Quantitative Developer (London)

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Responsibilities

• Design, implement, and maintain high-performance services in Rust and Python for market-data ingestion, ML pipelines, and post-trade analytics
• Translate research prototypes into production-ready code, adding testing, monitoring, and CI/CD automation
• Optimise existing code for throughput, memory footprint, and reliability on distributed systems
• Collaborate closely with quantitative researchers to iterate on data pipelines, simulation frameworks, and performance diagnostics

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Mathematics, or a related STEM field
• 2-5 years of professional software-engineering experience, including production systems written in Python
• Proficiency in a systems language - Rust preferred (C++/Go also acceptable) - and the desire to deepen that expertise
• Strong computer-science fundamentals: algorithms, data structures, concurrency, networking, and performance profiling
• Experience working with real-time and historical market data or other high-volume time-series data
• Proficiency with Linux development, Git, containers, and CI/CD workflows
• Familiarity with SQL and at least one columnar or time-series data store (e.g., kdb+, ClickHouse, InfluxDB, Parquet/Arrow)
• Excellent problem-solving abilities, attention to detail, and clear communication skills

Nice To Have:

• Prior exposure with execution algos, TCA, order-routing, or market-impact modelling
• Knowledge of statistical or machine-learning libraries (NumPy, pandas, scikit-learn, PyTorch)
• Experience building distributed systems with message buses (Kafka, ZeroMQ) and asynchronous I/O
• Experience with cloud or on-prem orchestration and scheduling frameworks (Kubernetes, HT Condor, SLURM)

Benefits

Tower’s headquarters are in the historic Equitable Building, right in the heart of NYC’s Financial District and our impact is global, with over a dozen offices around the world.

At Tower, we believe work should be both challenging and enjoyable. That is why we foster a culture where smart, driven people thrive – without the egos. Our open concept workplace, casual dress code, and well-stocked kitchens reflect the value we place on a friendly, collaborative environment where everyone is respected, and great ideas win.

Our benefits include:

• Generous paid time off policies
• Savings plans and other financial wellness tools available in each region
• Hybrid working opportunities
• Free breakfast, lunch and snacks daily
• In-office wellness experiences and reimbursement for select wellness expenses (e.g., gym, personal training and more)
• Company-sponsored sports teams and fitness events (JPM Corporate Challenge, Cycle for Survival, Wall Street Rides FAR and more)
• Volunteer opportunities and charitable giving
• Social events, happy hours, treats and celebrations throughout the year
• Workshops and continuous learning opportunities

At Tower, you’ll find a collaborative and welcoming culture, a diverse team and a workplace that values both performance and enjoyment. No unnecessary hierarchy. No ego. Just great people doing great work – together.

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