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I will java spring boot rest API mysql redis kafka web

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huang_felix
H
huang_felix
felix
java spring boot rest API mysql redis kafka web
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java spring boot rest API mysql redis kafka web

About this gig

Java Backend Specialist | AI-Powered Enterprise Solutions

I build high-performance backend systems and AI-powered enterprise applications tailored to real business needs.

I focus on scalable, secure, and maintainable backend architecture with a backend-first approach.

Core Expertise:

  • Enterprise Systems: OA, CRM, workflows, RBAC-based management systems
  • AI Knowledge Base (RAG): PDF/OCR processing, hybrid retrieval, source-cited Q&A systems
  • Backend Stack: Java, Spring Boot, MySQL, Redis, Elasticsearch, Spring Cloud
  • System Integration: Third-party APIs, hardware integration, data synchronization

What I can help you with:

  • Custom business system development
  • AI-powered knowledge base / RAG systems
  • Backend performance optimization
  • API & system integration
  • Database design & query optimization

My approach:

Clean architecture, scalable design, and business-driven implementation with long-term maintainability.

  • Website type

    • Business

  • Programming language

    • HTML & CSS
    • Java
    • TypeScript
    • Vue.js

  • Website features

    • Customer support
    • Dashboard
    • User Authentication
    • Admin Panel
    • Other
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Get to know felix

felix

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  • FromChina
  • Member sinceJun 2026
  • Avg. response time1 hour

  • Languages

    English
As a Java backend engineer, I focus on building and optimizing high-performance backend systems with experience in JVM tuning, MySQL optimization (MVCC and indexing), and Redis-based caching and distributed design. I actively improve system efficiency in production, optimizing data processing flows and query performance in high-concurrency scenarios to enhance response time and throughput. Recently, I have been exploring AI Agent systems and RAG architectures, focusing on vector storage, retrieval optimization, and knowledge base performance improvement for real-world applications.

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