Senior Staff Machine Learning Engineer, Menu Personalisation (m,f,x)
HelloFreshResponsibilities
- Set the technical direction and own the end-to-end ML stack for menu personalization, including feature pipelines, training workflows, model serving, experimentation tooling, and infrastructure.
- Take research and experiments into reliable production services that meet latency, scalability, and observability requirements.
- Shape the personalization roadmap with Product and Engineering leadership using data and user evidence.
- Operate, instrument, and continuously improve production systems.
- Raise the team’s technical bar through architecture reviews, mentorship, and hands-on production ML practices.
- Make long-term platform and architecture decisions and drive engineering standards adopted by other ML and data teams.
- Collaborate across HelloFresh on best practices and company-wide engineering initiatives.
Requirements
- 8+ years building and operating production machine learning systems, with a track record of technical leadership at scale.
- Experience making architectural decisions that remained effective over multiple years and influenced teams beyond the immediate team.
- Production experience with recommender systems or large-scale personalization is strongly preferred.
- Fluency with Python, Spark, Go, Kafka, and Kubernetes, plus hands-on experience with pipelines, model serving, and observability at scale.
- Statistical literacy for designing honest experiments and evaluating model improvements accurately.
- Operational judgment to diagnose system behavior, identify root causes, and build systems that can be debugged under real load.
- Hands-on experience using Claude Code, Cursor, and Copilot beyond casual experimentation, including daily use of AI agents.
- Strong product sense, evidence-based decision-making, and the ability to translate technical work into business value.
- Bias toward shipping, full ownership, and ability to complete work through the final stages.
Benefits
- Flexible Hybrid work with remote flexibility and a minimum of 2 days in the office per week, typically 2–3 days.
- Virtual Stock Option and Restricted Stock Unit plans.
- HelloFresh meal-kit discount.
- Opportunity to shape personalization for millions of customers and influence company-wide ML and data engineering standards.
Categories
About HelloFresh
HelloFresh is on a mission to change the way people eat, forever! From our 2011 founding in Europe’s vibrant tech hub Berlin, we’re evolving from the world’s leading meal kit company to the world's leading food solutions group. We delivered 243.3 million meals and reached 7.5 million active customers around the world in Q3 2022. HelloFresh Group consists of six brands that provide customers with high quality food and recipes for different meal occasions. Every ingredient needed for our meals are carefully planned, responsibly sourced and delivered to your door when it’s most convenient for you. Only HelloFresh gives you the tools to achieve something delicious every day. Making a meal a delicious achievement - not just fuel for your day - takes a lot of work and smart people. From Designers and Copywriters to Data Scientists and DevOps Engineers, to potato farmers, pasta makers and the people who ensure every box is perfectly packed for every customer, we’re collectively disrupting the food supply chain and the multi-trillion-dollar food tech industry. Our more than 21,000 high-performing and ambitious employees across the globe from New York to Berlin, London to Sydney and Toronto to Milan enjoy a number of benefits including flexible working arrangements, discounts on our boxes, health and well-being and learning and development programs. We’re always looking for quality ingredients to perfect our recipe, so join us now! https://www.hellofresh.com/careers/locations