1+ months

Technical Leader-Kernel and OS

Cisco Systems Inc.
Milpitas, CA 95035
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Wireless Networking Group (WNG) is the industry leader in enterprise WLAN with a proven track record in building innovative wireless solutions. You will be part of WNG team that is known for innovation and won multiple pioneer awards through years.

As a Senior Technical Leader in this team, you will be developing and supporting software that breathes life into Cisco's Aironet and Catalyst Access Points product line.

In this role, you will have the opportunity to work across teams to craft systems that tackle complex problems for our customers.

You will focus on upgrading/maintaining compilers, upgrading Linux kernel and open source packages, improving debuggability, eliminating technical debt, and supporting developers on build/infrastructure needs. All of these are key to accelerating the release of new products and platforms to customers.

You will be responsible for improving and re-architecting existing components and subsystems, bringing up new boards/products and features to support the growth of access point, in terms of functionality, simplicity, scalability, and availability.

Our projects are driven by technological innovation and developer creativity in addition to market demands, giving you the structure and freedom to pursue projects you are most passionate about.


  • BS in CS + 12 years or MS in CS + 10 years
  • Extensive experience programming in C and/or C++
  • Experience in system design and architecture
  • Strong knowledge of TCP/IP(v4, v6) networks and related protocols
  • Strong competence and experience in Layer 2, Layer 3 networking, QoS, Network and/or application security expertise (L2/L3 firewall, DPI, IDS, IPS)
  • Kernel-level programming experience in the areas of networking, security and memory
  • Expertise in developing/debugging Linux kernel and userspace code
  • Linux kernel networking stack knowledge (Netdevice, SKB, softirq )
  • Linux network device driver/data-path performance expertise
  • Experience with build systems (Yocto, OpenWRT) and Gnu Makefiles
  • Experience with bring up and system boot process using systemd
  • Expertise in Linux shell scripting


  • Prior security experience, particularly in exploit and vulnerability analysis.
  • Prior experience working with low-level code, such as OS kernel, firmware or device drivers.
  • Knowledge of low-level operating system internals (including kernel internals), components, APIs, and design.
  • Understanding multi-threaded concurrent systems development in any of our supported platforms, with an interest to grow skills in all of them.
  • Experience in 802.11 Wi-Fi systems, standards and protocols.
  • Experience with Wi-Fi protocols such as 802.11k, 802.11v, 802.11r
  • SELinux policy development experience

Cisco is an Affirmative Action and Equal Opportunity Employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, gender, sexual orientation, national origin, genetic information, age, disability, veteran status, or any other legally protected basis. Cisco will consider for employment, on a case by case basis, qualified applicants with arrest and conviction records.

We Are Cisco

#WeAreCisco, where each person is unique, but we bring our talents to work as a team and make a difference powering an inclusive future for all.

We embrace digital, and help our customers implement change in their digital businesses. Some may think were old (36 years strong) and only about hardware, but were also a software company. And a security company. We even invented an intuitive network that adapts, predicts, learns and protects. No other company can do what we do you cant put us in a box!

But Digital Transformation is an empty buzz phrase without a culture that allows for innovation, creativity, and yes, even failure (if you learn from it.)

Day to day, we focus on the give and take. We give our best, give our egos a break, and give of ourselves (because giving back is built into our DNA.) We take accountability, bold steps, and take difference to heart. Because without diversity of thought and a dedication to equality for all, there is no moving forward.

So, you have colorful hair? Dont care. Tattoos? Show off your ink. Like polka dots? Thats cool. Pop culture geek? Many of us are. Passion for technology and world changing? Be you, with us!


Posted: 2020-09-25 Expires: 2020-12-26
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Technical Leader-Kernel and OS

Cisco Systems Inc.
Milpitas, CA 95035
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