Mat Jerico Sergio
Web Development Engineer based in Bacoor, Cavite, PH. I build internal web systems and lead application initiatives primarily with PHP (CodeIgniter/Laravel), MySQL, and pragmatic front-end stacks while adopting Next.js/React for new work.
Experience
St. Dominic College of Asia — Management Information System Head
Full-time · On-site · Bacoor, Calabarzon, Philippines
Aug 2024 – Present · 1 yr 6 mos
- Lead MIS operations and application development; own roadmaps and stakeholder alignment.
- Oversee PHP/CodeIgniter platforms, Web Services APIs, and OOP best practices.
- Drive Agile project management and process improvements (Six Sigma).
Skills: PHP · CodeIgniter · VB.NET · Web Services API · OOP · Agile PM · Six Sigma
St. Dominic College of Asia — System Analyst (concurrent)
Full-time · On-site
Aug 2024 – Present · 1 yr 6 mos
- Program and software system analysis for departmental tools and integrations.
- Translate business needs into clear technical specs and acceptance criteria.
Skills: Program Analysis · Software System Analysis
Business Development Application Lead
Full-time · On-site
Feb 2024 – Aug 2024 · 0 yr 6 mos
Led cross-functional web development using the PHP MVC stack; translated business requirements into scalable solutions for school administrative systems.
- Designed & implemented apps improving efficiency and UX for students, instructors, and staff.
- Owned end-to-end lifecycles; met deadlines while upholding QA and security.
- Maintained & optimized CodeIgniter (CI3) systems; reduced downtime and risk.
Skills: PHP · CodeIgniter · MySQL · Git · Project Management · Data Analysis · Agile PM · Six Sigma
Web Developer Engineer
Contract · On-site
Aug 2023 – Feb 2024 · 7 mos
- Developed responsive MVC web apps with PHP/CodeIgniter, MySQL, HTML/CSS, JavaScript.
- Version control and collaboration with Git; ensured content and UX quality.
Skills: PHP · CodeIgniter · MySQL · HTML · CSS · JavaScript · Responsive Web Design · Git · MVC
Web Development Intern
Apprenticeship
Jul 2022 – Jul 2023 · 1 yr 1 mo
Built a web-based property management catalogue for the Property Management Office to streamline material requisition across departments; continued maintaining and improving SDCA web systems.
- Applied web dev/maintenance skills in a live environment (security, performance, reliability).
- Hands-on with data management, networking, and information security fundamentals.
Skills: PHP · CodeIgniter · MySQL · HTML · CSS · JavaScript · Git/GitHub · Web Content
Total Experience Length
- 3 yrs 6 mos
Skills
- PHP
- CodeIgniter (CI3)
- Laravel
- MySQL
- JavaScript
- HTML/CSS
- Responsive Web Design
- Git/GitHub
- Web Services API
- OOP
- Agile Project Management
- Six Sigma
- VB.NET
- System Analysis
- Next.js/React
Latest posts & projects
Dominican Forge: Building an LLM Prompt Engineering Challenge Platform
January 30, 2026
Built an interactive AI experiential platform for "How to Train Your AI," an ICT Department exhibit celebrating St. Dominic College of Asia''s 22nd Founding Anniversary. Created in just 6 weeks (October–November 2025), this gamified platform let 500+ Dominicans experience the power of AI technology firsthand through competitive prompt engineering challenges. Built with CodeIgniter 3 and Google Gemini API, featuring dual AI evaluation, real-time leaderboards, and security systems.
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What I Build & Where I’m Headed
August 27, 2025
Currently diving into React/JS and standardizing on Next.js (no shipped Next.js projects yet). Most deliveries are CodeIgniter 3 systems using Bootstrap, jQuery, Chart.js, and MySQL. Core maintainer of WEBDOSE (SIS for HE/GS/SoM), Canvas CSV integration, RFID turnstiles, queuing, property/inventory, and attendance—serving registrar, admissions, program chairs/deans, and students.
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