Software Dev Principal Engineer - DPI & SSL/TLS Security
Core
Lead architecture and development of Deep Packet Inspection (DPI) and SSL/TLS Decryption engines for NGFW appliances and virtual firewalls, enabling high-throughput L7 inspection and threat prevention at scale.
Role type
Principal Engineer (High-Performance Networking & Security)
Builds
NGFW appliance and virtual firewall product lines with multi-gigabit stream-based L7 traffic inspection and decryption capabilities.
Domain
Cybersecurity, Network Security, High-Performance Computing
Required skills
C/C++ (10+ years), SSL/TLS internals (TLS 1.2/1.3, PKI, OpenSSL/BoringSSL), Deep Packet Inspection (DPI) engine design, multi-core low-latency programming, hardware acceleration strategy, security hardening, technical architecture, performance benchmarking, mentorship
Preferred skills
NGFW security services familiarity, modern encrypted protocols (HTTP/3, QUIC, DoH, ECH/ESNI), virtual/cloud firewall tuning, network traffic generation tools (Spirent, IXIA, TRex)
Technologies
C/C++, OpenSSL, BoringSSL, NGFW platforms, Spirent, IXIA, TRex
Responsibilities
Architect and evolve the DPI engine for multi-gigabit stream-based L7 traffic inspection; Lead design of the SSL/TLS decryption pipeline; Define integration strategy between decryption layer and downstream security services; Drive hardware acceleration strategy for cryptographic and pattern-matching workloads; Champion security hardening practices; Own architecture reviews, author technical specifications, define performance benchmarks, and mentor senior engineers
Seniority
Principal, hands-on IC with strategy & mentorship
