Working at Illumio | Glassdoor

Illumio Overview

Sunnyvale, CA
201 to 500 employees
Company - Private
Enterprise Software & Network Solutions
Unknown / Non-Applicable
Illumio, the leader in micro-segmentation, prevents the spread of breaches inside data center and cloud environments. Enterprises such as Morgan Stanley, BNP Paribas, Salesforce, and Oracle NetSuite use Illumio to reduce cyber risk and achieve regulatory compliance. The Illumio ... Read more

Mission: Hear directly from Illumio's founders and the people building Illumio:

Company Updates

  • Thrilled to be honored with a Morgan Stanley CTO Innovation Award. We've protected Morgan Stanley’s data center environment for 3+ years running – and innovation and partnership are at the core of it all!

    Illumio Receives Morgan Stanley's CTO Innovation Award

    Leading Financial Services Firm Honors Illumio with Coveted Innovation Award While Using the Illumio Adaptive Security Platform® to Secure Applications and Critical Data with Micro-Segmentation SUNNYVALE, Calif. - June 19, 2018 - Illumio today announced it was the recipient of Morgan Stanley's CTO Innovation Award during the company's 18th TechWeek and CTO Innovation Summit.

  • Illumio is back on the CNBC Disruptor 50 list! Of nearly 1,000 nominees, only 50 companies made the cut — those whose "innovations are changing the world."

    "We founded the company 5 years ago with a mission to enable our customers to build trust with their customers," said Andrew Rubin, CEO and co-founder of Illumio. "Our inclusion on this list of breakthrough, market-defining companies for the second time is an honor — and further validation of Illumio’s approach to securing the world’s data centers and cloud environments through micro-segmentation."

    Read more:

    CNBC Names Illumio to its 2018 Disruptor 50 List

    For the second consecutive year, Illumio is recognized as one of the top 50 most innovative companies in the world that it has been named to the sixth annual SUNNYVALE, Calif. - May 22, 2018 - Illumio today announced CNBC Disruptor 50 list.

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Illumio – Why Work For Us?

One of the biggest benefits of working with a growing company like Illumio is the all-around impact employees have on the overall product and business. Each person’s work directly affects the outcome of the finalized product and success of the business. Additionally, every individual has the opportunity to work cross-departmentally to learn new aspects of the product and business. Click here to learn more about Illumio from #TeamIllumio—the people who are building it all. 

This is an exciting time to be in computing. More change occurred in the past 5 years than in the 25 preceding them. Today’s computing is dynamic and distributed. It is more attuned to the constant flow and iteration of the business climate than the constructs of the earlier era of IT, with its silos and inflexible infrastructure constructs. It almost feels alive.

But there is something missing. The network-centric security model that worked well 20 years ago—when computing was relatively static—struggles mightily to keep up. Our team looked at the full sweep of security technologies for the dynamic data center and found them lacking. We saw an opportunity to address this challenge with a vigilant and adaptive security platform that would work in any data center or cloud environment—independent of the network and hypervisor.

Traditional security policies rely on network constructs like IP addresses, VLANs, and zones. We wanted our customers to be able to write their security policies in natural language, without requiring any understanding of the underlying network. We wanted security to follow the model of how people construct applications, and how infrastructure should support computing, including the use of public cloud and new virtualization or abstraction technologies.

We built the Illumio Adaptive Security Platform (ASP) to provide unprecedented visualization and control of enterprise applications. Our system constantly inspects and adapts to the computing environment it is protecting, without pause.

Moreover, since 75 percent of computing interactions never leave the data center, our customers can now have complete visibility behind the firewall, whether it is running in their data center or the vibrant public cloud services of Amazon Web Services, Microsoft Azure, Google Compute Engine, Rackspace, and many others.

Our platform underpins our customers’ ability to move to new data center technologies such as cloud. It helps them achieve an order of magnitude improvement in their security posture and operational efficiency.

It’s a new world. As the artist Jackson Pollock noted, “new needs need new techniques.”


For the past 20 years, security has been the also-ran, bolt-on of computing—kind of like insurance. The team at Illumio is changing that by making security the must-have technology for the data center and cloud, and the key to helping enterprises of all sizes become more agile and secure. If you want to do the best work of your life, in an open environment where we respect and amplify your talents, Illumio is the place to do it.


Sit. Stand up. Recline. Eat meals on the patio. Our headquarters was designed from the ground up to offer a space for all kinds of work styles and hours. Plus, we’ll keep you fed by bringing in meals from some of the best local restaurants.

Illumio Reviews

Rating TrendsRating Trends
Recommend to a friend
Approve of CEO
Illumio CEO Andrew Rubin
Andrew Rubin
17 Ratings
  • Helpful (4)

    "Amazing company"

    • Work/Life Balance
    • Culture & Values
    • Career Opportunities
    • Comp & Benefits
    • Senior Management
    Current Employee - Anonymous Employee in Sunnyvale, CA
    Current Employee - Anonymous Employee in Sunnyvale, CA
    Positive Outlook
    Approves of CEO

    I have been working at Illumio full-time (Less than a year)


    I chose this company because I felt like the culture would mesh well with my personality and I was 110% right. Working here, you feel the support from managers from all departments. Tools and training are always available to you when it's needed. Management is always there to provide ways for you to succeed and grow. Everyone has such an open communication with one another that it makes working together very easy. Great benefits. Great people. Pet friendly environment. Unlimited PTO with the approval of your manager.


    There's been some turn over in the field but that's usually what's expected with a start-up company.

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Illumio Photos

Illumio photo of: Pie at HQ to get into the holiday spirit
Illumio photo of: Diwali 2018
Illumio photo of: Game Day 2018!
Illumio photo of: Watermelon carving contest (never not segmenting)
Illumio photo of: Interns lunch with co-founder and CTO PJ Kirner
Illumio photo of: #officedogs
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Illumio Interviews



Getting an Interview

Getting an Interview




  1. Helpful (3)  

    Intern Interview

    Anonymous Employee in San Jose, CA
    Accepted Offer
    Positive Experience
    Easy Interview


    I applied through an employee referral. The process took 1 day. I interviewed at Illumio (San Jose, CA) in January 2016.


    Consisted of only 5 sets of interviews all in one day. Then one take home project. I got the interview because I won a hackathon prize that they sponsored, and they invited me to come tour their offices. I was interested in what they did and so they offered me an interview.

    Interview Questions

    • Just build some kind of data visualization using d3 and show it to us.   Answer Question
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Illumio Awards & Accolades

  • Disruptor 50 List, CNBC, 2018
  • Best Places to Work in the Bay Area, San Francisco Business Times and the Silicon Valley Business Journal, 2018
  • 51 enterprise startups to bet your career on, Business Insider, 2018
  • 5 of the hottest cybersecurity startups to watch in 2018, Computer Business Review, 2018
  • Security Innovation of the Year, The Cloud Awards, 2018
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