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Quant Developer

LondonPosted today

GSR Markets GSR Markets brings together market making, high-touch OTC trading, and treasury solutions for clients across the crypto ecosystem, alongside our own proprietary trading activity. We provide liquidity across more than 60 exchanges globally, execute bespoke and complex trades with dedicated coverage, and support clients with treasury management, liquidity planning, and risk strategies as their businesses scale.

Performance runs through everything the division does, measured in uptime, execution quality, and the strength of the relationships we build with clients and counterparties. It is where GSR's market expertise, and our own capital, translates most directly into results.

The Opportunity & Scope

Join a high-performance team at the intersection of trading and technology. You will work closely with traders and engineers to design, test, and implement strategies across market-making, prop, and OTC, and contribute to the low-latency systems (built in Rust) that put those strategies into production.

Success in this role requires strong quant and market intuition, curiosity, and a proactive mindset. You'll be working on complex, performance-critical problems where quick learning, ownership, and continuous improvement are key to making an impact.

Key Responsibilities

  • Research, build, and refine trading strategies across market-making, prop, and OTC.
  • Analyze market microstructure and pricing to identify and evaluate trading opportunities.
  • Work closely with traders, researchers, and engineers to implement strategies into live trading systems, contributing to development in Rust where needed.
  • Build tools and infrastructure to support research, including analytics and optimisation workflows.
  • Monitor live strategy performance and investigate issues in real time, contributing to the stability and reliability of live trading.

Qualifications & Requirements

Rust experience is beneficial; if not, a demonstrable interest in mastering it is essential.

  • Strong quantitative foundations, with the ability to reason rigorously about pricing, risk, and market structure.
  • Genuine interest in trading systems, financial markets, or market microstructure, with familiarity in concepts such as limit order books, pricing, or real-time systems.
  • Experience writing efficient, performance-conscious code in at least one language (e.g., Python, C++, Rust) - comfort picking up new languages is valued.
  • Strong foundations in algorithms and data structures.
  • Degree in Mathematics, Physics, Computer Science, or a related field - or equivalent practical experience.

Perks & Compensation

  • A collaborative and transparent company culture founded on Integrity, Innovation, and Performance.
  • Benefits such as Healthcare, Dental, Vision, Retirement Planning, 30 days holiday, and free lunches when in the office (benefits vary depending on employment location).
  • Regular Town Halls, team lunches, and drinks.
  • A Corporate and Social Responsibility program as well as charity fundraising matching and volunteer days.

GSR is proudly an Equal Employment Opportunity employer. We operate a meritocracy; all aspects of people engagement from the decision to hire or promote as well as our performance management process will be based on the business needs and individual merit, competence in the role. Learn more about us at www.gsr.io.

About GSR Markets

GSR Markets, founded in 2013 by Cristian Gil and Richard Rosenblum in London, operates as a leading crypto market maker and liquidity provider for spot and derivatives. Its businesses span OTC trading, systematic market making and treasury management for exchanges, token projects and institutions, with coverage across numerous exchanges and deep stablecoin liquidity. Headquartered in London with hubs in New York, Singapore and Zug, GSR combines algorithmic pricing, around-the-clock risk and credit facilities that support launch and secondary liquidity for token issuers. Regulated in several jurisdictions and expanding in the US, GSR emphasizes inventory discipline and reliable execution during volatility. Expect a quantitative, markets-driven culture that values pricing rigor, risk control and operating as dependable liquidity rails for sophisticated trading counterparties.