System Administrator, Senior

Phase2 Technology; Winchester (VA); On-site; USD 61,900 - 141,000; Full time

Job summary

Booz Allen Hamilton is seeking a senior System Administrator to maintain, optimize, and secure our on‑premise and cloud infrastructure. You will apply deep technical expertise, automate routine tasks, and collaborate across teams to support complex IT environments.

The ideal candidate has 3+ years in system administration across Windows and Linux, experience with virtualization, networking, and backups, and holds a Top Secret clearance. HS diploma or GED required.

Qualifications

• 3+ years of experience in system administration with on‑premise and cloud environments
• Experience in Windows and Linux server administration
• Experience with network configuration, security, and troubleshooting
• Knowledge of virtualization technologies such as VMware or Hyper‑V
• Knowledge of monitoring tools and performance optimization techniques
• Knowledge of backup or recovery solutions and disaster recovery planning
• Ability to automate tasks using scripting languages such as PowerShell, Bash, or Python
• Ability to work collaboratively across teams
• Top Secret clearance
• HS diploma or GED

Responsibilities

• Maintain, optimize, and secure on‑premise and cloud infrastructure
• Collaborate across teams to support complex IT environments
• Automate routine tasks and improve operational efficiency
• Assist in disaster recovery planning and incident response

Skills

Windows/Linux admin

Cloud environments

Network security

Virtualization

Monitoring/Perf tuning

Backup/Disaster recovery

Scripting

Team collaboration

Top Secret clearance

HS diploma/GED

Education

HS diploma or GED

Tools

Docker

Kubernetes

Job description

System Administrator, Senior

The Opportunity

We are seeking an experienced senior System Administrator to join our IT team. This role is responsible for maintaining, optimizing, and securing both our on‑premise and cloud infrastructure. In this role you will demonstrate strong technical expertise, a proactive approach to problem‑solving, and prove track record of supporting complex IT environments.

You Have

• 3+ years of experience in system administration with on‑premise and cloud environments such as AWS, Azure, or Google Cloud
• Experience in Windows and Linux server administration
• Experience with network configuration, security, and troubleshooting
• Knowledge of virtualization technologies such as VMware or Hyper‑V
• Knowledge of monitoring tools and performance optimization techniques
• Knowledge of backup or recovery solutions and disaster recovery planning
• Ability to automate tasks using scripting languages such as PowerShell, Bash, or Python
• Ability to work collaboratively across teams
• Top Secret clearance
• HS diploma or GED

Nice If You Have

• Experience with containerization, including Docker or Kubernetes
• Experience with identity and access management solutions
• Knowledge of DevOps practices and CI/CD pipelines
• Knowledge of compliance standards such as ISO, SOC, or GDPR
• Ability to mentor junior team members and lead technical projects
• Possession of excellent communication skills
• MCSE, RHCE, or AWS Certified SysOps Administrator Certifications

Clearance

Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information. Top Secret clearance is required.

Compensation

Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract‑specific affordability and organizational requirements. The projected compensation range for this position is $61,900.00 to $141,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen’s total compensation package for employees. This posting will close within 90 days from the Posting Date.

Work Model

• Remote: If this position is listed as remote, there may still be occasions when you are required to work in person at a Booz Allen or customer facility.
• Hybrid: If this position is listed as hybrid, you will be expected to work from a Booz Allen facility frequently, in alignment with leadership expectations and the needs of the role. You may also be required to work from or visit a customer facility.
• Onsite: If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.