Hernán Rajchert
Buenos Aires, Autonomous City of Buenos Aires, Argentina
Summary
🤩
Rockstar🎓
Top SchoolHernán Rajchert is a full-stack software engineer with 18 years of experience specializing in web technologies, typed languages and functional programming, currently experienced with TypeScript and PureScript. He has led engineering efforts from CTO-level product pivots and microservice migrations to principal roles building the Marlowe smart-contract suite at IOHK, blending Haskell, PureScript and formal verification. A hands-on contributor to high-profile open-source projects like DefinitelyTyped and the Plutus/Marlowe repos, he bridges frontend polish and backend correctness, often improving type safety and developer workflows. He co-organizes developer meetups in Buenos Aires, teaches through tech blogging and online courses, and champions reproducible deployments and pair-programming practices. Holding Argentinean and Polish citizenship and willing to relocate, he combines startup grit with enterprise-grade engineering discipline.
18 years of coding experience
13 years of employment as a software developer
Bachelor Electronics, Bachelor Electronics at ORTIng Software Engineer, Ing Software Engineer at Instituto Tecnológico de Buenos Aires
Spanish, English
Stackoverflow
906reputation
47kreached
16answers
16questions
Github Skills (27)
unit-testing10
javascript10
symfony-bundle10
typescript10
user-authentication10
authentication10
typescript-definitions10
type-definition10
php10
api10
front-end-development10
tailwindcss10
typescript-types10
symfony10
symfony-ux10
Programming languages (16)
Github contributions (5)
IntersectMBO/plutus
Nov 2020 - Oct 2021
The Plutus language implementation and tools
Role in this project:
Front-end Developer
Front-end DeveloperContributions:462 reviews, 227 commits, 189 PRs in 11 months
Contributions summary:Hernán primarily focused on front-end development tasks within the Plutus repository, specifically related to the Marlowe Playground. They implemented features such as hiding or displaying specific elements in the UI, integrating form input elements, and improving the overall UI design of modal dialogs. Their work included refactoring components, integrating new design elements like rounded buttons with icons, and addressing issues in the styling and layout. Additionally, they made improvements to the website design.
programming-languageblockchainsmart-contractsplutus
hwi/HWIOAuthBundle
Jun 2014 - Jul 2014
OAuth client integration for Symfony. Supports both OAuth1.0a and OAuth2.
Role in this project:Back-end Developer
Back-end DeveloperContributions:8 commits in 6 days
Contributions summary:Hernán primarily contributed to the implementation of an Auth0 resource owner for OAuth authentication. This involved adding new code, modifying existing configuration files, and incorporating unit tests. The work included modifying the configuration of authorization, access token, and user info URLs, and refactoring the code to align with pull request recommendations. This user's contribution focused on expanding the OAuth integration capabilities of the Symfony bundle.
apiphpauthenticationsymfony-bundleoauth1
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.