Matias Woloski
Co-Founder at Portal Bosque
Buenos Aires, Autonomous City of Buenos Aires, Uruguay
Summary
🤩
Rockstar🎓
Top SchoolMatias Woloski is a seasoned technology founder and engineering leader with 14 years of experience building developer-focused security products, best known as Co-Founder and CTO of Auth0. He combines hands-on full-stack development—contributing to open-source projects from front-end UX improvements in Auth0 Lock to backend security fixes in node-jsonwebtoken and xml-crypto—with strategic product incubation as Head of Auth0 Lab at Okta. Based in Buenos Aires with a background growing companies from boutique consultancies to 100+ employee firms, he excels at translating complex identity and cryptography challenges into reliable, developer-friendly platforms. He also co-founded Portal Bosque, a non-profit cultural and educational space, reflecting a commitment to community impact beyond tech. Known for pragmatic security-first engineering and mentoring teams, he pairs deep technical contributions with product intuition and organizational growth.
14 years of coding experience
22 years of employment as a software developer
Universidad de 'San Andrés'Ingenieria en Informatica Ingenieria en Informatica, Ingenieria en Informatica Ingenieria en Informatica at University of Buenos Aires
Stackoverflow
2,873reputation
242kreached
45answers
3questions
jwt
top-5%
Github Skills (29)
algorithms10
javascript10
sha10
testing10
locking10
css10
user-interface10
digital-signature10
security10
cryptography10
jwt10
html10
xml10
nodejs10
locks10
Programming languages (12)
Github contributions (5)
auth0/node-jsonwebtoken
Jun 2013 - Nov 2014
JsonWebToken implementation for node.js http://self-issued.info/docs/draft-ietf-oauth-json-web-token.html
Role in this project:
Back-end Developer
Back-end DeveloperContributions:30 commits, 2 comments in 1 year 5 months
Contributions summary:Matias primarily focused on improving the security and reliability of the `node-jsonwebtoken` library. Their contributions included fixing a security vulnerability related to the 'alg: none' setting and addressing bugs related to the handling of token expiration and audience validation. The user also made adjustments to the code to ensure correct calculation of expiration timestamps and incorporated changes from a merge request. These changes demonstrate a focus on security and adherence to industry standards.
jsonwebtokennode-jstokenjson-web-tokenweb-token
jsonwebtoken/jsonwebtoken.github.io
Mar 2014 - Jul 2016
Developer-centric site to create awareness of JWTs and troubleshoot them.
Role in this project:Front-end Developer
Front-end DeveloperContributions:50 commits, 29 PRs, 36 pushes in 2 years 4 months
Contributions summary:Matias primarily focused on the front-end development of the website. Their contributions involved changing the look and feel by adding new libraries and modifying the HTML and CSS. They also added a footer to the site. Additionally, they removed certain elements, such as usage examples, from the interface.
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