Mark Angelo Doctolero
Full Stack Developer

Professional Summary
Bachelor of Science in Information Technology graduate from Cagayan State University with a strong foundation in full-stack web development, including frontend technologies, backend development, and database management. Detail-oriented and passionate about building responsive, user-friendly, and maintainable applications. Skilled in leveraging AI-powered development tools to improve productivity, streamline workflows, and support efficient software development.
Technical Skills
Frontend
React.js, Next.js, Angular, TypeScript, JavaScript (ES6+), Tailwind CSS, HTML5, CSS3, Responsive Design
Backend & Databases
Node.js, Python, Rust, Express.js, REST APIs, Authentication, PostgreSQL, MySQL, Supabase
DevOps & Tools
Git/GitHub, Docker, Linux, Cloudflare, Vercel, VS Code, NPM/Yarn
AI & Productivity
Prompt Engineering, LLM Integrations, ChatGPT, Claude, GitHub Copilot, Cursor, Trae IDE, Project IDX
Experience
IT Intern
2025 - 2026First Cagayan Converge Data Center, Inc.
- Assisted in data center operations and network infrastructure maintenance.
- Managed technical documentation and supported IT ticketing systems.
- Collaborated with the networking team to troubleshoot connectivity issues.
Full Stack Developer (Project-Based)
2024 - 2026Downstream Technologies
- Developed and maintained the DownStream POS System with inventory and sales management features.
- Built the BambooHub E-Commerce Platform for Tangkiran E-Mart with real-time inventory tracking and secure payment integration.
- Implemented technical solutions and optimized application performance across municipal and retail systems.
Projects
2024 - 2026Academic & Personal
- E-Attendance System: Developed a mobile and web-based attendance management system with real-time monitoring and reporting.
- Cagayan Valley Anglers Membership Platform: Created a membership management platform for a non-profit community organization.
- Internship Management System: Developed a web-based internship tracking and management system.
- Networking Utilities: Built SubnetTool Pro to improve network administration and productivity.
Education
Bachelor of Science in Information Technology and Computing Sciences
Cagayan State University – Gonzaga Campus
- Coursework focused on Web Development, Software Engineering, Networking, Database Systems, and AI Integration