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dong_mysql_dev

Dongji Yang

@dong_mysql_dev

Senior Java Backend Developer Spring Boot MySQL Optimization Expert

Chine
Chinois
Certaines informations sont présentées en anglais.
À propos de moi
What I deliver: Scalable backend services & RESTful APIs built with Spring Boot / Spring Cloud Slow MySQL query fixes, index optimization, and table sharding for large datasets Legacy Java system refactoring to boost performance and maintainability Distributed issue resolution, third-party integration, and caching solutions I’ve optimized hundreds of production SQL statements, reduced query response time by up to 50%, and delivered stable solutions for enterprise and commercial clients. I focus on clean code, clear communication, and on-time delivery for every project.... Plus d’infos

Compétences

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dong_mysql_dev
Dongji Yang
hors ligne • 
Temps de réponse moyen de 1 heure

Voir mes services

Aide / Consultation
I will do mysql performance tuning, fix slow queries and speed up database
De45 $US / projetPlus de détails

Expérience professionnelle

Chengdu_Wuhou Museum

Chengdu Wuhou Museum

Temps plein • 4 yrs 10 mos

Senior Java Backend Developer

Jul 2024 - Apr 2026 • 1 yr 9 mos

Served as core developer for internal enterprise management systems, leading backend development, MySQL performance tuning, and system deployment. Resolved hundreds of production slow queries, built distributed caching and message queue solutions, and supported high-concurrency multi-terminal data interaction.

Backend Developer (Full-Stack Focused)

May 2021 - Jun 2024 • 3 yrs 1 mo

Built and maintained enterprise-grade web systems with Spring Boot and MySQL. Optimized database indexes and slow queries, implemented table sharding for large datasets, and improved query efficiency by over 45%. Designed microservice architectures and integrated third-party business interfaces to ensure system stability and data consistency.