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Senior Machine Learning Product Engineer, Communications, Growth Alliance

Warszawa, Masovian Voivodeship, Poland💼 Full-time🗓 2026-08-21 → 2026-09-26

Core

Build and operate production ML systems for personalized customer communications, including send decisioning, intelligent funnels, and AI-assisted content generation.

Role type

Senior Machine Learning Product Engineer (Communications)

Builds

Production ML systems for email/SMS/push notification decisioning, automated content generation, and asset retrieval.

Domain

Direct-to-consumer food subscription (HelloFresh)

Deliverable

production ML models | product features

Required skills

Python, Spark, Databricks, Go, Kafka, Kubernetes, ML model serving, observability, statistical literacy, AI tooling (Claude Code, Cursor, Copilot)

Preferred skills

Experience with feature stores, CI/CD templates, MLflow, low-latency system design

Technologies

Python, Spark, Databricks, Go, Kafka, Kubernetes, MLflow, Databricks

Responsibilities

Build and maintain core ML repositories and engineering workflows; Architect the Send Decisioning data layer and integrate feature stores; Engineer AI-assisted content and asset retrieval systems; Bridge research and production by deploying experimental models to resilient services; Monitor and improve production systems for data quality, drift, and latency.

Seniority

Senior, hands-on IC

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