As a Senior AI/ML Engineer at Thriveaihealth.com, you'll architect and build the multi-agent, voice-powered systems for our AI health coach. This zero-to-one builder's role involves LLM development, agent orchestration, evaluation, and deployment, owning the full arc from prototype to production. You'll solve complex problems, designing fast, safe, and personalized systems to help millions live better lives. Location: San Francisco, USA Why this role is remarkable: Building the world’s most personalized AI health coach, redefining health products with proactive, adaptive, and AI-powered solutions. Backed by Thrive Global and OpenAI, creating a new category of health product at the intersection of behavior science, generative AI, and real-world data. Direct ownership of multi-agent, voice-powered systems that will touch millions of lives, working with a high-trust, high-velocity founding team.