ManTech International

Security Engineer

ManTech International$90K — $130K *
Aerospace & Defense
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • High School Diploma/GED with 10+ years of experience, or a Bachelor's degree in Cybersecurity, Systems Engineering, or related technical field with 6-10 years of experience.
  • 3+ years supporting DoD or Intelligence Community RMF processes.
  • Experience securing hybrid cloud environments with Ansible or QEMU-KVM.
  • Experience delivering a system from registration through IATT/ATO approvals within an IC or DoD classified boundary.
  • Strong knowledge of ICD 503, NIST SP 800-53, CNSSI 1253, and DISA STIGs.

Responsibilities

  • Lead the compilation and technical writing of the Body of Evidence (BOE) for RMF pipeline milestones.
  • Utilize automated RMF tools to document and track security controls in IL6 cloud environments.
  • Review and harden automated deployment scripts for secure provisioning.
  • Deploy and manage automated scanning tools to identify and remediate vulnerabilities.
  • Audit and secure containerized environments and service mesh configurations.
  • Serve as the technical interface with NGA ISSOs and Authorizing Officials to clear security roadblocks.
  • Collaborate with stakeholders to ensure Drift Management Capability maintains security parity between environments.

Benefits

  • Opportunity to work on advanced security frameworks and cloud environments.
  • Engage in meaningful contributions to critical national security projects.
  • Potential for growth within a collaborative and innovative team framework.
  • Work in a role that integrates DevSecOps with cybersecurity compliance.
  • Be part of a mission-driven company supporting government clients.
Full Job Description
Description & Requirements

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

MANTECH seeks a motivated, career and customer-oriented Security Engineer to join our team in Springfield, VA.

This position will serve as the Assessment & Authorization (A&A) authority for the NGA MC&G CPSTN Digital Twin Pilot effort. You will work closely with the Technical Program Manager (TPM) and DevOps teams to design, implement, and maintain a robust security posture protecting a high-fidelity digital twin environment.

Responsibilities include but are not limited to:
  • Leading the compilation, organization, and technical writing of the complete Body of Evidence (BOE) required to successfully navigate the ICD 503 Risk Management Framework (RMF) pipeline for IATT and ATO milestones.
  • Utilizing automated RMF tools such as Telos XACTA to document, track, and map NIST SP 800-53 and CNSSI 1253 security controls within an IL6 cloud environment.
  • Reviewing and hardening automated deployment scripts (e.g., Ansible, Terraform) to ensure hardware abstraction models and virtual environments are provisioned securely.
  • Deploying and managing automated scanning tools-including ACAS (Nessus), SCAP Compliance Checker (SCC), and static code analysis tools-to identify and remediate system vulnerabilities.
  • Auditing and securing containerized environments and service mesh configurations to guarantee data isolation, secure transit, and continuous monitoring compliance.
  • Serving as the primary technical interface to NGA Information System Security Officers (ISSOs) and Authorizing Officials (AOs) to clear security roadblocks.
  • Working with all stakeholders to ensure the Drift Management Capability securely monitors and maintains parity between the digital twin and the live NGA CORE classified production environment.


Minimum Qualifications:
  • High School Diploma/GED with 10+ years of experience, or a Bachelor's degree in Cybersecurity, Systems Engineering, or a related technical field with 6-10 years of progressive experience.
  • 3+ years of direct experience supporting DoD or Intelligence Community (IC) RMF processes.
  • Proven experience securing hybrid cloud environments and infrastructure utilizing Ansible or QEMU-KVM architectures.
  • Direct experience delivering a system from initial registration through IATT/ATO approvals within an IC or DoD classified boundary.
  • Strong knowledge of cybersecurity frameworks including ICD 503, NIST SP 800-53, CNSSI 1253, and DISA STIGs.


Preferred Qualifications:
  • Certified Information Systems Security Professional (CISSP), CISSP-ISSEP, CISM, or CAP certification.
  • Deep familiarity with NGA networks, NGA mission threads, and specific security accreditation processes.
  • Self-starter with excellent people skills who can embed security compliance into rapid prototyping or iterative DevSecOps sprint cycles and drive change throughout an organization.


Clearance Requirements:
  • Must possess an active TS/SCI clearance and be eligible for NGA access prior to starting


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 high-level technical presentations to executive stakeholders.
  • Must be able to exchange accurate information in these situations.

About ManTech International

ManTech International Corporation is an American defense contracting firm that was founded in 1968. The company provides cybersecurity, intelligence, and defense solutions to the United States Government. ManTech has over 9,000 employees and operates in 40 countries worldwide. The company's services include software development, systems engineering, and enterprise IT solutions. ManTech has been awarded numerous contracts by the U.S. Department of Defense and other government agencies.
Learn more about ManTech International
Size
9,800 employees
Market Cap
$3.7 billion
Industry
Net Income
$120.5 million
Founded
1968
5 Year Trend
+9.8%
Revenue
$2.5 billion
NASDAQ

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