Customer Engineer (Fully Remote, North American or European Time Zones)

Partner with customer engineering teams on real agent system implementations and design and build agents collaboratively with their engineers. Improve system reliability, evaluation approaches, monitoring and scaling methods, and guide teams from prototype into production-ready systems. Develop customer expertise in the Mastra framework, document patterns and share best practices across accounts. On the framework side, convert recurring customer challenges into open-source improvements, resolve reliability and performance bottlenecks, build and enhance foundational primitives, improve overall code quality, and shape roadmap decisions using production insights.

Proven experience building and operating AI systems in production environments. Ability to think at the system level beyond implementation specifics and to recognize patterns across multiple problem domains. Strong commitment to developer experience and ergonomics. Preference for broad ownership rather than a narrowly specialized scope, and comfort alternating between hands-on customer work and platform design. Strong TypeScript skills are expected given the framework. The hiring process is a recruiter intro call, an interview with co-founder Shane Thomas, a peer interview with existing customer engineers, and a take-home project reviewed by the team.