Sr Systems Administrator

Job Description

Sr Systems Administrator

Location: Reston, Virginia (Onsite)

Employment Type: Contract

We are seeking a Senior Systems Administrator for a long-term contract position. This role involves supporting a key federal client and requires working fully on-site. The position is a backfill on a three-year contract, offering a stable engagement within a critical infrastructure environment.

• Plan, design, and implement infrastructure changes and system upgrades.
• Manage and troubleshoot multiple VMware environments.
• Perform Windows Server and Linux administration, maintenance, and troubleshooting.
• Create STIG compliant images for Windows Desktop, Windows Server, and Linux OS.
• Create, test, and deploy software packages using tools such as SCCM or PDQ.
• Provide expert‑level support and mentoring for mid and junior system administrator personnel.
• Develop and maintain installation and configuration procedures for system and software changes.
• Utilize scripting to automate common tasks.
• Perform hardware maintenance and repair activities.
• Ensure proper planning and execution of major projects and maintenance activities.
• Provide advanced administration and troubleshooting of Active Directory, GPO, DNS, DHCP, and Domain Controllers.

Education: A Bachelor of Science degree is required, or an additional four years of relevant work experience may be substituted.

Experience: A minimum of 8 years of relevant systems administration experience. Candidates with 12 or more years of experience may be considered without a degree.

Technical

Skills:

• Ability to write scripts using Power Shell and/or Bash.
• Experience managing VMware, Nutanix, and other enterprise‑level virtual infrastructures.
• Proficiency in managing and troubleshooting Active Directory and Group Policy Objects (GPO).
• Must be DoD 8570 compliant (IAT Level
  2) by the date of security indoctrination.
• Must hold an active CI Poly clearance.

• Linux OS (CentOS, RHEL) administration.
• Satellite server administration.
• Ansible playbook writing.
• Experience implementing STIGs.
• Experience supporting a software configuration management and development environment.

The pay rate for this position is between $65.00 and $85.00 per hour, contingent upon experience. Our organization offers a range of supplemental benefits, including medical, dental, vision, life, and disability insurance plans. We also provide an Employee Stock Purchase Program (ESPP) and a 401K program. Additional resources include a Health Savings Account (HSA), an Employee Assistance Program (EAP), and professional development opportunities.

Apex is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a Support Linc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts.

In terms of professional development, Apex hosts an on‑demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6 months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our consultants that can address questions around benefits and other resources, as well as a certified Career Coach.

You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.