Billie P Heidelberg
Contract Full Stack & Senior Engineer Roles
Full Stack Developer • Mobile Engineer
Full stack developer specialized in React, TypeScript, and Node.js with 8+ years of experience building scalable web and mobile applications. Expert in React Native, iOS/Android development, and cross-platform solutions.
Featured Projects
Innovative solutions built with modern technologies
Client
App Store
That Aisle Platform
Complete platform solution with React Native mobile app and React admin portal for hair product discovery and community engagement.
React Native
React
Firebase
Admin Portal
Featured
Daily Wick
AI-powered trading journal with analytics and performance insights for professional traders.
Next.js
TypeScript
Supabase
AI
Privacy-First
Baby Tracker
Privacy-first baby tracking app for parents with secure data storage and offline functionality.
React Native
TypeScript
Secure Storage
Offline
Social Platform
Simmr
Privacy-first social discovery platform for non-monogamous and polyamorous communities with real-time features.
React
TypeScript
Next.js
GraphQL
Venture
TOLO
Content discovery platform helping underground artists get discovered through fair algorithm-based ranking.
React Native
TypeScript
Supabase
Segment
E-commerce
AMIR BLAQ
Luxury fashion e-commerce platform with Next.js frontend and Django admin portal for content management.
Next.js
Django
PostgreSQL
AWS
Nonprofit
Love & Service 1st
Professional nonprofit landing page with community resources and mission-driven content sections.
Next.js
Tailwind CSS
Responsive
Technologies I Ship With
Stacks chosen for real products. Every item below was load-tested by users.
Frontend
- React / Next.js — Daily Wick, Simmr, That Aisle
- TypeScript — all production projects since 2020
- Tailwind CSS — this portfolio, Love & Service 1st
- React Native — That Aisle (App Store live), TOLO
Backend & APIs
- Node.js / Express — Simmr, TOLO API layer
- Python / Django — Baby Tracker API, AMIR BLAQ admin
- PostgreSQL — InvestCloud ($2B/day), Simmr, Baby Tracker
- GraphQL / Apollo — Simmr discovery platform
Cloud & Infrastructure
- AWS (Lambda@Edge, S3, CloudFront) — Simmr image pipeline
- Vercel — Daily Wick, this portfolio
- Docker / Nginx — Baby Tracker self-hosted deploys
- Firebase — That Aisle real-time features
AI & Integrations
- OpenAI API — Daily Wick trade analysis engine
- Stripe — Simmr subscription billing
- Twilio — Simmr MMS & verification
- Segment — TOLO analytics tracking
Data & Performance
- Redis — Daily Wick caching layer
- SQS — Daily Wick async task queues
- SWR / Zustand — TOLO feed performance (+40%)
- ETL Pipelines — InvestCloud financial data (50+ institutions)
Legacy & Breadth
- Ruby on Rails — Airbnb ambassador platform
- Groovy / GlassFish — InvestCloud enterprise services
- MongoDB — Drink Drank LA, GA curriculum projects
- GSAP / HTML5 — BBDO interactive ad campaigns
Technical Achievements & Impact
Building great products and contributing to team success
11+
Technical Articles
Sharing knowledge with the developer community
8+
Years Building
Production applications people use daily
150+
Developers Mentored
Through bootcamps and 1-on-1 coaching
$2B+
Daily Assets Processed
Enterprise fintech systems at InvestCloud
Technical Contributions
- Built scalable systems serving 100K+ daily users
- Improved application performance by 60%
- Set up CI/CD pipelines, cut deployment time by 80%
Team Collaboration
- Collaborated in cross-functional teams of 5+ developers
- Helped mentor 15+ developers grow their skills
- Contributed to coding standards and best practices