MARCUS GRANT LEE

CTO & Full-Stack Engineer

A Software Engineer with experience in Specialty Mechanical Engineering, Infrastructure and Enterprise hardware

Core Competencies

Full-Stack Engineering

  • Mobile Development (Expo & React Native)
  • Modern Web Frameworks (Next & Remix)
  • Backend & API Architecture
  • Legacy System Modernization

AI Research & Engineering

  • Proprietary Generative Models
  • LLM Fine-Tuning & Deployment
  • ML Infrastructure & Optimization

Infrastructure & DevOps

  • Distributed Virtualization
  • Multi-Cloud Architecture
  • Enterprise System Administration
  • Complex Network Management

Featured Projects

Dog Calendar Medicine Tracker

Mobile application for tracking pet medication schedules with simple AM/PM dosing functionality. Designed for pet owners to manage consistent medicine administration.

React NativeExpoTypeScriptAsyncStorage

Senergy Global

Corporate website for surfactant and environmentally friendly chemical company featuring InfernoX firefighting solution, MWP agricultural technology, and comprehensive environmental product information.

Next.jsReactTailwind CSSVercel

Extension.new

AI-powered platform for generating complete browser extensions from a single prompt. Automatically packages and deploys functional extensions with minimal user input.

Next.jsTypeScriptBrowser APIsAI Integration

Soeren-Ai

LinkedIn data aggregation tool with browser extension, full web interface, authentication system, and Stripe payment processing. Comprehensive professional networking data analysis platform.

ReactNode.jsStripeBrowser ExtensionPostgreSQL

LatticeMine

3D Three.js world simulator and mining game where users purchase autonomous bots to mine resources on their behalf. Real-time resource management and economy system.

Three.jsReactWebGLTypeScriptWebSocket

APlusLawnCare

Complete lawn care service platform with user authentication, scheduling system, availability management, and contact features. Full business management solution for local providers.

ReactNode.jsExpressJWT AuthPostgreSQL

GraphQL-Viewer

Free open-source AWS Amplify GraphQL compatible viewer with relationship management, D3.js charts, inline editing, GQL editor, schema visualization, and comprehensive query exploration tools.

ReactGraphQLD3.jsAWS AmplifyTypeScript

RankedArrowsWeb

Web-based Three.js multiplayer game where players navigate one square per action and shoot arrows on cooldown in a 25x25 grid arena. Turn-based tactical combat system.

Three.jsReactWebRTCWebSocketTypeScript

RankedArrows

Mobile Godot game with swipe-based navigation and long-press shooting mechanics. Character rotation and cooldown-based combat system in competitive multiplayer arena.

GodotGDScriptMobile InputMultiplayer

BenchWatch

Sports analytics startup aggregating NBA data since 1990. Comprehensive scraping project analyzing player bench time patterns and sports betting odds across all games, teams, and players.

FastAPISQLiteWeb ScrapingData AnalyticsPython

FFMpeg-kit React Native Maintenance

Took over maintenance of deprecated React Native FFmpeg library, implementing JSI interface for video transformations via CLI commands directly in React Native apps.

React NativeJSIC++FFmpegTypeScript

Exterior Rescue Roofing

Construction company website with roofing services, seamless gutters, insurance help, reCAPTCHA, user accounts, blog, image gallery, and mobile optimization. Built for free hosting.

ReactNext.jsNode.jsMongoDBCloudinary

React-Native-Live-Markdown Fork

Enhanced fork of react-native-live-markdown with improved memoization, advanced styling options, and custom configurations for optimal LLM content rendering in mobile applications.

React NativeMarkdownTypeScriptPerformance Optimization

DataDriven

Stealth startup project currently in development. More information to be released in the future.

TypeScriptReactNode.jsAI/ML

React-QR-Code

Fixed critical TypeScript errors in popular React QR code library, improving type safety and developer experience for thousands of projects.

ReactTypeScriptQR CodeLibrary Maintenance

Ballclicker

Cookie clicker clone game using React Native Reanimated for smooth animations. Also developed Godot version for cross-platform deployment.

React NativeReanimatedGodotGame Development

Collect-Connect

Sports card collection management app with card scanning capabilities, visual binder organization, and real-time eBay price tracking for complete collection valuation.

React NativeComputer VisioneBay APISQLite

React-Native-Collapsible-Tab-View Fork

Forked and maintained popular React Native library, fixing deprecated PropTypes and extending styling capabilities. Eventually merged fixes back to main library.

React NativeTypeScriptLibrary MaintenanceUI Components

Pearl Event Management

Jamestown NY event management application. Assisted in company founding, setup of Expo app infrastructure, backend development, and initial UI design.

ExpoReact NativeNode.jsMongoDB

GoatFort Climbing Gym Tracker

Climbing gym management and tracking application for GoatFort in Warren, Pennsylvania. Route tracking, progress monitoring, and community features.

ReactNode.jsExpressMongoDBMobile First

Notable Work

Tattoo Studio Platform

Complete business management platform for tattoo studios with client management, appointment scheduling, and financial tracking. Scaled to 200+ paying customers with some studios managing 50,000+ clients.

ReactNext.jsReact NativeNode.jsGCPAWSVercel

Soco Club Mobile App

Cross-platform event management system with real-time chat similar to iMessage. Distributed across 7 countries with self-hosted Django backend and Redis for real-time messaging.

React RouterReact NativeDjangoCeleryRedisDocker

Spice Gaming Tools

Alternative to Stripe and StreamElements for gamer donations with complete ledger system and bank-backed payments. Pioneering work in diffusion models for chat-based image editing.

Remix RunFastAPIReact NativeWhatsApp APIHuggingFace

La Bourse Aux Livres

E-commerce platform for book trading using Expo and Firebase. Helped deliver 100,000+ books yearly and achieve $1M ARR.

ExpoFirebaseGCPAngularStripe

Eagle Radio Systems

Custom software solutions for radio communication systems including automation tools and infrastructure engineering applications.

SvelteReactReact NativePythonVisual Basic

Case Studies

Tattoo Studio

Supporting Studios with 50,000+ Clients Each

Engineered scalable infrastructure enabling individual studios to manage 50,000+ clients while serving 200+ studio customers with robust systems for client management, appointment scheduling, and financial tracking.

Results

  • Built infrastructure supporting 50,000+ clients per studio
  • Scaled to serve 200+ paying studio customers
  • Developed cross-platform apps for iOS/Android/Web
  • Led engineering team across full stack development
ReactNext.jsReact NativeNode.jsGCPAWS
Soco Club

Comprehensive Event Management Platform

Engineered a complete event management ecosystem with real-time messaging system similar to iMessage, featuring comprehensive event coordination tools, cross-platform mobile applications, and robust self-hosted infrastructure supporting international operations.

Results

  • Built real-time chat system from scratch using WebSockets with delivery/read receipts and typing indicators
  • Developed self-hosted Django backend with Redis for real-time messaging scalability
  • Implemented comprehensive notification system using Twilio API for SMS and push notifications
  • Achieved full offline capability allowing seamless operation without internet connectivity
  • Scaled platform to support 7 countries with multi-language and timezone support
  • Created cross-platform apps using Expo and React Router for iOS/Android/Web deployment
  • Engineered event management system with scheduling, registration, and attendance tracking
React NativeExpoReact RouterDjangoRedisWebSocketTwilio APICeleryDockerOffline-First