C++ Software Engineer - Networking

illumio· Engineering
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📍 HQ - Sunnyvale (Office)FullTime💰 USD 192K–230K/yr

About this role

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:

  • The VEN Policy Platform team is seeking a talented engineer with a strong background and interest in Networking, Operating Systems and System Software Development, who will work on our industry-leading Adaptive Segmentation Solution.

  • We are looking for an engineer to build C++ system services for the Illumio Virtual Enforcement Node — a software agent that runs inside application workloads to enforce security policies within the Illumio Adaptive Security Platform.

  • Your C++ code will be used in a lightweight agent that delivers micro-segmentation security by building on proven, pre-existing mechanisms inside both Unix (Linux, Solaris, AIX), Windows and MacOS operating systems, in order to minimize its footprint.

  • Your desire to help build system services, combined with your knowledge of operating systems, will be leveraged to build innovative solutions.

  • Your code will help to secure our customers’ most critical systems and applications.

  • You will have an immediate impact on features within Virtual Enforcement Node, from concept, design, and development, and you will learn from a talented team of engineers.

Your Toolkit:

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

  • 8+ years building distributed & scalable software systems

  • Strong experience in software applications.

  • Familiarity with networking at the application level.

  • Creative thinking.

  • Proficiency in C++.

  • Have authorization to work in the United States.

Good to Have:

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

  • Familiarity with BPF/eBPF

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

Our Commitment

Illumio believes that an environment of unique backgrounds, experiences, viewpoints, and individual contributions creates a culture of belonging, drives our future, and makes us stronger together in support of our customers and their success.

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.

Frequently Asked Questions

What is the salary for the C++ Software Engineer - Networking role at illumio?
The listed salary for this C++ Software Engineer - Networking position at illumio is USD 192K–230K/yr. This is an FullTime role.
Where is the C++ Software Engineer - Networking position at illumio located?
This C++ Software Engineer - Networking role at illumio is based in HQ - Sunnyvale (Office). The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the C++ Software Engineer - Networking role at illumio full-time or part-time?
This is listed as a FullTime position. It is posted as a C++ Software Engineer - Networking role in the Engineering department at illumio.
Which team or department does the C++ Software Engineer - Networking at illumio belong to?
This C++ Software Engineer - Networking position is part of the Engineering department at illumio. See the full job description for more information about the team structure and responsibilities.
How do I apply for the C++ Software Engineer - Networking position at illumio?
Click the "Apply Now" button on this page. You will be redirected to illumio's official application portal hosted on ashby where you can submit your application directly.
When was the C++ Software Engineer - Networking job at illumio posted?
This C++ Software Engineer - Networking position at illumio was posted on Mar 11, 2026. Apply as soon as possible — early applications are often reviewed first.
C++ Software Engineer - Networking
illumio · 💰 USD 192K–230K/yr
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You'll be redirected to illumio's official application page on Ashby ATS.