Luis Carrera
Fullstack Web Developer | Frontend & Backend | WordPress, Shopify & AI
Summary
Fullstack Web Developer with over 6 years of experience in the complete development cycle of web applications, e-commerce and artificial intelligence integrations. I led the creation of the Lalico.com e-commerce achieving a 70% improvement in UX/UI, optimized WordPress sites reducing load times by 65% and decreased operational costs by 40% through serverless functions on Firebase/GCP. I currently integrate AI solutions (Claude, OpenAI, n8n) to automate business processes. I have delivered over 50 projects for clients in Guatemala, Central America and the United States.
Professional Experience
Software Developer
Business View S.A. – United States (Remote)
June 2022 – June 2025
- Led the creation from scratch of Lalico.com, a Shopify e-commerce with custom integrations via Firebase and Google Cloud APIs, achieving a 70% improvement in user experience (UX/UI).
- Optimized the loading speed of multiple WordPress sites with PHP, reducing response times by over 65% through caching, lazy loading and asset optimization.
- Designed and executed the refactoring of a Firebase application with JavaScript/Node.js, migrating Cloud Functions and restructuring Firestore queries, reducing operational costs by 40%.
- Implemented Web Application Firewalls (WAF) with Cloudflare, SSL/TLS certificates and security policies that eliminated vulnerability incidents.
- Developed from scratch a building and condominium management platform with PHP, MySQL, JavaScript and Bootstrap that unified the operation of multiple properties.
Web Developer
Llaves de mi tierra – Guatemala
September 2022 – January 2024
- Developed an internal client management platform with React, PHP and MySQL that unified prospect information and optimized the sales pipeline.
- Created an intelligent AI chatbot for WhatsApp using Node.js, Express and the OpenAI API, automating prospect qualification and reducing response time from hours to seconds.
- Integrated Google and Facebook REST APIs to synchronize marketing data, and trained the sales team, contributing to an increase in contract closings.
Peacekeeper & IT Support
United Nations (UN | MONUSCO) – Democratic Republic of the Congo
July 2020 – July 2021
- Managed IT infrastructure for 150 personnel: hardware, software, network maintenance and technical incident resolution in operations zone.
- Produced official audiovisual content (photography and video) to document mission operations, distributed on MONUSCO institutional channels.
Featured Projects
Complete online store with inventory integrations, payment gateways and conversion optimization. +70% UX/UI improvement.
Web platform for real estate company with property catalog, contact forms and SEO optimization.
AI WhatsApp Chatbot
– OpenAI AutomationProspect qualification bot for WhatsApp Business using Node.js, Express and OpenAI API.
Technical Skills
Education
Bachiller en Computación con Orientación Comercial
Liceo en Computación Rotterdam – Guatemala
2013 – 2015
Continuous learning: Platzi – Software Developer (2019-Actualidad) | FreeCodeCamp – Web Development (2021-2023) | Udemy – Full Stack Development (2020-2021)
Languages
Spanish: Native•English: Intermediate (technical reading and professional communication)
Interested in working together? Write me