Top Python Jobs in London

Lead quality engineering for SDK teams by building CI/CD, automation, tests, diagnostics, and reporting. Improve test strategy, observability, developer feedback, and reliability across Linux and Windows. Investigate and fix build/test/deploy issues, mentor peers, coordinate cross-site initiatives, and apply AI-assisted tools responsibly to increase engineering productivity and test effectiveness.

Senior individual contributor who architects, designs, and ships scalable, high-performance backend systems; drives reliability and performance improvements; leads AI/LLM integrations; mentors engineers and sets technical direction across multiple teams.

Design, develop, deploy and support the iSAM Vector systematic trading platform across the full trading lifecycle (market data ingestion, signal computation, portfolio/position management, order generation, execution, trade capture). Collaborate with Research, Quant Development and Execution teams, deliver enhancements, support production systems on a rota, and contribute to platform architecture and reliability.

Senior QA Automation Engineer to own and extend an in-house automated testing platform for a hedge-fund client. Full-stack development (React/JavaScript front end, Python back end), CI/CD and IaC (GCP, Terraform), AI-driven requirement interpretation and test generation, integrations with toolchain and enterprise design system, governance, auditability, and production adoption. Mentor a predominantly manual QA team and deliver production-grade, agent-orchestrated testing capabilities in a fast-paced London-based environment.

Lead liquidity and market risk analysis, stress testing, and model ownership for CLS. Assess onboarding impacts, respond to market events, automate LMR processes, implement benchmarking models, and produce risk reporting for stakeholders and regulators.

Develop and support Python-based data analytics and Scala-based risk and P&L systems for EU flow trading. Improve workflows, analyze large datasets, support production trading applications, collaborate with trading, sales, operations and other Strats to drive P&L opportunities and system improvements.

Lead end-to-end technical onboarding and connectivity integrations for institutional clients and trading counterparties. Manage implementations involving APIs, FIX, platform configuration, timelines, and stakeholder coordination. Configure and validate client environments, troubleshoot integration issues with engineering, and produce onboarding documentation and best practices.

Provide senior-facing geopolitical analysis on China and the wider Asia-Pacific, producing intelligence briefings, data-led insights, scenario and forecasting analysis, and client-ready deliverables. Advise public and private clients on political, economic, trade, technology and security risks; use quantitative and qualitative methods and collaborate across internal and external networks. Represent TBI in briefings and support product and business development.

Lead credit strategy for credit card products by designing underwriting and limit approaches, analysing portfolio performance and profitability, building NPV and forecasting models, developing segmentation, running deep-dive analyses, partnering with Product/Engineering/Data teams, and presenting recommendations to senior stakeholders while ensuring regulatory and governance alignment.

The role involves analyzing trading activity, developing models for pricing and risk management, statistical analysis, and collaboration with traders and technology teams.

Lead pricing strategy and implementation across Academic products (journals, books, OA), develop AI-driven pricing models and automation, define and track pricing metrics, influence cross-functional stakeholders, manage a dotted-line analytics manager, and deliver global pricing initiatives.

Own and build end-to-end credit and fraud models for a B2B BNPL product: design, deploy, monitor, and improve supervised ML on tabular and time-series data, collaborate with product and risk, and develop pipelines and monitoring for portfolio performance.

Lead the development and architecture of new data services and products around clinical insights, focusing on data analysis and reporting.

Build, maintain, and operate Mimica’s multi-region Kubernetes platform (GKE/EKS), infrastructure-as-code, GitOps pipelines, and observability. Support engineering teams, triage incidents, migrate IaC to Crossplane, drive FinOps, and design BYOC/single-tenant access patterns while automating work with Python tooling.

As a Full Stack Engineer, you will design and develop software solutions for trader efficiency, collaborate with stakeholders, ensure code quality, mentor junior developers, and manage full software lifecycle in a DevOps-focused environment.

Design, implement, support and develop complex machine‑learning models and applications for retail clients. Collaborate with client teams to build scalable, reusable solutions, translate analytics into clear business outcomes, and lead new workstreams from definition through delivery.

Lead a Python engineering team, guiding technical solutions, tackling challenges, managing technical debt, and ensuring software quality while fostering a high-performing culture.

The Incident Response Consultant collects and analyzes data, identifies root causes of cyber incidents, and reports findings to clients, ensuring effective incident management and fostering strong client relationships.

Develop and implement quantitative models for hedging strategies, analyze market data, and monitor power markets to optimize performance and inform trading decisions.

The Scientist drives innovation in genomic analytics, focusing on polygenic risk scores and targeted therapeutics, utilizing statistical techniques for data analysis.

As a Senior Scientist, you will innovate and develop methods for Polygenic Risk Scores using genomic and clinical data, applying statistical techniques and leading projects within the team.

Design and implement flight software for satellites, ensuring autonomous operation and safe data management while collaborating across technical teams.

Design and optimize satellite ADCS architecture, develop control algorithms, integrate hardware, validate systems through testing, and support on-orbit operations.

The GNSS Engineer will develop and certify next-gen GNSS applications, conduct testing, support software development, and engage with customers across lab and field environments.

This role involves supporting technical pre-sales activities, running demos, collaborating with clients on system integrations, and designing implementation plans for ERP systems.