Sergio Xalambrí

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Sergio Xalambrí

Web developer, open-source maintainer and Remix contributor.

Everything an event, podcast or publication needs to introduce me, free to use as is. If you need something that isn’t here, write to me with the form at the end of this page.

Quick facts

Name
Sergio Xalambrí
Pronunciation
SEHR-hyoh sah-lahm-BREE (the X sounds like an S)
Pronouns
He/Him
Role
Web Developer at Daffy
Based in
Lima, Peru (PET, UTC−5)
From
Argentina
Languages
English, Spanish
Handle
@sergiodxa

Bios

Written in the third person. Pick the length your program or form asks for.

One line

Podcast show notes and social posts

18 words

Sergio Xalambrí is an Argentinian web developer at Daffy and the maintainer of Remix Auth and Remix Utils.

Short

Event apps and printed programs

41 words

Sergio Xalambrí is an Argentinian web developer with more than a decade of experience. He works at Daffy and maintains open-source libraries around React Router, Remix, and OAuth 2.0. He enjoys building full-stack applications, designing libraries, and exploring the Web Platform.

Medium

Conference websites and speaker pages

87 words

Sergio Xalambrí is an Argentinian web developer with more than a decade of experience, based in Lima, Peru. He works at Daffy, where he builds the web app that helps people give to the causes they care about. He maintains Remix Auth and Remix Utils, two of the most used libraries in the Remix and React Router ecosystem, contributes to Remix and React Router themselves, and publishes the @sdxc packages for building apps on the Web Platform. He writes articles and tutorials about web development at sergiodxa.com.

Long

Brochures and detailed profiles

185 words

Sergio Xalambrí is an Argentinian web developer with more than a decade of experience building for the web, now based in Lima, Peru. He works at Daffy, a donor-advised fund that helps people give to the causes they care about, where he builds the web app at the center of the product.

He is best known in the Remix community for Remix Auth, the authentication library many Remix and React Router apps sign their users in with, and Remix Utils, a collection of utilities for routes, responses, and the server. He contributes to Remix and React Router, and maintains the @sdxc packages, a set of libraries for building full-stack apps on Web Platform APIs, documented at sdxc.dev.

Sergio has spoken at Remix Conf Europe and Remix Jam, and on podcasts and meetups across Latin America, in English and Spanish. He has written hundreds of articles and tutorials at sergiodxa.com, focused on practical patterns for authentication, data loading, and designing libraries. He enjoys building full-stack applications, designing APIs other developers find obvious, and exploring what the Web Platform can do without a framework in the way.

Introduction for a host

Read aloud on stage or at the start of an episode

45 words

Our next speaker is Sergio Xalambrí. Sergio is a web developer at Daffy and the person behind Remix Auth and Remix Utils, two libraries you’ve probably used if you’ve built anything with Remix or React Router. He joins us from Lima, Peru. Please welcome Sergio!

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Topics

  • RemixBuilding full-stack apps with Remix v3, its router, middleware and components.
  • React RouterFramework mode, data loading, actions, authentication and patterns that scale.
  • The @sdxc packagesLibraries for authentication, jobs, mail, caching and more on Web Platform APIs.
  • Authentication and OAuth 2.0Signing users in safely: sessions, OAuth 2.0, OpenID Connect and passkeys.
  • Maintaining open sourceDesigning APIs, versioning and supporting libraries thousands of apps rely on.
  • Web developmentThe Web Platform, progressive enhancement, and designing libraries people enjoy.

Open source

  • Remix AuthAuthentication for Remix and React Router apps, with dozens of strategies.
  • Remix UtilsUtilities for routes, responses, server-sent events, CSRF and more.
  • The @sdxc packagesA monorepo of packages and apps built on Web Platform APIs, at sdxc.dev.
  • RemixContributor to the framework and its packages.
  • React RouterContributor to the router and its framework mode.

Talks and appearances

  1. Remix Jam 2026, Toronto · October 2026
  2. Remix Conf Europe 2022 · November 2022
  3. Dev Talks Perú · May 2021
  4. Goncy
  5. Meetup.js Argentina
  6. Leonidas Esteban
  7. Leonidas Esteban
  8. Leonidas Esteban

Formats

Lightning talks
Five to ten minutes on one idea.
Talks
Around thirty minutes, with or without live coding.
Keynotes
Opening or closing a conference.
Workshops
Hands-on and paid, from half a day to a full day.
Recording
Talks may be recorded and published.
Travel
In-person events need travel and lodging covered.

Invite me

Organizing a conference, meetup, podcast or workshop? Tell me about it and I’ll reply by email.

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