Commercial
Denser
Decentralized social media frontend for Hive Blockchain. Successor to hive.blog with blog and wallet modules.
Next.js TypeScript Hive Blockchain Playwright Turbo
KK
Available for work
Full-Stack Developer & Freelancer Hi, I'm
Hi, I'm
Krzysztof Kocot
I build modern web and mobile applications with a passion for clean code and excellent UX. Working remotely from Katowice, delivering solutions for clients worldwide.
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About me
Passion for creating digital solutions
I'm a Full-Stack Developer with over 3 years of commercial experience. I specialize in building scalable web and mobile applications.
I work as a freelancer, which allows me to take a flexible approach to each project and collaborate directly with clients. My goal is to deliver solutions that not only work but also delight users.
See pricing 3+ Years of experience
10+ Completed projects
1500+ GitHub commits
KK
Skills
Technologies I specialize in
Frontend
React
Next.js
TypeScript
Tailwind CSS
Astro
Solid.js
Vite
Backend
Node.js
Bun
Elysia
Express
MongoDB
Mongoose
Zod
Stripe
Nginx
Mobile & Testing
React Native
Expo
Playwright
Vitest
Testing Library
DevOps & Tools
Docker
Git
Vercel
Turborepo
Linux
Traefik
pnpm
AI Tools
Claude
Claude Code
Gemini
Projects
Selected works
Full-Stack App
ConqSite
Platform for Conquerors Blade gaming community. Guild management, lineup builder, Discord bot integration.
Next.js MongoDB Discord API NextAuth Tailwind
Backend
Elysia Backend
REST API built with Bun and Elysia framework. Serves multiple frontend projects with shared database.
Bun Elysia MongoDB Zod
Mobile
Shopping List
Mobile app for managing shopping lists built with React Native and Expo.
React Native Expo TypeScript
Tool
Excel Reader
Web tool for uploading and analyzing Excel files. Data visualization with interactive charts.
React TypeScript Recharts
Client
Stasiak Opał
Landing page for local coal business. Built with React 19 and TanStack Router, optimized for performance and SEO.
React 19 TanStack Router Tailwind
Education
Flashcards
Educational app for learning with flashcards. AI-powered card generation, spaced repetition, and progress tracking.
React 19 TanStack Query Google OAuth
Full-Stack App
ProjectHub
Project management app with drag & drop boards, task tracking, and data visualization with charts.
React 19 DnD Kit Zustand Recharts
Pricing
Website & App Pricing
Transparent pricing ranges for web and mobile projects. Final cost depends on project complexity and specific requirements.
Landing Page
One-page website, perfect for product presentation or marketing campaign
Project cost
1200 - 3000 PLN
Annual maintenance
500 - 1000 PLN/year
Business Website
Multi-page website with CMS, contact form, and SEO optimization
Project cost
3000 - 8000 PLN
Annual maintenance
1000 - 2500 PLN/year
E-commerce Store
Online store with payment integration, inventory management, and analytics
Project cost
7000 - 20 000 PLN
Annual maintenance
2000 - 5000 PLN/year
Web Application
Custom web app with user authentication, database, and API integrations
Project cost
10 000 - 35 000 PLN
Annual maintenance
3000 - 8000 PLN/year
Mobile App
Cross-platform mobile application for iOS and Android
Project cost
12 000 - 45 000 PLN
Annual maintenance
4000 - 10 000 PLN/year
Prices in PLN. All estimates are approximate and may vary based on specific requirements. Final pricing will be provided after project consultation.
Get a Quote
Request a Project Quote
Fill out the form below and I'll get back to you with a detailed estimate within 24-48 hours.
Contact
Let's talk about your project
Looking for a developer for your project? I'd love to discuss your needs and propose the best solution.
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