Senior Cyber Security Engineer

General information

Requisition # R62512 Locations USA-VA-Reston Posting Date 08/19/2025 Security Clearance Required TS/SCI w/ Poly Remote Type Onsite Time Type Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

***This is for a future opportunity***

MANTECH seeks a motivated, career and customer-oriented Senior Cyber Security Engineer to join our team onsite in Herndon, VA or Reston, VA to design, implement, and maintain secure environments that align with compliance standards in support of a high-priority mission at one of our National Intelligence Customers.
 

Responsibilities include but are not limited to:

• Responsible for supporting the acceptance of an Authorization to Operate (ATO) for the new Modern Data Platform (MDP) transformation
• Support ISSE/ISSO tasking, including the documentation and navigation of the customer’s accreditation process for ATO
• Work closely with Security Engineers to ensure security solutions are meeting customer accreditation requirements and following security controls
• Use RMF (Risk Management Framework) NIST 800-53, NISPOM, and ICD for cybersecurity and information security protocols to drive tasking and ensure compliance
   

Minimum Qualifications:

• Bachelor’s degree in a related field OR additional equivalent work experience
• 8+ years of experience relevant to this position, including 4+ years of consulting experience
• Team lead or management experience
• Expert in System Accreditation process and protocols within the Intelligence Community
• Experience with Software Development Lifecycle, application security, Cloud principals and engineering
• Experience with NIST 800-53 and implementing Risk Management Framework
• Understanding of vulnerability assessment tools like Rapid7 or Nessus
• Knowledge of User Access Monitoring, Identity Access Management and controls. Experience in creating and reviewing system design documents and workflows
   

Preferred Qualifications:

• Master’s degree in a technical field
• Experience with Terraform, SIEM and AI/ML Governance
• Knowledge of cross-domain solutions, Zero Trust, and/or IDP (Identity Provider) integration skills
• Hands-on experience with security tools such as Splunk or CrowdStrike
• Scripting or automation experience (Python, Bash, PowerShell) to support security operations

Clearance Requirements:

• Must have active TS/SCI with Polygraph
   

Physical Requirements:

• Must be able to remain in a stationary position 50% of the time
• Needs to occasionally move about inside the office to access file cabinets, office
  machinery, etc.
• Frequently communicates with co-workers, management, and customers, which may
  involve delivering presentations. Must be able to exchange accurate information in
  these situations

MANTECH International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.