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Software Engineer (Prop Trading Firm) - Radley James

Software Engineer (Prop Trading Firm) - Radley James

Hybrid

London, United kingdom

Junior

Full Time

26-01-2026

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Skills

Python Rust

Job Specifications

Top global trading firm looking for a DeFi developer to join a small, highly technical trading team building high-performance systems that operate directly on decentralized markets.

The role is hands-on and focused on building production systems in Rust and Python, covering execution, on-chain integrations, and performance-critical components where latency and reliability are key. There is strong end-to-end ownership and clear visibility across the full trading stack.

They are looking for someone with a solid software engineering background and several years of experience (typically around 3–7). Experience with trading systems or DeFi is beneficial but not required.

What they’re looking for:

Strong production experience with Rust and Python
Hands-on experience with smart contracts and Solidity at an application level
3–4+ years in crypto or DeFi-native roles
Deep understanding of decentralized exchanges and the current DeFi landscape
Experience building and maintaining public APIs
Understanding of trading concepts, either practical or theoretical
Ability to run and maintain systems on cloud infrastructure
Based in London or working remotely from anywhere in Europe

Nice to have:

Experience designing, writing, and deploying smart contracts
On-chain trading or strategy development experience
Familiarity with ecosystems such as Solana, Sui, or Cosmos
Experience diagnosing performance, latency, or throughput issues
Interest in product design and user experience alongside engineering

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