ManTech International

Information Systems Security Engineer

ManTech International • $95K — $115K *
Crane, IN 47522In-Person
Information Technology
5 - 7 years of experience
Today
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Job Overview by Ladders

Qualifications

  • 5+ years in cybersecurity engineering, systems engineering, or network administration
  • Bachelor's degree in Computer Science or related field (6+ years' experience may substitute)
  • CompTIA Security+ certification required
  • Master's degree in a related field preferred
  • Active DoD IAT Level III certification (e.g., CISSP, CASP+ CE) preferred
  • Experience in a DoD environment preferred
  • U.S. Citizenship with active Secret clearance required

Responsibilities

  • Lead development and submission of RMF packages in government repositories
  • Conduct security control assessments and maintain continuous monitoring strategies
  • Perform automated/manual vulnerability assessments using tools like ACAS and SCAP
  • Translate findings by applying DISA Security Technical Implementation Guides (STIGs)
  • Act as liaison between software development team and Information System Security Manager
  • Participate in engineering change boards to protect system integrity
  • Analyze security logs and support incident response efforts
  • Implement secure designs and configurations, ensuring proper integration of security tools

Benefits

  • Onsite position in Crane, IN
  • Engaging with advanced security tools and practices
  • Opportunity to work closely with government security frameworks and teams
  • Chance to grow in a defense-focused cybersecurity environment
Full Job Description
MANTECH seeks a motivated, career and customer-oriented InformationSystems Security Engineer to join our team working in Crane, IN. This is an onsite position.

Responsibilities include but are not limited to:
  • Leads the development, update, and submission of the RMF packages inside government repositories (e.g., eMASS).
  • Conducts security control assessments, draft Plans of Action and Milestones (POA&Ms), and maintains system continuous monitoring strategies.
  • Performs automated and manual vulnerability assessments using tools like ACAS (Nessus) and SCAP.
  • Translates findings into action by applying Defense Information Systems Agency (DISA) Security Technical Implementation Guides (STIGs) and resolving compliance gaps.
  • Serves as the primary bridge between the software development/systems engineering team and the Information System Security Manager (ISSM).
  • Participates in engineering change boards to ensure modifications do not compromise system posture.
  • Assists in analyzing security logs, detecting anomalies, and providing system-level technical support during incident response or forensic investigations.
  • Applies system security engineering principles to implement secure designs, secure configurations, and boundary defenses (firewalls, IDS/IPS, access controls).
  • Ensures standard security tools (e.g., HBSS/ESS, ACAS, SIEM) are properly integrated

Minimum Qualifications:
  • 5+ years of direct experience in cybersecurity engineering, systems engineering, or network administration
  • Bachelor's degree in Computer Science, Information Assurance, System Engineering, or a related technical discipline. 6+ years of additional experience may substitute for the degree requirements
  • Must possess a CompTIA Security+ certification


Preferred Qualifications:
  • Master's degree in Computer Science, Computer Engineering, or related technical field
  • Active DoD 8570.01-M / DoD 8140 IAT Level III baseline certification (e.g., CISSP, CASP+ CE, or CISA)
  • Previous experience working in a DoD environment


Clearance Requirements:
  • U.S. Citizenship required and an active or current Secret clearance or ability to obtain an Interim Secret prior to starting.


Physical Requirements:
  • The person in this position must be able to remain in a stationary position 80% of the time.
  • Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.

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
Information Technology
Net Income
$120.5 million
Founded
1968
5 Year Trend
+9.8%
Revenue
$2.5 billion
NASDAQ
MANT
* Ladders Estimates

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