C

Cisco

Makes networking gear and security software

Principal Software Engineer

Full-Time
$250.6k - $362.6k+ Restricted stock units + Annual bonus
Expert
Bachelor's, Master's
Milpitas, CA, USA
In Person
Software EngineeringSystems Software Engineering

About the job

Requirements
  • A bachelor's degree in Electrical Engineering, Computer Science, or a related field with 15 or more years of experience, or a master's degree with 12 or more years of experience.
  • Experience programming in C, C++, and Python for embedded systems.
  • Experience in hardware and device driver development, including Linux hardware bring-up, multithreading, event handling, and state machine implementation.
  • Experience with Sonic, ONIE, BMC, IPMI, and/or Redfish technologies.
  • Experience developing, debugging, and validating embedded systems using protocols such as I2C, SPI, UART, PCIe, and GPIO.
Responsibilities
  • Architect and develop BIOS, BSP, and diagnostics for core and edge routing products.
  • Design, develop, and test device drivers for FPGA and networking peripherals.
  • Develop and execute software test plans.
  • Collaborate with cross-functional teams to debug prototypes and validate software.
  • Develop software, hardware, and technology solutions for the product portfolio.
  • Provide expert technical consultation internally and externally.
  • Shape technology and industry trends to support competitive advantage and long-term business impact.
Desired Qualifications
  • Proficiency with kernel debugging tools such as GDB and KGDB.
  • Experience leading board bring-up, validation, and debugging of embedded systems.
  • Ability to develop software from concept through delivery for large-scale, high-bandwidth systems.
  • Strong troubleshooting skills for software defects spanning kernel modules through applications.
  • Experience in collaborative system design, specification writing, and requirements review.
  • Commitment to quality, mentoring, and continuous learning in networking, optics, and embedded systems.
  • Experience and knowledge in AI/ML, Layer 2/3 network protocols, network processors, optical networking, secure boot, open-source tools, CMIS, and SFF standards such as SFP and QSFP.

About the company

Cisco makes the switches and routers that connect offices, data centers, and cloud services, and it also sells cybersecurity tools and Webex video meetings to businesses and governments. It was one of the first companies to sell routers that let different kinds of computer networks exchange data, and in 2000 it briefly became the world's most valuable company. Customers run its network gear, from Wi-Fi access points to AI data center systems, with Cisco software that sets up and secures the network, while its Splunk unit searches computer logs to catch outages and attacks. Cisco earns money from hardware sales, software subscriptions, and support contracts. It was founded in 1984 and is based in San Jose, California.

Company Size

10,001+

Company Stage

IPO

Headquarters

San Jose, California

Founded

1984

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Simplify's Take

What believers are saying

  • Cloud giants fuel growth: they ordered $9.3 billion of Cisco's AI gear in the year to July 2026, up 4.5-fold.
  • Stock awards gained value: Cisco shares rose 63% in the year to October 2026, four times the S&P 500's 15%.
  • Signed deals steady the business: Cisco had $46.7 billion of contracted sales still to deliver in July 2026, up 7%.

What critics are saying

  • Record sales didn't stop layoffs: Cisco cut nearly 4,000 jobs, just under 5% of staff, in May 2026.
  • Rivals lead in data center switches: in the June 2026 quarter, Nvidia held 20.4%, Arista 18.7% and Cisco 18.2%.
  • Hardware-heavy AI growth squeezes profit: Cisco's gross margin fell to 66.3% from 68.4% in the July 2026 quarter.

What makes Cisco unique

  • Cisco still sells the most network switches: it took 28.7% of worldwide switch sales in the June 2026 quarter.
  • Cisco designs its own networking chips: Microsoft and Alibaba signed on early for its Silicon One P200, launched October 2025.
  • Cisco trains future network engineers: its Networking Academy has taught over 28 million learners in 195 countries since 1997.

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Benefits

  • Paid Vacation
  • Hybrid Work Options
  • Flexible Work Hours
  • Professional Development Budget

Growth & Insights and Company News

6 month growth

-1%

1 year growth

0%

2 year growth

0%
Bloomberg Law
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South Korean AI chip startup FuriosaAI has quadrupled its valuation to $2.9 billion after a new funding round, as it seeks to challenge Nvidia. The Seoul-based company said on Thursday it raised $620 million in a Series D round. US-based Infinitum Partners was among the investors. South Korea's National Growth Fund contributed $280 million, and international investors added $110 million. Backers also include Jericho Capital, Worldline Capital, Singapore's QUDA Capital, and Abu Dhabi-based NeoFort Holding. Investors are looking for alternatives to Nvidia chips, which dominate AI data centres, and want more energy-efficient silicon.

The Register
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Cisco open sources Project Quarry to catch rogue AI agents before the next Hugging Face-style hack

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Yahoo Finance
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Associated Press
Oct 26th, 2026
Presidio integrates Cisco IQ with Presidio Advisor for AI-powered lifecycle management

Presidio, a global digital services and AI solutions provider, has integrated Cisco IQ with its Presidio Advisor platform. The move combines Cisco's AI-powered operational intelligence with Presidio's multi-vendor approach to IT lifecycle management. It was announced on October 26, 2026. Using new Cisco IQ open APIs and Role-Based Access Control (RBAC), Presidio Advisor pulls real-time Cisco telemetry, lifecycle milestones, and support data into its platform. This removes manual data extraction. Presidio Advisor merges customer, reseller, and manufacturer data into a single source of truth. Configurable business rules help organisations spot risk, anticipate renewals, forecast spend, and plan technology refreshes. "Our clients are not looking for another asset-management tool," said Kevin Corace, senior vice president, Software and Services Lifecycle, at Presidio. They want a unified view that turns data into action.

PR Newswire
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Cisco released its Splunk State of Observability 2026 report on October 20, 2026, finding that the rush to deploy AI agents is outpacing the ability to monitor them. The survey covered 2,050 IT operations and engineering professionals across 10 countries. Some 87% say monitoring AI is a priority, yet 56% cannot measure AI workload metrics such as large language model response quality. Also, 55% say they cannot control AI costs, and 60% say unexpected billing spikes strain operations more than high baseline costs. Security collaboration is growing: 81% say monitoring AI has increased cooperation between observability and security teams. Among leading organizations, 91% can accurately attribute AI costs, against 69% of non-leaders.