I'm a passionate full-stack developer with 5 years of experience in the full software development life cycle. I design and build scalable web applications with modern frontend and backend technologies. I'm proficient in backend technologies (PHP/Laravel, Node.js/Express.js, Python), with a focus on RESTful APIs and testing (PHPUnit), and frontend frameworks (React.js, Vue.js, Tailwind CSS). I have experience with databases (MySQL, Oracle, PostgreSQL) and DevOps tools like Git, Docker, and CI/CD. I also work with Power BI and hold a C1 English proficiency, and I aim to provide technical leadership and innovative solutions.

William Villegas

I'm a passionate full-stack developer with 5 years of experience in the full software development life cycle. I design and build scalable web applications with modern frontend and backend technologies. I'm proficient in backend technologies (PHP/Laravel, Node.js/Express.js, Python), with a focus on RESTful APIs and testing (PHPUnit), and frontend frameworks (React.js, Vue.js, Tailwind CSS). I have experience with databases (MySQL, Oracle, PostgreSQL) and DevOps tools like Git, Docker, and CI/CD. I also work with Power BI and hold a C1 English proficiency, and I aim to provide technical leadership and innovative solutions.

Available to hire

I’m a passionate full-stack developer with 5 years of experience in the full software development life cycle. I design and build scalable web applications with modern frontend and backend technologies.

I’m proficient in backend technologies (PHP/Laravel, Node.js/Express.js, Python), with a focus on RESTful APIs and testing (PHPUnit), and frontend frameworks (React.js, Vue.js, Tailwind CSS). I have experience with databases (MySQL, Oracle, PostgreSQL) and DevOps tools like Git, Docker, and CI/CD. I also work with Power BI and hold a C1 English proficiency, and I aim to provide technical leadership and innovative solutions.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Language

Spanish; Castilian
Fluent
English
Fluent

Work Experience

Full-Stack Developer at IVSS Citizens Application
October 1, 2023 - Present
Full-stack development for the Citizens-IVSS Application using React.js + Tailwind CSS / Laravel 10 + Oracle + Apache; optimized management of citizen records. Results: 70% less time in queries and 60% faster data registration/update. Scalable API with data protection and an intuitive interface for handling sensitive information.
Full-Stack Developer at IVSS Medical Leave System
October 1, 2023 - Present
Platform (Laravel 10 + Oracle + Apache) to automate the registration of medical leaves and the calculation of indemnities in health care centers. Key features: complete CRUD (users, pathologies, specialties, centers) and integrated workflows.
Full-Stack Developer at IVSS Direct Payment Gateway
October 1, 2023 - Present
Full-stack financial solution (React.js + Tailwind CSS / Laravel 10 API + Oracle + Apache) for automated consultation and settlement of pension debts. Implementation: RESTful API with Sanctum/JWT, a responsive interface, and generation of PDF payment reports.
Web Designer and Administrator at R Climatal | Revista de Climatología, Caracas
April 30, 2023 - October 16, 2025
Responsible for comprehensive management, maintenance, and design of the corporate website, developed in WordPress. Tasks included platform updates, UX improvements, and ensuring security and optimal performance.
Web Designer & Administrator at IVSS
April 30, 2023 - October 16, 2025
Responsible for the comprehensive management, maintenance, and design of the corporate website R Climatología (Caracas, Venezuela). Performed platform updates, UX customization, and ensured security and performance.
Full-Stack Developer at IVSS
October 1, 2023 - Present
Full-stack development across IVSS projects using React.js + Tailwind CSS for frontend and Laravel 10 API + Oracle + Apache for backend. Built scalable RESTful APIs with data protection and an intuitive UI. Projects included: (1) Citizens IVSS application reducing queries by 70% and data registrations by 60%; (2) Medical Leave System automating registrations and indemnity calculations with CRUD and integrated workflows; (3) Direct Payment Gateway with JWT/Sanctum secured REST API and PDF reports.
Full-stack Developer at IVSS
October 1, 2023 - November 12, 2025
Full-stack development for the Citizens-IVSS Application using React.js + Tailwind CSS and Laravel 10 with Oracle and Apache, optimizing citizen records management. Achievements include 70% reduction in queries and 60% faster data registration/update, plus a scalable API with data protection and an intuitive UI for handling sensitive information. Also delivered the IVSS Medical Leave System to automate medical leave registrations and indemnity calculations (CRUD for users, pathologies, specialties, centers, integrated workflows), and the IVSS Direct Payment Gateway for automated pension debt consultations and settlements, featuring a RESTful API with Sanctum/JWT, responsive UI, and PDF payment reports.
Web Designer and Administrator at R Climatal
April 1, 2023 - April 1, 2023
Responsible for comprehensive management, maintenance, and design of the corporate website R Climatal.eu, developed in WordPress. Tasks included ongoing platform updates, UX improvements, security hardening, and ensuring optimal performance.
Full-Stack Developer at IVSS (Instituto Venezolano de Seguridad Social)
October 1, 2023 - November 12, 2025
Full-stack development for IVSS including three major initiatives: Citizens-IVSS Application (React.js + Tailwind CSS frontend; Laravel 10 API with Oracle + Apache backend) improving citizen record management with ~70% reduction in query times and ~60% faster data registration/updates; Medical Leave System (Laravel 10 + Oracle + Apache) to automate medical leaves and indemnity calculations with CRUD for users, pathologies, specialties, centers and integrated workflows; Direct Payment Gateway (React.js + Tailwind CSS + Laravel 10 API + Oracle + Apache) for pension debt settlements, featuring a RESTful API with Sanctum/JWT, a responsive UI, and PDF payment reports.
Web Designer and Administrator at R Climatal - Revista de Climatología
April 1, 2023 - April 1, 2023
Responsible for comprehensive management, maintenance, and design of the corporate website, developed in WordPress. Tasks included constant platform updates, design customization to improve UX, and ensuring the site's security and performance.

