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Job #: R-00027418
Location: Fort Meade, MD
Category: Security Architecture and Engineering
Schedule (FT/PT): Full Time
Travel Required: Yes, 10% of the time
Shift: Day
Potential for Telework: No
Clearance Required: Top Secret
Referral Eligibility: Eligible
Group: Defense

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Job Description:

Leidos Defense Group has a current job opportunity for a Network Security Architect/Engineer at Ft. Meade, MD.

The candidate will be a member of the Cyber Security Service Provider (CSSP) Team on the DISA GSM-O program in support of DISA Task Order 29. Perform network architecture reviews, and provide recommendations on network security strategy, and network instrumentation to support defensive cyber operations. The employee might travel 10% of the time.

•Conduct interviews with customers to identify and make recommendations for security tools and capabilities to meet customer security requirements.
•Research and Develop Defensive Cyber Operations (DCO) security data strategies to include boundary and endpoint specific to CSSP service portfolio.
•Manage the process to request, track, and validate CSSP data requirements across multiple Areas of Responsibility (AOR).
•Engineer and provide the customer, vendor and Mission owner-specific cloud and endpoint security data acquisition strategies.
•Act as primary CSSP-driven liaison between the program and Data Brokering, concerning the continual refinement of cloud and endpoint data ingest.
•Continually adjust CSSP cloud and endpoint data defined in DCO Data Action Plan, based on measurement of effectiveness.
•Conduct network security architecture reviews to determine the size, and placement of intrusion monitoring equipment during the customer onboarding process.
•Conduct periodic architectural reviews of installed sensors to assess effectiveness and propose optimal installation alternatives as required.
•Conduct periodic reviews of sensor metric reports to evaluate and prioritize sensors for review and assessment
•Engage with customers and the DISA team of stakeholders to continually assess and verify sensor service issues.
•Function as network security design and architecture Subject Matter Expert (SME) in support of DISA Task Order 29.
•Conduct and deliver weekly status updates to customer.


•Bachelor's Degree with 8+ years of experience;additional work experience may be used in lieu of a degree.
•Must have DoD 8570 IAT Level 2 certification (Security+, CCNA Security, or equivalent).
•Experience with designing and securing enterprise network environments (traditional and virtual).
•Experience with designing and securing internal and public/private cloud-based environments
•In-depth understanding of network security best practices and methodologies.
•Experience in DCO utilizing Sysmon and Windows Event Collection/Forwarding
•Must have Top Secret clearance w/ SCI Eligibility.

•Active TS/SCI clearance.
•Experience w/ DoD and DISA Networks.
•Experience with IDS/IPS, FirePOWER, SourceFire, NGIPSv, SNORT, Suricata, Splunk, Palo Alto NGFW, SPAN and TAP.
•Experience w/ cloud security strategy.
•Knowledge of DoD Cloud Computing Security Requirements Guide (CC SRG).
•Knowledge of Federal Risk and Management Program (FedRAMP).
•Experience in DCO using Sysmon and Windows Event Collection/Forwarding.
•Experience with Endpoint Detection and Response Solutions, Carbon Black, Tanium, Cisco AMP.
•Experience w/ MPLS, VRF, technologies including VPC, VDC.


External Referral Eligible

External Referral Bonus:


Potential for Telework:


Clearance Level Required:

Top Secret


Yes, 10% of the time

Scheduled Weekly Hours:




Requisition Category:


Job Family:

Security Architecture and Engineering


Leidos is a Fortune 500® information technology, engineering, and science solutions and services leader working to solve the world's toughest challenges in the defense, intelligence, homeland security, civil, and health markets. The company's 33,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $10.19 billion for the fiscal year ended December 28, 2018. For more information, visit

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