Quant Developer

GSR; Greater London; On-site; GBP 120,000 - 180,000; Full time

Benefits offered by this job

Healthcare

Dental

Vision

Retirement Planning

30 days holiday

Free lunches

Job summary

GSR Markets seeks a high-caliber candidate to join a fast-paced team at the intersection of trading and technology. You will design, test, and implement strategies across market-making, prop, and OTC, contributing to low-latency Rust systems that run in production.

Success depends on strong quantitative insight, curiosity, and ownership. You will partner with traders and engineers to tackle complex, performance-critical challenges and drive continuous improvement across the platform.

Qualifications

• Strong quantitative foundations for pricing and risk.
• Genuine interest in trading systems and market microstructure.
• Experience with programming languages used in trading environments (Python, C++, Rust).
• Degree in Mathematics, Physics, Computer Science or related field.

Responsibilities

• Research, build, and refine trading strategies across market-making, prop, and OTC.
• Analyze market microstructure and pricing to identify opportunities.
• Collaborate with traders, researchers, and engineers to deploy strategies in live systems.
• Develop analytics and optimisation workflows to support research.
• Monitor live strategy performance and ensure stability of trading systems.

Skills

Quantitative foundations

Market intuition

Pricing & market structure

Learning mindset

Interest in trading systems

Education

Degree in Mathematics, Physics, CS

Tools

Python

C++

Rust

Job description

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.

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.

Role Overview:

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.

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.

What We Offer:

• 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 do not discriminate based upon any applicable legally protected characteristics such as race, religion, color, country of origin, sexual orientation, gender, gender identity, gender expression, or age. 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.