Paul U.

I’m Paul Upendo, a Senior Front-End Engineer specializing in React, Vue, JavaScript, Next.js, Node.js, and Firebase. I’ve worked both as a top independent freelancer and as an engineer on Upwork’s internal Monetization Engineering team, where I improved platform performance, rebuilt critical features, and helped drive revenue at enterprise scale.

I bring a product-focused, performance-driven approach to front-end engineering — delivering fast, reliable, and scalable interfaces that directly support business goals.

What I Deliver:

• High-performance front-end development with Core Web Vitals optimization
• React & Vue migrations from legacy stacks (AngularJS, PHP, jQuery)
• Modern, scalable component systems with Tailwind, Radix UI, and reusable patterns
• Next.js applications with SSR/ISR, serverless APIs, and Firebase integrations
• Dashboards, analytics interfaces, and data visualizations
• Clean architecture, clear communication, and dependable delivery

Why Clients Trust Me:
✓ Senior-level engineering judgment
✓ Strong UX and product understanding
✓ Proven performance improvements (27% gains, 95%+ web vital performance scores)
✓ Experience building for millions of real users
✓ Clear timelines, proactive communication, and reliable execution

If you need a front-end engineer who brings speed, clarity, and senior-level technical expertise, I’d be glad to help you build something exceptional.