Software Dev Principal Engineer -Wireless Software Development (WLAN)

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Software Dev Principal Engineer - Wireless Software Development (WLAN)

Responsibilities

Lead the integration and optimization of Wireless LAN kernel drivers within high‑performance embedded platforms powering SonicWall Next‑Generation Firewalls (NGFW), ensuring seamless operation, stability, and throughput.

Design, implement, and enhance dataplane components, contributing to fast‑path packet processing and performance‑critical features within the NGFW architecture.

Collaborate closely with cross‑functional teams—including platform, networking, security, and QA—to drive feature development, align on design decisions, and deliver key product milestones.

Own complex debugging, root‑cause analysis, and performance tuning, especially for wireless, networking, and dataplane subsystems affecting system‑level behavior.

Contribute to innovation initiatives, supporting rapid prototyping, evaluation of emerging technologies, and the introduction of next‑generation capabilities into the NGFW product line.

Influence system architecture and long‑term technical strategy, driving improvements in scalability, performance, reliability, and maintainability of WLAN and dataplane components.

Requirements

10+ years of hands‑on experience in C/C++ systems‑level software development, with the ability to build multi‑threaded, high‑performance, low‑latency distributed systems.

Deep expertise in Wireless LAN technologies, including

• Development of Linux kernel WLAN drivers and associated user‑space modules
• Strong working knowledge of IEEE 802.11a/b/g/n/ac/ax standards

Strong networking fundamentals, including

Layer 2 and Layer 3 concepts

VLANs, Access Control Lists (ACLs), SNMP

Implementation and enforcement of wireless security mechanisms such as WPA2/WPA3, IEEE 802.1X, MAC‑based filtering, and guest‑network access policies

Experience with fast‑path dataplane and packet‑processing frameworks, such as DPDK, ODP, or other high‑speed forwarding pipelines is a significant value addition.

Solid understanding of OS internals, including memory management, concurrency models, threading primitives, and network stack internals.

Excellent debugging and performance‑tuning skills, with the ability to analyze and resolve complex system‑level issues.

Strong communication skills and the ability to collaborate across cross‑functional engineering teams.

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