Lead Python Developer

CW Talent Solutions; Greater London; On-site; GBP 120,000 - 160,000; Full time

Job summary

CW Talent Solutions partners with a global proprietary trading firm to hire a Lead Python Developer for their DeFi trading desk in London. You will build and scale Python-based trading infrastructure and work closely with the founding team to shape its technical foundation.

The role requires expert Python skills (async/await, scalable design), knowledge of DeFi protocols and on-chain logic, plus experience with distributed systems and microservices.

Qualifications

• Expert Python development with async/await and scalable design.
• Knowledge of DeFi protocols (AMMs, MEV, liquidations) and smart contracts.
• Experience with distributed systems and microservices architecture.
• Ability to read Solidity and understand on-chain logic.

Responsibilities

• Build and scale Python-based trading infrastructure.
• Integrate with smart contracts and DeFi protocols.
• Design microservices to enhance trading and automation.
• Take ownership of key system components from architecture to deployment.
• Optimize performance, with opportunities to use Rust for high-speed workloads.

Skills

Python

DeFi & blockchain

Distributed systems

Solidity literacy

On-chain logic

Job description

CW Talent Solutions is partnering with a global proprietary trading firm to hire a Lead Python Developer for their DeFi trading desk. This role will focus on building and scaling the firm’s Python-based trading infrastructure, working closely with the founding team.

The Firm

• Global proprietary trading firm with a growing DeFi desk
• Entrepreneurial and technology-driven culture
• Opportunity to shape the technical foundation of a rapidly scaling desk

The Role

• Build and scale Python-based trading infrastructure
• Integrate with smart contracts and DeFi protocols
• Design microservices to enhance trading and automation
• Take ownership of key system components from architecture to deployment
• Optimize performance, with opportunities to use Rust for high-speed workloads

Experience Required

• Expert in Python, including async/await and scalable system design
• Knowledge of DeFi and blockchain (AMMs, MEV, liquidations, smart contracts)
• Experience with distributed systems and microservices
• Ability to read Solidity and understand on-chain logic
• Based in or willing to relocate to London