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About Coresite

At CoreSite, we empower a more connected future through high-performance data centers and interconnection solutions. Recognized as a trusted partner in digital transformation, our strategically located facilities and innovative services enable businesses to connect, collaborate, and grow in an ever-evolving technological landscape.

Our culture is defined by operational excellence and a relentless drive for innovation. We foster a collaborative, inclusive environment where every team member is valued, wins are celebrated as a team, and ownership is part of our DNA. At CoreSite, we’re not just building state-of-the-art infrastructure—we’re creating a community of forward-thinkers committed to solving complex challenges and delivering exceptional customer experiences.

At CoreSite not only are we Committed to Excellence, but we also Build Connections, Own It, Do the Right Thing, Have Fun, and Win as a Team. Join us and be part of a team that is shaping the future of digital infrastructure while nurturing your professional growth and success.

Systems Administrator - Security Role:

As a member of the company’s Information Technology team, the Security Systems Administrator will be responsible for identifying, evaluating, deploying and maintaining cyber security technologies that add value to our internal stakeholders and improve organizational capabilities. In addition to effective technology and process management, the job requires strong interpersonal and collaboration abilities. Candidate must have the ability to operate independently and work well in a team environment working on projects and designing, implementing, and maintaining security measures to protect an organization's computer systems. We value individuals who dive into technology and have a thirst to learn. Most of job duties will be to lead security centric systems projects while also providing operational support and tuning of existing tools.

Duties:

+ Provide day-to-day support on all cybersecurity request fulfillment, incident response, documentation, and follow-up

+ Assist administration of critical security centric systems and application

+ Assist the deployment of new technologies or upgrade existing capabilities focusing on security best practices

+ Serve as a liaison to facilitate effective communication and collaboration between the Infosec and Systems teams

+ Research and mitigate vulnerabilities identified by the Infosec team

+ Continuously identify, analyze, and mitigate cybersecurity risks across the organization’s servers, storage and application environment

+ Assist in managing vendor relationships to identify sustainable strategic partnerships, manage costs, and verify contractual service-level agreements are delivered

+ Create and update technical documentation to maintain an accurate system of record and provide departmental training materials for new systems and processes

+ Participate in departmental budgeting and goal setting process to lay out long-term and short-term project priorities, identify new technologies to enhance operational capabilities, and leverage vendor relationships to secure competitive pricing

+ Support changes in approved and scheduled maintenance windows (i.e. software upgrades, hardware replacement, migrations, etc.)

Requirements

Duties:

+ Provide day-to-day support on all cybersecurity request fulfillment, incident response, documentation, and follow-up

+ Assist administration of critical security centric systems and application

+ Assist the deployment of new technologies or upgrade existing capabilities focusing on security best practices

+ Serve as a liaison to facilitate effective communication and collaboration between the Infosec and Systems teams

+ Research and mitigate vulnerabilities identified by the Infosec team

+ Continuously identify, analyze, and mitigate cybersecurity risks across the organization’s servers, storage and application environment

+ Assist in managing vendor relationships to identify sustainable strategic partnerships, manage costs, and verify contractual service-level agreements are delivered

+ Create and update technical documentation to maintain an accurate system of record and provide departmental training materials for new systems and processes

+ Participate in departmental budgeting and goal setting process to lay out long-term and short-term project priorities, identify new technologies to enhance operational capabilities, and leverage vendor relationships to secure competitive pricing

+ Support changes in approved and scheduled maintenance windows (i.e. software upgrades, hardware replacement, migrations, etc.)

Knowledge, Skills & Abilities:

+ Must be able to work during normal business hours and nights or weekends as needed to support on-call coverage and maintenance windows

+ Ability to thrive in a hybrid work environment; with at least 2 days per week in the downtown Denver office

+ Occasional travel (5%) for onsite support, datacenter build-out/expansions, or for training as needed

+ Ability to manage concurrent projects while maintaining day-to-day operations

+ Strong interpersonal, collaborative communication, and customer-first mindset

+ Problem-solving and troubleshooting skills, with attention to detail and a strong work ethic

+ A knack for grace under pressure and a sense of urgency that puts the customer first

+ Understanding of information technology and information security practices and trends

+ Some understanding of systems and applications hardening

+ Ability to learn new cybersecurity technologies and assist with research, deployment, and tuning of new technologies

+ Understanding of Microsoft technologies (O365, AD, Entra, LAPS, DNS, Group Policy, Security Permissions)

+ Understanding of systems security patching process

+ Some understanding or security certificates

+ Some understanding or email filtering (Mimecast, Harmony)

+ Some understanding of data protection and recovery (Rubrik)

+ Some understanding of server technologies (Windows Server, Linux Server)

+ Some understanding of Virtualization technologies (VMware, Hyper-V)

