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.

Lead architecture, build, and operate a production agentic AI platform for banking. Hands-on engineer-manager role: design scalable cloud-native systems, integrate LLMs/agent frameworks, enable enterprise data integrations, recruit and mentor engineers, ensure compliance/security, and measure business KPIs.

Senior product leader responsible for global eCommerce Commercial Cards strategy and growth. Drive commercialization of VCN/mVCA and new payment use cases, lead platform modernization and API-first initiatives, develop go-to-market and sales enablement, build strategic fintech and aggregator partnerships, and coordinate global teams to expand market reach and improve client experience.

Lead strategy, product development, risk controls and commercial growth for Citi's UK & Europe domestic payments portfolio. Manage end-to-end delivery, stakeholder engagement, regulatory projects, P&L growth, and reporting while ensuring market-aligned product architecture and strong risk management.

The FX Risk Java Developer (VP) will develop high-performance Java applications for global banking, focusing on risk calculations and resilient systems. Responsibilities include designing data structures, implementing algorithms, and supporting projects in a front office environment.

Lead design and build robust, high-quality margin and collateral systems. Develop RESTful APIs, event-driven microservices and micro-frontends, apply TDD and clean code, collaborate with product and global teams to automate post-trade processes and improve performance and resiliency.

The IT Project Tech Lead oversees Jira Cloud migration, manages complex projects, ensures compliance, and liaises with technology leadership, delivering governance and reporting.

The role involves the technical implementation of FX trading systems, collaboration with teams, system architecture design, and enhancing deliverable quality. Candidates should have experience with FX, ultra low-latency development, and strong communication skills.

The IT Project Tech Lead develops IT work plans, interfaces with project staff, facilitates process improvements, and influences strategic decisions while managing project risks.

The role involves designing and implementing Citi's algorithmic trading and Smart Order Routing platform, collaborating with trading desks, and optimizing trading strategies while maintaining high code quality.