Senior Low Latency Engineer

Greenhouse Software, Inc.; Greater London; On-site; GBP 140,000 - 200,000; Full time

Benefits offered by this job

Healthcare

Dental

Vision

Retirement plan

30 days holiday

Free lunches

Job summary

Greenhouse Software, Inc. is seeking a senior engineer to design and build the low-latency trading infrastructure that connects trading systems to crypto markets.

You will work in Rust on production-critical systems with a multiregional team, focusing on market data distribution, order placement, and analytics data APIs. The role requires 7+ years in fintech with front-office experience, strong CS background, and proficiency in Rust or C++.

Qualifications

• 7+ years in fintech with front-office experience.
• Strong CS, engineering or mathematics 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.
• Ownership mindset with a drive for continuous improvement.
• Nice to have: familiarity with streaming and messaging systems, Aeron preferred.

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 on production-critical systems.

Skills

Front office experience

Low-latency design

Distributed systems

Proactive ownership

Communication

Education

Computer Science or related field

Tools

Rust

C++

Aeron

Job description

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 days of holiday, and free lunches when in the office.
• Regular Town Halls, team lunches, offsites, and social events.
• A strong Corporate and Social Responsibility program, including charity matching and volunteer days.
• Immigration and relocation support where required.

Equal Opportunity Statement

GSR is proudly an Equal Employment Opportunity employer. We do not discriminate based upon any applicable legally protected characteristics such as race, religion, colour, 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