Top Tech Jobs & Startup Jobs in London

Lead design and development of low-latency, event-sourced microservices for algorithmic trading. Hands-on coding (primarily Java or Rust), performance tuning, market-data handling (KDB), integration, mentoring, and architectural leadership to enable low-latency eTrading platforms and related simulation/replay utilities.

Develop, maintain, and optimize counterparty credit risk applications; enhance CI/CD pipelines; expand and run unit/regression/integration tests; profile performance/memory; document systems; integrate quant model updates; support cloud transition and act as SME for stakeholders.

Provide L1/L2 application support for the Commodities trading platform (Openlink and risk systems). Troubleshoot incidents, monitor system health, support batches and deployments, perform root cause analysis, maintain runbooks, participate in on-call rotations, and collaborate with traders, developers, and infrastructure teams to ensure stable front-office operations.

Design, build, and maintain a high-performance distributed calculation engine that executes massive risk computations; optimize distribution, scale platform, mentor engineers, lead strategic improvements, and provide specialized customer support and operational troubleshooting.

Design, build, and maintain scalable, secure full-stack applications using Java and Angular. Lead integration and deployment of agentic AI, implement microservices and event-driven architectures, collaborate with data scientists, and promote CI/CD, testing, security, and best practices. Mentor developers and support the full software lifecycle in a hybrid enterprise environment.

Lead valuation control for EMEA equities inventory: validate market data, design and implement valuation methodologies, controls and remediation, manage stakeholders and offshore team, escalate discrepancies, and lead cross-functional projects. Ensure regulatory and audit compliance and provide technical challenge to business valuation practices.

Build end-to-end testing, evaluation, and feedback systems for a global GenAI assistant. Design data pipelines, APIs, and dashboards; own features from design to production; ensure safety, compliance, and quality; provide technical leadership and mentor peers.

Lead the Securities Finance Technology division, driving strategy and development of Agency Lending and Collateral platforms, managing global teams, and transforming legacy systems into a modern architecture.

Lead an application development team to build and evolve next-generation trading applications, focusing on microservices and automation in finance.

Lead product strategy and roadmap for AI-driven Capital Markets tooling. Bridge business and engineering, prototype AI solutions, guide cross-functional teams to production, ensure compliance, and drive adoption to improve ECM deal execution, financing workflows, and client servicing.