Background
Billie P Heidelberg

Billie P Heidelberg

Available for New Opportunities

Full Stack Developer • Mobile Expert • Technical Leader

Full stack developer specialized in React, TypeScript, and Node.js with 7+ years of experience building scalable web and mobile applications. Expert in React Native, iOS/Android development, and cross-platform solutions. Proven track record delivering production-ready platforms with a focus on performance, security, and exceptional user experiences across all devices.

View My WorkGet In TouchDownload Resume

Featured Projects

Innovative solutions built with modern technologies

Smart Trader
Featured
Smart Trader
AI-powered trading journal with analytics and performance insights. Built with Next.js, TypeScript, and OpenAI for professional traders.
Next.js
TypeScript
Supabase
AI
View Project
Baby Tracker
Open Source
Baby Tracker
An open source, privacy-first baby tracking solution that helps parents monitor feedings, diapers, sleep, and more while maintaining complete data ownership.
Django
PostgreSQL
Docker
Next.js
View Project
Simmr
2k+ Users
Simmr
The premier discovery and connection platform for the ethically non-monogamous community. Features include verification, discovery, events, and secure messaging.
React
Node.js
PostgreSQL
TypeScript
View Project
View All Projects

Skills & Expertise

Technologies and tools I work with to build exceptional digital experiences

Mobile Development
React Native5/5
iOS (Swift)4/5
Android (Kotlin)4/5
Flutter3/5
Frontend
React5/5
TypeScript5/5
Next.js5/5
Tailwind CSS4/5
Backend
Node.js5/5
Python4/5
PostgreSQL4/5
MongoDB3/5
Cloud & DevOps
AWS4/5
Docker4/5
Vercel5/5
CI/CD4/5
Other Skills
Git5/5
Agile4/5
Testing4/5
UI/UX3/5

Technical Achievements & Impact

Building great products and contributing to team success

11+
Technical Articles

Sharing knowledge with the developer community

7+
Years Building

Production applications people use daily

50K+
Lines of Code

Clean, tested, production-ready code

100%
Mobile-First

Cross-platform development expertise

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