DeFi Developer — High-Performance Crypto Trading Systems (London)
Our client is hiring a sharp, ambitious DeFi Developer to join their DeFi trading team building high-performance systems that operate directly on decentralized markets.
You'll work hands-on across the full trading stack — from on-chain integrations and execution logic, to infrastructure, monitoring, and performance optimization.
What you'll do
* Build and ship production-grade code (primarily Rust + Python)
* Develop systems that interact with on-chain protocols and infrastructure
* (Solidity, JSON-RPC, Solana, MEV workflows, etc.)
* Improve real-time monitoring, execution pipelines, and strategy tooling
* Debug and optimize end-to-end performance: latency, reliability, throughput
* Work with protocol teams and external projects to unlock new market opportunities
* Grow into end-to-end ownership across DeFi integrations and trading infrastructure
Why this role is unique
* Full systems exposure — infrastructure, execution, strategy logic, on-chain interaction
* DeFi at the core — learn how protocols work under the hood and how on-chain dynamics create edge
* Elite teammates — small, world-class group of engineers, quants, and traders
* Startup velocity — fast decisions, frequent shipping, immediate production impact
This is an ideal role for someone who sees themselves as a top technologist and wants to work in one of the most cutting-edge environments in finance and crypto.
What we're looking for
We're looking for driven developers who want to learn fast by working on hard, meaningful problems.
You should have:
* 3–7 years of professional software engineering experience
* Strong fundamentals and ability to write clean, testable, efficient code
* Solid CS foundation: algorithms, data structures, concurrency, networking, etc.
* Strong ownership mindset and clear communication
Signals of technical excellence (any of these helps):
* Top academic performance in CS / math / physics / engineering
* Competitive programming / olympiad success (ICPC, IMO, IOI, IPhO, etc.)
* Experience at a highly selective tech company, trading firm, or fund
Language & technical background
* Rust preferred, but you should be strong in at least one systems/statically typed language:
* C++ / Java / Go / C# / Kotlin / similar
Nice to have
Strong preference
* Understanding of trading systems, market structure, or strategy implementation
Bonus
* DeFi familiarity: smart contracts, blockchain APIs, MEV, Solana
* Rust experience
* Infrastructure/observability tools (AWS, Grafana, etc.)
* Strong math/stats background (modeling, simulation)
Team culture
Our client values:
* High ownership and initiative
* Curiosity, intellectual honesty, and rapid learning
* Clear, direct communication
* No ego, no politics — just building and improving together