Full Stack Engineer

Join a product engineering team building software that helps organizations improve the reliability of AI agents in production. This backend-leaning full-stack role combines hands-on engineering with customer input to shape useful product experiences., * Build product experiences for investigating agent behavior, evaluating results, debugging trajectories, and replaying production activity.

• Work directly with customers to understand where their agents fail, turn those needs into product decisions, and iterate on solutions.
• Develop APIs, data models, internal systems, and user-facing product features across the stack.
• Build agent capabilities that support large-scale investigations of production traces.
• Design platform features such as workspaces, permissions, billing, usage systems, SDKs, and terminal-first developer tools.
• Collaborate with teams deploying AI agents and use their feedback to improve the product.

• Typically 0 to 5 years of full-stack product engineering experience, with a backend focus.
• Experience shipping end-to-end products, influencing product decisions, and supporting production software.
• Strong skills in Python, TypeScript, or Node.js, plus experience with React or Next.js.
• Ability to design clean APIs, model data effectively, build polished product interfaces, and debug across the stack.
• Experience with AI agents, LLM-powered products, agent evaluation or debugging, or developer tools is valuable.
• Comfort working in a fast-paced startup environment and collaborating in person.

Base salary is $150,000 to $275,000 annually. Visa sponsorship is available.