Guillermo Diéguez

Head of frontend, Exa Labs

Jun 2026 – Present

Senior frontend developer

Jul 2024 – Jun 2026

• Ship the Expo app to iOS, Android and the web: over 100 mobile releases since November 2024.
• Built the app side of the Base launch, and swaps and sends across networks through LI.FI.
• Set up localization in English, Spanish and Portuguese.
• Extended the Maestro end-to-end tests for payment flows and traced release blockers to their root cause, including bugs in third-party libraries, some of which I reported upstream.

Senior React developer, TheStartup.com

Nov 2022 – Jul 2024

• Built CMS-style content features and improved multi-tenancy in a SaaS for entrepreneurship programs. Part of the small team that took the company through funding rounds totaling over 1M USD.
• Led technical interviews for senior React roles.

Senior frontend engineer, Rather Labs

Apr 2022 – Aug 2022

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

Software developer, OneBitTech

Oct 2020 – Dec 2021

• Owned the Unity and C# frontend of casino games played by thousands, for its studio Ruvibet, working closely with its backend and UI/UX teams.
• Created the training program for new team members and introduced unit testing, pair and mob programming.

Software developer, from trainee to junior, Siltium

Apr 2019 – Oct 2020

• Built augmented reality experiences with Unity and Vuforia, 3D web apps with react-three-fiber, Xamarin apps and .NET Core APIs.

Sole developer, Supra Argentina

Mar 2026 – Present

• Build a construction company's inventory system, in development, that records movements where they happen.
• Map each flow with the people at Supra and validate the diagrams with them before building it.