ManTech International

Network Security Engineer

ManTech International$104K — $172K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Minimum 7 years of experience in Network Security Engineering or related field
  • CCNA or equivalent routing/switching certification required
  • DoD 8570 IAT Level II Certification (e.g., Security+) mandatory
  • IAT III Level certification (e.g., SecurityX) needed within 6 months of hire
  • High School Diploma or GED required
  • Bachelor's degree in engineering preferred

Responsibilities

  • Provide Tier II and III support for network security engineering
  • Monitor and configure networks with SolarWinds, Cisco Firepower FMC, and Cisco ISE
  • Create and maintain detailed network security diagrams and hardware configurations
  • Collaborate across teams to drive infrastructure initiatives
  • Engage in ITIL Service Lifecycle phases, handling Change Requests and security policies
  • Assess and recommend improvements to network security architectures
  • Conduct end-to-end functional analysis and engineering package preparation for IT environments

Benefits

  • Health Insurance
  • Life Insurance
  • Paid Time Off
  • Holiday Pay
  • Short-term and long-term Disability
  • Retirement and Savings options
  • Learning and Development opportunities
  • Wellness programs
Full Job Description
MANTECH seeks a motivated, career and customer-oriented Network Security Engineer to join our team in Chantilly, VA. This is an onsite position.

Responsibilities include but are not limited to:
  • Perform Tier II and Tier III network security engineering support, while assisting in designing advanced WAN, LAN, and data center solutions.
  • Monitor and configure networks utilizing SolarWinds, Cisco Firepower FMC, and Cisco ISE to analyze complex network requirements and ensure complete, functioning infrastructure
  • Create, maintain, and interpret highly detailed technical network security diagrams, routing topology schemas, and robust hardware configuration baselines
  • Coordinate across large internal teams, stakeholders, and Sponsor authorities to drive infrastructure agendas and successfully navigate systems engineering processes
  • Participate in all phases of the ITIL Service Lifecycle, including submitting Change Requests and maintaining security event monitoring policies
  • Evaluate current network security architectures, inventory complex routing pathways, and recommend process improvements to optimize performance and throughput
  • Deliver end-to-end functional analysis, requirements specification, cost estimation, and engineering package releases for customer production IT environments


Minimum Qualifications:
  • High School Diploma or GED with 7+ years of progressively responsible experience in Network Security Engineering, Network Analysis, or a related technical discipline
  • Cisco Certified Network Associate (CCNA) certification, or equivalent routing/switching technical certification, ex., Juniper Networks Certified Associate - Junos (JNCIA-Junos)
  • DoD 8570 IAT Level II Certification, e.g., Security+
  • DoD 8570.1 / DoD 8140.01 (IAT III Level) certification required within 6 months of hire, e.g., SecurityX


Preferred Qualifications:
  • Bachelors degree in an engineering discipline
  • Experience using and administering SolarWinds alongside deep knowledge of Microsoft Windows Systems, HP SANs, and VMware products
  • Advanced experience managing VPNs, GRE tunnels, routing protocols (BGP E/I, OSPF), VLANs, VRFs, and configuring KGs
  • Strong familiarity with Cisco ACI, data center fabric best practices, Ansible, and Desired State Configuration (DSC)
  • Strong familiarity with Cisco Secure Firewall ( Firepower FMC)
  • Practical knowledge of BICSI standards, terminating fiber and Cat 5 cabling, as well as familiarity with NSTISSAM TEMPEST/2-95 and CNSSAM TEMPEST/01-13 guidelines


Clearance Requirements:
  • Must have a current and active TS/SCI clearance


Physical Requirements:
  • The person in this position must be able to remain in a stationary position 50% 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.


The projected compensation range for this position is $104,200.00-$172,900.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH's benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

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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