I'm Fichil.
Expert Backend & DevOps Troubleshooter
I specialize in resolving mission-critical production issues: from Nginx 502s and API timeouts to complex SAP/WMS integrations.
Production Down?
What I Solve
I focus on real-world reliability. If your system is failing under pressure, I provide:
- Infrastructure Rescue: Nginx, Linux kernel tuning, and VPS recovery.
- Backend Debugging: Java/Spring production profiling and API error tracing.
- Cloud Automation: Fixing broken Docker/CI/CD pipelines.
- Enterprise Bridge: SAP, WMS, and TMS integration troubleshooting.
- Linux / Nginx Tuning
- Java / Spring Boot
- Docker / Kubernetes
- Enterprise API Integration
- Performance Profiling
Case Studies
Nginx
Linux
Security
Restoring VPS Reachability
Fixed a critical 'Connection Refused' error by reconfiguring Nginx listeners and firewall chains.
SAP
API
WMS
Enterprise API Integration
Resolved a multi-day SAP/WMS synchronization failure in a production warehouse environment.
Urgent Support
Email me with your system logs or error descriptions. I usually respond within 4 hours for production-stop issues.