Staff Machine Learning Engineer at AppFolio

AppFolio is hiring a Staff Machine Learning Engineer to build and operate its ML platform across AWS, including model training, fine-tuning, inference, RAG, evaluation, observability, reliability, and cost optimization. The role partners with Voice & Agents and Research ML engineers to harden prototypes into production systems, supports multi-provider LLM access, and implements AI safety and authorization controls. Candidates need 7+ years of experience, production ML infrastructure experience, LLM and small-language-model expertise, Python and cloud-native engineering skills, and experience with RAG, agents, and AI cost optimization.