Hello, I'm
Errold Jay
Batay-an
I build secure, scalable, and high-performance applications using modern technologies. Passionate about system development, clean architecture, and user-focused solutions.
3+
Years Experience
10+
Projects Built
10+
Technologies
3+ Years
Professional Experience
Technical Skills
Technologies and tools I use to build scalable, modern applications — from frontend to cloud.
Languages & Frameworks
Frontend Technologies
Database Management
Mobile Development
Tools & Platforms
DevOps, Cloud & Others
Projects
Highlights of my best work — designing, developing, and deploying efficient systems with modern web technologies.
1 / 4Featured Work
HRIS (Human Resource Information System)
A Human Resource Information System for managing employee records, job postings, and organizational workflows with role-based access and secure data handling.
Piccatune
A mobile music & arts platform similar to TikTok and Spotify, where users create, share, and explore audio content. Powered by AWS and Firebase for real-time data and storage.
E-Commerce Platform
A full-featured online store with product management, cart, checkout, and order tracking. Integrated with payment gateway and admin dashboard for inventory control.
Real-Time Chat App
A real-time messaging application with private and group chat, online presence indicators, file sharing, and push notifications using WebSockets.
Church Management System
A web-based system for managing church members, ministries, events, and announcements. Features role-based access for administrators and ministry leaders.
Canteen Cashless Payment System
A cashless payment system for school canteens using RFID cards. Students can load credits and pay for meals by tapping their RFID card, with real-time transaction tracking and admin dashboard.
Inventory Management System
A web-based inventory tracking system with stock monitoring, supplier management, purchase orders, and automated low-stock alerts for warehouse operations.
Online Appointment Booking System
A scheduling platform that allows clients to book, reschedule, and cancel appointments online. Includes calendar management, email notifications, and a staff dashboard.
Barangay Information System
A community management system for barangay offices to handle resident records, certificate requests, blotter reports, and announcements with a digital document workflow.
School Enrollment System
An online enrollment platform for schools allowing students to enroll, select subjects, and pay fees digitally. Includes grade management and student record tracking for administrators.
Point of Sale (POS) System
A retail point-of-sale system with product catalog, barcode scanning support, receipt generation, sales reports, and cashier management for small to medium businesses.
Job Portal System
A full-featured job board where employers can post job listings and applicants can create profiles, upload resumes, and apply directly. Features application tracking and email notifications.
Fitness Tracker App
A mobile fitness app for logging workouts, tracking calories, and monitoring daily health goals. Features real-time sync across devices, push reminders, and progress charts powered by Firebase.
Food Delivery App
A mobile food ordering and delivery app where users browse restaurants, place orders, and track deliveries in real time. Includes Firebase-powered live order status updates and push notifications.
Social Events App
A community mobile app for discovering, creating, and RSVPing to local events. Features real-time attendee updates, in-app chat per event, and Firebase Authentication for secure sign-in.
Contact Me
Need a system or application for your business? Let's build a reliable and scalable solution together.