Demo

Principal Software Development Engineer

Fortinet
Sunnyvale, CA Full Time
POSTED ON 5/14/2026
AVAILABLE BEFORE 6/12/2026
Job Description

Responsibilities:

  • Troubleshoot complex, system-level, multi-component issues that across multiple layers from kernel to application.
  • Provide system-level optimizations and improvements in the OS to meet the evolving business requirements.
  • Collaborate with our hardware team to support the delivery of our new platform.
  • Maintain the existing software components, OS related.

Requirements:

  • B.S./M.S. with 8 years of relevant experience.
  • Hands-on experience with the Linux kernel, debugging, development, performance tuning, etc.
  • Detailed knowledge of Linux kernel, scheduling, VFS, memory management, I/O, etc.
  • Detailed knowledge of Linux network internals, TCP/IP, netfilter, network driver, etc.
  • Good knowledge of processor architecture, x86, arm, etc.
  • Programming skills in C/bash/python/go.
  • Experience with virtualization/container/cloud technologies is preferred.
  • Strong communication skills and ability to work with cross-function teams.
  • Enthusiasm for system-level techniques.
  • US citizenship is required

The US base salary range for this full-time position is $175,000-$245,000. Fortinet offers employees a variety of benefits, including medical, dental, vision, life and disability insurance, 401(k), 11 paid holidays, vacation time, and sick time as well as a comprehensive leave program.

Wage ranges are based on various factors including the labour market, job type, and job level. Exact salary offers will be determined by factors such as the candidate's subject knowledge, skill level, qualifications, experience, and geographic location.

All roles are eligible to participate in the Fortinet equity program, Bonus eligibility is reviewed at the time of hire and annually at the Company’s discretion.

Why Join Us:

We encourage candidates from all backgrounds and identities to apply. We offer a supportive work environment and a competitive Total Rewards package to support you with your overall health and financial well-being. Embark on a challenging, enjoyable, and rewarding career journey with Fortinet. Join us in bringing solutions that make a meaningful and lasting impact to our 660,000 customers around the globe

#GD

About Us

Fortinet (NASDAQ: FTNT) secures the largest enterprise, service provider, and government organizations around the world. Fortinet empowers its customers with intelligent, seamless protection across the expanding attack surface and the power to take on ever-increasing performance requirements of the borderless network - today and into the future. Only the Fortinet Security Fabric architecture can deliver security without compromise to address the most critical security challenges, whether in networked, application, cloud or mobile environments. Fortinet ranks number one in the most security appliances shipped worldwide and more than 500,000 customers trust Fortinet to protect their businesses.

We are committed to providing reasonable accommodations for all qualified individuals with disabilities. If you require assistance or accommodation due to a disability, please contact us at accommodations@fortinet.com.

Fortinet is an equal opportunity employer. We value diversity in our company, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, age, military/veteran status or any other applicable legally protected characteristics in the location in which the candidate is applying.

Salary : $175,000 - $245,000

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