Senior Data Scientist, Growth Alliance (m/f/d)Active

The opportunity

Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food…

What you'll do

  • Build and iterate on machine learning models powering personalization that: run in production behind high-traffic, performance-critical conversion pages.

  • Execute decisioning models that determine the best next step in the conversion funnel for each user.

  • Contribute to system design by coordinating with Engineering to ensure data: science solutions integrate cleanly into the overall funnel architecture.

  • Coordinate directly with Product and Engineering to shape how ML-driven: decisions are embedded into the conversion funnels, including where models decide and how failures are handled.

  • Direct experimentation design for decisioning models, defining success: metrics, guardrails, and how results are interpreted in high-noise, high-traffic environments.

  • Maintain model safety and effectiveness in production by monitoring: performance, input data reliability, and latency, and iterating when issues are detected.

What they're looking for

  • + years of professional experience in data science or a related quantitative field.
  • Strong foundation in machine learning concepts relevant to personalization and marketing communications.
  • Hands-on experience with techniques such as regression, classification,: clustering, recommendation systems, and experimentation.
  • Practical experience designing and analyzing A/B tests and controlled experiments.