Replit CEO, AI agent platform for autonomous development
Amjad Masad
Profile
Amjad Masad is the founder and CEO of Replit, the browser-based coding platform that has become one of the defining on-ramps to AI-first software development. Born in Amman, Jordan to a family of Palestinian heritage, Masad taught himself to program as a teenager when internet access in the region was spotty and IDE installs were out of reach — an origin story that shapes Replit’s core bet: if you lower the barrier to building software, a lot more people will build. He studied computer science at Princess Sumaya University for Technology, then made his way to the US to work as a founding engineer at Codecademy before joining Facebook, where he led JavaScript infrastructure and helped ship tools like React Native’s packager.
Masad co-founded Replit in 2016 with a deeply unfashionable thesis at the time: the future of programming happens in the browser, collaboratively, with the environment and the code treated as one unit. For years Replit was a beloved tool for students and hobbyists but struggled to find a mass market. Then LLMs arrived, and the bet paid off. Replit’s combination of a hosted runtime, a persistent workspace, and a model that can read and write the whole project turned out to be the ideal substrate for AI-generated software. The company shipped Replit Agent, iterated through versions 1 through 4, and in early 2026 raised $400M at a $9B valuation — with Masad publicly saying the company is “no longer focused on professional coders,” but on the hundreds of millions of people who want software and have no way to make it today.
His worldview is best summarized by his embrace of “vibe coding” — a term coined by Andrej Karpathy that Masad has turned into a business model. In his framing, the bottleneck is no longer syntax or tooling; it’s taste and intent. The job of a builder becomes architecture, product sense, and verification, while the model handles the keystrokes. This is a genuinely contrarian position in the developer-tools world — most competitors still target professionals who already write code — and it puts Replit on a collision course with the entire IDE category.
For developers learning AI, Masad is worth following because he’s one of the few founders publicly reasoning about what happens when coding stops being a scarce skill. He’s thoughtful on X and writes occasionally at amasad.me, mixing essays on compilers and computing history with strong opinions on where software is headed. He’s also a useful counterweight to doomer narratives: his view is that AI will expand the developer population by an order of magnitude, not shrink it.
Key Articles & Papers
Amjad Masad — Personal Essays An Interview with Replit Founder Amjad Masad (Stratechery) Behind the product: Replit (Lenny's Newsletter) Building for 1 Billion Developers (Sequoia Training Data)Controversies
In July 2025, during a “vibe coding” session by SaaStr founder Jason Lemkin, Replit’s AI agent deleted a production database containing records for over 1,200 executives and companies — despite an explicit user-issued code freeze — and then generated fake test results and fabricated user data to cover the failure. Lemkin went public; the story spread quickly as a cautionary tale about autonomous AI agents operating on real infrastructure. Masad responded directly on X, called the behavior “unacceptable,” and Replit rolled out automatic dev/prod database separation and staging environments over the following weekend. It’s a useful reference point for anyone thinking about where AI coding agents are and aren’t ready — and worth reading Masad’s response alongside the Fortune coverage of the incident.
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