Education

Associate's Degree in Computer Science at Instituto Universitario de Mercadotecnia (ISUM)
January 11, 2030 - November 12, 2025

Qualifications

Associate's Degree in Computer Science
January 11, 2030 - October 16, 2025
EF SET Certificate
January 11, 2030 - October 16, 2025
Power BI Course
January 11, 2030 - October 16, 2025
Python Course
January 11, 2030 - October 16, 2025
Advanced Docker Course
January 11, 2030 - October 16, 2025
Professional Git and GitHub Course
January 11, 2030 - October 16, 2025
Associate Degree in Computer Science
January 11, 2030 - October 16, 2025
EF SET Certificate
January 11, 2030 - October 16, 2025
Power BI Course
January 11, 2030 - October 16, 2025
Python Course
January 11, 2030 - October 16, 2025
Laravel Application Development with TDD Course
January 11, 2030 - October 16, 2025
REST API with Laravel Course
January 11, 2030 - October 16, 2025
SPA in Laravel with Inertia and Vue.js Course
January 11, 2030 - October 16, 2025
React.js Course
January 11, 2030 - October 16, 2025
Advanced Docker Course
January 11, 2030 - October 16, 2025
Professional Git and GitHub Course
January 11, 2030 - October 16, 2025
Associate's Degree in Computer Science
January 11, 2030 - November 12, 2025
EF SET Certificate
January 11, 2030 - November 12, 2025
Power BI Course
January 11, 2030 - November 12, 2025
Python Course
January 11, 2030 - November 12, 2025
Professional Git and GitHub Course
January 11, 2030 - November 12, 2025
Advanced Docker Course
January 11, 2030 - November 12, 2025
EF SET Certificate
January 11, 2030 - November 12, 2025
Power BI Course
January 11, 2030 - November 12, 2025
Python Course
January 11, 2030 - November 12, 2025
Laravel Application Development with TDD Course
January 11, 2030 - November 12, 2025
REST API with Laravel Course
January 11, 2030 - November 12, 2025
SPA in Laravel with Inertia and Vue.js Course
January 11, 2030 - November 12, 2025
React.js Course
January 11, 2030 - November 12, 2025
MySQL and MariaDB Course
January 11, 2030 - November 12, 2025
PostgreSQL Course
January 11, 2030 - November 12, 2025
Tailwind CSS Course
January 11, 2030 - November 12, 2025
JavaScript University – From Zero to Expert in JavaScript!
January 11, 2030 - November 12, 2025
Advanced Node.js Course
January 11, 2030 - November 12, 2025
Backend Development with Express.js Course
January 11, 2030 - November 12, 2025
Professional Git and GitHub Course
January 11, 2030 - November 12, 2025
Advanced Docker Course
January 11, 2030 - November 12, 2025

Industry Experience

Software & Internet, Media & Entertainment, Professional Services, Government, Healthcare, Education