_{27th March, 2026}

Role: Senior macOS Systems Engineer
Location: Arlington, VA
Work Location: Onsite
Clearance: DHS Public Trust or Top Secret required.
 
Position Summary:
The Senior macOS Systems Engineer will support the Cybersecurity and Infrastructure Security Agency (CISA) Enterprise Engineering and Operations Support Services (CEEOSS) contract.

CISA plays a vital role in DHS by safeguarding the nation's cyber and physical infrastructure, and this position directly supports that mission through enterprise-class endpoint management and engineering.
 
This is mission-driven, recognizing the importance of secure, resilient IT environments in protecting national security. We are looking for a team-oriented professional who thrives in a collaborative environment, sharing expertise and contributing ideas that drive innovation, efficiency, and program improvement.

This role is best suited for a detail-oriented engineer with strong scripting and system administration skills who can also think strategically about long-term solutions.
 
DUTIES AND RESPONSIBILITIES:

• Administer and maintain Red Hat Enterprise Linux (RHEL) servers and JAMF Pro infrastructure used for macOS management.
• Apply DISA STIGs, patches, and security baselines to ensure compliance with DHS directives.
• Monitor system uptime, performance, and availability; implement corrective actions as needed.
• Develop and maintain Bash/Python scripts for automating macOS configuration, patching, and security enforcement.
• Manage JAMF databases, policies, profiles, and packages to support enterprise deployment.
• Provide Tier 4 escalation support for macOS endpoint issues.

SECURITY AND PRIVACY DUTIES AND RESPONSIBILITIES:
Individuals will be subject to security and privacy requirements as explained in HIPAA, FedRAMP, and NIST 800-53. Additionally, they are required to undergo specific FedRAMP training to ensure compliance with all associated controls and responsibilities in the day-to-day performance of their duties.

Individuals working in departments considered high-risk will be required to complete advanced training based on their role and level of access. Individuals with access to modify data and the configuration baseline will require further training.
 
The preceding functions are examples of the work performed by employees assigned to this job classification. 
Management reserves the right to add, modify, change, or rescind work assignments and make reasonable accommodations as needed.
 
QUALIFICATIONS:
Required:

• Experience with JAMF Pro administration and Red Hat Enterprise Linux (RHEL) system management.
• 5+ years administering macOS in enterprise environments.
• BS Degree in Computer Science/Engineering or related discipline.
• Strong scripting skills (Bash, Python, or equivalent).
• Knowledge of DISA STIGs, FISMA/NIST standards, and federal compliance requirements.
• Active DHS Public Trust or Top Secret security clearance is required.

Certifications
Desired:

• Apple Certified Support Professional (ACSP)
• Apple Certified IT Professional (ACITP)
• Apple Device Support
• CompTIA Security+ 

Travel:

• Ability to travel unassisted up to 10% of the year as required in support of the client and/or as directed.

PHYSICAL DEMANDS:

• Standing: 10% per day
• Sitting:60% per day
• Walking: 5% per day
• Stooping: 0% per day
• Lifting: If traveling, the ability to lift up to 50 lbs. unassisted (luggage, laptop, etc.). Up to 15 lbs. unassisted, several times a day (laptop, office equipment, office supplies, etc.)
• Computer Work: 100% per day
• Telephone Work: 60% per day
• Reading: 100% per day
• Other, please specify: Travel unassisted up to 10% per year, via aircraft or privately owned vehicle.

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