Senior C# Developer (Ref: d7555)

This range is provided by Referment. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

OverviewReferment

is working with a leading global trading firm that is looking to hire a

Senior C# Developer

to join its high-performing technology team in London. This role offers the chance to work on a range of front-office trading systems that support physical and financial commodity desks across global markets.

As a senior engineer, you’ll play a key role in designing and developing scalable, high-performance applications used daily by traders, quants, and risk analysts. The team operates in a highly agile environment, and you’ll have the opportunity to contribute to both technical direction and hands-on development across critical systems.

Responsibilities

Design, develop, and maintain enterprise-level trading applications using C#/.NET

Build and enhance tools used by front-office trading desks across commodities markets

Partner with traders, analysts, and other developers to gather requirements and deliver robust software solutions

Ensure system reliability, performance, and scalability in a high-volume environment

Contribute to architecture and design decisions, and mentor junior developers where appropriate

Integrate with internal and external data feeds, APIs, and trading platforms

Support modern development practices, including CI/CD and automated testing

What We''re Looking For

7+ years of experience in C#/.NET software development

Experience working in a front-office or trading environment, ideally within financial services or commodities

Strong understanding of object-oriented programming, multithreading, and performance optimisation

Solid experience with SQL Server and messaging systems such as RabbitMQ or Kafka

Comfortable working in a fast-paced, agile environment and engaging directly with business users

Familiar with version control, CI/CD pipelines, and modern software development practices

Desirable Experience

Exposure to energy or commodities markets

Knowledge of cloud services (preferably Azure)

Experience with scripting languages such as Python

Why Apply?This is a fantastic opportunity to join a technology-led organisation where software development is central to business success. You’ll work alongside highly skilled professionals on complex challenges, using the latest technologies in an environment that values innovation and collaboration.

Job Details

Seniority level: Mid-Senior level

Employment type: Full-time

Job function: Information Technology

Industries: Software Development, Financial Services, and IT Services and IT Consulting

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