C# Developer (ReactiveX)

We are AMS. We are a global total workforce solutions firm; we enable organisations to thrive in an age of constant change by building, re-shaping, and optimising workforces. Our Contingent Workforce Solutions (CWS) is one of our service offerings; we act as an extension of our clients' recruitment team and provide professional interim and temporary resources.

Our investment banking client has been present in the UK for more than 150 years, they're a long-term partner to British business. Today, the Group is formed of 10 divisions and employs 9,300 staff based in 21 core locations right across the country. Their role is simply stated: help clients achieve their goals by combining local know-how and global reach. In so doing, they seek to make a positive, sustainable contribution to both the UK economy and society.

On behalf of this organisation, AMS are looking for a C# Developer (ReactiveX) for a 6 months contract based in London (Hybrid - 3 times per week in the office)

Purpose of the Role:

We are looking for an experienced C# Developer (ReactiveX) to join a Risk View project, a key initiative within the Fixed Income division. You will work on a strategic global Real Time risk and P&L solution that supports Front Office trading activities.

Responsibilities of the role:

As a C# Developer (ReactiveX) you will be responsible for:

• Develop and maintain a high-performance SOA Back End using C# and .NET.
• Work with Real Time high-throughput data, ensuring system responsiveness and reliability.
• Collaborate with traders, quants, and other development teams to gather requirements and propose solutions.
• Architect, develop, test, and review major system features.
• Optimise memory and CPU performance using profiling tools.
• Champion Agile development, Test-Driven Development (TDD), and UI automation.
• Drive automation, improvement, and simplicity across the development process.
• Proactively identify and resolve technical issues, engaging with teams across multiple locations.
• Promote best practices in functional programming and modern software development methodologies.

What we require from the candidate:

• C# Developer with strong experience in Reactive Extensions (RX).
• Architectural experience in Service-Oriented Architecture (SOA).
• Experience with Actor Models (Orleans, Akka.NET).
• Solid understanding of Real Time systems, performance optimisation, and memory management.
• Strong knowledge of design patterns and computer science fundamentals.
• Experience in TDD and UI automation.

Next steps

If you are interested in applying for this position and meet the criteria outlined above, please click the link to apply and we will contact you with an update in due course.

This client will only accept workers operating via an Umbrella or PAYE engagement model.

AMS, a Recruitment Process Outsourcing Company, may in the delivery of some of its services be deemed to operate as an Employment Agency or an Employment Business.