X4 Alpha
Senior ML Quantitative Researcher
Skills
16 days ago
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Important information
Contract type:
Permanent
Location:
London, UK
Work mode:
Onsite
Published on:
9 October 2026
What they need
Senior ML Quantitative Researcher | London | Confidential Client
About the firm
A privately-owned, founder-led quant trading firm with 10+ years in global electronic markets. It takes no outside investors, runs fully automated strategies, and has one of the best revenue-per-head ratios in systematic trading. It is now building out in London.
The role
Own research end to end, from idea to live strategy. You will:
- Build predictive models and alpha signals on large-scale market data, using neural networks and tree-based methods
- Take your work through backtesting, productionisation and live monitoring
- Write production-quality code in a small, low-ego team with high autonomy
Who we want to hear from
Senior research or applied scientists from tech, AI or research labs who:
- Have a PhD or equivalent depth in ML, statistics, physics, maths, CS or engineering
- Have shipped models into production on noisy, large-scale data
- Write strong Python, and are comfortable in C++ or willing to learn it
- Want their work to move the P&L directly
No finance background is needed.
Why join
- Small team, high impact, with research visible and rewarded
- Researchers who ship, with no wall between “quants” and “devs”
- Highly competitive compensation with strong upside
- Very low team turnover
To apply
Message me or send your CV for a confidential conversation. I’ll share the firm’s name once we’ve spoken.
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