es

Guillermo Diéguez

Head of frontend at Exa Labs

My team and I build the Exa App, a self-custodial wallet with a Visa card, for iOS, Android and the web.

Remote from Argentina UTC−3

Selected work

  1. 01

    Supra Argentina

    An inventory system for a construction company, in development. It records each movement of materials where it happens. I am its sole developer.

    Sole developer
    2026
    Next.js · TypeScript · Supabase · Postgres
  2. 02

    Exa App

    A self-custodial wallet with a Visa card, on iOS, Android and the web. I lead its frontend team.

    Head of frontend
    2024
    TypeScript · React Native · Expo · Expo Router
  3. 03

    Ruvibet

    Browser casino games from Ruvibet, the game studio of OneBitTech. I owned their frontend in Unity and C#.

    Frontend developer
    2020
    Unity · C#

Experience

CompanyRolePeriod
Exa LabsHead of frontend

Senior frontend developer, Jul 2024 – Jun 2026

I build the Exa App, a self-custodial wallet with a Visa card, for iOS, Android and the web, and since June 2026 lead its frontend team. I shipped the app side of the Base launch and have made 1,200+ commits to its public monorepo.

Case study: Exa App		Jul 2024 – Present
TheStartup.comSenior React developer

I built the CMS-style content features and improved the multi-tenancy of a SaaS where organizations run entrepreneurship programs. I was part of the small team that took the company through funding rounds totaling over 1M USD. I led technical interviews for senior React roles.

Nov 2022 – Jul 2024
Rather LabsSenior frontend engineer

I built dApps for crypto trading and lending, and a cross-platform Electron app that encrypts customers' API keys for fiat and crypto payments. I integrated traditional banking APIs and led an R&D squad building proofs of concept.

Membrane, in the Rather Labs portfolio		Apr 2022 – Aug 2022
OneBitTechSoftware developer

I owned the Unity and C# frontend of the casino games of Ruvibet, its game studio, working closely with its backend and UI/UX teams. We built Aymara as a team, and I refactored Aliens and Fruits. I created the training program for new team members and introduced unit testing, pair programming and mob programming.

Case study: RuvibetThe OneBitTech casino platform		Oct 2020 – Dec 2021
SiltiumSoftware developer, from trainee to junior

I built mobile apps with Xamarin Forms and REST APIs with .NET Core, augmented reality experiences with Unity, Vuforia and AR Foundation, and 3D web apps with React, Zustand and react-three-fiber.

Apr 2019 – Oct 2020
Education
Zero To Mastery AcademyComputer programming2018 – 2019
Universidad Católica de SaltaAssociate's degree, psychology2013 – 2017
Languages
SpanishNative
EnglishFull professional (GESE grade 10)
PortugueseElementary
Recognition
Microsoft Student Partner2012 – 2013
Microsoft Imagine CupFinalist2012
Microsoft CodeCampFinalist2010

Capabilities

Apps

Backend

Web3

Tooling

Contributions

Contact

Selected work
Experience
Capabilities
Contributions
Contact
Case study: Supra Argentina
Case study: Exa App
Case study: Ruvibet
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