Top Tech Jobs & Startup Jobs in London

Build, optimize, and support a scalable AWS cloud risk platform that computes risk for cash and derivative trades using Snowflake-stored data. Develop Python-based risk engines, improve distributed computation performance, reconcile outputs with legacy systems, troubleshoot pricing/risk issues, collaborate with IT teams, and participate in on-call support.

Join Jefferies UK Investment Banking team as an Associate focused on Investment Companies & Funds. Lead transaction execution for M&A, ECM, and fundraising; build complex financial models and valuations (DCF, comps, NAV, SOTP); prepare client materials; coordinate diligence; support origination and client coverage; mentor analysts and collaborate across teams. Requires strong modelling, valuation, and transaction execution experience in financial services or asset management.

Develop and optimize algorithmic trading software in modern C++ with strong focus on performance, memory management, and multi-threading. Prototype and analyze data using Python/Perl/Shell and SQL, apply ML frameworks, and collaborate globally. Recommend optimizations, use performance tools, and support low-latency trading systems.

Support the lead analyst covering Integrated Oil & Gas: maintain and develop Excel-based financial models, forecast commodity prices, contribute thematic and stock-specific research, assist client marketing and corporate access, and support Investment Banking and Corporate Broking colleagues.

Hands-on engineering leader responsible for designing, building, and operating cloud-native, event-driven platforms and user interfaces. Lead backend microservices (Java/Spring, Python), real-time data pipelines (Kafka), APIs (REST/OpenAPI/GraphQL/gRPC), and frontend components (Angular/React). Own end-to-end delivery, production support, CI/CD, observability, and mentor engineers while partnering with product and business stakeholders.