Senior Low Latency Engineer
GSR · London · United Kingdom · On-site
Posted Sep 28, 2026
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About Us
GSR is crypto's capital markets partner, helping founders and institutions scale with confidence. With over a decade of specialized expertise, we deliver institutional-grade market making, OTC trading, and strategic venture capital to support growth at every stage.
Our value goes beyond execution. We provide access to liquidity, real-time market intelligence, and strategic guidance shaped by years operating at the center of global crypto markets. We bridge the gap between traditional finance and digital assets, connecting teams with the capital, market access, and insights they need to build what's next.
About the Role
Every microsecond in this role carries weight. You'll be building the low latency infrastructure that connects GSR's trading systems to crypto spot and derivatives markets, and the code you ship has a direct line to trading P&L.
You'll design and build core components of our trading platform in Rust, working across market data distribution, order placement, and trade and balance management. This is hands-on development on production-critical systems, sitting within a multiregional team of five, working closely with Trading, Quant and Engineering to get solutions into production fast.
You'll also shape how we organise and expose our data: cataloguing, tracing provenance, and building the APIs and services that let users query analytics data themselves rather than wait on you.
Responsibilities
Design and build core components of GSR's low latency trading platform in Rust
Maintain data quality, cataloguing, and provenance tracing across the platform
Build APIs and services that deliver analytics data to users in a self-service form
Build and maintain trading platform functionality across market connectivity, order placement, and trade and balance management
Improve existing market connectivity and trading infrastructure
Partner with quants, traders, operations and engineering to prioritise and deliver solutions that drive business outcomes
Contribute hands-on development within a multiregional team of five on production-critical systems
Your Profile
7+ years in fintech (tradfi and/or crypto), with experience in a front office environment
Strong compsci, engineering, mathematics or related background, or equivalent experience
Experience coding in Rust (preferred) or C++
Experience building low latency, distributed systems and networking components
Solid understanding of market data feeds, reference data, and trading workflows
Strong relationship and communication skills, able to bridge front office requirements with engineering execution
Ownership mindset, with precision and a drive for continuous improvement
Nice to have: familiarity with streaming and messaging systems, Aeron preferred
What We Offer
A collaborative and transparent company culture founded on Integrity, Innovation, and Performance.
Benefits include healthcare, dental, vision, retirement planning, 30…