Raj Kumar

Hi, I’m Raj Kumar – a Senior Technical Support Engineer with 5+ years of international experience in VoIP systems, Linux servers, and cloud automation.

I specialize in:

VoIP: Asterisk, Kamailio, RTPengine, SIP troubleshooting, call flow debugging

Linux: System administration, log analysis, server optimization

Docker & Containers: Setup, debugging, containerized deployments

Automation: Python scripting, Flask tools, Shell scripting, SQL queries

Monitoring & Support: Grafana, AWS EC2, S3, Load Balancers, Geneos, incident response

Key highlights:
✔ Eliminated 95%+ manual work by automating production tasks with Python & Shell
✔ Built a Network Operations Center NOC from scratch, defining monitoring & escalation workflows
✔ Delivered technical mentoring that reduced escalations by 50%
✔ Acted as primary escalation point for US, UK, AU, and Ireland teams

I’m new to freelancing but not new to real world problem solving. My focus is on delivering clear, reliable, and fast solution