Senior Data Scientist - Pricing & Quality
@ Back Market

Hybrid
€150,000
Hybrid
Posted 25 days ago

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XXXXXXXXX XXXXXXXXX XXXXXXXXXX****** @backmarket.com
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Job Details

About Back Market

Hi, we’re Back Market. We’re here to help make tech reliable, affordable, and better than new. As a global marketplace for refurbished devices, we reduce environmental impact by offering trustworthy, affordable tech with significantly lower carbon emissions.

About the Role

As a Senior Data Scientist - Pricing & Quality, you will design, build, and scale AI-driven solutions to improve our marketplace. You will join the Price & Quality team composed of data scientists and backend engineers, focusing on optimizing product pricing and quality on our platform.

What You’ll Do

  • Collaborate with data scientists and software engineers to build new features using machine learning, LLMs, and statistical techniques.
  • Lead projects from problem definition through metrics development, data extraction, and model implementation.
  • Develop, deploy, and maintain scalable machine learning models and pipelines for batch and real-time applications.
  • Design and analyze experiments to evaluate new features or model changes.
  • Conduct deep statistical analyses to uncover actionable insights and support strategic decisions.
  • Communicate complex concepts clearly to engineering, product, and business stakeholders.

About You

  • Minimum 3 years of industry experience as a data scientist with a Master’s or PhD in a quantitative field.
  • Proven impact in production-level data science projects.
  • Strong understanding of machine learning, statistical concepts, experimentation design, and analysis.
  • Proficient in Python and SQL, and familiar with software engineering principles.
  • Outstanding communication skills to explain technical ideas to diverse audiences.

Bonus Points

  • Experience with advanced experimentation, causal inference, or price optimization.
  • Familiarity with Tableau is a plus.

Recruitment Process

  • Initial call with Senior Tech TA (1h)
  • Data Science Challenge
  • Technical Interview (1h15)
  • Team Fit (1h)
  • Back Market Values Fit Interview (45 min)

Key skills/competency

  • Data Science
  • Machine Learning
  • Pricing
  • Quality
  • Experimentation
  • Python
  • SQL
  • Statistical Analysis
  • Deployment
  • Communication
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How to Get Hired at Back Market

🎯 Tips for Getting Hired

  • Research Back Market's culture: Review mission, values, and recent news.
  • Customize your resume: Highlight AI and data science projects.
  • Demonstrate research skills: Be clear on pricing optimizations.
  • Prepare for interviews: Review statistics, Python, SQL, and ML concepts.

📝 Interview Preparation Advice

Technical Preparation

Review Python libraries for ML.
Practice SQL queries and data extraction.
Study real-time model deployment techniques.
Revise statistical experiments and analyses.

Behavioral Questions

Describe a challenging project and your role.
Explain how you handle tight deadlines.
Discuss teamwork experiences in complex projects.
Share an instance of clear cross-team communication.

Frequently Asked Questions