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
Technologies I’ve Tried
Frontend Development
HTML5, CSS3, JavaScript, TypeScript, Tailwind CSS, Bootstrap, ShadCN
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
UI/UX Tools & CMS
Figma, Photoshop, Canva, Wordpress, Shopify
Experience
Developer Intern
Exakt, Inc.
Completed a pre-graduation internship at Exakt, Inc., where I collaborated with designers and developers in building web-based systems and applications. Gained hands-on experience in both frontend and backend development while contributing to real-world projects.
Role
Frontend Developer Intern (TechWave) — Developed and customized web pages using WordPress and Shopify for marketing and e-commerce initiatives
Current RoleWeb Developer Intern (Exakt IT) — Contributed to internal system development (DMS) using Spring Boot and React
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.
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.
Projects
AI-powered web and mobile application for detecting common skin conditions using computer vision.
Freelance-built capstone e-commerce platform with delivery management system.
Resort booking system with chat, ratings, comments, and admin customer management.
A role-based learning management system similar to Google Classroom for managing courses, classrooms, and academic schedules.
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
