Senior Python Quant Developer: Fixed Income, ProductionReady

Quant Capital; United Kingdom; On-site; GBP 90,000 - 130,000; Full time

Job summary

Quant Capital is urgently looking for a Senior Python Quant Developer to join a rapidly growing fintech in the UK.

You will re-engineer a complex fixed-income model from C# into clean, modular production-ready Python, collaborating directly with quants in a small, high-impact team.

This hands-on role emphasizes ownership, performance improvements, testing and maintainability in a data-driven environment.

Qualifications

• Proficient in Python with strong OO design principles.
• Experience with complex numerical or data-heavy systems.
• C# experience and ability to translate to Python.

Responsibilities

• Re-engineer a C# quant model in Python.
• Refactor and modularise the existing codebase.
• Collaborate with quants to productionise the model.
• Improve performance, testing, and maintainability.
• Build data validation and orchestration processes.

Skills

Python

C#

Object-oriented programming

Pydantic

Tools

Pydantic

Job description

Quant Capital is urgently looking for a Senior Python Quant Developer to join a rapidly growing fintech in the UK.

You will re-engineer a complex fixed-income model from C# into clean, modular production-ready Python, collaborating directly with quants in a small, high-impact team.

This hands-on role emphasizes ownership, performance improvements, testing and maintainability in a data-driven environment.