Working at CoreSite | Glassdoor

CoreSite Overview

Denver, CO
201 to 500 employees
Company - Public (COR)
Information Technology
$100 to $500 million (USD) per year
CoreSite Realty Corporation (NYSE:COR) delivers secure, reliable, high-performance data center and interconnection solutions to a growing customer ecosystem across eight key North American markets. CoreSite connects, protects and delivers an optimal performance environment and ... Read more

Mission: To help businesses connect, protect and maintain optimal performance and continued operation of mission-critical data and IT infrastructure.

Simple. Honest. Strong.

CoreSite – Why Work For Us?

The core of who we are

CoreSite isn’t just another data center. It’s a mission. We’re committed to connection through the power of community, and our team reflects that vision. A career at CoreSite means helping to leverage the power of technologies that make the world spin.



Big enough to matter. Small enough to grow.

We’re a company big enough to make a difference in the global economy of technology, but small enough that each member of our team can have an impact. We’re not a monolithic collection of silos. We’re a team of people from an assortment of experiences and cultures and skills, united under a common goal: powering a scalable community of costumer connections that matter. To everyone.


Enabling the digital economy

At CoreSite, our vision is to be at the core of IT transformation and propel the growth and performance of digital business. We’ve translated that into our critical mission of accelerating our customers’ growth and performance by delivering network-dense, cloud-enabled data center solutions and premium customer experiences to interconnected customer communities. All of this is supported by our key values: Simple, Honest, Strong. These values drive every interaction we have with each other, our customers, our prospects and our partners. We’re looking for people to join our team that will believe in that same mission, vision and values.

Not only does CoreSite have a fun, team-focused work environment, but we also offer great benefits!

  • Medical, Dental and Vision coverage through Cigna Heath Care

  • 401(k) Retirement Savings Plan with a Company Contribution

  • Life Insurance (Supplemental and Accidental Death)

  • Short-Term & Long-term Disability Insurance

  • Medical and Dependent Care Flexible Spending Account (FSA) Plans

  • Free parking in Downtown Denver! (Or, commuter benefits)

  • Free gym access

  • 3 weeks of Personal Time Off

  • 10 paid Holidays

  • Wellness Program with $150 annual incentive

  • Paid Volunteer Day of Service on September 11th

  • Sing-a-Longs and Fun Company Events (Annual Broomball tournament and Halloween costume contest).

CoreSite Reviews

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Recommend to a friend
Approve of CEO
(no image)
Paul E. Szurek
5 Ratings
  • "Growth & Opportunity"

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

    I have been working at CoreSite (More than a year)


    -CoreSite and the data center REIT industry have had amazing returns over the past few years.

    -CoreSite in runs very lean, less bureaucracy.

    -Successful/motivated employees are recognized and fast tracked into management positions or are allowed switch departments into a more desirable role.

    -Young and positive company mindset with little micromanagement.

    -Benefits are decent
    -Pay for non sales related jobs is okay.
    -Excellent compensation in sales.
    -Office space and location are nice.


    Very few,

    -Out of the leading data center REITS, CoreSite is the only one that does not have an international presence. This isn't a terrible con, but something that leaves to be desired for some employees.

    -minor office politics, but this is really expected at any corporation.

    Advice to Management

    -Management runs well overall, not sure why other reviews are so critical. The company experienced excellent growth under Tom Ray.

    -There could be more communication between HQ in Denver and the field locations around the country. A lot of us in Denver have no idea what is going on at the sites.

    -There could be more diversity in skill sets across the board. Not everyone has to come from the same industry background to be successful.

See All 47 Reviews

CoreSite Interviews



Getting an Interview

Getting an Interview





    Security Officer - Site Supervisor Interview

    Anonymous Interview Candidate in Santa Clara, CA
    No Offer
    Negative Experience
    Average Interview


    I applied online. I interviewed at CoreSite (Santa Clara, CA) in January 2017.


    Interview on multiple management levels in person or by phone. In person and phone interview was a score card of pre-determined applicant questions. There was no personality in the interview process or function of feeling out the position from a personal perspective.

    Interview Questions

    • Situational based question what were reactions completing job specifications.   Answer Question
See All 20 Interviews

CoreSite Awards & Accolades

  • Top Places to Work, The Denver Post, 2013

CoreSite Locations

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