Senior Fullstack Developer with 9+ years shipping products end to end. I work hands-on with modern AI tools — Claude, Antigravity, Grok — to build assistants and AI-powered features inside real products, not demos.
I build and own the full stack: PHP/Laravel backends, Vue.js/React frontends, and WordPress at scale. I also design what keeps products reliable in production — APIs, Stripe billing and subscriptions, data models, and performance work that holds up under real use.
I'm bilingual (Spanish & English) and have worked with clients and companies in Colombia, Spain, and the United States. Based in Bucaramanga, Colombia. Open to remote roles, consulting, and partnerships.
- Applied AI — integrating Claude, Antigravity, Grok and other LLM tooling into existing apps and workflows
- Solid backend craft — secure APIs, payments, and architecture you can maintain
- Modernization — legacy → PHP 8.x, cleaner systems, deploy pipelines that keep shipping
- Frontends that feel fast — dashboards, search, and UX for complex tools
Worked across healthcare, SaaS, and product teams where clear communication and ownership matter as much as the code.
Drove technical evolution and modernization of visbl's core platform:
- Led end-to-end upgrade of legacy systems to PHP 8.x standards
- Overhauled subscription/payment engine with the latest Stripe SDK
- Helped improve the lender search and onboarding system
- Developed custom web apps using PHP (vanilla & WordPress), MySQL, and React.
- Created WordPress themes and plugins for international clients.
- Ensured fast performance and responsiveness across various devices and platforms.
- Built RESTful APIs with Laravel, handled migrations, and optimized database queries.
- Conducted unit and integration testing (TDD), and managed backend performance.
- Focused on maintainability and scalability of products.
- Designed data pipelines using SQL Server, Oracle DB, and JDE Edwards.
- Created robust stored procedures and automated reporting solutions.
Languages & Frameworks:
PHP, Laravel, FastAPI, JavaScript, Vue.js, React, Alpine.js, jQuery, Symfony
Databases:
MySQL, PostgreSQL, SQL Server, MariaDB, Oracle
Frontend:
Bootstrap, Vuetify, Tailwind CSS, BootstrapVue
CMS & eCommerce:
WordPress (security auditing, REST API), Shopify, WooCommerce, Stripe billing/subscriptions
Tools & Other Skills:
Git, REST APIs, Docker, GCP, AWS, Filament v3, Agile/Scrum, Data Integration, Debugging, Testing (TDD)
AI-assisted development:
Claude, Codex, Antigravity, Grok
📄 View My Resume (PDF)
📧 oscarxxi@gmail.com
🔗 LinkedIn - Oscar Javier Muñoz Marciales
🌐 Portfolio - artechsano.com
💻 GitHub - @oscarmmi
📊 My GitHub Stats](https://github.com/oscarmmi/github-readme-stats)
🏆 Top Languages](https://github.com/oscarmmi/github-readme-stats)