Working at Cumulus Networks | Glassdoor

Cumulus Networks Overview

Mountain View, CA
51 to 200 employees
Company - Private
Computer Hardware & Software
$10 to $25 million (USD) per year
Cumulus Networks has developed the first true, full-featured Linux operating system for networking hardware. Just as Linux transformed the economics and accelerated the pace of innovation on the server side of the data center, Cumulus Linux is doing the same for the network ... Read more

Mission: Cumulus Networks demystifies the complexity of networking and enables better faster and easier networks to support your business.

Glassdoor Awards

Best Places to Work: 2017 (#35)

Company Updates

  • Josh Leslie, CEO & JR Rivers, CTO


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Cumulus Networks – Why Work For Us?

Our founding team is comprised of some of the industry’s most renowned technology innovators responsible for the some of the most significant advancements in networking.  With funding from top Venture Capitalists such as Andreessen Horowitz, Sequoia Capital, Battery Ventures, and Telstra we can be the hero in networking.  We are not just defining the future of networking, we are actively creating it with our customers and partners.

Cumulus makes the first Linux operating system for networking hardware and fills a critical gap in realizing the true promise of the software-defined data center.  Working here puts our employees at the center of some of the most interesting and exciting ideas in Silicon Valley.  We are a very tech-driven company and have earned a lot of industry recognition in a short period of time.

Our corporate headquarters is in Mountain View, CA and we now have a global footprint with offices in North Carolina, Sydney, and Bangalore and have staff throughout the globe. 

Make a Career in Our Space!

We’re a startup, built by people who have gone down this road before.  We are action oriented doers and transparent thinkers with a healthy work-life balance.  We offer a competitive compensation package, pre-IPO equity, and comprehensive health benefits for employees and their families that rival even the most successful Silicon Valley companies.  We actively foster a company culture that is open, transparent, collaborative, and flexible.

Our offices are set up in an open space model, with sit/stand desks for every employee. We have catered lunches three times per week, an espresso machine in every location, and stock organic fruit and healthy snacks in the kitchen. Beyond the basics, working here puts our employees at the center of some of the most interesting and exciting ideas in Silicon Valley.

Not to brag or anything but we are also pretty proud of our ratings and reviews on Glassdoor and Business Insider, we encourage you to take a peak.  

Josh Leslie — CEO

Josh is a seasoned technology executive who brings over eighteen years of industry experience to Cumulus Networks. He was previously at Instart Logic where he was their first Sales Executive and was responsible for helping sign and cultivate Instart's first 150 enterprise customers, participating in over $50M of venture capital fundraising and growing the company from 30 to over 130 employees.

Prior to Instart, Josh spent six years at VMware and held leadership roles in both sales and business development as the company scaled from less than $100M to more than $1B in sales. Before VMware, Josh was a field rep for CommVault Systems. He began his career as an analyst and associate in investment banking where he advised technology companies on financing and M&A strategies.

A Bay Area native, Josh received a BA from the University of California, Berkeley and an MBA from Columbia Business School.

At Cumulus we believe in giving each employee the opportunity to shine in their field. Across the board, regardless of position, our highly-skilled and passionate team is bringing the company closer to our goal of bringing web-scale networking to enterprise businesses. Take a look below at the impact our employees are making within the company:

Cumulus Networks Reviews

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Cumulus Networks CEO Josh Leslie
Josh Leslie
72 Ratings
  • Helpful (1)

    "Great Place to Work"

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

    I have been working at Cumulus Networks full-time (More than a year)


    Working at Cumulus has been the best job I've had. The culture in RDU is particularly cozy, and the office has three catered meals a week. The company is the right size to allow cross-functional collaboration between teams. People are generally approachable and helpful.


    Any job can be stressful from time to time, especially in a rapidly changing industry, but the high caliber of skillset and professionalism of people employed here goes a long way to help.

    Advice to Management

    Continue making careful hiring decisions to maintain the quality of the team.

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Cumulus Networks Photos

Cumulus Networks photo of: Our Co-Founder JR in the early days.
Cumulus Networks photo of: Our CEO & CFO Grill-Masters for Oktoberfest
Cumulus Networks photo of: Cheers! Summer Picnic '16
Cumulus Networks photo of: Rocket Turtle adding donations to our Second Harvest Food Bank Barrels
Cumulus Networks photo of: Sales Kickoff Conference 2019
Cumulus Networks photo of: Summer Picnic 2017
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Cumulus Networks Interviews



Getting an Interview

Getting an Interview





    Sales Manager Interview

    Anonymous Employee in New York, NY
    Accepted Offer
    Positive Experience
    Difficult Interview


    I applied through a recruiter. The process took 3 weeks. I interviewed at Cumulus Networks (New York, NY) in November 2016.


    Very thorough. All levels of management were very transparent and shared the great stories as well as challenges. I was impressed with the passion everyone had for the vision of Cumulus Networks.

    Interview Questions

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Cumulus Networks Awards & Accolades

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