Quant Developer
Job Description:
The Role
We are seeking a Quantitative Developer with strong engineering skills to join our London-based team. This role is ideal for a technically strong developer who combines deep experience in highly scalable trading systems with the ability to adapt and extend back testing systems for DeFi as well as operate on cloud infrastructure.
You will work closely with quant researchers and analysts to build research infrastructure, that can design, test, and deploy strategies capitalizing on decentralized markets.
Key Responsibilities
System Adaptation
- Work with existing research frameworks to integrate DeFi-specific functionality
- Extend and optimize components for on-chain analysis, risk management, and simulated connectivity to decentralized venues
- Implement enhancements in Rust and Python for performance, reliability, and security
Monitoring & Troubleshooting
- Develop metrics and dashboards to monitor strategy performance and market conditions
- Troubleshoot unexpected behaviors and refine infrastructure based on feedback
- Continuously adapt to changing protocols and smart contract mechanics to adapt to evolving DeFi ecosystems
Cross-Team Collaboration
- Work closely with the Head of Quant Strategies to align our infrastructure development with business goals
- Present findings and system metrics to team and internal stakeholders
- Contribute to thought leadership and internal knowledge sharing on programming techniques, new software innovations and AI
The Expertise and Skills You Bring
Technical Expertise
- Strong proficiency in a systems language such as C++/Rust etc.
- Advanced skills in Python, relational databases and SQL/Snowflake
- Experience working with trading platforms
Analytical & Research Skills
- Familiarity with back testing and designing statistically sound experiments
- Structured approach to hypothesis generation, model building, and validation
- Strong understanding of portfolio construction, risk modeling, and financial techniques
Professional Experience
- Typically, 9+ years of experience in quantitative development/research
- Experience working with modern cloud technologies (e.g. AWS)
- Advanced degree (MSc or PhD) in a quantitative discipline (e.g., Mathematics, Computer Science, Physics, Statistics)
- Experience working in a collaborative, cross-functional environment
- Prior experience adapting or extending trading systems
Preferred Qualifications
- 2+ years of experience with DeFi protocols, protocol mechanics, and smart contracts
- Familiarity with MEV, gas optimization, and Layer 2 scaling solutions
- Experience with trading infrastructure and execution in decentralized markets
- Demonstrated initiative in research, strategy development, and process improvement
The Team
Fidelity Digital Assets® is dedicated to building products and services that help institutions adopt digital assets and innovate within the increasingly digital world of finance. Fidelity Investments began researching blockchain technology and digital assets solutions in 2014, and years of research and development have provided us with the deep expertise necessary to build the future of finance.
Come join the Quantitative Strategies team within Fidelity Digital Assets® to help grow our business initiatives within DeFi and contribute to our research and product capabilities using your insights.
