high-impact solutions.Stay up to date with emerging technologies and contribute to the technical roadmap.Collaborate with the team, mentor junior developers, and uphold development best practices.


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