Lead Software Engineer | 3x Acquisition Veteran | AI & React Specialist

I have 15+ years of experience building scalable web and mobile applications for millions of users. I specialize in React, TypeScript, React Native, Node.js, and AI-powered solutions using AWS and GCP.

Currently leading a mobile team at HYGIA Health Services, developing a 0→1 AI healthcare platform with HIPAA-compliant features, AI avatar interfaces, and real-time clinician communication.

I also founded Tech With Big D, a web studio delivering AI-driven, high-performance websites and applications for businesses and creatives.

• Languages: JavaScript (ES6+), TypeScript, Java, Python, C, HTML/CSS
• Frameworks & Libraries: React, Redux, Next.js, React Native, Node.js, NestJS, Django, Material-UI
• Tools & Platforms: Git, Docker, Jenkins, GitHub Actions, AWS (Bedrock, Lambda, CloudWatch, API Gateway), GCP, CI/CD, WebSockets, Nx
• Concepts: Micro Frontends, Monorepos, TDD, CI/CD, Performance Optimization, HIPAA Compliance

• AI Healthcare Platform: Lead mobile team of 6, architected React Native iOS/Android app, implemented AI avatar interface with AWS Bedrock Agent Core LLM, HIPAA-compliant video calls via Vonage.
• Music Streaming Platform: Scalable 0→1 Next.js/React app, real-time chat & push notifications, custom HLS video player, micro frontends, CI/CD on GCP.
• Marketplace for Acquisition: Built with React, Redux, React Native, micro frontends; led team delivering iOS/Android apps and 350+ co-branded platforms (Uber, Amazon, eBay).

• 💼 LinkedIn: linkedin.com/in/davidmascia
• 🌐 Portfolio: techwithbigd.com/portfolio
• 🐙 GitHub: github.com/dmascia

“Building AI-powered apps that scale and deliver exceptional user experiences.”