Lead Software Engineer, Platform

ABOUT THE ROLE Join a small platform team at an AI company building document processing systems. You will strengthen the core platform that runs customer workloads, with a focus on performance, reliability, and cost efficiency. WHAT YOU'LL DO - Own and improve the platform that runs document processing jobs, ensuring speed, reliability, and cost efficiency as usage grows. - Partner with machine learning engineers to serve in-house models efficiently and integrate them into production workflows. - Build and maintain infrastructure for databases, task orchestration, workload scheduling, and cloud deployments. - Improve distributed systems by addressing latency, reliability, and scaling challenges. - Participate in an on-call rotation and take end-to-end ownership of platform health. WHAT WE'RE LOOKING FOR - At least 5 years of platform or backend engineering experience, including distributed systems work. - Experience building and scaling core infrastructure, task orchestration, and reliable platforms. - Application-level engineering experience in addition to infrastructure work. - Proficiency in Python, or deep Go or Rust experience and willingness to work in Python. - Experience with on-call operations, cloud infrastructure, and optimizing model serving. - Background in a startup or demonstrated senior-level growth and ownership in a larger organization. COMPENSATION & BENEFITS Base salary: $220,000 to $320,000 annually. Visa sponsorship is available. LOCATION On-site in San Francisco, California, United States.