---
title: 'Software Dev Principal Engineer - DPI experience is a must* at SonicWall'
canonical: 'https://feeny.ai/job/software-dev-principal-engineer-dpi-experience-is-a-must-sonicwall-pune-r9m603js364n'
type: 'job'
last_seen: '2026-11-02'
---

# Software Dev Principal Engineer - DPI experience is a must* at SonicWall

- **Company:** SonicWall
- **Location:** Pune, India
- **Posted:** 2026-10-26
- **Last confirmed live:** 2026-11-02
- **Apply:** https://job-boards.greenhouse.io/sonicwall/jobs/8281068

## Job description

For more than 30 years, [SonicWall](https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fc212.net%2Fc%2Flink%2F%3Ft%3D0%26l%3Den%26o%3D4263951-1%26h%3D4126915226%26u%3Dhttps%253A%252F%252Fnam04.safelinks.protection.outlook.com%252F%253Furl%253Dhttps%25253A%25252F%25252Fwww.sonicwall.com%25252F%2526data%253D05%25257C01%25257Cbfitzgerald%252540SonicWall.com%25257Ca6c16b82afc749239f1c08dbda330d94%25257C84fe6f401cbc473083288018b2af88bc%25257C1%25257C0%25257C638343685070400977%25257CUnknown%25257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%25253D%25257C3000%25257C%25257C%25257C%2526sdata%253DQiWUyjNRdG%25252F5Rg2xvGXa1CYzr9V6BNnIgriz33Hk4vw%25253D%2526reserved%253D0%26a%3DSonicWall&data=05%7C02%7CNikhilaR%40SonicWall.com%7Cfd3ae83762384be031d508dcdf3d2ddf%7C84fe6f401cbc473083288018b2af88bc%7C1%7C0%7C638630701067920926%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=GhrhwS9jae1nk4KBGBzKfBcXS7BDBmkWDO87fbJLQxQ%3D&reserved=0) has delivered a partner-first unified cybersecurity portfolio that helps SMBs, MSPs, and IT teams consolidate network security, endpoint security, security service edge (SSE), and threat response across hybrid environments. By bringing connected technology, real-time threat intelligence, automation, and expert services together, SonicWall helps organizations simplify security operations, achieve better security outcomes, and lower total cost of ownership. Backed by a global ecosystem of more than 17,000 partners, SonicWall delivers enterprise-grade protection built for SMB and mid-market realities.

For more information, visit [www.sonicwall.com](https://www.sonicwall.com/) or follow us on [X,](https://x.com/SonicWALL) [LinkedIn](https://www.linkedin.com/company/sonicwall), [Facebook](https://www.facebook.com/SonicWall/), and [Instagram.](https://www.instagram.com/sonicwall_inc/)

## About the Role

We are seeking a Principal Engineer to lead the architecture and development of Deep Packet Inspection (DPI) and SSL/TLS Decryption engines for our NGFW appliance and virtual firewall product lines. You will drive the design of high-throughput L7 inspection and threat prevention capabilities — including Anti-Virus, Anti-Spyware, IPS, Content Filtering, and Application Control — at scale across 10G–100G+ deployments.

## Responsibilities

- Architect and evolve the DPI engine for multi-gigabit stream-based L7 traffic inspection on NGFW appliances.
- Lead design of the SSL/TLS decryption pipeline to enable security services inspection over encrypted traffic.
- Define integration strategy between the decryption layer and downstream security services (AV, IPS, Anti-Spyware, Content Filtering, Application Control).
- Drive hardware acceleration strategy for cryptographic and pattern-matching workloads.
- Champion security hardening practices and ensure compliance with modern cryptographic standards.
- Own architecture reviews, author technical specifications, define performance benchmarks, and mentor 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 — TLS 1.2/1.3, PKI, certificate management, and OpenSSL/BoringSSL.
- Hands-on experience building or optimizing DPI or security service engines (AV, IPS, Content Filtering, or Application Control) on commercial NGFW platforms.
- Proficiency in multi-core, low-latency C/C++ programming — concurrency, memory optimization, and zero-copy techniques.
- Strong debugging and profiling skills across complex, multi-threaded networking environments.

## Nice to Have

- Familiarity with NGFW security services from leading industry vendors.
- Exposure to modern encrypted protocol standards (HTTP/3, QUIC, DoH, ECH/ESNI).
- Experience with virtual or cloud firewall performance tuning.
- Hands-on with network traffic generation and testing tools (Spirent, IXIA, TRex).

## #LI-DS9

#LI-Pune

#LI-Hybrid 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.

