C# C++ Software Developer

Company: Quant Capital
Apply for the C# C++ Software Developer
Location: London
Job Description:

Overview

In this role you will build next-generation trading systems for a London-based algo trading business. You will work in a small, high-performing team to influence technology choices and contribute to high-throughput, low-latency infrastructure. Expect exposure to trading data flows and a fast-paced fintech environment with meaningful impact on traders and the bottom line. This is a unique chance to shape trading infrastructure within a growing, autonomous culture.

Responsibilities

  • Develop and maintain C# and C++ trading systems with a focus on high throughput
  • Work on messaging and high-transaction-volume components
  • Collaborate in Agile/Scrum teams and apply Test Driven Development (TDD) using NUnit or equivalents
  • Engage with data flows from Bloomberg and other trading infrastructure
  • Contribute to OO development, server-side coding, and noSQL data stores
  • Influence technology choices and work with cross-functional stakeholders
  • Support the growth phase of the trading business and solve performance challenges

Key requirements

  • Computer Science degree from a top-tier UK university
  • 5 years of commercial software development experience
  • Proficiency in C# and C++
  • Experience with messaging or high transaction volume systems
  • Strong multithreading capabilities
  • Experience in financial technology or trading tech (preferred)
  • Experience in Agile/Scrum development environments
  • TDD experience with NUnit or equivalent
  • NoSQL experience
  • SQL (SQL Server 2008) experience
  • Location: London
  • autonomy
  • strong collaboration
  • ability to communicate with cross-functional teams
  • C#
  • C++
  • multithreading

Posted: September 14th, 2026