Top Tech Jobs & Startup Jobs in London

Lead and enhance derivative trading platforms in Equities Technology, collaborating with product teams and ensuring project delivery while adhering to architectural standards.

Lead observability strategy and delivery for Services Technology, building end-to-end payment monitoring, telemetry, SLOs, dashboards, and integrations across on-prem and cloud. Partner with SREs, developers, and central platform teams to reduce toil, improve MTTD/MTTR, embed telemetry, and drive adoption of observability tooling and AI/ML insights for critical payment flows.

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.

Develop and maintain high-performance low-latency electronic trading systems; collaborate with teams to enhance execution features and ensure platform reliability.

Build and maintain full-stack trading tools for systematic and credit portfolio trading. Collaborate with traders, quants, and product to define requirements, implement features (portfolio optimization, P&L analysis, recommendations), ensure production stability, and enable rapid, trader-friendly tooling using Java, Python, React, containerized deployments, and CI/CD.

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

Lead global trade data strategy and roadmap for TWCS, manage data managers, drive data governance, quality, architecture and analytics, partner with engineering and business stakeholders, deliver data products and reporting, and align data initiatives to business OKRs and regulatory requirements.

The Lead Counsel provides legal support to Citi's Commodities Business, offering guidance on legal risks, drafting contracts, and ensuring compliance with regulations.

The FX Risk Lead Java Developer designs and maintains Java microservices for high-throughput applications, optimizes data processing solutions, and ensures system reliability in a cloud-based environment.