[Applicant Privacy Notice](https://www.sonicwall.com/legal/job-applicant-privacy-notice/)

## About SonicWall

## Company Overview
- **One-liner**: SonicWall delivers advanced, cost‑effective cybersecurity solutions for organizations of all sizes, powered by real‑time threat intelligence and a partner‑first platform.
- **Entity Type**: Private (owned by Francisco Partners; no public ticker)
- **Headquarters**: Milpitas, California, USA
- **Founded**: 1991
- **Founders**: Not publicly listed (company was originally founded as SonicWALL, Inc.)

## Core Business
- **Primary industries**: Computer and Network Security, Cybersecurity
- **Target customers**: SMBs, mid‑market enterprises, government agencies, channel partners (10,000+ global partners)
- **Mission**: To design and develop advanced, cost‑effective cybersecurity solutions built on superior threat intelligence that evolves with partners’ and customers’ needs.
- **Purpose**: To protect and empower the well‑being of organizations online.

## Products & Services
- **Next‑Generation Firewalls (NGFW)**: Hardware and virtual firewalls with integrated threat prevention, intrusion detection, and application control.
- **Cloud Secure Edge (CSE) / ZTNA**: Zero‑trust network access solutions for secure remote access.
- **Endpoint Protection**: Anti‑virus, anti‑malware, and advanced threat protection for endpoints.
- **SonicWall Unified Management**: Multi‑tenant architecture for centralized policy and device management.
- **Managed Protection Bundle**: Subscription service backed by SonicWall’s threat research and 24/7 SOC.
- **SAMI (SonicWall AI)**: Embedded AI to simplify operations, resolve issues faster, and reduce noise.
- **Global Response Intelligent Defense (GRID) Threat Network**: Real‑time threat intelligence network powering all products.

## Market Standing
- **Valuation**: Not disclosed (private company)
- **Annual Revenue**: Approximately $480 M (estimated; source: LinkedIn)
- **Total Funding**: Not applicable (private, owned by Francisco Partners; previously acquired by Dell and later taken private)
- **Notable Investors/Partners**: Francisco Partners (parent company); 10,000+ channel partners; 1.1 million security sensors deployed in 215 countries
- **Growth Signals**: 
  - Active job postings surged +92.7% monthly and +172.4% quarterly (LinkedIn data)
  - Recent introduction of SAMI AI and new Managed Protection bundle
  - Expanding Cloud Secure Edge (ZTNA) offerings
  - Headcount of ~1,241 (LinkedIn) to ~1,832 (Built In) – conflicting reports; both cited below

## Competitive Advantages
- **Partner‑first ecosystem**: Strong channel partner network (10,000+) gives broad reach and loyalty.
- **30+ years of cybersecurity expertise**: Deep domain knowledge and a dedicated threat research center (GRID).
- **Real‑time, multi‑vector protection**: Covers network, cloud, endpoint, and remote access in a unified platform.
- **Cost‑effective for SMBs**: Positioned as affordable yet enterprise‑grade security.
- **Embedded AI (SAMI)**: Differentiates by simplifying operations and reducing alert fatigue.

## Strategic Focus
- **AI‑driven automation**: Expanding SAMI to automate threat response and streamline management.
- **Cloud‑first security**: Growing Cloud Secure Edge (ZTNA) and managed services for hybrid/remote work.
- **Partner enablement**: Strengthening tools and programs for channel partners.
- **Global expansion**: Operating in 46 countries; hiring aggressively in India, US, Canada, and Europe.

## Why Work Here
- **Culture**: Collaborative, innovative, and fun environment with a “never alone” philosophy. Employee Resource Groups (ERGs) foster inclusion and belonging.
- **Remote/Hybrid Policy**: Mix of remote, in‑office, and hybrid roles; many positions are fully remote (US, Canada, Europe, India).
- **Wellness & Benefits**: Mental and physical wellness programs, paid time off, ample holidays, work‑life balance, and competitive compensation.
- **Recognition**: Awards tied to core values; outstanding performance is celebrated.
- **Engineering Culture**: Heavy focus on networking, security, and AI; teams in Pune, Bengaluru, and US offices. Strong learning and development opportunities.
- **Social Responsibility**: Community engagement, fundraising for nonprofits, and partnerships to access untapped talent pools.

## Sources
1. [SonicWall Careers](https://www.sonicwall.com/careers)
2. [SonicWall Website](https://www.sonicwall.com/)
3. [SonicWall Jobs on Greenhouse](https://job-boards.greenhouse.io/sonicwall)
4. [LinkedIn Company Page](https://www.linkedin.com/company/sonicwall)
5. [Built In SonicWall Profile](https://builtin.com/company/sonicwall)

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