Petr Kolonicz

I’m a Full-Stack Web Developer with 6 years of experience delivering high-performance web applications and digital solutions. I specialise in MERN Stack, Next.js, Laravel/PHP, and Python/Django, helping businesses of all sizes build scalable, reliable, and user-focused platforms.

🔹 Web & App Expertise

As a full-stack developer, I design and develop robust solutions using React, Next.js, Node.js, and Laravel, ensuring every project is secure, fast, and easy to maintain. From MVPs to enterprise tools, I focus on performance and long-term scalability.

Core Skills:

React.js • Next.js • TypeScript • Node.js • Laravel • Django • FastAPI • Tailwind CSS • Supabase • PostgreSQL • Firebase • AWS

🔹 Frontend & Backend Mastery

I create engaging, responsive interfaces with React/Next.js and build reliable backends with Laravel, Node.js, or Python. My goal is seamless UX, smooth API integrations, and efficient, modular code that scales.

🔹 AI & Automation

I integrate AI tools and APIs (OpenAI, automation workflows, data pipelines) to enhance productivity, analytics, and user experience — combining modern intelligence with clean engineering.

🔹 Results-Driven Development

I treat every project like my own: strategic planning, transparent communication, and clean, well-documented delivery. You’ll receive stable, production-ready code that’s easy to manage and extend.

✅ What I Offer

• Full-stack Web Development (React, Next.js, Laravel, Django)

• Custom API & CRM Integrations

• Supabase & Firebase Setup

• AI/ChatGPT Integrations

• SaaS & Internal Platforms

• Maintenance & Optimization

🚀 Why Clients Choose Me

✔ US-based with excellent communication

✔ 7+ years of full-stack experience

✔ Clean, maintainable code & reliable delivery

✔ End-to-end development ownership

✔ Focus on speed, scalability, and user experience

Whether it’s a modern SaaS, internal workflow system, or AI-enhanced web app, I deliver clean, scalable, and future-ready solutions that help your business grow.