Senior ml data engineer

I am collaborating with a very exciting, incredibly well backed, start up, Biotech company with offices in Amsterdam and Zurich, they have built a Clinical AI assistant for Oncology and are working with a huge amount of healthcare data.

I am looking for an experienced ML Data Engineer to design, build, and scale our data-sourcing, synthetic-generation, and curation pipelines. High-quality datasets are the foundation of frontier-scale language models, and you will play a critical role in creating them.

In this role, you will develop high-throughput pipelines that:

• Ingest and process multi-modal data at petabyte scale.
• Generate large volumes of synthetic training data.
• Filter, score, and classify content by topic, quality, and policy alignment.

You will work closely with ML researchers to directly influence the development of our next-generation foundation models.

About You

• Advanced programming expertise in Python and deep experience with distributed computing frameworks (Ray, Spark).
• Proven ability to design, operate, and scale large-scale data pipelines and run data-quality experiments.
• Experience with synthetic-data generation for LLM training pipelines.
• Strong knowledge of lakehouse architectures (Delta, Iceberg) and columnar formats (Parquet, ORC).
• Familiarity with core data-processing primitives (hashing, deduplication, chunking, etc.) and their scalability/performance trade-offs.
• Excellent communication skills, with the ability to clearly present results and technical concepts.

Nice to Have

• Hands-on production experience orchestrating complex DAGs with Dagster (preferred) or similar workflow engines.
• Expertise in data-quality frameworks, validation, and observability/monitoring tooling.
• Strong understanding of ML fundamentals (architectures, training paradigms, evaluation metrics) to collaborate effectively with researchers and guide data-driven decisions.

Benefits

• Comprehensive salary
• Long term incentives
• 25+ days holiday
• Clear development pathway

Following your application Joe Templeman, a specialist AI Recruiter will discuss the opportunity with you in detail.

He will be more than happy to answer any questions relating to the industry and the potential for your career growth. The conversation can also progress further to discussing other opportunities, which are also available right now or will be imminently becoming available.

This position has been highly popular, and it is likely that it will close prematurely. We recommend applying as soon as possible to avoid disappointment.

Please click ‘apply’ or contact Joe Templeman for any further information

Joe Templeman

Recruitment Manager – Barrington James

Email: jtempleman (at) barringtonjames.com