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lambert
@lambertcheng
Fullstack Java Developer and AI Agent Engineer and 9 Years Experience
China
English, Chinese, Japanese
About me
Senior Software Engineer with 9 years in enterprise Java, cloud architecture, and AI.
WHAT I DO:
- Java, Spring Boot, Spring Cloud, REST APIs, microservices
- AI Agent Development with LangChain, Dify, n8n, RAG
- MySQL, PostgreSQL, MongoDB, Redis, Elasticsearch
- DevOps with Docker, Kubernetes, Jenkins, Ansible
WHY ME:
- Led teams at SF Express and DiDi
- 15K QPS production systems
- AI Agents in production environments
- Invention patents in AI and Cloud Computing
Clean code, daily updates, on-time delivery, 7-day free support. Message me now!
Skills
lambert
Offline •
Average response time: 1 hour
See my services
CI/CD
I will dockerize your app and set up ci cd pipeline with kubernetes
Full Stack Web Applications
I will develop rest apis and web apps using java and spring boot
Work experience
Senior Software Engineer
Alibaba • Full-time
May 2022 - Present • 4 yrs 2 mos
Technical lead responsible for enterprise platform architecture, AI integration, and DevOps infrastructure. Key achievements: - Architected and delivered 20+ enterprise cloud management projects - Built AI Agents using Dify, LangChain, and RAG architecture for smart inspection and knowledge base - Designed CI/CD pipelines with Jenkins, Docker, and Kubernetes - Led engineering teams of 13 to 65 members across multiple product lines - Filed 5 invention patents in AI, Cloud Computing, and AIOps in 2025 - Managed security compliance projects valued at over 8 million USD
Software Engineer
DiDi • Full-time
Jan 2017 - May 2022 • 5 yrs 4 mos
Core developer and team lead for high-traffic logistics and transportation platforms. Key achievements: - Developed order management, driver matching, and billing systems serving 450K+ users - Built cloud-native microservices with Spring Cloud, Kafka, RocketMQ, and Elasticsearch - Handled 15K+ QPS during peak events such as Double 11 and 618 shopping festivals - Designed distributed data synchronization middleware - Led a team of 25 engineers with full ownership of architecture and delivery
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fubejin
Japan
Very professional and reliable freelancer. Communication was smooth and he was very responsive throughout. Delivery was fast and everything was handled well. I’m satisfied with the result and would definitely recommend him.
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