Top Tech Jobs & Startup Jobs in London

Lead the design, development, testing, and support of Citi’s low-latency electronic trading platform. Build algorithmic trading, smart order routing, connectivity, market data, monitoring, reconciliation, and recovery systems. Collaborate with traders, quantitative researchers, clients, infrastructure, production support, and QA teams. Improve performance, reliability, CI/CD, Agile practices, and AI-assisted software development while supporting global, cross-regional delivery.

Lead the design, development, and delivery of complex application systems within Citi’s XVA Technology team. Define technical solutions, resolve high-impact problems, establish coding and testing standards, assess risks, and ensure regulatory compliance. Partner with business and management teams, mentor engineers and analysts, and guide end-to-end technology project delivery. The role also involves evaluating AI-assisted development tools and implementing agentic AI capabilities safely across the engineering lifecycle.

Lead product development for post-trade Derivatives Clearing (Futures, OTC, FXPB), owning roadmap, P&L, revenue projections, and regulatory compliance. Drive platform enhancements, connectivity to clearinghouses, margin/treasury workflows, collateral optimization, MIS automation, stakeholder coordination (Operations, Technology, Sales), testing/releases, and client-focused product awareness while managing risks and control requirements.

Develop and support scalable, cloud-native FX cross-border payments and custody solutions using Java and modern technologies. Responsibilities include architecture, coding, testing, production support, lifecycle improvement, stakeholder collaboration, mentoring, and implementation of automation and data-driven solutions. The role requires ultra-low-latency development, messaging, databases, caching, AI coding tools, and strong systems knowledge.

Support Banking deal teams by reviewing potential engagements for transactional conflicts and reputation risk, driving business selection decisions, coordinating with senior management and control functions, performing qualitative analysis, advising on risk mitigation, verifying documentation, tracking metrics, training bankers, and helping improve conflict clearance systems and policy.

Lead centralized business selection and conflict decisions for Banking & International; analyze transactional and reputational risks, liaise with deal teams and control functions, track indicators, train bankers, and support policy and system enhancements.

Leads Citi’s global Trade and Working Capital Technology organization of more than 800 engineers across 90+ countries. Responsibilities include setting technology strategy and architecture, modernizing legacy systems, driving digitization and transformation, overseeing delivery and governance, improving client experience, meeting regulatory commitments, managing investment and operating models, and developing organizational talent and performance.

Provides comprehensive administrative support to senior management and an entire department. Responsibilities include calendar and meeting coordination, travel arrangements, expense reconciliation, invoice processing, document and presentation preparation, supply ordering, special projects, and training administrative staff. Ensures compliance with applicable policies, laws, and regulations while safeguarding company and client assets.

The 10-week Citi Services Summer Analyst Program provides training and hands-on experience in market research, financial analysis, business development, client data analysis, product commercialization, process optimization, and stakeholder reporting. Analysts may evaluate AI-enabled tools and automation opportunities, support service improvements, and present data-driven insights to leadership. The program also includes networking, mentorship, and professional development, with potential progression to a full-time Analyst role.

Develop and deploy greenfield full-stack services supporting trader workflow tooling for Citi’s Strategic Equity Solutions business. Responsibilities include designing scalable software, collaborating with business stakeholders, writing high-quality code, mentoring engineers, evaluating new technologies including AI tools, and owning the full software lifecycle through testing, deployment, and monitoring. The role emphasizes Python or Kotlin backend development, frontend frameworks, microservices, Kubernetes, OpenShift, and DevOps practices.