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Linux Network Engineer (GRE Traffic Inspection & Filtering)

Philadelphia, PA, US • Posted 16 hours ago • Updated 16 hours ago

Contract Independent

Contract W2

On-site

$50 - $60/hr

Tech3pillars Technologies

Fitment

Dice Job Match Score™

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Job Details

Skills

Linux Network Engineer
networking
GRE
DSCP
Python
Bash
Wireshark
tshark
QoS
Prometheus
Grafana

Summary

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

Location: Philadelphia, PA
Duration: Long term

Description:

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:

6+ 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

Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.

Dice Id: 91135709
Position Id: 8936653
Posted 16 hours ago

Company Info

About Tech3pillars Technologies

T3Pillars is a company committed to maximizing global workforce solutions on behalf of our clients. T3pillar’s deep heritage, proven expertise and insightful market intelligence has secured long-term partnerships with Fortune companies and government clients seeking world-class professional resources.

Providing premium IT services and products is our strength. Our years of experience in the industry have allowed us to acquire knowledge and experience that helped us produce cutting-edge technological solutions.

Choose us as your IT services provider, and we promise to offer you our top tier consulting. Book an appointment today! Give us a call to learn more about our IT company and what we offer.

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