hello, i'm

Sadewa Tedja

Informatics Engineering Student

student builder tinkerer

open to internships ✦ full-stack & security ✦ based in yogyakarta ✦ open to internships ✦ full-stack & security ✦ based in yogyakarta ✦ open to internships ✦ full-stack & security ✦ based in yogyakarta ✦ open to internships ✦ full-stack & security ✦ based in yogyakarta ✦ open to internships ✦ full-stack & security ✦ based in yogyakarta ✦ open to internships ✦ full-stack & security ✦ based in yogyakarta ✦ open to internships ✦ full-stack & security ✦ based in yogyakarta ✦ open to internships ✦ full-stack & security ✦ based in yogyakarta ✦

// about

a little about me

I'm an Informatics Engineering student at UPN Veteran Yogyakarta with a deep interest in building things that matter — from security-focused desktop apps to automated bots serving dozens of users.

My work spans full-stack development, IoT systems, and security-focused tooling. I enjoy tackling hard problems, especially at the intersection of security, AI, and practical apps.

sadewa.status

5+ projects shipped

39+ active users served

2 years building

status: still hungry for more

// education

where i learned

Bachelor of Informatics Engineering (S1)

2023 — 2027

UPN Veteran Yogyakarta

basis data jaringan komputer pemrograman web pbo data science iot kriptografi cloud computing

// projects

quest log

Questify ↗

2026 — now

flutterdartfastapigemini ai

Life-RPG & goal tracker that turns daily tasks into quests, with its own landing page.

Quest-based task system with XP, streaks, and life-game mechanics
FastAPI backend, receipt scanning via Gemini Vision API

CipherDrop ↗

2025

pythonpyside6aes-256-gcmchacha20fastapi

Standalone E2EE desktop messaging and file sharing app for Windows with image steganography support.

AES-256-GCM file encryption, Vigenere+ChaCha20 hybrid messaging, Argon2id key derivation
Windows Hello biometric unlock integration
Self-hostable FastAPI backend with JWT auth and ephemeral/TTL messages

SPADA Attendance Bot ↗

2024 — now

pythonplaywrighttelegramdiscord

Submits your attendance for you when you forget — on UPN's Moodle-based LMS (SPADA), with a ping on Telegram and Discord once it's handled.

Telegram and Discord notification systems for real-time alerts
Scaled to serve 39+ active users

Tracktard ↗

2024 — 2025

react nativeexpotypescriptfirebaseiot

Full-stack IoT monitoring app with React Native frontend and custom IoT backend for real-time sensor data tracking.

Modular TypeScript component architecture with Firebase integration
Offline handling and PWA support

Expense Tracker App

2024

fluttersqlitegemini vision api

Cross-platform offline-first expense tracker with receipt scanning via Gemini Vision API.

Local data persistence with SQLite
State management via Provider

Full-Stack Notes App

2024

vanilla jsexpress.jsmysqlgcp

Full-stack notes application with REST API backend deployed on Google Cloud Platform.

Authentication and CRUD operations
Cloud VM deployment on GCP

// skills

my toolbox

languages

python dart javascript typescript bash

frameworks

flutter react native expo flask express.js fastapi playwright

databases

mysql sqlite firebase

cloud & devops

google cloud platform linux ssh

security

aes-256-gcm chacha20-poly1305 argon2id jwt

tools

git vs code

apis & ai

gemini api openrouter anthropic api

// organization

outside the code

Member — MMC (Multimedia Community)

2023 — present

UPN Veteran Yogyakarta

Active member of the campus multimedia and creative technology community.

currently open to opportunities

let's connect

I'm always open to discussing new projects, collaborations, or just having a chat about tech.

github email