Senior Software Engineer with C# .net Fixed Income FX

Company: Nexus Jobs
Apply for the Senior Software Engineer with C# .net Fixed Income FX
Location: London
Job Description:

Overview

In this role you will help shape and modernize the in-house middle office platform for a fast-growing FX brokerage. You’ll work closely with traders and cross-functional teams to deliver scalable, production-ready software that supports pricing, reporting, and integration with trading platforms. The position offers autonomy and a chance to make a tangible business impact within a dynamic team. You’ll contribute to FX and fixed income projects, with opportunities to learn and apply domain knowledge in a delivery-driven environment.

Responsibilities

  • Re-architecting and building the in-house middle office platform and integrating with a new trading platform
  • Developing pricing toolsets
  • Integrating to external reporting/tradeflow and pricing APIs
  • Maintaining the company’s daily operation on the existing platforms

Key requirements

  • 3–5 years of experience with Microsoft web technologies (C#, ASP.NET Core MVC)
  • Relational database experience (SQL Server)
  • Ability to build relationships with stakeholders (sales, brokers, middle office, external vendors)
  • Ability to produce clean, well-written, fully tested production-ready software
  • Stakeholder relationship management
  • Resilience and collaboration
  • Delivery-focused mindset
  • C#
  • ASP.NET Core MVC
  • SQL Server

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Posted: September 26th, 2026