Demo

Sr. Software Engineer, Kubernetes Security

Illumio
Sunnyvale, CA Full Time
POSTED ON 12/20/2025
AVAILABLE BEFORE 2/18/2026

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.

Location: Onsite, Sunnyvale, California (5 days a week in the office)

Our Team's Vision


Our Engineering team has established a culture based on thought leadership, independence, and responsibility. This powerful dynamic drives us forward as we work to make the digital world a safer place.

Those who join us represent the leader in Zero Trust Segmentation and work on a technology stack that ranges from operating systems to distributed applications to UI and visualization. Together, we will continue to build world-class products—driven by people with different perspectives, backgrounds, and a commitment to innovation in a time when the world faces its greatest cybersecurity threats in history.

Your Impact:

  • You will build a new, unprecedented way to orchestrate Zero Trust Segmentation down to the application / pod level, identifying easily blocking pathways of attacks in the container ecosystem
  • You will understand and enhance modern container platforms such as Kubernetes, Istio, OpenShift, AKS, EKS, GKE etc.
  • 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
  • 4 years building distributed & scalable software systems
  • Proficient in at least one higher-level language such as Go, Python , Java, etc.
  • Experience building large, distributed, and scalable software systems
  • Familiarity with, and passion for Kubernetes and related technologies
  • Solid foundation in data structures, algorithms, networking concepts, and debugging skills
  • Experience with networking and security controls is a plus
  • General TCP/IP networking knowledge
  • Unix/Linux programming environment experience

LI-KD1 #LI-ONSITE


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.

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: $167K - $192K

Salary : $167,000 - $192,000

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