Hi, I'm

Jerwin Teñajura.

I build web applications and custom systems that are reliable and easy to use. From full-stack web apps to business systems and UI/UX—I focus on clean code and clear interfaces.

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Get to know me

About

Passionate about turning ideas into working software.

I'm Jerwin Teñajura, a Full Stack Developer with experience in web and system development. I graduated from Saint Columban College (S.Y 2024–2025) with a degree in BS Information Technology.

I specialize in building custom web applications, business systems, and user-friendly interfaces. I deliver solutions for startups, government offices, and private clients. I focus on clean code, clear workflows, and reliable systems that fit how you work. From idea to launch, I help turn requirements into working software.

I enjoy solving real-world problems with code and am always learning new tools and best practices.

Education

  • 2024–2025
    BS Information Technology Saint Columban College
  • 2020–2021
    Senior High School Sibugay Technical Institute Inc.
  • 2013–2014
    Elementary Payag Elementary School
Selected Work

Projects

Web apps and systems I've built—deployed live and in development.

Deployed

Live projects you can visit online.

MNHS Attendance Monitoring System
School System

MNHS Attendance Monitoring System

QR-based check-in, automated reports, and DepEd-ready records for Midsalip National High School.

PHP MySQL JavaScript
CUATAS Ilimitado Corporation
Enterprise

CUATAS Ilimitado Corporation

ISP management system: customer management, billing, and network monitoring.

PHP MySQL JavaScript
Philippine People's Press
Publishing

Philippine People's Press

News platform with CMS, auth, and responsive design.

React Node.js MongoDB
Severs Construction
Website

Severs Construction

Company site with portfolio, client management, and inquiry system.

HTML CSS JavaScript
DPWH E-Logbook
Web App

DPWH E-Logbook

Digital logbook for attendance and activities with Firebase.

Firebase JavaScript
SSFO Admin System
Admin Portal

SSFO Admin System

Administrative portal for SSFO with document management.

Firebase React Material-UI

Developed (not deployed)

Projects built and ready—not yet live online.

Hotel Management System
Not deployed Management

Hotel Management System

Full hotel operations: reservations, check-in/out, billing, and room management.

PHP MySQL Bootstrap
DENR Tree Certification and Registration
Not deployed Government

DENR Tree Certification and Registration

Tree certification and registration system for DENR compliance and tracking.

PHP MySQL jQuery
Tambulig Blotter Management System
Not deployed Government

Tambulig Blotter Management System

Blotter and incident management for Tambulig LGU.

PHP JavaScript MySQL
Dental Management System
Not deployed Healthcare

Dental Management System

Patient records, appointments, and dental clinic operations.

PHP Tailwind MySQL
Event Attendance Management System
Not deployed Events

Event Attendance Management System

Event registration, check-in, and attendance tracking.

PHP Firebase JavaScript
Point of Sale System
Not deployed Retail

Point of Sale System

Sales, inventory, receipts, and reporting for retail operations.

JavaScript MySQL Bootstrap
Inventory System
Not deployed Business

Inventory System

Stock tracking, reorder alerts, and inventory reporting.

PHP MySQL Chart.js
DPWH PCMA
Not deployed Government

DPWH PCMA

Project and contract management for DPWH.

PHP React MySQL
Employee Management System
Not deployed Business

Employee Management System

Employee records, attendance, leave, and payroll management for organizations.

PHP MySQL Bootstrap
Career

Experience

Roles and responsibilities across internships, development, and administration.

December 2025 – Present

Software Engineer

CUATAS Ilimitado Corporation

  • Develop and maintain software solutions for the company and its clients.
  • Work with the team on design, implementation, and code reviews.
  • Write clear, maintainable code and fix bugs and technical issues.
  • Participate in testing and deploying new features and updates.
August 2025 – December 2025

Admin Assistant

Province of Zamboanga del Sur

  • Provided administrative support and assisted with daily office operations.
  • Organized and maintained files, records, and correspondence.
  • Coordinated schedules and assisted with day-to-day office tasks.
  • Prepared and managed documents and supported data entry and reporting.
January 2025 – April 2025

IT Support Intern

DPWH Zamboanga del Sur 1st DEO

  • Troubleshooted and maintained employees' PCs to ensure optimal performance.
  • Crimped LAN cables and connected them to employees' computers for network access.
  • Performed regular PC cleaning and basic hardware maintenance.
  • Installed and updated essential software, including printer drivers and utilities.
  • Provided technical support to staff for various IT-related issues.
November 2023 – January 2025

