I will develop java backend apis and full stack web applications

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wu you jian

About this gig

Hi! Need help with a Java backend, a full-stack feature, or adding AI to your app? I can help turn your ideas into working features.


Here's what I can help with:

- Java backend development and bug fixes

- APIs, databases, and business logic

- Frontend pages and backend integration

- AI API integration for chatbots and content generation

- Simple AI-powered tools and workflow automation

- Improving and fixing AI-generated code


I also use AI-assisted development tools where helpful, with manual code review and testing.


Packages:

Basic: One small Java bug fix or simple API update.

Standard: One small backend module with up to 5 simple APIs and database integration.

Premium: One small full-stack feature with up to 3 simple pages, 5 APIs, and database integration.


AI features are scoped separately based on complexity. Please contact me to confirm the right package or get a custom quote.


You'll receive source code for the agreed work and simple setup instructions.


Please message me before ordering so we can confirm scope, timeline, and price. Revisions cover the agreed scope. Hosting, AI API usage, and paid services are not included.


Get to know wu you jian

wu you jian

Java Backend and Full Stack Developer

  • FromChina
  • Member sinceOct 2026
  • Languages

    English
Hi! I'm a Java developer focused on backend and full-stack development. I can help with APIs, databases, business logic, bug fixes, and frontend integration. I also build AI-powered features, including chatbots, AI API integrations, and simple workflow automation. Whether you need a new feature, help with an existing project, or AI tools connected to your app, tell me what you're building and let's work out a practical solution.