Top Tech Jobs & Startup Jobs in London

Build and productionize quantitative trading tools, energy-market models, analytics, data pipelines, and visualization tools. Collaborate with traders, quants, and engineers to develop signal research, backtesting, risk and pricing integrations, and time-series data infrastructure. Monitor, test, document, and iteratively improve production models and tools based on trader feedback.

Supports day-to-day trading operations across multiple asset classes, including trade capture, reconciliation, pricing, settlements, PnL reporting, monitoring, and position management. Designs alerts and data integrity checks, collaborates with developers on databases and trading tools, and streamlines onboarding processes for traders, strategies, and products. Requires strong analytical, organizational, communication, and problem-solving skills in a fast-paced environment.

Build and improve proprietary trading tools for commodity trading desks. Collaborate with developers, technology leaders, traders, and researchers to define technical needs and deliver platform functionality. Design greenfield solutions, extend existing codebases, and use AI tools while maintaining ownership of code quality, verification, deployment, and production support. The role is onsite five days per week in London.

Build and operate real-time risk applications for PnL, VaR, greeks, dashboards, alerts, and monitoring. Responsibilities include full-stack development, Python backend and financial model integration, responsive frontend interfaces, DevOps, CI/CD, infrastructure, observability, incident response, AI-assisted development, LLM API integration, testing, and collaboration with quantitative and market risk teams.

Designs, builds, maintains, and improves Windows, virtualization, cloud, data center, identity, and access infrastructure. Responsibilities include automation, infrastructure as code, security hardening, patch remediation, monitoring, performance tuning, technical documentation, mentoring junior staff, and on-call support.

Provide first-line IT support to end users by logging and prioritizing requests, troubleshooting hardware and application issues, managing desk setups, escalating complex problems, maintaining support records and knowledge-base content, and assisting with IT asset inventory. The internship emphasizes IT operations, customer service, communication, and problem-solving in a collaborative environment.

The role involves designing, implementing, and deploying a core trading platform in C++. Responsibilities include troubleshooting and collaborating with cross-functional teams to enhance trading systems.

The Portfolio Manager will manage and scale proprietary trading strategies, optimize execution models, and own risk and P&L while collaborating with other traders and engineers.

Lead design and build of a greenfield, ultra-low-latency C++ trading platform covering execution, market data, order and risk management. Implement direct exchange connectivity, optimize microsecond/nanosecond performance, collaborate with traders and quants, own systems end-to-end from design through production support for live trading.

Summer trading internship rotating across at least two commodity desks. Build and maintain analytics dashboards, back-test trading ideas, present results, and learn from senior and junior traders. Onsite in London with mentorship and potential full-time consideration.