Senior C++ Software Engineer
About This Role
This is an opportunity to engineer the backbone of modern multi-asset trading, where traditional finance and crypto markets converge. You'll work alongside a tight-knit, deeply technical team building ultra-low-latency systems that bridge centralized trading infrastructure with the fast-evolving world of decentralized finance and digital assets. If you thrive on solving hard distributed-systems problems where milliseconds translate into millions, this role offers outsized technical challenge and impact.
What You'll Be Doing
Architect and optimize high-performance C++ systems for trading across FX, Equities, and crypto markets
Design low-latency messaging and execution pathways that connect to liquidity providers and emerging blockchain-based venues
Collaborate with quants and infrastructure engineers to push system throughput and reliability to their technical limits
Build and maintain resilient, fault-tolerant distributed systems capable of handling massive transaction volumes
Contribute to the evolution of our crypto trading capabilities as digital asset markets and DeFi infrastructure mature
Participate in code reviews, system design discussions, and performance tuning sessions with a senior engineering team
What We're Looking For
5+ years of professional C++ development experience, ideally in latency-sensitive environments
Deep understanding of multithreading, memory management, and network programming
Experience working with high-throughput, low-latency trading or financial systems
Strong grasp of distributed systems design and performance optimization
Excellent communication skills and comfort working in a small, senior, highly collaborative team
Genuine curiosity about blockchain, crypto markets, and the future of decentralized trading infrastructure
Bonus Points
Exposure to cryptocurrency exchanges, digital asset custody, or smart contract-based settlement systems
Familiarity with DeFi protocols, blockchain consensus mechanisms, or distributed ledger architecture
Experience with FPGA, kernel bypass networking, or other extreme-performance techniques
Background in quantitative finance or market microstructure
Why Join Us
Competitive compensation with meaningful equity upside
Fully remote, flexible working culture built around deep focus and autonomy
Direct influence over systems shaping the future of crypto and traditional market convergence
Work alongside elite engineers solving some of the hardest problems in distributed trading technology
Ready to Apply?
To submit your application for this position, please visit Reactive Markets's official website and follow their application process.