Senior ML Product Engineer — AI-Driven Growth

HelloFresh

Warszawa

On-site

PLN 300,000 - 550,000

Full time

14 days+
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Benefits offered by this job

Global collaboration
Real-world impact technology
Leadership opportunities
End-to-end development
Warsaw workspace

Job summary

HelloFresh Warsaw hosts a Senior Machine Learning Product Engineer within HelloTech to shape the intelligence behind customer communications. You’ll focus on decisioning, intelligent funnels, and AI-assisted content and search to improve engagement and personalization at scale.

You will work with Python, Spark, and a modern tech stack across production ML systems, collaborating with data scientists and cross-functional teams to ship robust ML solutions that impact millions of customers monthly.

Qualifications

  • Hands-on experience with AI tooling beyond casual experimentation.
  • Deep data/ML engineering expertise with production systems.
  • 5+ years building and operating production ML systems.
  • Fluency across the data and ML stack (Python, Spark, Databricks) and back-end familiarity (Go, Kafka, Kubernetes).
  • Statistical literacy to design honest experiments and interpret results.
  • Operational judgment to diagnose system issues under load and deploy fixes.
  • You take full ownership and ship with a bias to learn.

Responsibilities

  • Own & elevate ML infrastructure: maintain core repos, tooling, and workflows for scalable ML deployments.
  • Build and operate data products and ML systems from experimentation to production.
  • Architect the Send Decisioning data layer and integrate feature stores for quality data.
  • Engineer AI-assisted content & asset systems to streamline marketing assets.
  • Build production-grade pipelines and serving layers with observability and reliability.
  • Bridge research and production by transitioning models with low latency.
  • Set ML engineering standards: repositories, CI/CD templates, and platform practices.

Skills

AI tooling
ML engineering
Production systems
Product sense
Ownership
Statistical literacy
Operational judgment

Tools

Python
Spark
Databricks
Go
Kafka
Kubernetes

Job description

HelloFresh Warsaw hosts a Senior Machine Learning Product Engineer within HelloTech to shape the intelligence behind customer communications. You’ll focus on decisioning, intelligent funnels, and AI-assisted content and search to improve engagement and personalization at scale.

You will work with Python, Spark, and a modern tech stack across production ML systems, collaborating with data scientists and cross-functional teams to ship robust ML solutions that impact millions of customers monthly.

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