Open to opportunities

Guillermo Guerra

@guillermoguerra

Message

Junior full-stack developer building production React and Python web/mobile apps.

Portugal

Message

What I'm looking for

I’m looking for remote, agile/SCRUM teams where I can build and ship production web and mobile apps with React/Next.js and Python, continue strengthening TypeScript, and own full-stack features with API integration.

I’m a junior full-stack developer with hands-on experience building and shipping production web and mobile applications. I’ve built and published a mobile app (iOS & Android) on the App Store and Google Play, and I’ve delivered full-stack inventory dashboards with React / React Native and backend/API integration.

I’m solid in JavaScript, React, Next.js and Python, and I’m currently strengthening TypeScript. Coming from a technical-support background, I’m comfortable troubleshooting and solving problems quickly, and I enjoy working in remote, agile (SCRUM) teams.

In my recent roles at GST3D, I developed and deployed production features end-to-end: e-commerce sites (Shopify, WooCommerce), inventory dashboards, and API integrations, plus React/Next.js marketplace work. I’m motivated to keep growing as a developer while continuing to deliver reliable, customer-ready products.

Experience

Work history, roles, and key accomplishments

Current

Developer - App & Systems

Current

GST3D

Oct 2025 - Present (10 months)

Developed and deployed the GST3D mobile app for iOS and Android, publishing it on Google Play and the App Store. Built the gst3d.eu website and a full-stack inventory management dashboard with backend integration, including API integrations and custom JavaScript functionality for e-commerce platforms.

React Native JavaScript Backend Integrations API Integration Full Stack

Developer & Administrative Manager

GST3D

Apr 2025 - Sep 2025 (5 months)

Developed and maintained GST3D e-commerce websites using WooCommerce and Shopify, including custom JavaScript and front-end enhancements. Built an inventory dashboard with React/React Native and coordinated order processing across web, Amazon, and live channels.

WooCommerce Shopify JavaScript React React Native Order Processing Amazon

T2 Technical Support Agent

Webhelp - Concentrix

Sep 2022 - May 2025 (2 years 8 months)

Troubleshot and resolved complex technical issues across computers, TVs, smartphones, and tablets. Managed cases in Salesforce and collaborated via Microsoft Teams.

Technical Support Troubleshooting Salesforce Microsoft Teams

Junior Programmer (JS/React/Next.js)

GST3D

Nov 2023 - Feb 2024 (3 months)

Revamped the GST3D.club marketplace using React, Next.js, and JavaScript. Implemented HTTPS, tested APIs with Postman, managed version control with GitHub, and worked in a SCRUM environment with Jira and Slack while providing multilingual support via live chat.