Senior Principal Software Engineer - Network Security Firewall

Senior Principal Software Engineer (NGFW)

SonicWall is a cybersecurity forerunner with more than 30 years of expertise and is recognized as a leading partner-first company, ensuring our partners and their customers are never alone in the fight against cybercrime. With the ability to build, scale and manage security across the cloud, hybrid and traditional environments in real-time, SonicWall provides relentless security against the most evasive cyberattacks across endless exposure points for increasingly remote, mobile and cloud-enabled users. With its own threat research center, SonicWall can quickly and economically provide purpose-built security solutions to enable any organization—enterprise, government agencies and SMBs—around the world. For more information, visit www.sonicwall.com or follow us on Twitter, LinkedIn, Facebook and Instagram.

 

Responsibilities:

• Design and develop control‑plane and system services for a firewall platform, operating above the networking dataplane (OSI Layer 3+).
• Build and maintain management interfaces and APIs, including configuration frameworks, CLI, secure access (SSH), logging, and diagnostics.
• Implement security services such as authentication (SAML), guest access, SSL/TLS handling, and certificate lifecycle management.
• Develop embedded services for content filtering, including URL categorization, reputation, and rating systems, along with SNMP/telemetry support.
• Lead efforts in  licensing systems, vulnerability remediation, and secure architecture in collaboration with cross‑functional teams.

 

Requirements:

• 12+ years of experience in C/C++ systems development for embedded platforms, security appliances, or network operating systems.
• Strong hands‑on expertise with configuration frameworks, service APIs, CLI development, logging systems, and secure remote access (SSH).
• Solid understanding of L3–L7 networking and security concepts, including SSL/TLS, authentication, identity federation, and PKI.
• Experience with  certificate management, license enforcement frameworks, vulnerability mitigation, and secure coding practices.
• Proficiency in Linux or embedded OS internals, debugging complex system issues, and driving technical discussions across teams.

 

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SonicWall is an equal opportunity employer.  

We are committed to creating a diverse environment and are an equal opportunity employer. All qualified applicants receive consideration for employment without regard to race, color, ethnicity, religion, sex, gender, gender identity and expression, sexual orientation, national origin, disability, age, marital status, veteran status, pregnancy, or any other basis prohibited by applicable law.

At SonicWall, we pride ourselves on recruiting a diverse mix of talented people and providing active security solutions in 100+ countries.

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Experience Level

Senior Level