Paja A.

I build production SaaS applications with React, Next.js, TypeScript, Node.js, PostgreSQL, Supabase, AWS, Docker, and AI integrations. I specialize in scalable multi-tenant platforms, authentication, payment systems, API integrations, and backend architecture that continues to perform as your business grows.

Top Rated Plus freelancer with 183+ successful projects, 17,000+ hours billed, and over $600k earned on Upwork, helping startups, scale-ups, and established businesses build reliable software that is designed for long-term success.

Over the past several years, I've delivered products across SaaS, e-commerce, fintech, healthcare, and enterprise software. My focus is solving the problems that typically appear after launch—authentication, billing, permissions, scalability, performance, and maintainability. I build systems that are designed to evolve, not ones that need to be rewritten six months later.

Many clients come to me after projects became difficult to maintain, failed to scale, or were left unfinished. My goal isn't just to deliver features—it's to leave you with a codebase that's clean, predictable, and easy to build on for years.

What You Can Expect

✔ Senior-level technical guidance
I'll explain tradeoffs, recommend the right solution for your business, and be transparent about complexity, timelines, and risks before development begins.

✔ Reliable communication
You'll receive consistent updates, proactive feedback, and honest answers throughout the project. You'll always know where things stand.

✔ Production-quality engineering
I prioritize clean architecture, maintainability, security, testing, and performance so your application remains stable as it grows.

✔ Long-term thinking
Every technical decision considers future scalability, new features, and operational costs—not just completing the current task.

What I Build
SaaS Platforms

React, Next.js, TypeScript, Node.js, Python, PostgreSQL, Supabase, multi-tenancy, authentication, RBAC, subscriptions, Stripe billing, dashboards, and complex business workflows.

Frontend Applications

Fast, responsive React and Next.js applications optimized for Core Web Vitals, accessibility, SEO, and user experience.

Backend Systems & APIs