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MastraPosted Oct 7, 2026
AI Engineer
Remotefull timeRemoteH1B: no
Mastra AI Engineer builds features to help developers understand, evaluate, and improve AI agents over time. The role involves running experiments, benchmarking, and shaping the framework based on agent performance.
Responsibilities
- Build the features that make this possible: tools for understanding traces, evaluating agent behavior, and turning results into improvements.
- Run experiments on Mastra’s primitives, investigate where they perform well and where they fall short, and use those findings to improve their configuration and behavior. You’ll help turn that work into capabilities developers can use in their own applications.
Qualification
Small team
Required
- Shipped agents and agentic applications into production
- Tuned and tweaked them to improve accuracy
- You need to be able to benchmark your results against existing datasets, or intelligently creating.
- Mastra is the open-source TypeScript framework for building AI agents. Built by the team behind Gatsby, backed by Y Combinator and Spark Capital, with $35M raised total. We went from 0 to 28k+ stars and 2M+ weekly npm downloads in less than 2 years.
- Small team, shipping fast, fully remote. Most of us work across North American and European time zones.
Company
Mastra
View company pageSource: ashby
Active within the past hour
Remote-friendly