Databases, Windows Server, VPN, backups, virtualization, endpoint security, and restores.
Latest blogThe time I found a v0 API billing bug
Joe Simo
AI-Native Full-Stack Product Engineer, FL.
React / Next.js / TypeScript / JavaScript / Tailwind CSS / shadcn/ui / Three.js / Motion
Work
GitHub projects
goblins-os
Goblins OS - all-Rust Fedora-bootc, macOS-quality Linux desktop
joesimo
Public GitHub repository for joesimo.
skills
Community Agent Skills by joe-simo, including a Vercel Geist design-system skill for polished UI and companion routing.
love-presentation
Funny private slideshow links for suspiciously perfect couples.
grok-financial-services
Grok-adapted Anthropic financial services skills, agents, and tools with FMP/Robinhood integration. Includes skill-creator for custom Grok finance skills.
Live products
Official product links
sim0
A browser workspace for previewing, editing, and reviewing an app.
signature0
A focused utility for preparing signature-copying workflows that survive real email paste behavior.
ChessLM
A chess training product with a Next.js web/backend app and a Unity client for browser, iPhone, and iPad.
Astrosimo
An iOS stargazing app with night planning, verified capture, and live sky guidance screens.
Case studies
Proof pages
sim0Designed and built the product interfacegarden0Built Unity game screens and web landingAstrosimoBuilt iOS planning and guidance screensChessLMChess training product and Unity clientLove PresentationBuilt the Next.js slideshow appNext FlightsFlight tracking applicationGrimmGreen Channel WatchPublic reachability monitorRoyal ShellSignature generator utilitySignature CopierOutlook paste workflowPrinter ScriptsCross-platform provisioning utility
Systems
Systems that keep moving.
System Administrator
Macromedica Dominicana
Disaster Recovery Engineer
Never Off Technology
IT Systems Administrator
Brox Industries
Certifications
Certifications
Next.js Pages Router Fundamentals
Next.js App Router Fundamentals
Next.js SEO Fundamentals
React Foundations for Next.js
PPC Fundamentals Exam
Content Marketing Fundamentals Exam
Technical SEO Exam
Local SEO Exam
Mobile SEO Exam
Backlink Management Exam
Keyword Research Exam
SEO Fundamentals Exam
Content Marketing and SEO Fundamentals Exam
Role of Content Exam
Microsoft Technology Associate: Networking Fundamentals
CompTIA A+
CompTIA Network+
Unitrends Certified Associate (UCA)
Datto Technical Specialist I
Datto Technical Specialist II
Barracuda SignNow
Barracuda Web Security Service Certified Engineer
Barracuda Email Security Service Certified Engineer
Part 107 Small Unmanned Aircraft Systems Initial
Part 107 Small Unmanned Aircraft Systems Recurrent
Commercial Drone Pilot: CFR Part 107 Explained
Cert Prep: FAA Part 107 Commercial Drone License
Use the arrow keys to browse the React Miami photo rail.
Blog
Blog
Short notes and writing.
The time I found a v0 API billing bug
A private report about successful v0 API calls missing from billing, the evidence I sent to Guillermo Rauch, and the v0 engineer who confirmed the fix.