Senior Lead Data Scientist

  • Contract Type: Full-Time
  • Location: Paris, France (75018)


BackMarket is the number one European (and soon global) marketplace specializing in the sale of fully refurbished tech devices.

Job Description

Back Market is the world’s leading refurbished electronics marketplace with a team of more than 650, powering operations in 16 countries (and counting!).

Back Market is undergoing meteoric growth and has raised $884 million, with a valuation of $5.7 billion. Our mission is simple: empowering people to buy tech sustainably by offering folks a high quality, accessible, and more eco-friendly alternative to buying new electronics. Why? Refurbished tech helps lower our collective environmental impact.

Be part of a great and growing adventure that will change the way the world consumes tech.

As part of the Bureau of Technology, your mission will be to detect, design, develop, implement and improve data-driven solutions that will play a key role in developing BackMarket’s business and vision.

You will first be joining the Recommendation team whose mission is to build an in-house recommendation engine for Back Market.

As a staff data scientist, you will play a cross-team role where you will interact with all data scientists and ML engineers.


  • Design and implement large and complex data science projects in the company (ex: in-house recommendation engine)
  • Provide insights to improve existing ML models currently in production
  • Provide DS expertise and help other data scientists to grow theirs
  • Help recruit data science profiles by participating in the recruitment strategy and processes
  • Then :

  • Evangelize data science in the company to identify and assess data science / ML opportunities
  • Animate a data science community to share good practices
  • Participate in building a vision for data science at Back Market
  • Embrace the Data science spokesperson role in the company

  • Proven track record in in-house recommendation systems
  • Pragmatic mindset. You will be in charge of implementing solutions that bring value with the right tools
  • Experience with all the different stages of several complex machine learning and data science use cases
  • Ability to deep dive into mathematical topics (data science, machine learning, statistics)
  • Ability to vulgarize a technical topic to non-technical people and to mentor other data scientists
  • Experience in building and fostering data science good practices, sharing knowledge and animating a community at scale
  • Ability to take a step back in order to identify future challenges and opportunities where data science could be leveraged
  • Great verbal and written communication skills in English 

    • A meaningful job: through hard work, you will help avoid thousands of tons of electronic waste and fight against planned obsolescence. It counts!

    • An attractive salary, equity, multiple benefits (meal tickets, health insurance, etc...), parental benefits, #remote friendly company, relocation package, internal events, etc… 

    • Technical challenges all day every day: you will have the freedom to innovate and adopt new ideas!

    • Work with passionate experts who will share their knowledge and help you develop and grow! (Backademy, technical guilds, Meet-up & Conference) 

    • Grow your career with a flexible career path, BackMarket can help you evolve!

    • A booming scale-up: our environment is rapidly growing in Europe, the USA and soon in Asia!

    • A lot of fun: you will have the opportunity to work in a fast-paced, open-minded and friendly environment.

    BackMarket is an Equal Opportunity Employer for any minority, disability, gender identity or sexual orientation.


    Additional Information

    • Contract Type: Full-Time
    • Location: Paris, France (75018)