AJ Castillo
Web Developer
About Me
I am a student web developer with two years of experience creating clean, responsive, and accessible websites. Currently, I am expanding my backend skills by learning Java, OOP, the Spring Framework, and GoF design patterns to build scalable applications. Motivated by Java’s demand in enterprise systems, I am committed to continuous learning and growth as a software developer.
Professional Focus
- Building responsive and user-friendly web applications
- Writing clean, maintainable code and learning modern web technologies
- Integrating AI into my workflow to speed up development and improve productivity
Skills
Frontend Development
HTML5, CSS3, JavaScript, TypeScript, Tailwind CSS, Bootstrap, ShadCN, Wordpress, Shopify
Frameworks & Libraries
React, React Native, Next.js, Express.js
AI & Automation
n8n, YoloAI, LLM Integration
Backend Development
Node.js, PHP, Flask, REST APIs
Databases
MySQL, PostgreSQL, MongoDB
Cloud & Deployment
Vercel, Render, Hostinger, Docker, Google Cloud Run
Development Tools
Git, GitHub, VS Code, Postman
Design & UI Tools
Figma, Photoshop, Canva
Experience
Frontend Developer Intern (Current Role)
Exakt, Inc.
Currently working as a developer intern in Exakt Inc, collaborating with designers to build CRM Website. Presently focused on front-end development while trying to gain exposure to full-stack responsibilities such as database management, UI/UX improvements, and backend development as part of ongoing training and future project assignments.
Key Achievements:
- Built the landing page for Exakt's Medical Easy Switch marketing campaign using WordPress and Elementor
- Modified a custom Shopify theme to highlight specific product collections on the homepage
- Assisted in data collection tasks using Python scripting
Web Developer Intern
Tech Executive Labs
Worked as a web developer intern in a startup environment, collaborating with designers and developers to build and deploy web applications.
Key Achievements:
- Led our group at Tech Executive Labs, guiding teammates on using GitHub and coordinating collaborative development tasks.
- Helped set up a shared development and deployment workflow using GitHub, Vercel, and Render
- Gained hands-on experience with frontend, backend, and system architecture in a startup setting
Full Stack Developer (Freelance)
Remote
Developed multiple academic and freelance projects including web applications, desktop applications, and scalable backend systems. Focused on practical solutions tailored for student and small-scale use cases.
Key Achievements:
- Built PHP and JavaScript-based web applications with scalable and modular backends
- Deployed projects on Hostinger and lightweight VPS alternatives to reduce hosting costs
- Used AI-assisted tools to improve development speed, code quality, and delivery efficiency
Projects
AI-powered web and mobile application for detecting common skin conditions using computer vision.
A route-generation, tracking, and gamified platform for runners and cyclists.
A smart landing page integrated with n8n automation and Gemini AI for automated inquiry handling.
Education
Bachelor of Science in Information Technology
Batangas State University – TNEU Lipa Campus
Pursuing a Bachelor’s degree in Information Technology with a major in Network Technology. Gained strong foundations in programming, system design, networking concepts, and real-world software development through academic projects, competitions, and leadership roles.
Key Achievements:
- Dean’s Lister for academic excellence
- 1st Place – CICS Week Coding Competition (2024)
- 3rd Place – CICS Week Coding Competition (2023)
- Led and contributed to multiple capstone and academic projects, applying full-stack development and system architecture concepts
Certificates
