Matija Sosic
CEO at WASP
Zagreb, Croatia
Summary
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RockstarMatija Sosic is a seasoned software leader and CEO based in Zagreb with 13 years of experience building full-stack web applications and developer-focused products. He combines hands-on engineering with product leadership at WASP, where he contributes to the open-source Wasp project that accelerates React and Node.js app development. Deeply interested in clean code and functional programming, he has personally redesigned language internals like the Wasp AST and implemented parsing and frontend features that bridge DSL design with practical UI needs. Matija’s work spans both backend and frontend concerns—adding entity form support, JSX rendering in page content, and reusable list components—showing a pragmatic full-stack mindset. He’s focused on making developer workflows faster and more expressive, often solving language and tooling problems that aren’t visible to end users but dramatically improve productivity.
13 years of coding experience
Github Skills (12)
webapp10
haskell9
react9
ui-components9
parserator9
parser9
web-components9
frontend8
web-frontend8
backend8
javascript7
prisma5
Programming languages (8)
Github contributions (5)
wasp-lang/wasp
Mar 2019 - Jan 2023
The fastest way to develop full-stack web apps with React & Node.js.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:253 reviews, 274 commits, 88 PRs in 3 years 10 months
Contributions summary:Matija primarily focused on developing features for the Wasp language, contributing to both the frontend and backend aspects. Their work included redesigning the Wasp AST, implementing parsing for app and page declarations, and introducing support for entity-form fields. They also worked on incorporating features for the front-end, like rendering JSX within the page content and implementing a list component for entities.
reactprismaweb-apphaskelljavascript
matijaSos/matijasos.github.io
Jul 2015 - Nov 2021
Contributions:61 commits, 66 pushes, 4 branches in 6 years 4 months
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