Top Tech Jobs & Startup Jobs in London

Lead and execute a multi-year GenAI strategy for COO Technology, build a production-grade shared AI platform, deliver enterprise-scale agentic and LLM solutions, ensure regulatory-compliant deployments, run AI governance, and recruit and operate a high-performing AI engineering organization with budgetary ownership.

Ownership and hands-on development of Core Prime Brokerage components using Java/Kotlin. Contribute to agile SDLC, CI/CD, and automated testing. Design, estimate, analyze tasks, collaborate with stakeholders, provide production support and incident resolution, perform code reviews, and coach junior team members.

Develop and maintain high‑performance trading applications for equities finance, collaborating with traders and global teams. Design, code, test (TDD/BDD), debug, and deliver solutions, mentor mid‑level engineers, and ensure compliance and risk-aware decisions.

Design, develop, and optimize a low-latency, high-throughput real-time FX options risk system. Provide architecture leadership, mentor engineers, collaborate with front-office trading and risk teams, implement stream processing solutions using Java, Kafka, Storm, and Couchbase, and ensure high availability, performance, and production reliability.

Develop and maintain derivatives credit risk applications, optimize performance, and support CI/CD processes while collaborating with front office teams.

Conduct equity research on European banks: build financial models, write reports, make investment recommendations, engage institutional clients, perform due diligence, track company events, attend conferences, and support senior analysts while complying with FCA/PRA certification requirements.

Lead and hands-on build enterprise-scale, cloud-native full-stack and Generative AI solutions. Provide technical direction across frontend, backend, APIs, platform and cloud services, drive platform adoption, DevSecOps and engineering excellence, and mentor senior technical leaders while delivering high-profile, business-critical programmes.

Provide legal counsel for Spread Products in Sales and Trading, ensuring compliance with laws and regulations while advising on business initiatives and risks.

Senior legal counsel providing subject-matter advice to Spread Products (credit trading) sales and trading globally. Advise on complex derivatives and structured-credit transactions, regulatory compliance, and risk management; collaborate with business, compliance, risk and regional/global legal teams; support strategic initiatives, escalate issues, and ensure adherence to laws, policies and ethical standards.

Develop tooling for Citi's developer community using Java and SpringBoot. Engage in all SDLC phases and serve as a trusted consultant, enhancing developer experience and fostering continuous learning.