Van Kal'z
Van Kirk Lumantas portrait

Van Kirk Lumantas

Full Stack Developer

Hi, I'm Van Kirk Lumantas, a passionate developer with expertise in modern web technologies.

I enjoy creating beautiful, functional, and user-friendly applications that solve real-world problems.

When I'm not coding, you can find me exploring new technologies, diving into new frameworks, or enhancing my skills with the latest tech stacks.

Projects

Here are some of the projects I've worked on throughout my career

Employee Attrition Analysis & Prediction

Employee Attrition Analysis & Prediction

Sep 2025
This study presents a detailed data analysis focused on predicting employee attrition by applying the Random Forest algorithm, which was formally defended during the KOICA ICT training program.
PythonJupyterKaggle
Collaborators:
Kent Spencer Medez
Bona Ruth Barol
Jean Mar Tuanda
View on Google Colab
Batoda API

Batoda API

May 2025
A pure backend api system for Batoda, designed to handle backend operations for batoda app and web.
LaravelMySQLDocker
Collaborator:
Orlie Wayne Faustorilla
View on GitHub
Batoda Socket.IO Server

Batoda Socket.IO Server

May 2025
A real-time communication server used by both Batoda API and Mobile App for instant updates and notifications.
Node.jsExpressJavaScriptSocket.IO
Collaborator:
Charles Tamayo
View on GitHub
Batoda Mobile App

Batoda Mobile App

May 2025
The mobile application version of Batoda, providing a smooth experience for passengers on the go.
React NativeTypeScript
Solo project
View on GitHub
Batoda Web Platform

Batoda Web Platform

May 2025
The web platform for Batoda, offering a comprehensive interface for users (client) to access services through their browsers.
Next.jsTypeScriptTailwindCSS
Solo project
View on GitHub
Candauay Management System

Candauay Management System

Dec 2024
A Management System for Barangay Candauay, Dumaguete City, designed to handle local administrative tasks.
LaravelMySQLBladeBootstrap 5JavaScript
Collaborator:
Rex Clint Patajo
View on GitHub

Skills

Technologies and tools I work with to bring ideas to life.

Frontend

React
Next.js
TypeScript
JavaScript
HTML5
CSS3
React Native
Tailwind CSS

Backend

Node.js
Laravel
PHP
RESTful APIs
AdonisJS

Data Analytics

Python
Pandas
NumPy
Matplotlib
Seaborn
Jupyter Notebook
Scikit-Learn

Database

PostgreSQL
MySQL
SQLite
Firebase
Supabase

Tools & Others

Git
Docker
Vercel
Socket
Figma
Postman
Render

Experience

IT Instructor

Metro Dumaguete College Inc.
December 2025 - Present

Responsibilities

  • Instruct students focusing in the fundamentals of programming languages using Java
  • Develop curriculum and lesson plans to enhance students' understanding of programming concepts.

Freelance Web Developer

Self-Employed
September 2025 - Present

Responsibilities

  • Developed and maintained websites for small businesses using modern web technologies.
  • Collaborated with clients to gather requirements and deliver customized web solutions.
  • Implemented responsive design principles to ensure optimal user experience across devices.

Web Developer

Bluebeans Systems
July 2024 - December 2024

Responsibilities

  • Led a team in developing and testing admin portal APIs and server endpoints.
  • Utilized Bitbucket for version control and collaborative development.
  • Designed and developed the UI for The Green Table admin portal, improving clarity and usability.
  • Built and tested REST API endpoints to support admin portal functionality with team collaboration.

Achievements

Certificates, workshops, and other achievements that showcase my continuous learning journey

Code Connect Workshop certificate
CertificationWorkshop

Code Connect Workshop

Issued by:Information Technology Society, The Idealists' Guild, and the Computer Science Organization at Negros Oriental State University - Main Campus
September 25, 2025 & October 27, 2025

Taught 2nd-year IT/CS students Introduction to DBMS through lectures and hands-on training.

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Data Visualization Workshop certificate
CertificationWorkshop

Data Visualization Workshop

Issued by:Zuitt Coding Bootcamp
September 17, 2025

Completed the Free Coding Bootcamp: Data Visualization Workshop by Zuitt (Sept 17, 2024), gaining hands-on experience in transforming datasets into insights using JavaScript, Bootstrap 5, HTML5, CSS3, RapidAPI, and Chart.js.

View Full Certificates

Hour of Code: Learn AI and Coding in a Fun and Engaging Way certificate
Certification

Hour of Code: Learn AI and Coding in a Fun and Engaging Way

Issued by:Department of Information and Communications Technology (DICT)
September 11, 2025

Participated in the 'Hour of Code: Learn AI and Coding' workshop hosted by the DICT Cordillera Administrative Region on September 11, 2024. This 1.5-hour session covered AI and coding fundamentals in a fun, engaging format and included recognition for enthusiastic participation and commitment to learning.

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AI-Powered Future: Mastering Prompt Engineering in Generative AI certificate
CertificationWorkshop

AI-Powered Future: Mastering Prompt Engineering in Generative AI

Issued by:Department of Information and Communication Technology
September 6, 2025

Attended in the INFO SESSION on 'AI-Powered Future: Mastering Prompt Engineering in Generative AI' via ZOOM call. We used Humanizer and AIPRM for ChatGPT.

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Contact Center Services NC II certificate
Certification

Contact Center Services NC II

Issued by:Technical Educational Vocational Entrepreneurial Center - Silliman University
September 5, 2025

Completed the requirements for Contact Center Services NC II (144 Hours) as part of the KOICA Digital Transformation program. This TESDA-approved certification adds important customer service and communication skills, which support the use of technology in workplaces.

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KOICA Best Presenter certificate
Award

KOICA Best Presenter

Issued by:KOICA Digital Transformation Center - Hannam University & Silliman University
September 5, 2025

Given recognition as the best presenter in the KOICA AI & Big Data Analytics Training program. This award was for showing clear and confident presentation skills in explaining the lessons learned during the training.

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AI & Big Data Analytics Training certificate
WorkshopCertification

AI & Big Data Analytics Training

Issued by:KOICA Digital Transformation Center - Hannam University & Silliman University
August 4-29, 2025

Finished a 100-hour, 20-day hands-on training on Artificial Intelligence and basic Big Data Management. The training included Python programming, data science basics, machine learning, and data analytics using modern tools. It ended with a mini project, which was chosen as the best among the class.

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Contact Center Services NC II - Certificate of Training certificate
Certification

Contact Center Services NC II - Certificate of Training

Issued by:Technical Education and Skills Development Authority (TESDA) & Silliman University
August 29, 2025

Successfully completed the competency requirements of Contact Center Services NC II training program. This TESDA certificate validates the completion of 144 hours of comprehensive training in customer service delivery, workplace communication, and technical skills required for contact center operations.

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Get In Touch

I'm always open to discussing new opportunities, interesting projects, or just having a chat about technology.

Let's Connect

Looking for a developer for your next project? I'm currently available for freelance work and open to discussing full-time opportunities.