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I will integrate openai, claude or llm apis into your java app
Haidong Zhang
About this gig
I am a production Java developer with 9 years of experience (since 2017), specializing in bringing LLMs into real business backends.
What I can build for you:
- OpenAI / Claude / DeepSeek API integration inside your existing Java or Spring Boot application
- A chatbot endpoint with your own knowledge base (RAG: document ingestion, chunking, embeddings, retrieval)
- Multi-step AI workflows and agent-style automation with proper error handling, logging and rate-limit handling
- Deployment and handover documentation
Why me: 9 years of Java production experience (healthcare lab systems, environmental-monitoring cloud platforms, an international airport passenger app). I write clean, documented code, communicate daily, and reply within one day.
Message me before ordering so I can confirm the best architecture for your use case.
Get to know Haidong Zhang
Haidong Zhang
Java Backend Developer Spring Boot and AI Integration
- FromChina
- Member sinceSep 2026
- Avg. response time1 hour
Languages
English
I am a production Java developer with 9 years of experience (since 2017), specializing in Spring Boot backends and AI integration. What I can do for you: LLM integration (OpenAI / Anthropic / DeepSeek APIs, chatbots, agents), RAG knowledge bases, REST API development, web scraping and data pipelines, and fixing tricky Java bugs. I have shipped healthcare lab systems, environmental-monitoring cloud platforms, and an international airport passenger app. Clear scope, fixed milestones, daily updates, and clean documented code. Tell me what you need - I will reply within one day.
FAQ
Which LLM providers do you support?
OpenAI, Anthropic Claude, DeepSeek and self-hosted open-source models. If your provider has an API, I can integrate it.
Do I need to have an existing application?
Ideally yes - I integrate LLMs into your existing Java or Spring Boot app. If you are starting from scratch, message me and we will scope a full build instead.
Will my data be used to train AI models?
No. OpenAI and Anthropic do not train on API traffic, and I can configure zero-retention options for sensitive workloads.
What about API costs?
You pay the LLM provider directly with your own API key, so you stay in control of costs. I will help you estimate usage per feature before we start.
Can you deploy the solution for us?
Yes. The Premium package includes deployment support (Docker or your cloud), with full handover documentation for your team.
