Senior Staff Machine Learning Engineer, Menu Personalisation (m/f/x)

Stack

Responsibilities

• ▹Set the technical direction for the ML systems behind menu personalization, owning the end-to-end stack: feature pipelines, training workflows, model serving, experimentation tooling, and infrastructure.
• ▹Take research and experiments to reliable production systems that meet real latency, scalability, and observability requirements, partnering with Data Scientists.
• ▹Shape the personalization roadmap together with Product and Engineering leadership, backing your point of view with data and user evidence.
• ▹Operate what you build, instrumenting and improving systems in production as part of the learning cycle.
• ▹Raise the technical bar through architecture reviews, mentorship, and setting an example of production ML craft.
• ▹Shape long-term architecture and make platform decisions whose payoff plays out over years.
• ▹Drive engineering excellence beyond Menu Personalization by setting standards other ML and data teams adopt.
• ▹Sync with peers across HelloFresh and contribute to company-wide engineering initiatives that advance ML and data craft.

Requirements

• ▹8+ years building and operating production ML systems with a track record of technical leadership at scale.
• ▹Past architectural decisions that held up over multiple years and influenced teams beyond your own.
• ▹Fluency across the data/ML stack (Python, Spark) and the backend/platform stack (Go, Kafka, Kubernetes), with hands-on experience across pipelines, model serving, and observability at scale.
• ▹Statistical literacy to design honest experiments and judgment to tell a genuinely better model from misleading metrics.
• ▹Operational judgment to diagnose system misbehavior, find root causes, and ship debuggable systems under real load.
• ▹Hands-on experience with AI tooling (Claude Code, Cursor, Copilot) beyond casual experimentation, using AI agents daily.
• ▹Product sense: opinionated about what to build and why, backed with evidence and translated into business value.
• ▹A bias to ship, taking full ownership and finishing the last twenty percent.

Nice to have

• ▹Production experience with recommender systems or large-scale personalization.

Soft skills

What we offer

• ▹Compensation heavily weighted toward equity through Virtual Stock Option (VSO) and Restricted Stock Unit (RSU) plans.
• ▹Discount on HelloFresh meal kits delivered to your door.
• ▹Flexible Hybrid working model (minimum 2 days in office per week, most teams 2-3 days).
• ▹High-performance environment with ambitious, intellectually curious global peers.
• ▹Opportunity to shape strategy, scale teams, and redefine leadership in a rapidly evolving business.

About the company

HelloFresh is a global food solutions group and the world's leading meal kit company, active in 18 countries across 3 continents. Its brand family includes HelloFresh, Green Chef, EveryPlate, Chefs Plate, Factor_, YouFoodz, The Pets Table, and GoodChop. The Menu Personalization team owns the recommender systems that match customers to recipes across global markets.