We are Pinely, a high-frequency algorithmic trading firm based in Amsterdam. Our team specializes in developing robust and adaptive strategies applicable across a wide range of financial instruments and exchanges. We actively support the Olympiad movement, and many of our colleagues are prize-winning mathematicians, researchers and engineers. Researchers at Pinely benefit from working in a fast-paced HFT environment, where the impact of their ideas is quickly visible in production. The research teams are supported by a world-class infrastructure group that ensures smooth deployment and reliable experimentation at scale. Our flat organizational structure encourages autonomy, creativity, and direct ownership. We value an informal, idea-driven culture where innovation is celebrated and every contribution matters. About the role: We're looking for a Lead Quantitative Developer to join one of our trading teams - someone who combines deep technical ownership with the ability to grow and lead people. The team is intentionally small by design - close mentorship, no bureaucracy. Great leadership here means staying in the trenches, not stepping away from them. We're building toward a research lab culture. That means: understanding why something works, not just making it work. Reducing vague problems to core uncertainties before writing code. Intellectual honesty - with yourself and in the code you review. And the courage to push back and own decisions when it matters. What you'll do Owning and evolving the team's strategy codebase with direct P&L impact Decomposing research and production problems into concrete, delegatable tasks with clear success criteria Growing QDs on the team - understanding their strengths, motivations, and career goals; giving regular feedback that amplifies rather than just corrects Prioritizing QD capacity across competing demands: research requests, production stability, infra timelines Driving alignment with infrastructure and research teams through influence, not hierarchy Accelerating the research cycle using in-house AI development tools - agentic coding assistants, end-to-end AI-driven workflows Independently building and shipping strategy improvements where engineering quality has direct trading impact What we're looking for What we're looking for: Strong mathematical and algorithmic thinking; solid grasp of statistics and probability Ability to write production-quality C++ and Python 3 Experience delegating technical work - not just assigning tasks, but framing problems so others can own them Track record of growing junior and mid-level engineers Deep systems understanding: ability to navigate the full stack from model training and simulation through to production - and reason about how a change at one layer affects others Willingness to dive deep into market microstructure and strategy details Experience with or strong interest in ML/AI tooling in research workflows What we offer: A dynamic and international environment within a fast-growing tech company Salary at the upper end of the market, along with significant bonuses twice a year Freedom to shape internal culture and create meaningful employee experiences, team-building activities Health insurance, reimbursement of sports expenses; coverage for language courses A supportive, experienced team that values collaboration - and where your impact will be visible every day If you're ready to lead at the intersection of engineering excellence and people growth - we'd love to talk!