Applied Machine Learning Engineer Remote · San Francisco, CA · Bangalore, India

Customers come to Run BiOS to fine-tune open models on dedicated GPUs, billed per second, and to serve what they train through one API. As an Applied Machine Learning Engineer you make their models work: you take fine-tuning jobs from dataset to deployed endpoint, build the tooling that makes that path boring, and turn individual customer problems into platform capabilities.

What you'll do:

• Own fine-tuning engagements end to end: dataset inspection, method selection, run configuration, evaluation, and handoff.
• Build internal tooling for dataset validation, training orchestration, and model evaluation across a catalog of 250k+ open models.
• Debug the weird ones: loss spikes, adapter pathologies, tokenization edge cases, VRAM ceilings.
• Feed recurring customer patterns back to product and research as concrete, prioritized proposals.
• Help customers serve their fine-tuned weights through our inference stack.

What you bring:

• At least 5 years applying machine learning in production environments.
• Real experience fine-tuning LLMs or vision-language models — configuring runs, reading curves, not only calling APIs.
• Strong Python and PyTorch, and comfortable reasoning about GPU memory when things get tight.
• Data instincts: you look at the dataset before you touch the model.
• Clear communication — you can explain a failed run to a customer without hand-waving.