Quantitative Developer

Vallum Associates; Greater London; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

A leading financial technology firm is seeking a Quantitative Developer to enhance trading and analytics platforms. The ideal candidate should have over 10 years of experience in financial services, particularly in developing high-performance trading systems using C/C++ and Python. The role involves optimization for low latency and close collaboration with research and trading teams. This position is hybrid with three days onsite in London.

Qualifications

• 10+ years of experience as a Quantitative Developer or Senior Software Engineer in financial services.
• Expert-level development in C and/or C++.
• Strong hands-on experience with Python in production.
• Deep knowledge of Linux systems and performance tuning.

Responsibilities

• Design and develop high-performance trading systems.
• Implement quantitative models using C/C++ and Python.
• Optimise applications for low latency and high throughput.
• Collaborate with quants and trading teams.

Skills

C and/or C++

Python

Linux systems knowledge

Shell scripting (Bash)

Git

Job description

Quantitative Developer

Location: London, UK (Hybrid - 3 days onsite per week)

Contract Type: Inside IR35

Experience

10+ years of professional experience as a Quantitative Developer or Senior Software Engineer within financial services.

Role Overview

We are seeking an experienced Quantitative Developer to build and enhance high-performance trading and analytics platforms. The role involves close collaboration with quantitative researchers and trading teams to deliver robust, scalable, and production-ready systems in a fast-paced environment.

Key Responsibilities

• Design, develop, and maintain high-performance trading, pricing, and analytics systems
• Implement quantitative models and strategies using C/C++ and Python
• Optimise applications for low latency, high throughput, and stability
• Work extensively in Linux environments, including automation via shell scripting
• Collaborate with quants, traders, and technology teams to productionise research
• Troubleshoot complex production issues and drive continuous performance improvements
• Adhere to best practices for code quality, testing, and version control using Git

Required Skills & Experience

• Expert-level development experience in C and/or C++
• Strong hands‑on experience with Python in production environments
• Deep knowledge of Linux systems, performance tuning, and debugging
• Proficiency in shell scripting (Bash or similar)
• Strong experience with Git and collaborative development workflows
• Proven experience delivering mission‑critical systems in financial services

Desirable Skills

• Background in quantitative finance, trading systems, or capital markets
• Experience with low‑latency architectures, multithreading, and concurrency
• Understanding of numerical methods, statistics, or financial models