Principal Software Development Engineer

Principal Software Development Engineer Sunnyvale, CA Full Time Posted by: Fortinet

Posted:

Monday, 26 January 2026

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. 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 Location Sunnyvale, CA, United States of America Industry IT Company Fortinet Contact Click apply Reference JS26489_25303_D5EBA136BCC86BD44A2D9FCDCD41167B Posted Date 1/26/2026 8:36:25 PM