QA Engineer (DPI) - Contract
Core
Develop and execute automated test plans for edge security products, specifically validating Deep Packet Inspection (DPI) engines and secure network traffic inspection.
Role type
SDET/Dev-QA Engineer (Network Security)
Builds
Edge security products and network traffic inspection tools
Domain
Network security, Deep Packet Inspection, IoT/Wi-Fi edge devices
Deliverable
production ML models | product features
Required skills
Python for test automation, TCP/IP/UDP/DNS/TLS/HTTP/NAT/VPN protocols, packet sniffing (Wireshark), PCAP analysis, firewall behavior, SSL inspection, debugging complex architectures
Preferred skills
nDPI/Suricata/Zeek familiarity, MITM techniques, threat simulation frameworks, IoT/Wi-Fi edge device testing (OpenWRT/embedded Linux), cloud-native networking testing
Technologies
nDPI, Suricata, Zeek, Wireshark, OpenWRT, embedded Linux
Responsibilities
Design automated test cases for DPI engines; Test real-world client/router/cloud interactions for L2–L7 network behavior; Validate TLS/SSL traffic inspection; Write tests for malformed packets and intrusion detection patterns; Simulate security vulnerabilities (DNS tunneling, spoofing); Partner with firmware developers to validate access control logic
Seniority
Mid-level, hands-on IC