System Maintenance • Architecture Optimization • Long-Term Remote Collaboration
Helping businesses maintain, optimize, and scale existing systems.
My name is Wang Shiqiang, a backend engineer with over 15 years of experience in web application development.
I specialize in:
- PHP & Go Development
- Enterprise System Architecture
- Linux Server Administration
- Performance Optimization
- Production Troubleshooting
- Long-Term Technical Support
If your team is facing any of the following challenges:
✅ No dedicated engineer maintaining the system
✅ Original developers have left the project
✅ Slow websites or APIs
✅ Frequent production incidents
✅ Increasing technical debt
✅ Lack of long-term technical support
I can help stabilize, optimize, and maintain your systems efficiently.
Why Work With Me?
15+ Years of Industry Experience
Extensive experience developing and maintaining enterprise applications, SaaS platforms, e-commerce systems, and business management software.
Strong Maintenance & Troubleshooting Expertise
Many developers focus on building new systems.
I specialize in:
- Taking over existing projects
- Maintaining production systems
- Troubleshooting complex issues
- Performance optimization
- Reducing technical debt
Technical Blogging Since 2013
Maintaining a technical blog for more than a decade.
Published:
- 1,000+ Chinese articles
- 900+ English articles
Topics include:
- PHP
- Go
- Linux
- Docker
- Databases
- Networking
- DevOps
- AI Tools
Continuous technical writing reflects both practical experience and long-term commitment to the profession.
Long-Term Remote Collaboration
Comfortable working with distributed teams and providing reliable long-term technical support.
Services
Technical Consulting
Suitable for:
- Startups
- Small and Medium Businesses
- Independent Developers
Services include:
- Architecture Review
- Technology Selection
- System Upgrade Planning
- Technical Assessments
- Development Best Practices
System Maintenance & Ongoing Support
Applicable to:
- PHP Applications
- Go Applications
- SaaS Platforms
- ERP / CRM Systems
- E-commerce Platforms
- Internal Business Systems
Services include:
- Maintenance
- Feature Enhancements
- Bug Fixes
- Database Administration
- Server Management
- Reliability Improvements
Performance Optimization & Troubleshooting
For issues such as:
- Slow Websites
- Slow APIs
- Database Bottlenecks
- High CPU Usage
- High Memory Consumption
- Application Crashes
Services include:
- Root Cause Analysis
- Log Investigation
- Performance Tuning
- Architecture Recommendations
Linux Administration & DevOps Support
Including:
- Linux Server Management
- Nginx Optimization
- MySQL & Redis Administration
- Docker Deployment
- Jenkins & GitLab CI/CD
- Rancher Management
Networking & Overseas Infrastructure Support
Extensive experience working with VPS providers and complex network environments.
Including:
- WireGuard Deployment
- Clash & sing-box Configuration
- DNS Troubleshooting
- VPS Network Optimization
- AI Tool Connectivity Support
Project Experience
Cross-Border E-Commerce SaaS Platform
- Product Management
- Order Management
- Multi-Language Support
- Multi-Currency Support
- ERP Integration
Sports Data Platform
- Real-Time Data Processing
- Push Notification Systems
- High-Concurrency Optimization
- Administration Platforms
Broadcasting & Media Industry
- Command & Dispatch Systems
- GIS Visualization Platforms
- Private Cloud Deployment
Enterprise Systems
Extensive experience maintaining and developing:
- ERP Systems
- CRM Systems
- OA Systems
- Educational Platforms
- Corporate Portals
Technical Blog
Since 2013, I have continuously maintained a technical blog documenting real-world engineering experience.
Published:
- 1,000+ original technical articles
The blog serves as both a knowledge base and a long-term record of technical expertise.
Collaboration Options
Available for:
✅ Technical Consulting
✅ Long-Term Maintenance
✅ Remote Part-Time Collaboration
✅ Project-Based Support
✅ Architecture Reviews
Industries include:
SaaS, E-Commerce, Education, Manufacturing, Trade, and Internet Businesses.
Contact
If you need assistance with:
✅ PHP or Go Development
✅ System Maintenance
✅ Architecture Design
✅ Performance Optimization
✅ Linux Administration
✅ Networking & Infrastructure Support
Feel free to get in touch.
Email: shuijingwanwq@gmail.com
Telegram: @shuijingwan
GitHub: https://github.com/shuijingwan
Response time is usually within 24 hours.