Principal Python Engineer, London, Europe's Largest Equities Exchange
We are working exclusively with one of the world's largest exchange operators on a Principal Python Engineer hire in London. This is a senior individual contributor role within a small, highly skilled engineering team building and expanding the data pipeline and event streaming infrastructure that powers the largest equities exchange in Europe.
The Role
You will lead complex engineering projects end to end, working closely with business development and sales teams to deliver new products and features, and mentoring engineers across Europe and the US. The team takes software craftsmanship seriously — testable, maintainable code, pair programming and TDD are core to how they work.
Tech Stack
Expert Python, advanced SQL, deep Linux knowledge
PostgreSQL, Snowflake
Apache Kafka, Apache Airflow
Django, Flask or FastAPI
TDD, BDD, pair programming
Java familiarity a plus
What They Are Looking For
Principal or Staff level Python engineer with strong leadership skills
Degree in Computer Science or related field preferred
Financial markets experience a strong plus — market data, order management, algorithmic trading or financial systems integration
Someone who takes genuine pride in code quality and engineering standards
The Package
Competitive salary and incentive compensation
Private medical including dental, private GP service, life insurance
7% pension contribution, no employee contribution required
25 days holiday rising to 30, complimentary lunch daily
4 days in office, London
Note: interviews are starting in 1-2 weeks so worth reaching out now. Send your CV across and we will be in touch.
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