Machine Learning Engineer

We are bootstrapped and profitable, with a Shopify store and a small warehouse unit in Breda. Our audience is small but loyal: about 40,000 newsletter subscribers who actually open it. Product reviews happen on Thursdays, with demos of whatever shipped that week.

Overview:

Heatherbench Labs is looking for a Machine Learning Engineer to join a small, steady team. We're looking for an engineer to build retrieval-augmented generation features on hosted and open-weight language models, with proper evaluation. The operations team trains and serves models that run on every customer request. We need someone who cares about latency as much as accuracy. Remote within the Netherlands. The team meets in Breda once a quarter, travel covered. You get a company laptop and a headset before you start.

Day to day:

• Document model cards, data sources and known failure modes
• Maintain feature pipelines and a feature store such as Feast or Tecton
• Develop RAG pipelines with embeddings, vector stores (pgvector, Pinecone, Weaviate) and rerankers
• Write clean, tested Python and review teammates' code
• Cut inference cost with quantization, batching and caching
• Track experiments, artifacts and versions in MLflow or Weights & Biases

Minimum qualifications:

• BS or MS in computer science, engineering or a related field
• Experience deploying models as services and monitoring them
• Comfortable with SQL and large-scale data processing in Spark or Ray
• Strong Python and solid engineering habits (testing, packaging, code review)
• Hands-on experience with PyTorch, TensorFlow or JAX

Preferred:

• Published papers or open source ML contributions
• Computer vision background (OpenCV, detection, segmentation)
• Guardrails, red teaming or safety evaluation for LLM features

Benefits:

• Home office allowance
• 25 annual leave days
• 8% holiday allowance
• Stock options
• Pension scheme
• Bike plan

Please submit your CV in English.

Start: Immediately.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Heatherbench Labs B.V..