SonicWall

Software Dev Principal Engineer - DPI & SSL/TLS Security

SonicWall
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13 hours ago
Pune, IndiaStaff+

Responsibilities

  • Architect and evolve a multi-gigabit, stream-based Layer 7 DPI engine for NGFW appliances.
  • Lead the SSL/TLS decryption pipeline for inspecting encrypted traffic with security services.
  • Define integration between decryption and Anti-Virus, IPS, Anti-Spyware, Content Filtering, and Application Control engines.
  • Drive hardware acceleration for cryptographic and pattern-matching workloads.
  • Champion security hardening and compliance with modern cryptographic standards.
  • Own architecture reviews, technical specifications, performance benchmarks, and mentorship of senior engineers.

Requirements

  • 10+ years of C/C++ experience in high-performance networking, packet processing, or L7 security engines on NGFW or carrier-grade platforms.
  • Strong expertise in SSL/TLS internals, including TLS 1.2/1.3, PKI, certificate management, and OpenSSL/BoringSSL.
  • Hands-on experience building or optimizing DPI or security service engines on commercial NGFW platforms.
  • Proficiency in multi-core, low-latency C/C++ programming, including concurrency, memory optimization, and zero-copy techniques.
  • Strong debugging and profiling skills in complex, multi-threaded networking environments.
  • Familiarity with NGFW security services from leading vendors is preferred.
  • Exposure to HTTP/3, QUIC, DoH, and ECH/ESNI is preferred.
  • Experience tuning virtual or cloud firewall performance is preferred.
  • Hands-on experience with Spirent, IXIA, or TRex is preferred.

Benefits

  • Hybrid work arrangement in Pune.
  • Equal opportunity employment in a diverse work environment.

Tech Stack

Categories

SonicWall

About SonicWall

1,001-5,000 employees

SonicWall builds network and cloud security products for SMBs, enterprises, and the public sector, including next‑gen firewalls, secure remote access, email and endpoint security, and threat intelligence services. The company sells hardware plus subscription-based security services, primarily through a global channel of MSPs/MSSPs and resellers. Founded in 1991 and headquartered in Milpitas, California, SonicWall is privately held under Seahawk Holdings and was formerly part of Dell.

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