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Systems Administrator (Windows)

Posted February 04, 2026
Salaried, full-time

Job Overview


About the role


This position is for a Mid-to-Senior Level Systems Administrator in Aurora, CO.  You will work closely with a talented team to design, manage, secure and optimize the Information Technology (IT) infrastructure for one of our Department of Defense (DoD) clients.  Additionally, you will be tasked with improving the overall project management discipline of our clients by increasing collaboration and innovation and introducing techniques that promote adaptability and flexibility in the face of unpredictable circumstances, and that optimize return on investment expenditures.


This role is an on-site role, and requires, at a minimum, a current US Government Secret clearance, with a TS with SCI eligibility preferred.


What you'll do

  • Proactively monitor system performance and conduct capacity planning
  • Perform fault finding using search techniques and analyze log data to detect performance issues
  • Manage, coordinate, and implement software upgrades, patches, and fixes on Windows servers, workstations, and virtual machine hypervisors
  • Create and modify scripts (PowerShell or other languages) to automate routine tasks and improve efficiency
  • Collaborate with teams to enhance environmental stability, security, efficiency, and scalability
  • Document procedures, configurations, and troubleshooting steps based on notes and instructions
  • Conduct on-the-job training and informal sessions on system design, data flow, and operational procedures
  • Maintain systems within a customer-owned facility, adhering to security and operational standards
  • Support 24/7 operational needs, including occasional after-hours duties, under the guidance of the SA Team Lead
  • Ensure compliance with security standards, including DISA STIGs
  • Update Virus Definitions on EPO/Trellix server and ensure that all clients are running the latest definitions and software
  • New user account creation and troubleshooting of account


Required Qualifications

  • Security+ certification (must be obtained within 90 days of assignment)
  • Experience with Windows system administration both Desktops and Server
  • Working with and managing group policies
  • PowerShell or other scripting/programming language knowledge
  • Experience with authentication systems such as Active Directory
  • Windows Hyper-V experience in virtualization
  • Active DoD Secret Clearance


Preferred/Bonus Qualifications

  • Active DoD TS/SCI
  • Windows Active Directory administration
  • Experience installing, administering, and maintaining Windows servers and desktops
  • Proficiency with Microsoft Visio and PowerPoint
  • Strong personal interaction and communication skills
  • Cybersecurity operator experience
  • Network administration skills
  • Knowledge of DISA STIG security hardening guidelines
  • Satellite Ground Systems operations experience
  • Experience with SBIRS system architecture
  • UNIX/Linux system administration experience or Red Hat Linux/AIX knowledge
  • Experience with PDQ products or other software deployment tools such as SCCM


Other Company Requirements

In addition to job-specific requirements, Centil believes it is important for all employees to possess the following skills/characteristics:

  • Strong communication (written and verbal) and presentation skills.  Ability to passionately deliver high-level messaging to various types of audiences--this will eventually include senior leaders.  Ability to explain technical concepts clearly to non-technical personnel
  • Self-motivated individual who actively and independently seeks out opportunities for learning and development
  • Collaborates well; enjoys working as part of a team
  • DoD Secret or higher clearance is preferred.  All applicants must be US citizens eligible for a US Government security clearance


Expected Salary Range

Depending on experience and skillset, most candidates will earn between $125,000 and $170,000 per year.

Please note that the salary range is a general guideline only. We consider many factors when determining salaries including, but are not limited to, scope and responsibilities of the position, candidate’s work experience, education, training, certifications, key skills, and mission/customer familiarity. We combine these factors with market and business considerations to extend a job offer.


Benefits

Centil offers a comprehensive benefits package including the following:

  • Generous PTO for vacation, personal, or sick days
  • Ten (10) paid holidays per year:  8 fixed holidays, plus 2 additional Floating Holidays per year (taken at Employee's discretion)
  • Flex time and the ability to create your own schedule
  • Discretionary bi-annual bonus plan, based on individual and company performance
  • 401K retirement plan with immediately vested company contributions, no matching required
  • Healthcare coverage plan through an Individual Coverage Health Reimbursement Arrangement (ICHRA)
  • Employer-paid Life, Long-Term Disability, and Accidental Death and Dismemberment insurances
  • Access to optional, employee-paid Life, Accident, Critical Illness, and Hospital Indemnity insurances
  • Access to a Dependent Care Flexible Spending Account (FSA)
  • Paid training and conference attendance
  • Additional benefits, as needed, for significant life events: parental leave, bereavement leave, jury duty pay, military leave pay
  • One-time home office reimbursement
  • Phone plan reimbursement
  • Employee Assistance Program (EAP) services, supporting emotional health and well-being of employees and their families


Centil is an Equal Opportunity Employer.  Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability, protected veteran status or any other status protected by applicable law.

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