Machine Learning Engineer (m/f/x)

<h1>Senior Machine Learning Engineer (m/w/d)</h1> <p>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: packaging, deployment, drift detection, and the call on whether a model is fit to serve.

Location: Berlin Schöneberg — you work from our office, hybrid with 3 days office and 2 days home office.

Acerca de

us

CarOnSale is the AI-powered platform for B2B used car trading in Europe

Over 40,000 buyers from more than 20 countries trade on our platform — and 85% of inventory is exclusive to us.

We connect software, pricing intelligence, logistics and financing in one layer — as the operating system for an entire industry.

</p> <p><em><strong>One Platform.

One Profit Engine.

The platform you build in

Our machine learning runs on one shared, central platform — not a separate pipeline per model

Five canonical stages: data extraction, validation, transformation, training and evaluation.

A Snowflake data warehouse feeds a SageMaker managed feature store, and models reach production through governed CI/CD promotion lanes on Terraform-managed AWS infrastructure.

Your job is to build inside it and make it stronger, so the next model costs less to ship than the last one.

Your

Responsabilidades

• 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, while they ...