ML Engineer, Recommendations

About us:

We run a marketplace with over 300,000 active sellers and fulfillment centres in four regions. Vieira Marketplace operates consumer websites and apps used by tens of millions of people each month. Product reviews happen on Thursdays, with demos of whatever shipped that week.

Position summary:

Vieira Marketplace is hiring for the ML Engineer, Recommendations role to take models from notebook to production and keep them working once they're there. On site, São Paulo.

Key responsibilities:

• Fine-tune open-weight models with LoRA when it beats prompting
• Maintain feature pipelines and a feature store such as Feast or Tecton
• Productionize data science prototypes without rewriting everything
• Deploy models behind low-latency APIs with FastAPI, Triton, TorchServe or vLLM
• Cut inference cost with quantization, batching and caching
• Set up evaluation harnesses and regression tests for model quality
• Write clean, tested Python and review teammates' code

Required qualifications:

• 3+ years of software engineering experience, with at least two spent on ML systems in production
• Strong Python and solid engineering habits (testing, packaging, code review)
• Familiarity with Docker, Kubernetes and a cloud ML platform (SageMaker, Vertex AI, Azure ML)

Bonus points:

• Computer vision background (OpenCV, detection, segmentation)
• CUDA or Triton kernel experience
• Distributed training with DeepSpeed or FSDP

Benefits:

Rate: R$16,000-R$19,500 per month

• Private health insurance
• Meal vouchers
• Savings fund
• Life insurance
• Gym membership
• 13th-month bonus

Please submit your CV in English.

Start: Within 30 days.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Vieira Marketplace.