Experienced Quantitative Researcher

• Design, test, and refine features and model architectures to improve prediction and execution performance
• Develop and improve research pipelines and tools for large-scale strategy simulation and optimization on a cutting-edge compute cluster
• Conduct deep-dive analyses of market data, live strategy behavior, and model outputs to guide iterative improvements
• Stay up-to-date on advances in quantitative methods, ML, and optimization — applying new insights to real-world challenges

Why This Role Is Unique

• Research First – This role is research-heavy — you’ll be focused on signal improvement, model fidelity, and hypothesis generation, not plumbing infrastructure or devops.
• Breadth and Depth – You’ll work at every level of the alpha stack: from feature design and statistical modeling to optimizer tuning
• Direct Feedback Loop – We deploy and iterate quickly. Your work will feed directly into live strategies and have measurable real-world impact
• World-Class Environment - Join a high-talent, low-ego team with experience across elite trading firms, olympiads, and academic research

• 2-7 years of experience in quantitative research, applied ML, or statistics
• Fluency in Python and/or C++, with the ability to translate research concepts into performant, production-ready implementations
• Strong knowledge of algorithms, linear algebra, statistics, and optimization techniques
• Ability to uncover meaningful structure in noisy, high-frequency market data — from alpha signal extraction to modeling order book behavior
• Can take research ideas from concept to experimental evaluation with minimal supervision

Signals of Excellence

• Track record of PNL generation using model-driven strategies
• Outstanding academic record in a quantitative field
• Strong performance in competitive programming or quantitative olympiads

Company Culture & Team Fit

We’re a close-knit team that values

• High ownership and initiative
• Curiosity, intellectual honesty, and rapid learning
• Clear, direct communication
• Working together toward shared goals – no ego, no politics

We hire people who love building, solving, and improving — and who want to learn from and contribute to a team of exceptional peers.

• Very competitive compensation with strong upside based on contribution and performance, comprehensive benefits package.
• Free lunch ordered to the office every day.
• Opportunity to work with cutting-edge technology in a challenging and rewarding environment.
• Chance to make a significant impact on the firm's trading performance.
• Collaborative and intellectually stimulating work environment.
• Competitive Annual Leave and Pension Contribution
• High-spec office with state of the art equipment and standing desks
• Monthly team breakfast
• Regular London onsites with focus groups in different business coinciding with team dinners and evening events
• Annual Company Offsite in luxury location
• Inter-office travel encouraged to promote the Selini culture and cross-business unit collaboration

Selini is a global trading firm focused on systematic trading and venture investing, all within the digital assets space.