caronsale · Brazil
Skills: Python, AWS, CI/CD
You don't want another contract that ends at the notebook. You want the pager, the promotion lane and the authority to say a model isn't ready. This one is based in Brazil, 40 hours a week on your own invoice, and everything after handoff is yours. Location: Remote from Brazil — you must be based in Brazil. 40 hours per week, Monday to Friday, with daily overlap into the Berlin working day. About 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. 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. Four models serve production today. Fifteen to twenty by mid-2027. Your job is to build inside that platform and make it stronger, so the next model costs less to ship than the last one. Your responsibilities 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 …truncated… ears in production machine learning engineering, with real ownership of models after handoff — not only training them 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 experie…
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