GCyber

Senior Windows System Administrator

Arlington, VA
Full Time
Information Technology
Experienced
GCyber is seeking a Senior Windows System Administrator, to help support our government customer in Arlington, VA. The role focuses on ownership of our Windows environment while supporting a mixed-OS infrastructure.

As the Senior Windows System Administrator, you will:
  • Serve as the senior lead and primary Subject Matter Expert (SME) for all Windows Server environments, driving technical strategy, architecture decisions, and operational excellence.
  • Design, architect, implement, and sustain enterprise Windows infrastructure.
  • Own the health, performance, and availability of Windows systems; proactively monitor, analyze trends, and implement improvements to prevent issues before they impact operations.
  • Lead complex troubleshooting and incident resolution efforts, conducting deep root cause analysis and implementing permanent corrective actions across systems and services.
  • Establish and enforce enterprise standards, baselines, and hardening guidelines in alignment with security frameworks and compliance requirements.
  • Provide technical leadership and mentorship to system administrators and engineers; guide best practices and elevate team capabilities across Windows technologies.
  • Lead planning and execution of system lifecycle activities, including patching, upgrades, migrations, and modernization initiatives.
  • Provide cross-platform support by performing basic Linux system administration and coordinating with Linux SMEs for complex issues.
Minimum Qualifications and Experience:
  • Active Top Secret/SCI clearance
  • Bachelor’s degree in a related discipline with 8+years of relevant experience
  • IAT II Certification (i.e., Security+, CCNA-Security, CySA+, CND, GICSP, GSEC, SSCP)
  • Strong experience administering Windows Server environments
  • Deep understanding of core Windows services and system management
  • Working knowledge of Linux systems.

Our Benefits

GCyber is committed to the well-being and development of every employee. Our benefits are designed to support your personal and professional goals, from health and wellness programs to retirement savings and career development opportunities. Highlights include:

  • 26 Days of Paid Leave + Annual PTO Increase
  • An extra day of paid leave for every year of employment with GCyber
  • Paid Parental Leave
  • Additional Leave Allowances for Military Duty, Jury Duty, and Bereavement Leave
  • 401(k) Matching
  • 100% Company-funded Disability Insurance
  • 90% Company-Funded Health, Dental, and Vision Insurance, with contributions to insurance benefits for spouses, children, and family members
  • Training and Professional Development Plans
  • Commuter Benefits Plan
  • Parking and Transportation Allowance

Equal Opportunity Employer

GCyber is an Equal Opportunity Employer. This means you don't have to worry about whether your application process will be fair. We consider all applicants without regard to race, color, religion, age, ancestry, ethnicity, gender, gender identity, gender expression, sexual orientation, veteran status, or disability.

Stay in Touch

For future job notifications please follow GCyber on LinkedIn. https://linkedin.com/company/gcyber

Share

Apply for this position

Required*
We've received your resume. Click here to update it.
Attach resume or Paste resume
Attach resume as .pdf, .doc, .docx, .odt, .txt, or .rtf (limit 5MB) or Paste resume

Paste your resume here or Attach resume file

To comply with government Equal Employment Opportunity and/or Affirmative Action reporting regulations, we are requesting (but NOT requiring) that you enter this personal data. This information will not be used in connection with any employment decisions, and will be used solely as permitted by state and federal law. Your voluntary cooperation would be appreciated. Learn more.
Invitation for Job Applicants to Self-Identify as a U.S. Veteran
  • A “disabled veteran” is one of the following:
    • a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or
    • a person who was discharged or released from active duty because of a service-connected disability.
  • A “recently separated veteran” means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.
  • An “active duty wartime or campaign badge veteran” means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.
  • An “Armed forces service medal veteran” means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.
Veteran status


Voluntary Self-Identification of Disability
Voluntary Self-Identification of Disability Form CC-305
OMB Control Number 1250-0005
Expires 05/31/2026
Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp.

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

  • Alcohol or other substance use disorder (not currently using drugs illegally)
  • Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
  • Blind or low vision
  • Cancer (past or present)
  • Cardiovascular or heart disease
  • Celiac disease
  • Cerebral palsy
  • Deaf or serious difficulty hearing
  • Diabetes
  • Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
  • Epilepsy or other seizure disorder
  • Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
  • Intellectual or developmental disability
  • Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
  • Missing limbs or partially missing limbs
  • Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
  • Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
  • Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
  • Partial or complete paralysis (any cause)
  • Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
  • Short stature (dwarfism)
  • Traumatic brain injury
Please check one of the boxes below:

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.

You must enter your name and date
Human Check*