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YichengCode

Full-Stack & AI Development

Websites, admin panels, APIs, integrations, and AI features built into your existing product.

// who it's for

You need something built — a new feature, a dashboard, an API, a payment integration, or an AI assistant on your own data.

What's included

  • Backend: Laravel, Node.js, Python (Django, FastAPI), Go
  • Frontend: React, Next.js, Vue, Nuxt, TypeScript, Tailwind
  • E-commerce: WordPress, WooCommerce, Shopify, Magento
  • Payment and third-party API integrations (PayPal, Stripe and more)
  • AI integration: OpenAI, Claude and other LLM APIs, chatbots, RAG knowledge bases
  • Automation: Telegram bots, scheduled jobs, data pipelines
  • Clean, documented code in your own repository

Common questions

How do you price development work?

After a short conversation, I send a written scope with a fixed price and milestones. Larger projects are split into stages.

How do I pay?

Once you approve the written quote, I send a PayPal invoice. You can pay with a PayPal balance or a card through PayPal.

Other services

// let's build

Have a project in mind?

Describe what you need. Within 24 hours you get a written plan and a fixed price — no obligation.