Production
Real production responsibilities from telecom infrastructure where uptime, throughput, and incident response directly matter.
Telecom SMS Firewall
The system is an Erlang-based SMS firewall with advanced SMS monitoring and blocking capabilities.
Reliability is critical because the platform handles SMS traffic for overseas operators. A one-second failure window can impact up to 100,000 messages.
My Responsibilities
- >Implement and maintain testbed environments.
- >Create automation scripts using Python and Bash.
- >Handle Nagios alerts related to firewall nodes and traffic paths.
- >Investigate and resolve customer issues related to firewall behavior.
- >Contribute to firewall GUI improvements and Erlang codebase updates.
What I Operate
- >Distributed firewall nodes
- >Testbed deployments and production deployments
- >Runtime debugging, log analysis, and incident isolation
- >PCAP trace analysis to identify SMS flow issues
- >Monitoring and alert response workflow
Types of Problems I Handle
- >Traffic instability
- >Missing SMS and SMS delivery issues
- >Node failures
- >Deployment safety
- >Runtime investigation
I operate systems that cannot fail.