Node.js backend systems and real-time APIs.
Built high-performance servers handling millions of requests with minimal latency.
Expertise
20 years of experience building websites and mobile apps.
Andrew Klossner
Twenty years in engineering roles taught him one thing: the best solutions come from listening first, building second. He's led teams through infrastructure migrations, architected HIPAA-compliant systems, and shipped products new mobile products. No shortcuts. No excuses. Just reliable code and honest timelines.
- ✓Built scalable systems
- ✓Led technical teams through web and mobile app builds
- ✓Built security-first architectures for regulated industries
TECHNOLOGY
Deep expertise across the full stack.
React and React Native across web and mobile.
Shipped responsive interfaces and native mobile applications that feel native.
AWS infrastructure with HIPAA and enterprise compliance.
Architected secure, auditable cloud systems for healthcare and financial services.