Tony Kovanen
Founding Engineer at Mastra
Helsinki, Mainland Finland
Summary
🤩
Rockstar🎓
Top SchoolTony Kovanen is a founding engineer and AI infrastructure builder based in Helsinki with 12 years of experience shipping developer-facing platforms and frameworks. He co-created Next.js and served as Co-founder & CTO at Vercel, later holding senior engineering and CTO roles at Gatsby, Based.io, and Token Terminal, blending product leadership with deep hands-on implementation. Currently leading engineering at Mastra, he contributes to its TypeScript AI framework—fixing deployment, dynamic imports, and observability issues to make agent tooling production-ready across Cloudflare and other targets. His background spans full-stack systems, telemetry and performance engineering, and developer tooling, with early research and teaching work in machine learning and computer vision at the University of Helsinki. Known for quietly fixing intricate infra edge cases, he combines startup grit with a strong open-source track record that materially improved major web frameworks.
12 years of coding experience
11 years of employment as a software developer
Ylioppilastutkinto / High school High School/Secondary Diplomas and Certificates, Ylioppilastutkinto / High school High School/Secondary Diplomas and Certificates at Kulosaari Secondary SchoolMaster of Science - MS Computer Science, Master of Science - MS Computer Science at University of Helsinki
Github Skills (24)
javascript10
cloudflare10
deploying10
typescript10
webapp10
typescript-types10
nodejs10
typescripts10
telemetry10
gatsby10
react10
wpgraphql9
wordpress-graphql9
ai9
agent9
Programming languages (7)
Github contributions (5)
mastra-ai/mastra
Jan 2025 - Apr 2025
The TypeScript AI agent framework. ⚡ Assistants, RAG, observability. Supports any LLM: GPT-4, Claude, Gemini, Llama.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:57 reviews, 67 PRs, 241 pushes in 2 months
Contributions summary:Tony made several contributions focused on improving the deployment and functionality of the AI agent framework. They addressed configuration and bundling issues, including fixes for Cloudflare deployments. Further work involved making dynamic imports function correctly and introducing configurable worker names and route support. Additional commits tackled deployer fixes and added features like optional dispatcher namespace and worker tagging to improve the framework's utility.
agentsaichatbotsevalsjavascript
gatsbyjs/gatsby
Aug 2018 - Dec 2019
The best React-based framework with performance, scalability and security built in.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:5 commits, 5 PRs, 110 pushes in 1 year 4 months
Contributions summary:Tony contributed to the Gatsby framework, focusing on improvements related to telemetry, which included adding and aggregating data for performance metrics. They implemented features to collect and report bundle and page data stats and modified existing telemetry logic. The user also worked on fixing bugs related to telemetry, such as suppressing flushing when disabled and reporting unique plugins.
gatsbyreactweb-appfastestcompiler
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