Matthew Guillén
Frontend Engineer & Product Developer
I build pixel-perfect digital experiences, startups apps for sick founders, and tools for leading companies. Let's chat.
Projects where I led
Top Designer in Figma
Over 30k open source downloads speak for me on Figma
Index Fun
One of the top 10 most revolutionary web3 project in Asia according to Crypyo Banter magazine, leading the frontend app and design
Hoosling
At 16, I built Hoosling—a crypto fundraiser that got $60-80K in proposals and caught the eye of Open English’s VP (my mentor). It failed, but I learned tons.
Gesmia - iOS Security App
Family app: share your location with friends & family, report incidents, and view maps of safe & dangerous areas.
My experience since I was 16 years old
Designer & Product Developer at Holdex
Designed, developed, and reviewed code as part of a high-performance web3 team for Index.Fun, Truflation, Clearpool Protocol and Ozean
Frontend Developer at Nitel
Developed internal tools using Angular and SCSS. Integrated Salesforce for process automation and real-time reporting.
Designer & Mobile Engineer at Gesmia
Led the App design and developed an iOS/Android integrating an API built in C# for realtime information provided by the Backend team.
Frontend Developer & Full-Stack at Golabs Tech
Development of more than 5 projects, including a web app for influencers used by L'Oréal Paris, a .NET API for electric chargers and a coin exchange features for mobile and web app.
Figma Design Community Contributor
Achieved +30,000 Figma Interfaces Downloads Milestone through open-source contributions.
Co-Founder at Hoosling & Front-End Engineer
Developed a crowdfunding platform with React and PHP, achieving $2K MRR, handling UI/UX, frontend development, and usability testing with Hotjar and Figma.
Web3 Costa Rica Site
Designed and developed the community website for Web3 Costa Rica at my 17 years old.
Freelance
Working through freelance projects at 16 years old, including Cavernas Del Venado Expedition, an Shopping center in Quito, Ecuador and some hotels in Costa Rica
4 minutes
¿Levantar inversión con criptomonedas, futurista o una estupidez?
3 minutes
¿Cómo un niño de 16 años crea una app para suprimir la depresión de los profesores?