Machine Learning Engineer
CarOnSale
Seniority
Junior
Model
Hybrid
Sector
Salary
Undisclosed
Contract
Full-Time
You own models from handoff through to production: packaging, deployment, monitoring, and the decision on whether a model is ready to serve. Four models in production today. Fifteen to twenty by mid-2027. The shared pipeline that gets them there has to hold — and you own everything after handoff.
What you'll do
- You own models from handoff through to production: packaging, deployment, monitoring, and the decision on whether a model is ready to serve
- You keep production models reliable — drift detection, performance monitoring, alerting and incident response when something moves
- You own the serving and inference path: fitted pipeline artifacts, inference entry points, monitoring hooks and feature-store parity
- You review model design and evaluation methodology before anything ships, and catch data leakage, backward-window errors and weak evaluation during development
- You extend the shared platform so it stays useful for every model, without project-specific logic leaking into shared code
- You set the engineering standards the platform runs on as it scales across the organisation
What you'll need
- 2+ years in production machine learning engineering, with real ownership of models after handoff
- Strong Python: typed, tested, production-grade code, and you review the work of others
- Enough machine learning depth to challenge a pipeline on problem framing, feature engineering, model selection and evaluation methodology
- Hands-on experience with a managed ML platform — SageMaker, Vertex AI, Databricks or Azure ML — plus feature stores, CI/CD for machine learning, AWS and Terraform
- An AI-native way of working: you use tools like Claude, ChatGPT or Copilot actively in your daily work
- English at C1 level, written and spoken
Nice to have
- Snowflake and dbt
- Experience mentoring colleagues or reviewing their work
- Comfort operating where the answer is not defined yet
What they offer
- Hybrid working: 3 days in office, 2 days remote, plus 25 "Work from Anywhere" days per year
- 28 days annual leave
- Company pension with 20% employer contribution
- Fully paid Deutschlandticket and fitness subsidy
- Virtual stock options
- Structured onboarding with buddy programme

