l
liuweisoft

Wei Liu

@liuweisoft

From custom scripts to full software I code solutions for any technical challeng

China
Chinese
About me
Hi! I'm a veteran software engineer proficient in Java and PHP. I specialize in building custom software, backend automation scripts, standalone tools, and efficient data processing systems. Instead of generic websites, I focus on solving your unique, real-world technical challenges. I can help you with desktop apps, API integrations, data transformations, workflow automation, and background services. No project is too unique—if it can be coded, I can build it. Message me with your requirements, and let's create a tailored, high-performance solution for you!... Read more

Skills

l
liuweisoft
Wei Liu
Offline • 
Average response time: 1 hour

See my services

Convert Files
I will code custom scripts and backend software for any technical challenge
From$10 / projectMore details

Portfolio

Work experience

China Analysis

Full-time • 9 yrs 7 mos

Ke.com (Beijing) Technology Co., Ltd. | Java Developer

Jul 2018 - Jul 2025 • 7 yrs

August 2018 – Present Core Responsibilities: Focused on Home Decoration and House Rental business lines, responsible for core system architecture iteration, microservices transformation and performance optimization Led technical problem-solving for complex issues including high-concurrency scenarios, data consistency and cross-service communication Managed development team, supervised project progress, code quality and ensured stable business implementation Continuously improved system capacity, microservices architecture flexibility and business service capabilities Home Decoration Business: Led architecture optimization of labor cost settlement system covering intelligent calculation, multi-party settlement, payment, debt control and deposit management Resolved complex issues including high-concurrency settlement exceptions, data consistency deviations and cross-service timeout Optimized MySQL database structure and index logic, improving query and calculation response speed Completed reconstruction and microservices transformation of two legacy settlement systems, handling 1.8 million lines of code and 200 data tables Managed development team, requirements decomposition, scheduling and quality control House Rental Platform Business: Responsible for core housing business development and microservices adaptation for C-end platform Implemented asynchronous data synchronization using Kafka for real-time housing information updates Optimized search logic and sorting algorithms using Elasticsearch, improving user experience Completed microservices transformation of C-end API services, solving timeout and avalanche issues Implemented Redis caching, rate limiting and circuit breaking to enhance system stability Key Achievements: Promoted from P6 to P7 through internal professional evaluation Consistently received excellent performance ratings for multiple consecutive years Identified and fixed business opportunity loopholes through data analysis, contributing approximate

Golden Melon Seed Technology Development (Beijing) Co., Ltd. | Senior PHP Engineer

Dec 2015 - Jul 2018 • 2 yrs 7 mos

Developed public components including message queue, short URL service, code package management and PDF generation Built company-wide log platform using Slim + ELK for log collection, retrieval and analysis Developed configuration center using Etcd + Confd + Laravel, simplifying configuration management Implemented email archiving system with Laravel + MySQL + ElasticSearch + Ceph, handling 150,000 emails daily Developed account management system and internal employee management platform