Top Tech Jobs & Startup Jobs in London

Lead and transform Citi's securities settlements technology stack: architect, design, and deliver scalable, low-latency microservices; manage engineering teams; own L3 support, CI/CD, cloud deployments, stakeholder engagement, risk and regulatory compliance, and performance optimization.

Work across the full software lifecycle to build robust margin and collateral solutions. Collaborate with product teams and users, design and implement RESTful APIs, apply TDD and clean code, and handle data structures, algorithms and SQL. Adapt quickly in a fast-paced, changing environment and contribute to a strong global engineering culture.

Lead development for applications supporting finance desks, overseeing design and delivery of systems focusing on collateral management and optimization.

Lead low-latency systems and application framework engineering for algorithmic trading, focusing on Rust and Java within a high-performance architecture team.