Python Developer - Fixed Income - Investment Banking

Vertus Partners; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Vertus Partners is seeking a Python Developer to join its Fixed Income trading technology team in London. This core software engineering role focuses on building and enhancing production trading systems.

You will sit within Front Office Technology, owning components, delivering enhancements, and collaborating with traders and senior technologists in a fast-paced trading environment.

Qualifications

• Solid Python experience with ownership and influence in the codebase.
• Experience in a trading environment or financial systems.
• Understanding of backend/distributed systems and scalability.
• Knowledge of threading, concurrency, and performance optimization.

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.
• Python development experience within a trading environment.

Skills

Python

OO programming

Concurrency

CI/CD

Tools

Git

CI/CD pipelines

Job description

Contact email:

Job ref:

PD/GA/1108

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 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
• 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

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