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yongchuang_li

Yongchuang Li

@yongchuang_li

Java Developer AI Powered SaaS and API Integration

China
Chinese
About me
I'm a Senior Java Developer and Tech Lead with 6 years of experience. I built meetwise.online, a live AI SaaS product that analyzes meetings, detects conflicts, and quantifies risks. I specialize in: Spring Boot development & Architecture REST API design (Scalable & Secure) AI integration (OpenAI, LangChain4j) Legacy code cleanup & Refactoring Fast Response & Delivery. I treat your code like my own. SPECIAL OFFER FOR FIRST 5 ORDERS: Order any gig and get a FREE Code Review Report ($80 value). I'll review your Java code and give actionable feedback. Let's build something great together.... Read more

Skills

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yongchuang_li
Yongchuang Li
Offline • 

See my services

Help/Consultation
I will clean up legacy java code or review spring boot architecture
From$45 / projectMore details
Help/Consultation
I will fix your java bug fast
From$5 / projectMore details

Portfolio

Work experience

Freelance

Java Developer (AI Applications)

Freelance • Freelance

Oct 2019 - Present • 6 yrs 7 mos

Java developer specializing in backend systems and AI-powered applications. Technical expertise: Designed and developed a production AI SaaS product: https://meetwise.online/ – an intelligent meeting analysis tool that processes natural language conversations, detects conflicts, quantifies business risks, and generates actionable plans Architected and implemented RESTful APIs using Java Spring Boot, handling authentication, data validation, and business logic for web/mobile clients Integrated OpenAI GPT APIs into Java backend services to enable natural language understanding, sentiment analysis, and automated report generation Built scalable backend architectures with Spring Data JPA, Hibernate, and MySQL, optimized for performance and maintainability Proficient with MySQL, Maven, Git, and Docker for database management, build automation, version control, and containerized deployment Collaborated with clients throughout the development lifecycle: requirements analysis, technical design, implementation, testing, and deployment – understanding needs and delivering working products Translated business requirements into clean, maintainable, production-ready applications – turning ideas into reality