Full-Stack Developer | Senior Software Engineer
Building Scalable Web & Mobile Apps for High-Impact Teams**
🏆 10+ Years Experience • Ex–Fortune 500 & High-Growth Startups • 100% Client Satisfaction
Profile Overview
Think bulletproof code — paired with the strategic mindset of a CTO who actually ships.
I’m Juan Hernandez, a battle-tested Full-Stack Developer who has built and scaled products used by millions of users. I don’t just write code; I solve business problems with clean, maintainable, high-performance solutions built to scale.
🧠 Modern system architecture + deep understanding of user behavior and business goals.
Why 320+ founders, startups, and enterprises trust me
Led development for products that raised $50M+ in funding and served 10M+ users
Full-stack expertise: React, Next.js, Node.js, TypeScript, Python, AWS, Docker, PostgreSQL, and more
End-to-end ownership from architecture and CI/CD to pixel-perfect UI and conversion-focused UX
Experience at Fortune 500 companies and unicorn startups — enterprise-grade reliability with startup speed
Specialist in SaaS platforms, fintech, e-commerce, AI-powered tools, Web3/dApps, and complex dashboards
Real Results
✔️ Built real-time trading systems handling $1B+ in transaction volume
✔️ Scaled APIs from 1K to 100K+ requests/second with 99.99% uptime
✔️ Reduced load times by 70%+, boosting conversions significantly
✔️ Implemented FAANG-level processes and mentored engineering teams
✔️ Flawless delivery — every project shipped on time, on budget, with clean, documented code
Recent Client Feedback (Series B CEO)
“Juan is hands-down the best full-stack engineer I’ve ever worked with.
He thinks like a founder, anticipates issues before they happen, and ships production-ready code faster than entire teams I’ve hired. Worth every penny.”
My Philosophy:
Great software is invisible 🚀**
Users should love your product — not notice the technology behind it.
I build fast, secure, scalable systems so you can focus on growth, not debugging.
📩 Ready to build something exceptional?
Send me a message and let’s make your next big idea real.
I take on only 2 new projects at a time to guarantee white-glove service and world-class execution.
📅 Current Availability: 2 openings for November–December 2025
Juan Hernandez - CEO Fluxovia LLC Digital Agency.
Full-Stack Developer & Senior Software Engineer