Senior Full-Stack Engineer

About the Role Join a team building infrastructure that helps improve the reliability of AI agents in production. In this customer-facing, full-stack role, you will embed monitoring and evaluation capabilities into real agent workflows and help customers make sound technical decisions. What You'll Do Build and ship user-facing features across frontend and backend systems. Deploy and maintain applications in cloud environments and integrate them into customer codebases and production AI systems. Bring monitoring and evaluation into agent workflows, and support customers with deployment and ongoing use. Guide customers through technical decisions about agent monitoring and evaluation strategy. Design and implement production database schemas, queries, APIs, and integrations. Collaborate through version control and shared development workflows, and travel to customer sites as needed. What We're Looking For At least 3 years of professional experience building and delivering full-stack applications, including 3 to 7 years in a high-touch, solutions-oriented B2B technology role. Proficiency across frontend and backend development, with production experience in at least one modern backend language or framework and experience with modern frontend frameworks or libraries. Experience with production databases, cloud deployments, API design and integration, and collaborative version control workflows. Experience in a forward-deployed or solutions architecture role, including embedding platforms in customer systems and advising customers on technical approaches. Open-source contributions or experience maintaining public code repositories are a plus. Compensation & Benefits Annual salary range: $200,000 to $300,000 USD. Visa sponsorship is available. Location On-site in San Francisco, California, United States. Travel to customer sites may be required.