Senior Software Engineer

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.

We are looking for a highly skilled Senior Software Engineer to develop and maintain SonicWall security service software and support backend data center operations. This role focuses on building high-performance, scalable, and secure systems that power next-generation cybersecurity solutions.

The ideal candidate has strong expertise in C/C++ systems development, networking or cybersecurity technologies, and deep knowledge of operating system internals and performance optimization. You will collaborate with cross-functional engineering teams to design reliable, low-latency services while contributing to technical innovation across the organization.

Key Responsibilities

• Design, develop, and maintain SonicWall security service software.

• Support operation, monitoring, and maintenance of SonicWall backend data center infrastructure.

• Build high-performance, multi-threaded systems optimized for scalability and low latency.

• Apply strong computer science fundamentals including data structures, algorithms, networking, and computer security principles.

• Analyze, debug, and resolve complex system and performance issues.

• Optimize system performance, memory utilization, and concurrency handling.

• Collaborate with cross-functional teams across engineering, QA, and operations.

• Contribute to system architecture discussions and technical design decisions.

Required Qualifications

• 7+ years of experience in C/C++ systems software development.

• Strong expertise in Networking or Cybersecurity concepts, including:

• TCP/IP

• IPsec

• VPN technologies

• Routing and NAT

• Deep Packet Inspection (DPI)

• Experience designing multi-threaded, high-performance, low-latency systems.

• Strong understanding of:

• Operating system internals

• Memory management

• Concurrency and synchronization

• Networking stacks

• Excellent analytical, debugging, and performance tuning skills.

• Strong communication skills with the ability to collaborate across teams.

Preferred Qualifications

• Experience with DPDK, NetFilter, or equivalent packet-processing frameworks.

• Experience working on security appliances, firewalls, or network infrastructure products.

• Exposure to large-scale backend or data center environments.

Education & Experience

• Bachelor’s degree with 7+ years of relevant experience, OR

• Master’s degree with 5+ years of experience, OR

• PhD with 3+ years of experience, OR

• Equivalent practical experience.

Preferred Degree: Computer Science, Engineering, or related technical field.

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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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