I will integrate apis to your web application

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barnetvilem
B
barnetvilem
Vilém Barnet
Certaines informations sont présentées en anglais.

À propos de ce service

Professional API Integration for Web Applications

I provide reliable API integration services to connect your application with the tools, data, and features it needs. From payment gateways to AI services, I ensure your APIs are set up securely, work efficiently, and are easy to maintain.


What I Deliver

  • REST API integration
  • Third-party APIs (Stripe, PayPal, Google, OpenAI, etc.)
  • Authentication and API key management
  • Webhooks and event-driven automation
  • Error handling and performance optimization
  • Documentation for future maintenance


Why Work With Me

  • Full-stack development experience (React, Next.js, Node.js, Express, FastAPI, MongoDB, Supabase)
  • Focus on clean, maintainable, and secure code
  • Clear communication and regular progress updates
  • Flexible solutions that can scale with your project


Whether you need to add a single API to an existing app or build a complex workflow that connects multiple services, I can help you plan and implement the right solution.

Découvrez Vilém Barnet

Vilém Barnet
  • DeRépublique Tchèque
  • Membre depuisaoût 2025
  • Langues

    Tchèque, Anglais, Espagnol, Coréen, Indonésien, Grec
Full-stack developer & AI engineer with a design background, creating modern, AI-powered web applications that are both high-performing and visually polished. I work with React (NextJS) and TypeScript on the frontend, and Python with FastAPI or NodeJS with Express on the backend. My AI expertise includes building RAG pipelines, developing AI agents with LangChain and LangGraph, and delivering custom LLM-driven solutions tailored to client needs.

Mon portfolio

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