OO Core Python Developer - Fixed Income

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 and enhancing production trading systems. Please note this is not a quant, data engineering or AI/ML role, 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. You will sit within Front Office Technology supporting Fixed Income trading desks. The team develops and maintains the core platforms that underpin trade capture, execution workflows, pricing distribution, and integration across the trading stack. You will:

• Take ownership of defined components and services

• Deliver enhancements and new functionalities

• Contribute to design discussions and technical improvements

• Partner directly with traders and senior technologists

• This role would suits someone with solid Python experience who is ready to step up in ownership and influence. Responsibilities

• Develop production grade object oriented Python applications

• Design scalable, resilient backend services

• Improve system performance and reliability

• Participate in code reviews and engineering standards

• Contribute to testing, CI/CD, and release processes

• Provide 2nd/3rd line support where required

• Python development experience within a trading environment
• Strong OO production Python
• Experience building backend or distributed systems
• Solid understanding of threading, concurrency, and performance optimisation
• Business knowledge of at least one: Fixed Income, FX, Rates, Crypto Please submit your CV immediately to be considered for this role