07/30/2026 updated
100 % available
Senior Java Dev (13 YOE) | Remote Contract Dev|Consultant | Custom Apps | Full Stack
Shantou, Guangdong, China
Only remote
Beijing University of Posts and TelecommunicationsAbout me
13-Yr Java Backend Engineer & Architect. Expert in Spring Cloud microservices & Redis caching. Architected enterprise risk control API gateway from scratch, backing 30M+ RMB transactions. Cross-industry: gov LLM analytics, telecom big data, crawlers, quant backtesting.
AI AgentsJava Development ToolsMyBatisWeb Application DevelopmentDocker ContainerSpring CloudSpring BootGitFull Stack DevelopmentTechnical ConsultancyJenkinsMicroservices
（note:Senior Java developer working 100% remotely from China with no EU/UK tax residency or physical presence, so no local employment, social security, or IR35-equivalent obligations arise for your organisation. I offer GDPR-compliant direct B2B contracting (with SCCs) or EOR onboarding via Deel/Remote — whichever fits your compliance framework best.Development progress is kept fully synchronized and transparent through defined milestones, frequent Git commits, daily reports, and weekly updates.）
1.Microservices ArchitectureBuild
highly available distributed systems based on the Spring Cloud ecosystem. Proficient in Nacos (service registration & configuration center), Sentinel (circuit breaking, rate limiting & service degradation), and Spring Cloud Gateway (unified API gateway & authentication).
2.Core Backend Development
Expert in Spring, Spring Boot, and Spring MVC with solid mastery of RESTful API design standards. Automate API documentation via Swagger; familiar with the Dubbo RPC framework for distributed services.
3.Databases & Middleware
Redis: Applied for caching acceleration and distributed lock implementation, with complete solutions for cache breakdown, penetration, and avalanche prevention.RabbitMQ: Master message reliability mechanisms with hands-on experience in message deduplication and backlog troubleshooting.MySQL: Skilled in execution plan analysis and index optimization, with practical database sharding experience via ShardingSphere.
4.DevOps & Testing Tools
Proficient in Docker for image building, service orchestration, and network configuration. Experienced in Jenkins for automated build/test pipelines; use HAProxy for TCP/HTTP traffic distribution and JMeter for performance load testing.
5.JVM Performance Tuning
Familiar with core JVM principles including heap memory structure and garbage collection algorithms. Skilled in troubleshooting and tuning with tools like jconsole, jstat, and jstack.
6.Big Data & AI Integration
Familiar with the Hadoop ecosystem (Hive, HBase, Flume, Sqoop) for cross-team data collaboration. Hands-on integration experience with LLM platforms (BISHENG), mastering prompt engineering and AI workflow orchestration.
Experience
Professional experience10+ years
Freelancer since2026
Languages
ChineseNative speakerGermanGoodEnglishGood
Project history
Senior Java Engineer
Served in this company for nearly 9 years, experiencing a complete technical evolution from big data collection and backend microservices architecture to AI Agent applications. Key milestones:
AI Agents & Gov LLM System (Recent 2 Years)
AI Legal Assistant: Led web interaction development and Agent workflow construction, automating complex business logic.
Gov Cloud Brain LLM: Developed web features and designed LLM interaction pipelines, facilitating intelligent government services.
Risk Control Data Interface System (Mid-Term)
Spearheaded core R&D for 2 major iterative releases.
Handled requirement analysis, API design, and system optimization, ensuring efficient and stable data distribution.
Big Data & Data Extraction (Early Career)
Developed big data systems for a Guangdong Mobile branch, focusing on massive data collection.
Leveraged web scraping technologies for crawling, cleaning, and storing multi-source data to support upper-layer analysis.
Tenure: Approx. 2.5 Years
Project Experience: Served as a core developer for the "Guangdong Centralized Alarm System," a telecom-grade project for a major carrier. Primarily responsible for developing the centralized alarm platform for the core/business network, ensuring carrier-grade high availability and the real-time processing of massive alarm data.