Vulnerability Analyst, Senior

Mantech International Corporation San Antonio , TX 78245

Posted 4 weeks ago

Secure our Nation, Ignite your Future

Currently, ManTech is seeking a motivated, career and customer oriented Cyber Security Analyst to join our team in the San Antonio, TX area to provide unparalleled support to our customer and to begin an exciting and rewarding career within ManTech.

As a Cyber Security Analyst, you will conduct vulnerability assessments and analyze technical security weaknesses using Assured Compliance Assessment Solution (ACAS), Host Based Security Systems (HBSS) and associated information management tool sets. You will collaborate with stake holders to determine Plans of Action and Milestones (POA&Ms) for identified vulnerabilities, as well as be organizing and documenting status and collecting and documenting weekly metrics on remediation efforts.

You will operate and maintain the ACAS and HBSS solutions, to ensure network and application scanning and configuration assessments are conducted while ensuring incidents are resolved in accordance with the incident response table and client SOPs.

Responsibilities include, but are not limited to:

  • Installation, monitoring, testing, troubleshooting, and administration of the ACAS/Nessus Vulnerability Scanner applications;

  • Analyze and assist in the application of Security Technical Implementation Guides (STIGs) and Information Assurance Vulnerability Alerts (IAVAs);

  • Ensure scheduled scans are covering 100% of intended assets and are being run successfully;

  • Ensure SC is being updated regularly; address unsuccessful updates of the SC and identify the root cause of the unsuccessful update;

  • Configure, optimize, and test vulnerability scans against new and existing Operating Systems and platforms;

  • Perform Nessus vulnerability scans, Nessus agent scans, and Passive vulnerability scans;

  • Perform scan policy analysis & configuration to determine the impact of vulnerability scanning against target devices;

  • Troubleshoot credential failure issues by performing configuration analysis against the target device;

  • Conduct vulnerability analysis, research, collaborate with System Administrators to mitigate identified vulnerabilities and/or author Plans of Actions and Milestones (PO&AM) as needed;

  • Configure, operate, and maintain HBSS and its components (ePolicy Orchestrator, McAfee Agent, Data Loss Prevention, Host Intrusion Prevention System, Policy Auditor, Asset Baseline Monitor, and Virus Scan Enterprise) on Windows and Linux creating exceptions to allow essential processes to continue uninterrupted;

  • Provide guidance on vulnerability and malware remediation.


  • 5+ years of experience in the Cyber security or information assurance field

  • 3+ years knowledge and experience with ACAS Security Center (SC), Nessus administration

  • Possess understanding and experience with common cybersecurity toolsets and processes to include STIGS, ACAS, IAVA Management and Implementation, and OPORD/FRAGO support.

  • Experience with developing and presenting vulnerability information for technical and non-technical audiences

  • Must possess well-developed verbal and written communication skills

Position Requirements

  • Requires Bachelor's degree or equivalent (Computer Science or a related field)
  • IAT II: CCNA Security, CySA+, GICSP, GSEC, Security+ CE, CND, or SSCP
  • Ability to travel up to 10%

Security Requirements

  • An active and current TS/SCI clearance is required


  • Minimum of Bachelor's Degree in Computer Science or a related technical discipline or equivalent work experience.

  • Vendor certification and/or training is expected but not required in cases of established experience

  • ACAS, v5.8 Console training desired

  • HBSS 201, 301, and 501 training desired

Physical Requirements:

  • Must be able to be in a stationary position more than 50% of the time

  • Must be able to communicate, converse, and exchange information with peers and senior personnel

  • Constantly operates a computer and other office productivity machinery, such as a computer


ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.

If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at (703) 218-6000. ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply. ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services.

If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access as a result of your disability. To request an accommodation please click and provide your name and contact information.

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Vulnerability Analyst, Senior

Mantech International Corporation