DeFi Quant Developer

Fidelity Investments • Boston, MA

2d • $97,000 - $185,000

About The Position

As a quant developer, you will conduct deep research on protocols, primitives, and on-chain strategies using scientific modeling, machine learning, and other quantitative methods. You will design, develop, and implement core quantitative research infrastructure, applying an engineering mindset to implement research, test code, and deliver projects that help Fidelity compete in the DeFi marketplace.

The role includes researching financial data and emerging DeFi infrastructure, developing and maintaining quantitative models, and collaborating with quantitative researchers, DeFi analysts, technologists, and other stakeholders. The work contributes to Fidelity Digital Assets’ decentralized finance capabilities, technical blockchain and DeFi ecosystem expertise, and research that informs new product development.

Requirements

• Knowledge of public blockchains and DeFi protocols such as decentralized exchanges, lending platforms, or derivatives platforms, with a desire to become a subject matter expert.
• Strong Python programming skills and experience with libraries such as Pandas, NumPy, and Scikit-Learn.
• Working knowledge of machine learning principles, classification models, time series regression, and stochastic calculus.
• Understanding of relational database concepts and experience writing SQL queries.
• Working knowledge of Git.
• Strong written and verbal communication skills.
• Ability to work independently while collaborating across teams.
• 3–5 years of experience in digital assets, DeFi, fintech, crypto-native organizations, research firms, or a related field.
• BSc, MSc, or PhD degree in Mathematics, Physics, Computer Science, or another quantitative field.

Nice To Haves

• Background or experience in algorithmic trading.
• Familiarity with programming in Rust.

Responsibilities

• Research financial data and emerging DeFi infrastructure to identify exploitable patterns, trends, and yield-generating opportunities.
• Use quantitative techniques, machine learning, and data science methods to process large financial datasets.
• Collaborate with quantitative researchers and DeFi analysts to turn research findings into actionable insights.
• Design, implement, and maintain quantitative models for various use cases.
• Research, evaluate, and explore risk management and optimization algorithms.
• Develop software in Python and other programming languages to process, analyze, and predict market behaviors.
• Retrain and backtest models based on market performance and new data.
• Work with quantitative researchers, technologists, and stakeholders to integrate DeFi strategies into the broader research framework.
• Participate in meetings, code sharing, and cross-functional collaboration to align research with business objectives.

Benefits

• Comprehensive health care coverage.
• Emotional well-being support.
• Market-leading retirement benefits.
• Generous paid time off.
• Parental leave.
• Charitable giving employee match program.
• Educational assistance, including student loan repayment, tuition reimbursement, and learning resources.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level