Joshua Companion

Product engineer building AI applications, mobile experiences, and workflow automation. Production experience with React Native, Expo, TypeScript, and full-stack systems.

Featured Projects

A selection of applications I've architected and developed, from React Native mobile apps to AI-powered platforms.

Professional Work · April–October 2026

Sleeper app logo

Sleeper

Software Engineer

Developed across Sleeper's production React Native mobile app and Next.js website as part of its engineering team, contributing to mobile and web experiences for the fantasy sports platform.

React NativeNext.js
View Sleeper on the App Store ↗
Official Sleeper App Store screenshot showing live sports scoresOfficial Sleeper App Store screenshot showing game chat
Official App Store screenshots. App UI and imagery © Blitz Studios, Inc.
HubaVet

HubaVet

React Native veterinary telemedicine platform with Turborepo monorepo, real-time WebRTC video consultations, Stripe Connect payments, and in-app payment requests.

React NativeExpoTypeScriptWebRTCStripe ConnectNext.jsTurborepoPush Notifications
SF Study - Parent Hub

SF Study - Parent Hub

React Native clinical research app with phase-gated task management, session recording, and a Next.js admin dashboard for researchers.

React NativeExpoTypeScriptNext.jsSupabasePostgreSQLPush NotificationsOTA Updates
Olympus AI

Olympus AI

React Native fitness tracking app with Arduino hardware integration, AWS backend with GraphQL API, and real-time workout data syncing.

React NativeExpoTypeScriptAWS AmplifyGraphQLDynamoDBAWS Cognito
Penny

Penny

React Native subscription tracking app with Plaid integration, email alerts for price changes, and automated duplicate charge detection.

React NativeExpoTypeScriptSupabasePostgreSQLPlaidRevenueCatOTA Updates
StoryHero

StoryHero

Live React Native app on both stores — AI-powered bedtime story generator with personalized characters, custom illustrations, and in-app purchases.

React NativeExpoTypeScriptOpenAI APIAI Image GenerationSupabaseiOSAndroid
Cardtoplease

Cardtoplease

React Native + web app that turns photos into AI greeting cards, with Stripe payments and a credits-based model.

React NativeExpoTypeScriptNext.jsTailwind CSSStripeOTA UpdatesVercel
iBorrowed Marketplace

iBorrowed Marketplace

React Native marketplace app with geolocation-based item discovery, push notifications, and in-app messaging.

React NativeFirebaseGoogle Maps APIPush Notifications
AutoHDR

AutoHDR

Real estate photography platform — full-stack engineering across Next.js, FastAPI, and containerized ML inference on AWS.

Next.jsPythonTypeScriptFastAPIAWS (S3, EC2)DockerLabel Studio
PouncerAI

PouncerAI

AI-powered Chrome extension for personalized Upwork proposal generation, built with TypeScript and the OpenAI API.

TypeScriptChrome ExtensionOpenAI APIPlasmoFirebaseNext.js
Pouncer Profile Optimizer

Pouncer Profile Optimizer

AI-powered Upwork profile analyzer with scoring, keyword recommendations, and suggested rewrites.

PlasmoNext.jsTypeScriptFirebase (Firestore, Functions, Auth)OpenAITailwind CSSVercelChrome Extension API
Volcon 3D Configurator

Volcon 3D Configurator

Interactive 3D vehicle configurator built with Three.js, React Three Fiber, and a Blender asset pipeline.

Three.jsReact Three FiberNext.jsTypeScriptBlenderGLTFWebGL ShadersVercel
Volcon Website

Volcon Website

Complete digital presence for electric vehicle company, including website, mobile app backend, and Stripe payment integration.

Next.jsNode.jsStripePostgreSQLAWS
Betweened

Betweened

Social media platform focused on educational and age-appropriate content for tweens with AI-powered content moderation.

ReactNode.jsMongoDBWebRTCFirebase

Work Experience

Professional engineering experience across mobile, web, and AI products.

Software Engineer

Sleeper
April 2026 - October 2026

Developed across Sleeper's production React Native mobile app and Next.js website as part of its engineering team, contributing to mobile and web experiences for the fantasy sports platform.

Technologies:

React NativeNext.js

Full Stack Engineer

AutoHDR
January 2025 - April 2026
Austin, TX

Developed the web and backend platform for automated real estate photography editing, working across Next.js, FastAPI, Python, and AI image processing infrastructure on AWS.

Key Achievements:

  • •Built containerized ML inference pipelines on AWS and contributed to infrastructure migration from GCP.
  • •Built quality validation and alerting tools, plus data pipelines for image grouping, deduplication, and dataset preparation.

Technologies:

Next.jsTypeScriptPythonFastAPIAWSDockerLabel Studio

Lead Mobile & Full Stack Engineer

Ecordia Studios
November 2023 - 2024
Austin, TX

Led development and release of React Native and Expo applications across health tech, clinical research, fintech, and AI.

Key Achievements:

  • •Built HubaVet's WebRTC telemedicine experience and a clinical research app with a Next.js dashboard for recordings and reporting.
  • •Developed Olympus AI's fitness tracking foundation with Arduino integration, GraphQL through AWS Amplify, and DynamoDB.
  • •Implemented shared mobile and web code, push notifications, and OTA updates.

Technologies:

React NativeExpoTypeScriptNext.jsWebRTCGraphQLAWS AmplifySupabaseOTA Updates

Lead Engineer

PouncerAI Inc.
2023 - 2024
Austin, TX

Built an AI-powered Chrome extension for personalized Upwork proposal generation with the OpenAI API.

Key Achievements:

  • •Led extension architecture and implementation, including migration from Plasmo to a custom extension architecture.
  • •Built feature toggles with user segmentation and browser integration with error handling.

Technologies:

TypeScriptChrome Extension APIsOpenAI APIPlasmoNode.jsFirebase

Senior Front-End Engineer

Volcon
March 2022 - October 2023
Round Rock, TX

Owned development of the company website and digital presence.

Key Achievements:

  • •Built Node.js backend infrastructure for the mobile application and integrated Stripe payments for vehicle preorders.

Technologies:

Next.jsNode.jsStripePostgreSQLAWS

About Me

Production engineering across mobile, web, and AI products.

I build products across mobile, web, and backend systems. My work includes React Native and Expo apps released to iOS and Android, real-time telemedicine, clinical research tools, subscription tracking, AI-generated content, and browser extensions that automate repetitive workflows.

I have built AI features with the OpenAI API and worked on the infrastructure behind image processing products. My mobile experience includes navigation, push notifications, OTA updates, payments, real-time communication, and shared mobile and web architectures.

Alongside my professional engineering work, I own Happii Apps with my partner Daniel. Our products include Swipy, a photo cleaner, and Recap, an audio notes app. Pouch Tracker is nearing release, and GlossyShots, a screenshot web app, is in development.

Based in Austin, Texas, I am interested in roles building AI products, mobile and full-stack applications, and developer automation tools.

Mobile

React NativeExpoTypeScriptReact NavigationOTA UpdatesPush NotificationsReanimatedNativeWind

Web & Backend

ReactNext.jsNode.jsPythonFastAPIGraphQLREST APIsWebSocketsSupabaseFirebasePostgreSQLAWS

AI & Automation

OpenAI APIAI Content GenerationML Inference PipelinesChrome Extension APIsPlasmo

Delivery & Integrations

GitDockerEAS BuildCI/CDJestMaestroSentryStripePlaidWebRTC

Get In Touch

I'm interested in engineering roles building AI products, mobile and full-stack applications, and developer automation tools.

Contact Information

Austin, Texas

Connect With Me