Engineering Intern, Product Security
Confirmed on the employer's own hiring board on Oct 24, 2026. First seen by Alion on Oct 20, 2026. Illumio scores B on the Alion truth index.
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.
This is a 12 week internship program beginning on May 24th 2027 or June 21st 2027
Location: 4 on-site days a week in Sunnyvale, CA Headquarters.
Our Team's Vision:
At Illumio, the Office of the CTO and Security helps shape the company’s strategic technical direction while advancing the security of Illumio and our customers. Illumio’s Product Security team ensures our products are secure by design and resilient against evolving threats, helping protect some of the world’s most critical infrastructure. Those who join us partner with Engineering and Product Management to build security into how our products are designed, developed, and delivered.
As a Product Security Intern, you will help secure our products through a combination of secure code review, vulnerability triage, research, and automation. You’ll work alongside experienced security engineers, gain real-world exposure to Illumio’s platform, and learn how security is embedded throughout the software development lifecycle (SDLC).
Your Impact:
Gain in-depth knowledge of Illumio’s platform and how product security protects it from design through release
Learn how vulnerabilities are identified, triaged, and remediated using findings from static and dynamic analysis tools, penetration tests, and bug bounty programs
Participate in secure code reviews and threat modeling alongside experienced security engineers
Help build security automation scripts and tools that streamline vulnerability detection and triage
Research emerging threats, attack vectors, and mitigation strategies relevant to Illumio’s technology stack
Contribute to internal security documentation, such as best practices and remediation guides, and help promote secure coding practices across engineering teams
Your Toolkit:
Currently enrolled in a full-time Bachelor’s or Master’s degree program in Computer Science, Software Engineering, Cybersecurity or a related field with an expected graduation date in Winter 2026/Spring 2027
Coursework or project experience in areas such as secure coding, application security, or network security
Familiarity with at least one programming language (e.g., Python, Ruby, Go, C++); scripting experience is a plus
Strong interest in application security, vulnerability management, and secure software development
Basic understanding of common vulnerabilities (e.g., OWASP Top 10) is a plus.
Ability to work independently and as part of a team
Strong communication and interpersonal skills
A passion for learning and continuous improvement
What You’ll Gain:
Hands-on experience with real-world product security challenges at Illumio
Exposure to modern security tools, including SAST, DAST, and dependency scanners, and secure development practices
Insight into how vulnerability management, threat modeling, and secure code review work in practice
Mentorship from experienced security engineers and technical leaders
A deeper understanding of how security is embedded into the software development lifecycle
A supportive and inclusive environment that values curiosity, ownership, and continuous learning
#LI-PO1 #LI-ONSITE
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.