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Staff Engineer - Windows Kernel Driver

Illumio

Illumio

Sunnyvale, CA, USA
USD 192k-230k / year
Posted on Sep 30, 2025

Location

HQ - Sunnyvale (Office)

Employment Type

Full time

Location Type

On-site

Department

Engineering

Compensation

  • $192K – $230K

The pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include responsibilities of the job, education, location, experience, knowledge, skills, abilities, and internal equity, alignment with market data, or applicable laws.

At Illumio we offer a wide range of benefits to our eligible team members. Our benefit programs vary by location and can include Medical, Dental, Vision Coverage – Health and Dependent Savings Accounts – Life and Disability Programs – Paid Parental Leave – Voluntary Benefit Programs – Company Sponsored Wellness Program – Wellness Reimbursement Program - Retirement Savings – Equity Opportunities – Paid time off and Paid Holidays – Employee Incentive Program.

Onwards Together!

Illumio is the leader in ransomware and breach containment, redefining how organizations contain cyberattacks and enable operational resilience. Powered by the Illumio AI Security Graph, our breach containment platform identifies and contains threats across hybrid multi-cloud environments – stopping the spread of attacks before they become disasters.

Recognized as a Leader in the Forrester Wave™ for Microsegmentation, Illumio enables Zero Trust, strengthening cyber resilience for the infrastructure, systems, and organizations that keep the world running.

Our Team's Vision:

Our Engineering team is shaping the future of cybersecurity. We thrive on visionary leadership, autonomy, and ownership, fostering a culture of innovation that propels us forward in the ever-evolving cybersecurity landscape.

As a leader in Zero Trust Segmentation, we are redefining security for a world facing unprecedented cyber threats. You’ll work with a highly scalable SaaS service built using cloud-native technologies while simultaneously shipping the solution on-premises.

Our guiding philosophy in Engineering is to get things right through practicing disciplined engineering, focusing, not cutting corners, and of course having fun while we are at it. We believe in enabling ownership at all levels of the organization and empowering teams. If you thrive in this culture, come join us!

Your Impact:

  • You will build a new, unprecedented way to orchestrate Zero Trust segmentation down to the application utilizing the Windows Filtering Platform.

  • Use the latest technologies and C++ standard.

  • You will have the opportunity to own and design critical features and subsystems, work out all the details, and defend the design before your peers.

  • You will deliver a rock-solid implementation that is elegant, simple, scalable, stable, secure, and supportable. Our product protects the critical infrastructure of large enterprises. It must work.

  • You will have the opportunity to work with the field organization and key customers to shape this novel product.

Your Toolkit:

  • Bachelor’s in computer science or equivalent degree. Master’s degree a plus

  • 8+ years building distributed & scalable software systems

  • Expertise in programming in C or C++ (11/14/17/20)

  • Sound networking programming skills at the ip/socket or lower level

  • Experience with Windows kernel level debugging

  • Experience developing multi-process and multi-threaded applications.

  • Must have written production quality Windows Kernel Drivers

  • Familiarity with, and passion for Windows Filtering Platform (WFP), and related technologies.

  • Solid foundation in data structures, algorithms, networking concepts, and debugging skills.

Good to Have:

  • Experience with other firewalling technologies such as iptables, nftables, or packet filter.

  • Familiarity with BPF/eBPF

Our Commitment:

Illumio believes that an environment of unique backgrounds, experiences, viewpoints, and individual contributions drives our success and makes us stronger together. We are dedicated to creating and maintaining a diverse culture and emphasizing inclusion and belonging.

This position involves access to software/technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls

#LI-TD #LI-ONSITE

All official job offers from our company are extended directly by our recruitment team and will be sent through an official E-Signature document for your review and signature. Please be aware that we do not ask for any personal information in the process of extending offers of employment, such as financial details or social security numbers. Upon acceptance of any offer, we will request such information as part of the onboarding process prior to or on your first day of employment, and only after completing a background check through an authorized third-party vendor. If you receive any communication asking for personal details outside of these processes, please contact us immediately to verify the authenticity of the request. Your security is important to us, and we are committed to a safe and transparent hiring experience.

For roles in San Francisco and Los Angeles: Pursuant to the San Francisco Fair Chance Ordinance and the Los Angeles Fair Chance Initiative for Hiring, Illumio will consider for employment qualified applicants with arrest and conviction records.

Compensation Range: $192K - $230K