Rayhan Destian

Full-Stack Developer · Game Server Founder · Security Researcher

Founder and sole developer of Kaizen Network, an Indonesian Minecraft server network running since 2022. I build and operate live web and game systems.

Projects

A selection of work I'm proud of.

ThesisPrivacy by Design

Privacy Features for Kaizen Network

Undergraduate thesis implementing privacy features based on Indonesia's Personal Data Protection Law (UU PDP): in-game consent, a Next.js portal for data access and deletion, audit trails and automated retention.

Next.js TypeScript Skript
Top MC Servers Indonesia Screenshot

Data VisualizationMinecraft

Top MC Servers Indonesia

Interactive ranking history of Indonesia's top Minecraft servers from 2012 to 2026, rebuilt from 49 Wayback Machine snapshots covering 150+ servers. Custom bump charts with a downloadable dataset, published on the Kaizen Network blog.

Next.js React React TypeScript
Cloudshort Screenshot

URL ShortenerServerless

Cloudshort

Private URL shortener built with TypeScript, Cloudflare Workers and Hono. Uses KV-backed redirects, D1 click analytics and a React admin dashboard protected by JWT/cookie authentication.

Cloudflare Hono Hono React React TypeScript
UPer.li Screenshot

URL ShortenerUniversity Project

UPer.li

University-exclusive URL shortener for Universitas Pertamina. Features role-based auth, 2FA, QR codes, analytics dashboard, and Google Safe Browsing integration.

Next.js TypeScript PostgreSQL PostgreSQL Prisma
QuickBites Screenshot

Mobile AppFood Ordering

QuickBites

Mobile food ordering app featuring real-time order tracking, seller dashboards, and seamless Firebase backend integration.

Flutter Flutter Firebase Firebase
Packvertise Screenshot

StartupBusiness PitchingMBKM

Packvertise

Solo-founded startup placing brand ads on disposable food packaging: advertisers reach customers where they eat, vendors get free packaging plus a revenue share. Distributed 1,000 QR-tracked packages through two campus canteens and ran a pilot campaign for one client. Top 7 of 31 teams at UPER CASE IB 2025.

Next.js TypeScript Supabase Tailwind CSS

IoTEmbedded

Smart Water Tank

IoT solution for real-time water level monitoring and automated pump control using ESP32 and web app integration.

MicroPython MicroPython Node.js Node.js MySQL MySQL

AI/MLComputer Vision

Emotion Detection CNN

Deep learning model achieving 61% accuracy in detecting 7 facial emotion classes using Convolutional Neural Networks.

Python Python TensorFlow TensorFlow Google Colab Google Colab

Skills

Tools and skills behind my projects.

Languages

TypeScriptJavaScriptJavaPythonDartSQL

Frameworks & Libraries

Next.jsReactNode.jsHonoTailwind CSSPrismaFlutterdiscord.js

Web Development

Payment IntegrationWebhooksAuthentication

Security & Privacy

Security ResearchVulnerability DiscoveryPrivacy by Design

Minecraft Development

SpigotVelocitySkriptPlugin DevelopmentGameplay Systems

Databases & Storage

MongoDBMariaDBPostgreSQLRedisCloudflare D1Cloudflare KVSupabaseFirebase

DevOps & Cloud

DockerLinuxPterodactylCloudflare WorkersDNS Management

Data, ML & IoT

Data VisualizationTensorFlowIoT (ESP32)

Achievements

Recognition outside of shipped code.

4 CVEs 2026

Microsoft Security Response Center

Credited as 1 of 2 finders of a remote code execution in Visual Studio Code (Important, CVSS 9.6).

CVE-2026-102238

Credited as sole finder of an information disclosure in Visual Studio Code (Important, CVSS 6.5).

CVE-2026-47285

Credited as 1 of 2 finders of a security feature bypass in VS Code Copilot Chat (Important, CVSS 7.1).

CVE-2026-65675

Credited as 1 of 22 finders of a remote code execution in Windows PowerShell (Important, CVSS 8.0).

CVE-2026-40400
Top 7 / 31 2025

UPER CASE IB 2025

Top 7 of 31 teams with Packvertise at Universitas Pertamina's MBKM incubation program, advancing through 2 of 3 pitching rounds as a solo founder.

View certificate

About

I'm the founder and sole developer of Kaizen Network, an Indonesian Minecraft server network I've run since 2022. It has grown to 100,000+ registered accounts and 150 peak concurrent players. I own the whole stack: TypeScript/Next.js applications, payment integrations, custom Java plugins and cloud operations, from implementation to deployment.

I graduated in Computer Science from Universitas Pertamina (Indonesia) in August 2026. My thesis implemented privacy features for online game platforms based on UU PDP.

I also founded Packvertise, an ad-on-packaging startup that reached the top 7 of 31 teams at UPER CASE IB 2025.

On the side, I do security research, with four Microsoft-credited vulnerability finds in Visual Studio Code and Windows PowerShell. I also explore AI/ML and dabble in IoT.

Contact

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Prefer email? Reach me at [email protected]