Sr. Systems Administrator

Job Title: Sr. Systems Administrator
Job Location: Manassas, VA
Eligibility/Clearance: US Citizen or Green Card Holder

JOB DESCRIPTION
We are seeking a skilled and experienced System Administrator to join
our team. The ideal candidate will manage and maintain our Microsoft
Windows systems, endpoint security, and cloud infrastructure. Here are
the key requirements and responsibilities for this role:

Technical Skills:
Active Directory (AD) and Group Policy Objects (GPO):
- Proficient in managing and maintaining Active Directory, including
creating and managing security groups.
- Experienced in implementing and troubleshooting Group Policy Objects
for efficient system configuration.
- Proficient in managing Windows Server Infrastructure
(2016/2019/2022).
- Experience with Microsoft Office, Office365, Active Directory, File
Clusters, and Print Servers.

Vulnerability Assessment and Security Frameworks:
- Thorough knowledge of conducting vulnerability assessments to
identify and mitigate potential security risks.
- Familiar with security frameworks such as CIS and NIST guidelines,
ensuring compliance with industry standards.
- Previous knowledge of implementation of Zero-Trust architecture.
- Implement and administrate endpoint security tools, including EDR
solutions.

Cloud Services:
- Solid understanding and practical experience in utilizing Azure
services for cloud-based solutions.
- Proficient in deploying and managing resources on the Azure
platform.

Virtualization:
- Skilled in virtualization technologies, including setup,
configuration, and maintenance of virtual environments.
- Extensive experience in optimizing virtual resources to enhance
overall system performance.

Asset Management:
- Well-versed in asset management practices, including tracking,
inventory, and lifecycle management of IT assets.
- Skilled in implementing efficient asset management systems for
improved organizational efficiency.

Scripting and Automation:
- Experience interpreting, writing, and debugging PowerShell scripts
for automation.

Responsibilities:
System Maintenance:
- Maintain Operating System baselines for Windows Servers and
Workstations.
- Implement, install, configure, monitor, troubleshoot, and evaluate

Microsoft Windows operating systems.
Enhancements and Recommendations:
- Recommend and implement system enhancements to improve performance
and reliability.
- Install, upgrade/patch, monitor, troubleshoot, and perform
configuration management.

Security Implementation:
- Implement hardened settings to improve the security posture of
endpoints.
- Restrict the use of local admin accounts and implement the least
privilege principle.

Support and Diagnostics:
- Provide support to technical staff in diagnosing and correcting
system-related failures.
- Determine logical solutions to complex system administration and
application problems.

Disaster Recovery and Replication:
- Implement and manage disaster recovery strategies.
- Configure and maintain replication processes for critical systems.

Academic QUALIFICATIONS
- Bachelor's (BS) degree in computer science, management information
systems, or a related field.
- Certification in a related field (Security +, MSA, MCSE) would be
considered a plus.
- Microsoft Azure certification (AZ-900, AZ104) will be considered a
plus.

DESIRED SKILLS
- Good communication skills and a strong work ethic.
- Work as an adaptable team player.
- Working knowledge of CIS controls.
- General knowledge of Cloud technologies, such as Office 365

Minimum Experience
- 10 years of relevant experience with Microsoft Windows server
operating systems, Active Directory, Group Policies, Cyber Security,
and TCP/IP networking.

Arena Technical Resources, LLC, (ATR) is an Equal Opportunity Employer
(EOE) who will provide equal employment opportunity to employees and
applicants for employment without regard to  race, ethnicity, religion, color, sex,
pregnancy, national origin, age, veteran status, ancestry, sexual orientation,
gender identity or expression, marital status, family structure, genetic information, or
mental or disability.