Python Core Developer Jobs in UK 2026 (£200,000 Annually)

Passionate about high-frequency trading in cryptocurrency markets? A leading fintech seeks a Python Core Developer in London. Visa sponsorship is available for this high-performance greenfield role. If algorithmic trading excites you, this position offers exceptional earning potential.

About the Role

You will help build an automated trade reconciliation system from scratch. This greenfield project involves working closely with senior leadership, including the CTO. Additionally, the system will reconcile up to 100 million transactions daily. The solution is built in Python, interfacing directly with a C++ stack.

About the Hiring Firm

This fintech operates as an international algorithmic market maker in digital assets. It trades more than $5 billion daily across dozens of platforms. The company blends traditional financial market expertise with startup-like agility. It maintains a meritocratic culture focused on individual accountability and impact.

Job Duties

• Build an automated trade reconciliation system from the ground up
• Develop high-performance Python solutions reconciling millions of transactions
• Interface Python-based systems with an existing C++ technology stack
• Collaborate closely with senior members, including the CTO
• Work within a Linux-based development and deployment environment

Job Requirements

• 2+ years of experience with Python and SQL databases
• Solid understanding of Linux operating systems required
• Experience with reconciliation, risk, or middle office systems desirable
• Genuine passion for technology and financial markets required
• Strong interpersonal skills suited to a collaborative, intimate team

Click Here to Apply

Conclusion

This role suits developers ready to build critical systems from scratch. With exceptional pay and direct access to senior leadership, the stakes feel real. For Python engineers drawn to fintech innovation, this opportunity offers rare scope.

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