Yujohn Nattrass
Software Engineer at Mastra
Greater Seattle Area United States
Summary
🤩
Rockstar🎓
Top SchoolYujohn Nattrass is a software engineer with seven years of experience building cloud-native, edge-first applications and developer tooling. He co-created Able, an open-source A/B testing framework for Jamstack sites, and has a proven track record designing scalable AWS and Cloudflare-based infrastructures. At Netlify he drove large migrations (moving 11TB off Firebase to S3) and later contributed backend and DevOps work for Mastra, adding voice APIs and hardening telemetry for a TypeScript AI agent framework. Comfortable across Ruby, JavaScript/TypeScript, Go, Docker, AWS, and Cloudflare Workers, he blends pragmatic infrastructure automation with hands-on backend coding. Based in Bellevue with roots in Queens, he pairs operational rigor with open-source sensibilities and a knack for shipping production-ready systems that cut cost and complexity.
7 years of coding experience
6 years of employment as a software developer
Associate's degree Law Enforcement, Associate's degree Law Enforcement at Justice Institute of British ColumbiaSoftware Engineering, Software Engineering at Launch School
Github Skills (12)
typescript10
nodejs10
typescripts10
hono10
typescript-types10
cicd10
apidoc9
telemetry9
api9
vercel8
ai7
agent7
Programming languages (8)
Github contributions (5)
mastra-ai/mastra
Oct 2024 - Jul 2026
Mastra is the modern TypeScript framework for AI-powered applications and agents.
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:180 reviews, 283 PRs, 811 pushes in 1 year 9 months
Contributions summary:Yujohn primarily focused on back-end infrastructure and deployment configurations within the Mastra project. Their work involved setting a request payload limit to align with Vercel function limitations. The user also addressed a bug within the telemetry system by making the trace name configurable to fix langfuse exporter issues. Furthermore, the user was instrumental in adding voice-related API endpoints to the Hono server, which facilitated the integration of speech-to-text and text-to-speech capabilities.
aitypescriptagentschatbotsjavascript
YujohnNattrass/Ebean
Jun 2019 - May 2023
Contributions:1 PR, 74 pushes, 1 branch in 4 years
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