LinkedIn Voices: Sam Bhagwat

Fatima Zaiter
3 days ago
2 min read

AI engineering isn’t just about writing code, it’s about building systems that scale, perform, and transform industries. Sam Bhagwat, developer, author, and founder of Mastra, went from shaping the open-source world with Gatsby.js to creating a TypeScript framework that empowers developers to build AI agents, while also sharing his insights in Principles of Building AI Agents.

Name & Professional Identity

Sam Bhagwat – Founder of Mastra (YC W25), author of Principles of Building AI Agents, and a seasoned open-source contributor with deep expertise in JavaScript and TypeScript ecosystems.

Niche & Specialization

Building scalable AI agents and frameworks
Developer-focused AI education and tooling
Open-source engineering best practices

Target Audience

Developers and engineers building AI tools
Startup founders exploring AI integration
Product managers and technical leaders interested in AI strategy

Career Journey & Achievements

Sam spent much of the last decade contributing to open-source projects, most notably Gatsby.js, helping shape one of the most popular web frameworks in the JavaScript ecosystem.

Today, he leads Mastra, a TypeScript framework that simplifies building AI agents. His book, Principles of Building AI Agents, has become a must-read for developers, PMs, and startup leaders looking to understand AI engineering.

He recently shared a story about a conversation with a $20M+ ARR startup CEO: after discussing Mastra’s growth strategies, they debated the scale of his book distribution - $750k versus $1.5M - illustrating the Silicon Valley mindset of thinking bigger and doubling down on what works.

Content Strategy & Teaching Approach

Sam combines technical depth with accessibility. Through posts and his book, he breaks down AI engineering concepts for developers and decision-makers alike, making cutting-edge tools approachable and actionable.

Metrics & Impact

24,682 followers on LinkedIn
Creator of Mastra, now used by developers building AI agents
Author of a popular book guiding AI agent development

Sam Bhagwat | Evil Martians

Personality & Background Notes

Open-source veteran, Silicon Valley thinker, and advocate for building developer-first AI tools. Sam’s approach is technical yet practical, always focused on empowering others to create at scale.

Why He Matters

Sam Bhagwat exemplifies the bridge between open-source engineering and the next frontier of AI. By translating complex AI concepts into usable frameworks and teaching materials, he’s shaping the way developers and startups build intelligent agents.

Quick Profile Summary

Detail	Info
Followers	24,682 on LinkedIn
Startup	Mastra (YC W25)
Recognition	Author of Principles of Building AI Agents
Background	Open-source contributor, former Gatsby.js developer
Website	https://mastra.ai