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# Full Stack Engineer - C# / React / SQL

- **Company:** Cross Ltd
- **Location:** London, UK
- **Contract:** Permanent contract
- **Skills:** C Sharp (Programming Language), Code Review, Database Design, Microsoft SQL Server, SQL Databases, Web Application Frameworks, ReactJS, Backend, Front End Software Development, Restful APIs, Microservices
- **Published:** November 2, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/full-stack-engineer-c-react-sql/54702281

## About the Role

Strong proficiency in C# .NET (Core preferred) for backend development
Solid experience with React and modern JavaScript frameworks
Experience with SQL Server and database design
Proven experience working on middle/back-office systems in financial services
Understanding of fund operations workflows and processes
Experience with RESTful APIs and microservices architecture
Strong problem-solving abilities and attention to detail

Highly Desirable
Experience with fund accounting/administration systems (Geneva, Charles River, SimCorp, etc.)
Knowledge of portfolio accounting concepts and post-trade lifecycle
Familiarity with financial instruments (equities, fixed income, derivatives)
Understanding of hedge fund operations

This is a leading multi-strategy hedge fund managing billions in assets across global markets. Offering a collaborative environment with cutting-edge technology and exposure to complex financial systems.

## Description

Our multi-strategy hedge fund client is seeking an experienced Full Stack Developer to join their technology team in London on a contract basis.
You'll be working on critical middle and back-office systems that support trading and operations functions., Design, develop, and maintain full stack applications using C# backend and React frontend
Build and enhance middle and back-office systems supporting fund operations
Collaborate with business stakeholders including fund accounting, operations, and trading teams
Develop scalable, high-performance solutions for financial data processing
Participate in code reviews and maintain high development standards