Network Operations Engineer_

Reston

**Secure our Nation, Ignite your Future**

At ManTech International Corporation, you will help protect our national security while working on innovative projects that offer opportunities for advancement.

**Clearance Required: TS/SCI**

**Location: Reston, VA**

Perform real-time monitoring and maintenance operations of network device, server assets, mission critical systems, enterprise services, and networking infrastructure across multiple physical sites on disparate networks. Serve as Tier III support to escalate and resolve technical issues on operational network environments. Collaborate across multiple engineering disciplines, resolving network incidents to ensure optimal network operation center performance and build, configure, test, harden, and decommission Windows and Linux servers. Conduct in-depth research into vendor-specific technical documentation, system event logs to identify root causes and provide expert recommendations to

resolve long-standing issues and conduct firewall changes, create or troubleshoot F5 iRules, and manage DNS entries and port security. Configure interfaces on Cisco IOS, IOS-XE, IIOS-XR, and NX-OS devices and develop and modify zone-based firewall policies on Juniper SRX Firewalls.

Support the operation and maintenance of critical Windows and Linux systems to maintain operational availability and an excellent security posture through system configuration and patching or STIGs maintenance. Log and track all work products in ticketing system, recording applied diagnostic techniques used to complete the tasks, and develop and maintain comprehensive documentation for all troubleshooting procedures, patching plans, and required fix actions. This role requires performing in an alternate work schedule to provide support for all outages on weekends and is the first point of contact during any weekend support operation.

**Must Have Qualifications:**

Bachelors Degree and 4+ years of experience with an Operations and System or Network Administration role to include the following _: Additional years of experience can be substituted in lieu of degree._

+ Experience with developing and enhancing IT troubleshooting processes

+ Experience with DoD IT security requirements, including installing patches

+ Experience with monitoring solutions, including SolarWinds, Infoblox, Splunk, or Cisco ISE

+ Knowledge of common ports and protocols and Layers 1-4 of the OSI model

+ Ability to work a modified shift hours

+ DoD 8570 Level II Security Certification, including Security+ Certification

**Nice to Have Qualifications:**

+ Experience with virtualization, including VMware and VDI

+ Experience with task automation or system orchestration via PowerShell

+ Experience with basic network administration, including switchport configuration, zone-based firewall policy management, DHCP support, and DNS management

+ Experience with managing enterprise applications, including Microsoft Exchange, JIRA, Microsoft SCCM/MECM, and Skype for Business

+ Knowledge of vulnerability and STIG scanning tools, including Nessus, SCC Tool, ACAS, and Tanium

+ Ability to extract and document user requirements

+ Possession of excellent written and verbal communication skills

Physical Requirements: Sedentary Work

For all positions requiring access to technology/software source code that is subject to export control laws, employment with the company is contingent on either verifying U.S.-person status or obtaining any necessary license. The applicant will be required to answer certain questions for export control purposes, and that information will be reviewed by compliance personnel to ensure compliance with federal law. ManTech may choose not to apply for a license for such individuals whose access to export-controlled technology or software source code may require authorization and may decline to proceed with an applicant on that basis alone.

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.

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