Nicolás Sabena - Staff Tooling Engineer at Okta

Nicolás Sabena

Staff Tooling Engineer at Okta

Greater Seattle Area United States

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Summary

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Nicolás Sabena is a Staff Tooling Engineer with 12 years of experience building and fixing developer-facing systems, currently focused on JavaScript/TypeScript across frontend and backend at Okta (formerly Auth0). He brings deep expertise in authentication standards—SAML, OAuth2 and OIDC—and has a strong .NET and C# background evidenced by contributions to popular Auth0 .NET client libraries and ASP.NET Core samples. Comfortable bridging support and engineering, he’s solved escalated production issues, mentored teams, and translated real-world customer problems into product improvements. A tinkerer at heart, Nicolás combines practical architecture experience from long-term enterprise work with hands-on coding and a habit of shipping pragmatic, security-conscious tooling.

12 years of coding experience

24 years of employment as a software developer

Computing Engineer, Computer and Information Sciences, General, Computing Engineer, Computer and Information Sciences, General at Universidad Católica de Santiago del Estero

English, Spanish

Stackoverflow

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287kreached

23answers

1question

Badges

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top-1%

Github Skills (26)

apidoc10

web-application-security10

openid-connect10

net10

user-authentication10

authentication10

dotnet10

asp-net-core10

asp-net10

api10

asp-net-core-web-api10

dotnet-core10

jwt10

csharp10

oauth10

Programming languages (10)

C#TypeScriptMDXJavaCSSJavaScriptPHPObjective-C

Github contributions (5)

auth0/auth0.net

Jul 2014 - May 2017

.NET client for the Auth0 Authentication & Management APIs.

Role in this project:

Back-end Developer

Contributions:68 commits, 4 PRs, 17 pushes in 2 years 10 months

Contributions summary:Nicolás implemented features for user login and delegation token retrieval, introducing the `LoginUser` method to handle active authentication. They also added a constructor to the `Client` class and made changes to the tests, specifically in the `Auth0.Net-tests/ConnectionsTests.cs` file to ensure the changes were implemented correctly. Furthermore, the user added support for ISO 8601 and epoch date formats in the `updated_at` field within the `UserInfo` class. The user's work primarily focused on enhancing authentication-related functionalities within the `.NET client`.

authauthenticationdotnetoauth2openid-connect

auth0-samples/auth0-aspnetcore-mvc-samples

Feb 2017 - Oct 2018

Auth0 Integration Samples for ASP.NET Core MVC Web Applications

Role in this project:

Back-end Developer

Contributions:12 commits, 5 PRs, 4 pushes in 1 year 8 months

Contributions summary:Nicolás's contributions center around implementing and modifying authentication and authorization features for ASP.NET Core MVC web applications. They addressed logout redirection issues by updating code to redirect to Auth0's `/v2/logout` endpoint and handling specific events within the OpenID Connect flow. The user also focused on retrieving access token expiration times and handling specific errors related to authentication. These changes involved modifying `Startup.cs`, `AccountController.cs`, and associated configuration files.

authmvcauth0authenticationaspnet

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