Senior Blockchain Data Scientist

We're a team of experts pushing the limits of what's possible, united by our common goal to unlock true freedom through digital ownership, making technology accessible for all. We believe in a world where users, creators and enterprises manage their value with ownership and freedom. Our curiosity drives us to innovate, empowering individuals on a global scale. We believe change is constant and our team moves forward as one, with a culture of problem-solving where every employee is empowered and supported to challenge tradition and create solutions. Our mission is simple: to make self-custody accessible and give people the keys to their own financial futures. If you want to make a true impact, we want you to join us at Ledger.

At Ledger, we're proud to be the global platform for digital assets and Web3, with over 20% of the world's crypto assets secured through our Ledger devices. With our headquarters in Paris, and offices in Vierzon, Grenoble, Montpellier, London, Portland, Geneva, Zurich and Central Singapore, we have a team of around 600 professionals developing a variety of products and services to enable individuals and companies to securely buy, store, swap, grow and manage crypto assets – including the Ledger hardware wallets line with more than 7.5 millions units already sold in 200 countries.

The team

The Data team is responsible for leveraging data to drive strategic business decisions and enhance our product offerings. As a core member, you will be responsible for end-to-end data projects—from defining metrics and building robust data pipelines to deploying analytical models. Your insights will be essential for monitoring company performance, understanding user behavior across various protocols, and contributing directly to Ledger's growth and security strategies. If you are a data professional passionate about the intersection of data science and the cutting-edge Web3 ecosystem, and you want to work in an environment that champions innovation, security, and decentralization, this role is for you.

What you'll be doing

• Design, build, and maintain robust, scalable data pipelines (ETL/ELT) using tools like dbt and Airflow

• Perform in-depth analysis of large-scale, complex blockchain data (on-chain and off-chain) to uncover key trends and optimize product features

• Partner with Product, Engineering, and Finance teams to translate business questions into analytical frameworks and deliver actionable recommendations

• Monitor company performance, track revenue, and identify user segments to support strategic direction

• Design and maintain BI dashboards using tools like Tableau

• Ensure data quality and accessibility for the entire organization

• Master a cutting-edge technical stack (Python, Snowflake, DBT, Airflow, Generative AI tools)

What we're looking for

• 2+ years of professional experience in a Data Scientist, Data Engineer, or relevant analytical role

• Exceptional proficiency in SQL for complex data extraction, manipulation, and optimization

• Significant experience with Python for statistical analysis, modeling, and building data-intensive applications

• Proven experience in building and optimizing scalable data pipelines using dbt and Airflow

• Direct experience working with public blockchain data (Ethereum, Bitcoin, Layer 2s, DeFi protocols) is a significant advantage

• Experience with machine learning, time-series analysis, or predictive modeling is a plus

• Excellent ability to communicate technical findings and methodologies to non-technical audiences

• Strong interest in cryptocurrencies, blockchain technology, and the Web3 ecosystem

At Ledger, we are dedicated to continually investing in our employees which is why we offer more than just salaries; we provide comprehensive compensation packages that include a wide range of benefits. Here are some of the benefits you can look forward to:

• Flexible work options - Our hybrid policy allows employees to work from home up to 3 times per week

• Health & Wellness support - Health and Life Insurance.

• Financial growth opportunities - Employees can become shareholders in Ledger as well as other financial benefits depending on your country of work.

• Commuter allowance - Ledger offers a commuter allowance to contribute to your preferred means of transportation.

• Learning & Development - A comprehensive suite of training solutions providing a personalised learning experience for every employee.

For regionally specific benefits, your Talent Acquisition contact will be able to provide you with more information.

We're committed to building an inclusive hiring process. If you need any adjustments or accommodations, just let us know, we'll do our best to support you.