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# Front office C# Developer

- **Company:** McGregor Boyall Associates Ltd.
- **Location:** London, UK
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), .NET Framework, Artificial Intelligence, Amazon Web Services, C Sharp (Programming Language), Cloud Computing, Software Quality, Data Structures, Relational Databases, Distributed Systems, Microsoft SQL Server, MySQL, Object-Oriented Software Development, Commercial Software, Software Architecture, Redis, Software Tools, Software Engineering, Software Systems, Enterprise Software Applications, Cloud Platform System, .NET Core, GitHub Copilot, Software Application Programming, Event Driven Architecture, Apache Kafka, Claude
- **Published:** October 17, 2026
- **Apply:** https://www.totaljobs.com/job/front-office-c-developer/mcgregor-boyall-associates-limited-job108187805

## About the Role

The successful candidate will combine strong hands-on engineering expertise with the ability to independently design, architect and deliver complex software solutions supporting global trading operations., * Strong commercial software engineering experience using C# and .NET, with excellent programming fundamentals.

 * Proven experience designing and delivering complex enterprise applications within investment banking or capital markets.
 * Knowledge of Securities Lending, Stock Loan, Securities Financing, Equity Financing or Equity Swaps.
 * Demonstrable experience taking ownership of technical architecture and delivering substantial projects independently.
 * Strong understanding of object-oriented design, data structures, algorithms and software engineering principles.
 * Experience working with relational databases such as SQL Server or MySQL.
 * Ability to articulate architectural decisions, evaluate technical trade-offs and solve complex engineering challenges., We are particularly interested in engineers who operate beyond simply delivering assigned development tasks.

You will be comfortable taking a business requirement, defining the technical solution, making architectural decisions and owning delivery through to production.

This is a hands-on technical position, suited to an experienced engineer who enjoys solving complex problems and taking genuine responsibility for the systems they build.

Candidates with a strong Java background and previous substantial C# experience will also be considered.

## Description

* Design, develop and enhance high-performance C#/.NET applications supporting front office trading and securities financing activities.
 * Take technical ownership of projects from initial requirements and architectural design through development, deployment and production.
 * Contribute to the modernisation of existing applications and the development of strategic cloud-based platforms.
 * Design scalable, maintainable solutions using modern software engineering principles and distributed technologies.
 * Work collaboratively with engineering teams and business stakeholders across London, New York and Asia.
 * Evaluate technical approaches, make architectural decisions and drive engineering best practices.
 * Leverage AI-assisted development tools to improve engineering productivity, code quality and delivery efficiency., * AWS or another major cloud platform, ideally involving application modernisation or cloud-native development.
 * Modern .NET / .NET Core.
 * Java development experience alongside C#.
 * Distributed systems, Kafka, Redis or event-driven architectures.
 * Experience developing applications supporting OTC derivatives or complex trade lifecycle processing.
 * Practical experience using AI-assisted engineering tools such as GitHub Copilot or Claude.