LLM Fine-tuning Engineer

Scale AI is seeking an LLM Fine-tuning Engineer to help our enterprise customers customize large language models for their specific use cases. You will build and optimize fine-tuning pipelines, develop data curation workflows, and ensure model quality meets production standards. You will work with a diverse set of domains including legal, healthcare, and finance, adapting foundation models to perform specialized tasks with high accuracy and reliability. This role sits at the intersection of ML engineering and data quality, requiring both strong technical skills and an understanding of how data quality impacts model performance.

- 3+ years of ML engineering experience - Hands-on experience fine-tuning LLMs (LoRA, QLoRA, PEFT) - Strong Python and PyTorch skills - Experience with Hugging Face training infrastructure - Understanding of evaluation methodology for LLMs - BS/MS in Computer Science or related field