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Principal Security Researcher (Decoder)

United States, Santa Clara Employment contract 162700.00 - 263175.00 USD / Year · Job Posted June 30, 2026
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Job Responsibility

  • Research networking protocols and related application networking behavior
  • Research file types and file properties
  • Research and provide defense mechanisms against popular protocol/firewall evasions
  • Develop protocol and file decoders, and integrate the detection solutions with Palo Alto Networks products
  • Build common services to support various network security services
  • Develop internal tools to monitor and support the cyber security products
  • Cross-team collaboration, discover and integrate advanced cybersecurity features to inline product solutions

Requirements

  • Strong programming and debugging skills, experience coding in Go required
  • Strong understanding of Go concurrency, memory optimization, and scalable system design
  • Excellent understanding of L4-7 networking protocols such as HTTP, TLS, SMTP, FTP, Websocket, GRPC, TCP/IP, etc.
  • Experience with packet processing, stream reassembly, protocol parsing, and traffic analysis systems
  • Experience in analyzing network traffic using tools like Wireshark, Fiddler, tcpdump etc.
  • Familiar with Linux/Unix development environment
  • Team player, and good communication skills to work with cross-functional groups
  • BS/MS in Computer Science or Electrical Engineering or equivalent Military experience
  • 5+ years industry experience

Nice to have

  • Knowledge and experience of next generation firewall and cyber security services
  • Understanding of protocol evasion techniques, fragmentation, and traffic obfuscation
  • Experience with Suricata, Zeek, eBPF, DPDK, or similar technologies
  • Experience with pattern matching engines, rule-based detection systems, or DFA/NFA concepts
  • Familiarity with performance profiling tools such as pprof, perf, or valgrind
  • Experience applying AI techniques to traffic classification, protocol identification, or anomaly detection is a big plus

What we offer

  • Restricted stock units
  • Bonus
  • Employee benefits may be found at the provided link

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