Quant Developer (Digital Assets)
at Fidelity Investments
Posted 6 days ago
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- Compensation
- Not specified GBP
- City
- Not specified
- Country
- United Kingdom
Currency: £ (GBP)
DeFi Quantitative Developer with strong engineering skills to join Fidelity Digital Assets in London. This role combines on-chain analytics with backtesting system development to ideate and deploy scalable DeFi strategies. You will collaborate with quant researchers to build research infrastructure, analyze on-chain data, and test strategies across DeFi protocols. The position typically requires 5+ years in quantitative development/research (with 2+ years in digital assets/DeFi) and proficiency in Rust and Python, plus experience with blockchain data and trading platforms.
Job Description:
The Role
We are seeking a DeFi 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 DeFi markets and on-chain analytics with the ability to adapt and extend backtesting systems for DeFi as well as ideate on scalable strategies.
You will work closely with quant researchers and analysts to build research infrastructure, design, test, and deploy strategies that capitalize on opportunities across decentralized markets.
Key Responsibilities
Strategy Research & Implementation
- Research and develop yield-generating strategies across DeFi protocols (staking, LPs, lending, re-staking, etc.)
- Extract, clean, and analyze on-chain data to identify inefficiencies, arbitrage opportunities, and risk-adjusted return profiles
- Design and execute robust backtests to validate strategy performance
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 strategies based on real-time feedback
- Continuously iterate on models and assumptions to adapt to evolving DeFi ecosystems
Cross-Team Collaboration
- Work closely with the Head of Quant Strategies to align strategy development with business goals
- Present research findings and performance metrics to team and internal stakeholders
- Contribute to thought leadership and internal knowledge sharing on DeFi trends and innovations
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 blockchain data (e.g., The Graph, Dune, custom node queries) and trading platforms
- Strong understanding of portfolio construction, risk modeling, and statistical analysis
DeFi & Market Knowledge
- Deep experience with DeFi protocols, protocol mechanics, and smart contracts
- Understanding of liquidity provisioning, staking, lending, and governance mechanisms
- Experience with systematic trading or investment strategies in digital assets
Analytical & Research Skills
- Ability to design statistically sound experiments and backtests
- Skilled at extracting signal from noisy, imperfect datasets
- Structured approach to hypothesis generation, model building, and validation
Professional Experience
- Typically, 5+ years of experience in quantitative development/research
- Prefer 2+ years of experience in digital assets and/or DeFi
- Advanced degree (MSc or PhD) in a quantitative discipline (e.g., Mathematics, Computer Science, Physics, Statistics)
- Experience working in a collaborative, cross-functional environment
Preferred Qualifications
- Prior experience adapting or extending trading systems
- 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.
Certifications:
Category:
Information TechnologyCompany overview
At Fidelity, we are passionate about making our financial expertise broadly accessible and effective in helping people live the lives they want! We are a privately held company that places a high degree of value in creating and nurturing a work environment that attracts the best talent and reflects our commitment to our associates. We are proud of our diverse and inclusive workplace where we respect and value our associates for their unique perspectives and experiences. For information about working at Fidelity, visit FidelityCareers.com. Fidelity Investments is an equal opportunity employer. Fidelity will reasonably accommodate applicants with disabilities who need adjustments to complete the application or interview process.
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About Fidelity
Join us
At Fidelity, you’ll find endless opportunities to build a meaningful career that positively impacts peoples’ lives, including yours. You can take advantage of flexible benefits that support you through every stage of your career, empowering you to thrive at work and at home. Honored with a Glassdoor Employees’ Choice Award, we have been recognized by our employees as a Best Place to Work in 2026. And you don’t need a finance background to succeed at Fidelity—we offer a range of opportunities for learning so you can build the career you’ve always imagined.
Fidelity's working model blends the best of working offsite with maximizing time together in person to meet associate and business needs. Currently, most hybrid roles require associates to work onsite all business days of one assigned week per four-week period (beginning in September 2024, the requirement will be two full assigned weeks).
We invite you to Find Your Fidelity at fidelitycareers.com.
Fidelity Investments is an equal opportunity employer. We believe that the most effective way to attract, develop and retain a diverse workforce is to build an enduring culture of inclusion and belonging.
Fidelity will reasonably accommodate applicants with disabilities who need adjustments to participate in the application or interview process. To initiate a request for an accommodation, contact the HR Accommodation Team by sending an email to accommodations@fmr.com, or by calling 800-835-5099, prompt 2, option 3.
At Fidelity, we value honesty, integrity, and the safety of our associates and customers within a heavily regulated industry. Certain roles may require candidates to go through a preliminary credit check during the screening process. Candidates who are presented with a Fidelity offer will need to go through a background investigation and may be asked to provide additional documentation as requested. This investigation includes but is not limited to a criminal, civil litigations and regulatory review, employment, education, and credit review (role dependent). These investigations will account for 7 years or more of history, depending on the role. Where permitted by federal or state law, Fidelity will also conduct a pre-employment drug screen, which will review for the following substances: Amphetamines, THC (marijuana), cocaine, opiates, phencyclidine.
Benefits that adapt to everything life sends your way
401(k) with company match
Medical, dental, vision and prescription drug coverage
16-week maternity leave & 12-week parental leave
Student loan assistance
Fidelity is invested in you
Committed to Professional Development
At Fidelity, we are constantly adapting to the changing needs of our customers, new technologies, and better ways of working. And we empower our employees to do the same, with an emphasis on developing skills and connections that will help propel you forward in your career while being able to make an impact for Fidelity’s customers around the world.
We offer a wide range of options for professional development including online, in-person, and mentor driven solutions. Special interest and networking groups are also part of our culture of empowerment, personal and professional enrichment, diversity and inclusion, and knowledge sharing.
Continuing Education & Training
- Assess, build, and align your development plan through resources like our skill-building classroom and online courses.
- Video-based training for technology, leadership, management & more.
- Ongoing skills development and coaching opportunities.
- Paid training with a facilitator who is dedicated to your onboarding and will track and evaluate your progress, giving you strategies to improve.
- A range of talent development programs to support career mobility.
Mentoring
- Utilize the skills of experienced leaders to enrich your career.
- Dedicated mentors to help you grow into new areas of Fidelity’s business as you develop new skills.
- An open atmosphere of knowledge sharing and collaboration.
- Opportunities to pay it forward, sharing the knowledge you develop and as you help others define how they want their career to take shape.
Our Commitment
Discover opportunities to build a fulfilling career within a supportive culture that celebrates individuality. We empower our associates to pursue career paths that align with their unique goals and personalities.
Giving back to our communities
Throughout Fidelity, you’ll find a genuine commitment to social responsibility – where we strive to make an impact for customers, while also making an impact on the world.
Fidelity Cares
- Provides associates with opportunities to actively volunteer and share their talents.
- Hosts numerous company-wide volunteer events (in-person and virtual).
- Partners with nonprofit organizations to support our local communities.
- More than 12,500 associates donate time annually – from interns to SVPs.
- Impact includes refurbishing schools, donating books and supplies, and teaching financial literacy.
Fidelity Charitable®
- Created to make it easy for people to support charitable organizations they care about.
- Helped deliver $14.9billion in donor-recommended grants to charity in 2024.
- Supported more than 433,000 unique charities around the world.
- Since its inception, more than $100 billion has been given to public charities.
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