About the Role As a Founding Engineer focused on AI and machine learning, you will own the intelligence layer of an AI recruiting marketplace. You will build recommendation, ranking, retrieval, and LLM-powered matching systems that help connect candidates with relevant roles. What You'll Do • Own recommendation, ranking, and retrieval systems from design through production. • Build and improve LLM-powered matching features, measuring their impact on candidate-role alignment. • Take product features from problem definition to production and ship improvements at a rapid pace. • Architect and maintain the data pipelines and production services that support machine learning models. • Work directly with company leadership to turn product goals into deployed systems. What We're Looking For • Two to five years of experience building and shipping end-to-end software features in production. • Hands-on experience building recommendation, ranking, or machine learning-based matching systems for real users. • Experience building LLM API-powered features and shipping machine learning models or products to production. • Strong production engineering skills in TypeScript or Python, along with experience using PyTorch, TensorFlow, or equivalent frameworks. • Experience building and maintaining production data pipelines and services, with strong computer science fundamentals. • More than six months of substantive work experience in the United States, plus a substantive machine learning role at a recognized product company or credible startup. • Comfort working in a fast-paced startup environment with frequent iteration and daily shipping. • Demonstrated technical achievement through strong open-source contributions, notable personal projects, or comparable accomplishments. • React experience is helpful, as is familiarity with Supabase, Prisma, database design, Typesense or similar search infrastructure, embeddings, vector search, and workflow automation tools. Compensation & Benefits Base salary is $130,000 to $170,000 annually, plus founding-hire equity. Visa sponsorship is available for candidates eligible for a supported sponsorship route. Location On-site in San Francisco, California, six days per week. Candidates must be based in San Francisco or willing to relocate.