Gemtool

I'm a senior engineer building tools, backends, and experiences for Roblox and the web.

I work end to end, from gameplay systems to the servers, payments, and security behind them. Along the way I've contributed to big games and worked alongside some big names.

Open for work
gemtool

9+

years building

133.7M

game visits

875

playing now

Co-founder of Soteria

Contributor to Luau

Games With Active Players

A few of the games I've worked on that still have players today. Not every project stays live forever.

Balloon Game 🎈

860 playing · 119.4M visits

Podcast Tycoon 🎙️

15 playing · 14.3M visits

Tech Stack

›SpecialtiesRoblox Game Development, Luau Security Research, Infrastructure & Server Administration +4 more

Roblox Game Development

Luau Security Research

Infrastructure & Server Administration

Application Security & Penetration Testing

API & Payment System Design

Applied Cryptography (AES)

Custom Build Tooling & Code Obfuscation

›LanguagesLuau, Lua, TypeScript +5 more

Luau

Lua

TypeScript

JavaScript

Python

Rust

HTML

CSS

›Frameworks & LibrariesReact, Next.js, Express +8 more

React

Next.js

Express

EJS

Knit

Unify

Shadcn

TailwindCSS

Discord.js

Tauri

Electron

›Tools & ServicesBetter Auth, Clerk, Fumadocs +13 more

Better Auth

Clerk

Fumadocs

MaxMind

GitHub

GitHub CLI

Cloudflare

Postman

Bruno

Vercel

Railway

Render

Hetzner

OVH

Stripe

NowPayments

›Databases & Roblox ToolingMongoDB, FaunaDB, Rojo +2 more

MongoDB

FaunaDB

Rojo

Wally

StyLua

›Analytics & SEOVercel Analytics, Google Analytics, Google Indexing +3 more

Vercel Analytics

Google Analytics

Google Indexing

Website SEO

Cloudflare Turnstile

reCAPTCHA

›AI & LLM ToolingAI MCP, Context Engineering, Local LLM Deployment (Open-Weight Models) +1 more

AI MCP

Context Engineering

Local LLM Deployment (Open-Weight Models)

Cloud LLM Integration