+ Some understanding of Storage technologies (EMC, Pure)

+ Some understanding of Server hardware technologies (Dell)

+ Some Understanding of LAN/WAN technologies, OSI Model

+ Proficient with the Microsoft Office Suite with emphasis in Excel and Visio

Education and Experience:

+ Bachelor’s degree in Information Technology or related field preferred

+ Minimum 4 years of IT experience with at least 1 year of systems administration experience

+ Relevant professional certifications preferred

Physical Demands:

The physical demands described here are representative of those that must be met by an employee to successfully perform the job’s essential functions. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

While performing the job’s duties, the employee is occasionally required to stand, walk, sit, use hands to handle or feel objects, reach with hands and arms, climb stairs, balance, stoop or kneel, talk and hear. The employee must occasionally lift and/or move objects weighing up to 50 pounds.

Compensation:

Compensation for this role includes a base salary between $75,000 - $90,000 annually. This role is also eligible for an annual bonus and equity, based upon individual and company performance.

Posting Timeline: This position is expected to be open for applications through May 8, 2025.

Benefits

Not only does CoreSite have a fun, team-focused work environment, but we also offer great benefits to all employees regularly scheduled to work more than 20 hours a week!

+ First-day medical insurance through Cigna with generous premium cost coverage

+ Dental insurance through Delta Dental

+ Vision insurance through VSP

+ Telemedicine through MDLive for Cigna

+ Healthcare and dependent care flexible spending account (FSA) plans

+ Health saving account (HSA) plans for employees participating in the High Deductible Health Plan

+ Life, AD&D, short-term disability, and long-term disability insurance fully paid by the company

+ Voluntary coverage benefits for supplemental life, critical illness, accident, and hospital insurance

+ First-day eligibility for 401(k) savings plan through Fidelity, which includes an attractive matching company contribution with a 5% company match

+ Discretionary annual bonus and equity incentive plan

+ Employee stock purchase plan (ESPP) with a 15% discount

+ 16 days of paid time off (PTO)11 paid company holidays and additional floating holidays

+ Additional paid time off for school events, elder care, volunteering, bereavement, jury duty, voting, parental leave and disability leave

+ Free parking or a company contribution toward a public transit pass

Additional Perks

+ Wellness Reimbursement Program: Yearly stipend of $500 for employees and $300 for dependents, up to $800 total for the family

+ Wellness Incentive Program: Participate in various wellbeing activities to earn up to $450 per year in cash incentives

+ Cell Phone Reimbursement: Monthly cell phone reimbursement for approved positions

+ Educational Reimbursement Program: Work-relatedlearning and development with reimbursement on qualifying degree programs, up to $5,250 per year

+ Giving Back: Charitable donation matches up to $5,000 per year and nominate organizations for Company Foundation grants

+ Financial Management: Access to financial coaching, digital tools and services to manage and pay student loan debt quicker

+ Pet Insurance: Keep your furry friends healthy and happy

+ Family Planning: Benefits and services related to fertility, pregnancy, menopause, adoption and surrogacy

+ Employee Assistance Program: 24x7 service to support family, work, money, health, legal and lifechallenges

+ Counseling and Caregiving Programs: Including access to mental health services, licensed counselors, and caregiving tools including membership for finding care.

+ Referral Bonus: Receive a $3,000 cash bonus if referred candidate is hired and meets eligibility requirements

+ Discounts: Discounts, cash back offers and perks on thousands of brands

+ LinkedIn Learning Membership: Support your development when accessing LinkedIn’s online library of courses and videos

General Statements -

Applicants must be currently authorized to work in the United States on a full-time basis. The employer will not sponsor applicants for work visas.

Denver CO Applicants - Please note that all offers of employment are contingent upon the successful completion of a background check and, where permitted by law, a 5-panel drug test conducted after the offer letter is signed, which will screen for THC, opiates, PCP, cocaine, and amphetamines. Thank you for your understanding and cooperation.

Los Angeles CA Applicants - Please note that all offers of employment are contingent upon the successful completion of a background check and, where permitted by law, a 4-panel drug test conducted after the offer letter is signed, which will screen for opiates, PCP, cocaine, and amphetamines. Thank you for your understanding and cooperation.

Applicant Privacy Notice: CoreSite is committed to protecting the privacy and security of personal information submitted by applicants. The California Consumer Privacy Act (CCPA) requires us to provide you information about our personal information handling practices. As a result, we’re providing this Privacy Notice that describes how we collect, use, share, and update personal information from individuals who wish to be considered for employment with CoreSite. To read the Applicant Privacy Notice, please go to https://www.coresite.com/applicant-privacy-notice.

Unauthorized reproduction or distribution of this job posting on external sites is prohibited without prior written consent from CoreSite. We are not responsible for any postings or offers not originating from our official channels or approved partners.