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Sr. Staff Security Engineer

Illumio

Remote, Tennessee, United States Remote permanent

Posted: March 11, 2026

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Quick Summary

The Sr. Staff Security Engineer is responsible for designing, implementing, and maintaining the Illumio AI Security Graph, a breach containment platform that enables operational resilience in hybrid multi-cloud environments.

Job Description

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.

About the Team:

The Office of the CTO and Security team sets the strategic technical direction of the company while keeping both Illumio and our customers secure. Those who join us represent the leader in Zero Trust Segmentation and maintain Illumio’s competitive advantage by exploring new technologies while collaborating with Engineering and Product Management.

We are looking for people who leverage differences and push the pace of innovation in a time when the world faces its greatest cybersecurity threats in history.  

Our Team’s Vision:

• The Illumio Security Team helps set the strategic, technical direction of the company while keeping both Illumio and our customers secure. We maintain Illumio’s competitive advantage by exploring new technologies, while collaborating with Engineering and Product Management.

Your Impact:

• You will act as the senior technical resource in our Detect, Respond and Recover functions

• Leverage Illumio Insights as an everyday tool to protect the company, as well as providing input and feedback to the product teams

• Collaborate cross-functionally to protect the Illumio’s production and corporate environments

• Build, deploy, and automate security solutions to support our defense-in-depth strategy, using a mixture of commercial, open-source, and in-house tools

• Continually improve the effectiveness of our tools, and implement new approaches to address the changing threat landscape

• Perform other activities in support of the Security team’s charter

• Mentor others as you yourself gain knowledge and experience

• Participate in weekly on-call rotations

Your Toolkit:

• 8+ years of experience doing the following:

• Detecting and responding to security incidents

• Building and operating enterprise security tools

• Securing multi-cloud environments

• Working knowledge of the Illumio Platform

• Strong scripting and automation skills, ideally in Python and/or Ruby

• A data-driven, analytical mindset

• The ability to express yourself clearly when communicating

• Must be able to show 5 years hands-on technical experience in Incident Response and Security Operations roles.

• Cloud Security experience is required, preferably across multiple cloud platforms such as Azure and AWS.

• Deep understanding of Security Tools and Technologies such as Sentinel, Defender for Cloud, CSPM tools, WAF, IAM, EDR, DLP.

• Experience measuring SOC/SIEM performance and reporting metrics.

Bonus Points:

• Vulnerability Management experience

• Experience working in heavily regulated environments e.g. FedRAMP

• CISSP or equivalent industry certification is ideal. 

About Illumio:

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.

Pay Range:

$180,000 USD - $216,000 USD

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 (but are not limited to) responsibilities of the job, education, location, experience, knowledge, skills, abilities, as well as internal equity, alignment with market data, or applicable laws.

Benefits:

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. #LI-TD1 #LI-HYBRID

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.

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