Full Stack Developer

Self-Employed

  • Developed custom systems and web applications for various clients, including e-commerce platforms, school projects, capstone projects, organizations, and office systems.
  • Integrated back-end and front-end functionalities, ensuring smooth data flow and a seamless user experience.
  • Utilized Firebase for real-time data handling and Hostinger for reliable hosting solutions.
  • Collaborated with clients to understand requirements and deliver tailored web solutions that align with business objectives.
  • Ensured responsive design and cross-browser compatibility for all projects.
August 2021 – December 2024

Volunteer (Admin Assistant)

Social Services Facilitator's Office (ZDS Provincial Government Office)

  • Created and processed payroll for scholarship applicants.
  • Managed and organized documents, data, and physical/digital files.
  • Provided basic technical support and troubleshooting assistance.
  • Assisted in maintaining office workflow and administrative operations.
Recognition

Achievements

Awards, certifications, and academic honors.

System Developer

Saint Columban College

December 05, 2024

Capstone Project Award | Awarded for outstanding contribution as the lead system developer for the capstone project.

Web Developer

Department of Trade & Industry

May 24, 2024

Certificate of Completion | Awarded in recognition of outstanding participation as a Web Developer at R&N Natural Products, in partnership with the Department of Trade & Industry (DTI), Saint Columban College (SCC), and the Chamber of Commerce and Industry Foundation, Inc. (CCIF).

BYTE President

College of Computing Studies

December 16, 2024

Leadership Award | Awarded for exemplary service as President of the BYTE Organization, a recognized school club organization, demonstrating strong leadership and commitment to the organization's success.

Dean's Lister

Saint Columban College

August 15, 2023

Academic Excellence Award | Consistently recognized as a Dean's Lister for 2 consecutive semesters with a general weighted average of 1.49 and with no grade below 2.0.

Certificate of Recognition

Sibugay Technical Institute Inc.

March 23, 2021

With Honor Award | Graduated with a General Weighted Average (GWA) of 91%, consistently recognized for academic honors throughout elementary, junior high, and senior high school, while maintaining a strong record of excellence.

Computer Literacy

Department of Education | ALS

October 01, 2017

Certificate of Completion | Awarded for the satisfactory completion of a basic computer literacy program, covering dBase III Plus, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, and Print Shop Deluxe III. Received the Golden Award for outstanding performance.

Credentials

Certificates

Gallery of certifications in IT and non-IT fields.

View all credentials on Google Drive

IT Field

Cert of Deployment
Github Cert
Internship Cert
System Acceptance Cert
System Developer Cert
Technical Cert
Technical Cert II
Technical Cert III
Technical Cert IV
Technical Cert V
Technical Cert VI
Web Developer Cert
Computer Literacy Cert

Non-IT Field

Carreer Pathing Cert
Jamboree Cert
Leadership Award
Mock Job Interview Cert
Workplace Etiquette Cert
What I offer

Services

Full-stack development, custom systems, and UI/UX—from idea to deployment.

Web Development

Responsive websites and web apps with modern frontend and backend. Clean, maintainable code.

Custom Systems

Business and office systems: billing, inventory, CRM, and internal tools tailored to your workflow.

UI/UX Design

User-friendly interfaces and flows. Wireframes and high-fidelity designs that convert.

Database Design

Schema design, queries, and integration with MySQL, Firebase, or your preferred stack.

API Integration

REST APIs, third-party integrations, and backend services for your app or system.

Maintenance & Support

Updates, bug fixes, and ongoing support so your project stays secure and running smoothly.

How I work

Process

Clear steps from brief to launch.

01

Discovery & Scope

Understand your goals, users, and requirements. We align on scope and timeline.

02

Design & Plan

Wireframes and UI design. You see structure and flow before development starts.

03

Build & Test

Development with clean code, regular check-ins, and testing for quality.

04

Launch & Handoff

Deploy, document, and hand over. Optional training and ongoing support.

What I work with

Stack & Clients

Technologies and sectors I deliver for.

I specialize in building custom web applications, business systems, and user-friendly interfaces. I work with the following to deliver solutions for startups, government offices, and private clients.

PHP JavaScript React Firebase MySQL

Delivering for startups, government offices, and private clients.

Kind words

Testimonials

What clients say about working with me.

“The system he built for us exceeded expectations. Clean, fast, and easy for the team to use. We’re very satisfied.”
CL
Client Private sector
“Professional from start to finish. Delivered on time and was responsive to feedback. Would hire again.”
GK
Client Startup
“Our office needed a custom solution. He understood our workflow and delivered a system we use every day.”
OF
Client Government office
Get in touch

Let’s Build Something

Have a project in mind? Tell me about your idea and timeline—I’ll get back within 24 hours.