Junior / Mid-level Front Office Python Engineer (R&D / Trading Systems)

Job Title: Python Developer – Front Office R&D Trading Systems   Location: London, UK   Employment Type: Permanent or Contract   About Margo MARGO is a tech-native consultancy delivering high-value-added IT expertise to the financial services industry. We specialize in complex Front Office environments where software engineering, quantitative logic, and production robustness intersect. Our consultants work closely with trading and research teams on real-time trading platforms, pricing frameworks, and analytical systems.   The Role You will join a Front Office R&D and Trading Technology environment, designing, maintaining, and evolving the ecosystem used by traders and quantitative teams. This role combines 70% Development & Engineering with 30% Production Support, giving you strong ownership of the platform.   The environment is characterized by rapid iterations, direct interaction with traders, and high reliability constraints. You will work primarily in Python, developing core frameworks, analytical libraries, and monitoring tools.   Key Responsibilities Development & Engineering (Approx. 70%) - Design, develop, and maintain Python-based core libraries and frameworks. - Work closely with traders and research teams to gather requirements for new analytics and trading tools. -Improve the performance, scalability, and maintainability of the Python platform. -Enhance existing monitoring, analysis, and control tools to support research workflows.   Support & Production (Approx. 30%) -Provide L1/L2 support to Front Office users to ensure system stability during market hours. -Investigate and resolve production incidents efficiently. -Develop tools to improve system reliability and operational efficiency. -Contribute to the evolution of performance-sensitive and low-latency setups.     Requirements Essential Skills: Strong Python Proficiency: Expertise in core Python development and performance-aware coding. Linux/UNIX: Solid knowledge of Linux environments for production and debugging. Database Skills: Experience with SQL and relational databases. Production Experience: Ability to work under pressure with strong troubleshooting and analytical skills. Communication: Clear communication style with a structured problem-solving mindset.     Valued (but not restrictive): Experience in Front Office R&D or Electronic Trading environments. Ability to read and interact with C++ code. Knowledge of distributed architectures, caching, or in-memory data handling. Understanding of financial market concepts.     Education - Degree (or equivalent) in Computer Science, Engineering, Mathematics, Physics, or a related quantitative discipline.   Why Join Margo?   High Impact: Work directly with traders and quantitative teams in a demanding Front Office environment. Balanced Role: A mix of technical development and production ownership ensures you see the immediate impact of your work. Career Growth: Benefit from a human-sized structure with close follow-up and tailor-made training paths.   Please note - We do not offer visa sponsorship for this position.   Interested? Motivated? Apply on our website or at staff.uk@margo.com