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I'm Ernesto Guardado, a software engineer with 3+ years of experience building scalable web applications using React, Next.js, TypeScript, GraphQL, NestJS, and MongoDB. I work across the stack to deliver responsive user interfaces, API integrations, authentication systems, and business-critical features for production environments. I'm passionate about software architecture, clean code, and continuous professional growth. I enjoy collaborating in Agile teams and translating complex requirements into solid, maintainable software solutions.…I'm Ernesto Guardado, a software engineer with 3+ years of experience building scalable web applications using React, Next.js, TypeScript, GraphQL, NestJS, and MongoDB. I work across the stack to deliver responsive user interfaces, API integrations, authentication systems, and business-critical features for production environments. I'm passionate about software architecture, clean code, and continuous professional growth. I enjoy collaborating in Agile teams and translating complex requirements into solid, maintainable software solutions.

Ernesto Guardado

Front-End Developer, Back-End Developer, Full Stack Developer, +2

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I'm Ernesto Guardado, a software engineer with 3+ years of experience building scalable web applications using React, Next.js, TypeScript, GraphQL, NestJS, and MongoDB. I work across the stack to deliver responsive user interfaces, API integrations, authentication systems, and business-critical features for production environments. I'm passionate about software architecture, clean code, and continuous professional growth. I enjoy collaborating in Agile teams and translating complex requirements into solid, maintainable software solutions.…I'm Ernesto Guardado, a software engineer with 3+ years of experience building scalable web applications using React, Next.js, TypeScript, GraphQL, NestJS, and MongoDB. I work across the stack to deliver responsive user interfaces, API integrations, authentication systems, and business-critical features for production environments. I'm passionate about software architecture, clean code, and continuous professional growth. I enjoy collaborating in Agile teams and translating complex requirements into solid, maintainable software solutions.

Available to hire

I’m Ernesto Guardado, a software engineer with 3+ years of experience building scalable web applications using React, Next.js, TypeScript, GraphQL, NestJS, and MongoDB. I work across the stack to deliver responsive user interfaces, API integrations, authentication systems, and business-critical features for production environments.

I’m passionate about software architecture, clean code, and continuous professional growth. I enjoy collaborating in Agile teams and translating complex requirements into solid, maintainable software solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Spanish; Castilian

Fluent

English

Advanced

Portuguese

Beginner

Work Experience

Frontend Developer at Futbolify

December 1, 2021 - January 1, 2024

Developed and maintained responsive user interfaces using React, TypeScript, Tailwind CSS, Apollo Client, and GraphQL for a platform serving 1,000–10,000 users. Collaborated within multidisciplinary Agile Scrum teams to deliver core features including social feeds, profiles, and chat functionality. Optimized application performance by improving video loading behavior and implementing caching strategies.

Full Stack Developer at Reservation Management Platform

March 1, 2024 - October 31, 2025

Developed a reservation management platform for a multi-location business serving 800+ customers per week. Built scalable user interfaces with React/TypeScript and robust backend services using NestJS and MongoDB. Implemented GraphQL schemas, JWT-based authentication, and CI/CD deployment pipelines on Vercel.