Real job — pulled straight from Old Mission Capital LLC’s careers page · Verified July 13, 2026 · No reposts.
Job description
Old Mission Capital LLC is hiring a Python Software Engineer — a full-time, based in London role. Apply directly on Old Mission Capital LLC's careers page below.
Python Software Engineer
Location: London
Department: Technology
Old Mission is a global proprietary trading firm that leverages state-of-the-art technology and research to identify and execute profitable trading strategies across multiple asset classes around the world. Our offices in Chicago, New York, and London are all composed of naturally-curious individuals who thrive in a team environment and constantly strive for improvement.
About the Position
We are on the lookout for Software Engineers who excel in Python. As a Software Engineer, you'll play a pivotal role on your team, taking ownership of cutting-edge projects. Your primary responsibilities will encompass the refinement and advancement of our trading systems and mission-critical applications. Additionally, you'll collaborate closely with quants, traders, and research teams to bolster our systems' adaptability and scalability, all while contributing to the development of innovative trading applications.
Required Skills
- Bachelor's degree in Computer Science, Mathematics, or a related Engineering/Science discipline
- A minimum of 3 years of professional Python experience in a production environment
- High proficiency in Python on Linux Platforms
- Familiarity with relational databases (e.g. PostgreSQL, MySQL, etc.)
- Exceptional written and verbal communication skills
- A collaborative team player with a knack for owning and driving exciting projects
- Thrives in a fast-paced work environment, showcasing effective problem-solving abilities
Benefits and Perks
- Competitive salary with discretionary annual bonus
- Fully paid private medical, dental, vision with extended coverage and life insurance
- Robust Pension Scheme, income protection, and salary exchange
- Fully stocked kitchen and free on-site lunch daily
- Season Ticket Loan Scheme
- Tuition Reimbursement Program
- Cycle to Work Scheme
Old Mission is not accepting unsolicited resumes from any staffing/search firms. All resumes submitted by staffing/search firms to any employee at Old Mission via-email, the Internet or directly without a valid signed search agreement will be deemed the sole property of Old Mission, and no fee will be paid in the event the candidate is hired by Old Mission.
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Frequently asked questions
What skills are required for Python Software Engineer at Old Mission Capital LLC?
The required skills for Python Software Engineer at Old Mission Capital LLC include: Python, Linux, PostgreSQL, MySQL, SQL.
What is the seniority level for Python Software Engineer at Old Mission Capital LLC?
Python Software Engineer at Old Mission Capital LLC is a Mid Level level position.
How do I apply for Python Software Engineer at Old Mission Capital LLC?
You can view the full description and apply for Python Software Engineer at Old Mission Capital LLC on EchoJobs: https://echojobs.io/job/old-mission-capital-llc-python-software-engineer-u4uty.