Senior Python Developer ETrading in City of London, London

As a Senior Python Engineer, you'll be responsible for designing, developing and enhancing the batch processing and operational systems that support one of the world's leading exchange operators.

You'll:

• Design and build robust, highly reliable Python applications that underpin Client's Europe's trading operations.
• Collaborate closely with Product, Business Development and Sales teams to create innovative new exchange services and features.
• Champion software craftsmanship through clean architecture, maintainable code and rigorous testing practices.
• Participate in research and development initiatives, evaluating and implementing emerging technologies that can drive competitive advantage.
• Support critical production systems as part of a rotating support rota, responding to incidents and contributing to root cause analysis and continuous improvement initiatives.
• Work alongside talented engineering teams across our global organisation, sharing knowledge and driving technical excellence.

• Strong commercial experience with Python development.
• Passion for writing clean, maintainable and testable code.
• Solid understanding of Linux environments.
• Experience with SQL and advanced database querying techniques.
• Strong grasp of algorithms, data structures and software engineering fundamentals.
• Computer Science degree or equivalent technical background.

• Experience with Test-Driven Development (TDD), Behaviour-Driven Development (BDD) or similar testing methodologies.
• Experience implementing AI-enabled software development lifecycles and practical use of modern engineering tools such as Claude Code, OpenAI Codex, or similar AI-assisted development platforms.

• PostgreSQL and/or Snowflake.
• Modern Python web frameworks including Django, Flask or FastAPI.
• Event-driven architectures and streaming technologies such as Apache Kafka.
• Data orchestration and pipeline platforms such as Apache Airflow.
• Java development experience.
• Financial technology experience, including market data, order management, algorithmic trading, exchange technology, financial systems integration, regulatory compliance or related domains.

To find out more about Huxley, please visit (url removed)

Huxley, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC(phone number removed) England and Wales