Guadalajara, México

LinkedIn GitHubantonioguardadodev@gmail.com

BuildProducts.ScalePlatforms.Ship Fast.

Your New Frontend Ally

Antonio Guardado

Frontend engineer who loves building products across web, Chrome extensions, desktop, and mobile platforms.

Say Hello→

Years of Experience

Companies & Products Built

Platforms (Web, Extension, Desktop, Mobile)

Curiosity & Drive

Strategy

How I Tackle Challenges

Frontend Architecture & Scalability

Designing and building modular, scalable frontend systems with React, TypeScript, and modern patterns like Compound Components, Context API, and code splitting.

Cross-Platform Development

From Chrome Extensions to Electron desktop apps and React Native mobile — shipping across every platform a product needs.

Product Engineering & Delivery

Owning features end-to-end: from product discovery and stakeholder collaboration to roadmap execution and iterative delivery with measurable impact.

Performance & Reliability

Optimizing load times, implementing observability with Datadog and Sentry, and keeping products fast, stable, and well-monitored.

About Me

Based inGuadalajara, Mexico

Emailantonioguardadodev@gmail.com

A Bit About Me & What I Bring

I'm Antonio Guardado — a frontend engineer from Guadalajara, Mexico with 4+ years of experience building user-facing products across web, Chrome extensions, desktop, and mobile. I care deeply about craft, product thinking, and shipping things that actually matter to people.

Key Skills

React, TypeScript & Next.js
Chrome Extensions & Electron
React Native Mobile Apps
Observability (Datadog, Sentry)

Career

Experience

Sendspark

Nov 2021 – Present

Senior Frontend Engineer / Product Engineering Lead

Led development of core revenue-impacting applications in a B2B SaaS environment, including a Chrome Extension and Desktop App, used by thousands of users

Owned frontend architecture and technical decisions focused on scalability, performance and maintainability

Built and optimized React and TypeScript-based applications and features used by thousands of users

Led the design and implementation of native integrations with HubSpot and Zapier, enabling seamless data synchronization across platforms

Designed and implemented monitoring and observability using Datadog and Sentry to improve system reliability

Improved application performance, load times and stability through continuous optimization

Collaborated cross-functionally with Product, Design and Business teams on product development

Built integrations with multiple external platforms using JavaScript and Node.js

Established frontend standards, documentation and best practices to improve team velocity

Mentored engineers through code reviews and technical guidance

Milktech

Sep 2021 – Feb 2022

React Native Developer

Built and shipped mobile features using React Native

Collaborated with product and design on iterative delivery

Nei Digital

Apr 2021 – Nov 2021

Full Stack Developer

Developed full stack web applications with Node.js and React

Implemented REST APIs and database integrations

BlueTerrier Studio

Nov 2020 – Apr 2021

Web Developer

Built responsive web experiences for clients

Focused on performance and cross-browser compatibility

Binden

Jun 2020 – Sep 2020

Web Developer

Developed web applications and contributed to frontend architecture

Impact

Highlights

Cross-Platform DeliveryLed full product lifecycle across web, extension, desktop, and mobile→

Performance OptimizationImproved load times and reduced runtime errors through code splitting and lazy loading→

Observability & MonitoringStructured monitoring with Datadog and Sentry for data-informed decisions→

Team VelocityIncreased team velocity through documentation, onboarding, and reusable UI patterns→

Toolkit

Skills & Tools

Frontend

ReactNext.jsTypeScriptJavaScriptHTML5CSS3

Cross-Platform

Chrome ExtensionsElectronReact Native

Product Engineering

Feature OwnershipProduct DiscoveryRoadmap Execution

Backend & APIs

Node.jsREST APIsGraphQLMongoDB

Quality & Infrastructure

JestCypressDockerGCPDatadogSentry

FAQ

Common Questions

What kind of projects do you work on?+

I gravitate toward frontend-heavy products — web apps, Chrome extensions, desktop apps (Electron), and mobile apps (React Native). I like being close to the product and owning features end-to-end.

What drives you as an engineer?+

I love the intersection of engineering and product thinking. Building something that's technically solid and genuinely useful to people is what keeps me going.

Startups or larger companies?+

I've done both — early-stage startups and growing product teams. I thrive in fast-paced environments where there's real ownership and room to shape things.

How do you approach new projects?+

I start by understanding the product goals and who it serves, then translate that into scalable technical solutions with iterative delivery.

Contact

Let's Connect

Whether it's about a project, an idea, or just to say hi — I'd love to hear from you.

antonioguardadodev@gmail.com

LinkedIn GitHub

Get in Touch