Linux Network Engineer

Philadelphia, PA - USA

Monthly Salary: Not Disclosed

Posted on: 8 days ago

Vacancies: 1 Vacancy

Job Summary

Position: Linux Network Engineer (GRE Traffic Inspection & Filtering)

Location : Philadelphia (No Remote)

We are seeking an experienced Linux Network Engineer with strong scripting and packet analysis skills to support deep inspection of GRE tunnel traffic in a large scale production network. The engineer will develop automation to extract filter and analyze encapsulated packets and support operational troubleshooting for GRE related issues.

This role requires expertise in Linux networking GRE/ERSPAN packet capture filtering frameworks (nftables/iptables tc) and scripting (Python/Bash).

Must have:

8 years Linux Systems or Network Engineering experience

Experience working with GRE tunnels on Linux

Strong packet capture and analysis skills using tcpdump Wireshark/tshark

Proficient with Bash and Python scripting

Strong knowledge of iproute2 nftables/iptables and tc

Solid understanding of L2 L4 protocols DSCP/QoS and MTU mechanics

Job Description:

Develop Python/Bash scripts to inspect GRE tunnels and decapsulate/analyze encapsulated payloads

Build automated capture flows using tcpdump tshark and libpcap

Implement payload-aware filtering logic using nftables/iptables tc (flower/clsact) and eBPF/XDP

Troubleshoot GRE tunnel health encapsulation/decapsulation errors MTU/fragmentation issues and offload behavior

Create and maintain operational runbooks and documentation

Integrate capture data and metrics with observability platforms (Prometheus Grafana ELK)

Participate in on-call rotations as needed

Position: Linux Network Engineer (GRE Traffic Inspection & Filtering) Location : Philadelphia (No Remote) We are seeking an experienced Linux Network Engineer with strong scripting and packet analysis skills to support deep inspection of GRE tunnel traffic in a large scale production network. ...