Job Vacancy Senior Python Developer ETrading

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

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 | OC387148 England and Wales