Student · Creative Developer

Hi, I'm Errico 👋

Welcome to my portfolio page, i am an active 6th semester student at Universitas Bina Sarana Informatika. I blend creative illustration with technical development — from character design to mobile apps and enterprise platforms.

✉ Email Me ⌥ GitHub in LinkedIn
Errico Bagus Rahmatullah
Background

Education & Skills

🎓 Education
S1 Sistem Informasi
Universitas Bina Sarana Informatika (UBSI)
2022 – Present · Semester 6
⚡ Skills
Creative
Character Illustration Clip Studio Paint
Mobile & Web
Flutter Dart Android PHP Laravel HTML/CSS
Platform & Tools
Microsoft Sharepoint Microsoft PowerAutomate Microsoft PowerApps
Career

Work Experience

2025 September - 2025 December
Intern Enterprise Software Developer
Star Energy Geothermal
Designed and built enterprise software for contract lifecycle monitoring at one of Indonesia's largest geothermal energy companies, using Microsoft Power Apps, SharePoint, and Power Automate.
Microsoft PowerApps Microsoft Sharepoint Microsoft Powerautomate
2020-present
Freelancer Character Illustrator
Independent
Custom character illustrations and fan art created for clients worldwide since 2020. From concept to finished digital art — built on Clip Studio Paint, shared and sold through Pixiv.
Clip Studio Paint Pixiv
Portfolio

Projects

📁
Live
Sigemas Backend
A full-featured admin dashboard built for a campus bootcamp competition. Manages users, data, donation simulation, and workflows in real time. Try it live → Email: SuperAdmin@gemas.com / Password: Admin1234!!
Laravel PHP CSS Javascript Cross-platform
⌥ Repo ↗ Demo
📁
Live
Sigemas Frontend (Android)
Cross-platform mobile frontend for Sigemas, built with Flutter. Smooth UI, real API integration, runs on any Android device. Download the APK or try it in your browser — no install needed.
Flutter dart android cross-platform
⌥ Repo ↗ Demo ↓ APK
📁
Wip
Brewcash Backend
A cashier management system built for a 2nd semester college project. Handles orders, products, and sales reports across multiple roles. Try it live → Email: owner@gmail.com / Password: Admin123!
Laravel PHP CSS Javascript cross-platform
⌥ Repo ↗ Demo
📁
Wip
Brewcash Frontend (Android)
The Flutter-powered cashier app that talks to Brewcash's backend. Scan, order, and checkout — all from your phone. Download APK or demo it in browser instantly.
Flutter Dart Android cross-platform
↗ Demo ↓ APK
📁
Wip
2023 Flood Data Analysis
Python data analysis on real 2023 flood disaster data in Indonesia. Uncovers patterns, visualizes impact, and draws insights from raw CSV datasets. Open in Google Colab and run it yourself.
Python Google Colab
⌥ Repo ↗ Demo
📁
Wip
Contract Reminder and Information Management System
Enterprise contract lifecycle monitoring system built during internship at Star Energy Geothermal. Source exported on GitHub, too late to document as subscription has expired and tied to the company. Sharepoint Lists: https://github.com/Erra-19/CRIMSSharepointList PowerAutomate Flows: https://github.com/Erra-19/CRIMSPowerAutomate
Microsoft PowerApps PowerAutomate Microsoft Sharepoint
⌥ Repo