Python Developer – Fixed Income Trading Technology job at London Full Time

Python Developer – Fixed Income Trading Technology

We are currently recruiting for a Python Developer to join the Fixed Income trading technology team within a leading international Investment Bank.

This is a core software engineering role focused on building production trading systems.

We are looking for a core Python engineer who enjoys owning components, improving systems, and working closely with the business in a fast-paced trading environment (this is not a quant, data engineering or AI/ML role).

You will sit within Front Office Technology supporting the Fixed Income trading desk which develops the core platforms that underpin trade capture, execution workflows, pricing distribution and integration across the trading stack.

You will:

1. Develop production grade object-oriented Python applications
2. Design scalable, resilient backend services
3. Improve system performance and reliability
4. Take ownership of defined components and services
5. Deliver enhancements and new functionalities
6. Contribute to design discussions and technical improvements
7. Work directly with traders and senior technologists
8. Participate in code reviews and engineering standards
9. Contribute to testing, CI/CD, and release processes

Essential:

1. Python development experience within a trading environment
2. Strong OO production Python
3. Experience building backend or distributed systems
4. Solid understanding of threading, concurrency, and performance optimisation
5. Business knowledge of at least one: Fixed Income, FX, Rates

This is a PAYE contract via an Umbrella