Systems Administrator 3

in Rockwall, TX

Systems Administrator 3 Job

Job Description Job Attributes+

  • Job ID


  • Req #


  • Organization

    Advanced C2ISR Sector-20000033

  • Job Category


  • Job Location

    Rockwall, TX, US

  • Job Type


  • Clearance Level


  • Career Level


  • Schedule


  • Shift

    Day - 1st

  • Travel

    Yes, 10 % of the Time

  • Remote


Systems Administrator
L3Harris is dedicated to recruiting and developing diverse, high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.
L3 Harris ComCept is located in Rockwall, Texas, just 30 minutes from the heart of downtown Dallas. We are a results driven organization, focused on innovation and the delivery of quality products and services to our customers who are experiencing rapid growth and increasing market share which provides excellent career advancement potential.
Job Description:   
L3Harris-ComCept is seeking a System Administrator to provide day-to-day maintenance for Windows & Linux Server production systems and associated network infrastructures at their location in Rockwall, TX.  This System administrator will be responsible to ensure that the performance and availability of the server and network infrastructures are maintained to the highest standards in order that maximum productivity is achieved. The successful candidate will manage all hardware and equipment, including routers, switches, firewalls, IDS/IPS, servers, storage, backup systems, workstations and their associated operating systems and/or software. Additional responsibilities will include review, recommendation, and implementation of security requirements for all systems on the network; capacity planning; and ensuring compliance with corporate and government policies.
We are proud to be an EEO/AA employer M/F/D/V. We maintain a drug-free workplace and perform pre-employment substance abuse testing.  The applicant will support various DoD programs.  Applicants selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information.

Job Qualifications

Required Skills (specialized experience/knowledge/skills for this job):
5 years of experience in one or more of the following areas: System/Server Administration, Network Administration, Desktop and LAN Support.  Additional experience/knowledge/skills:
  • U.S. Citizenship is required
  • Active Secret or higher security clearance
  • Bachelor’s Degree in related discipline.  A combination of education and experience may be considered in lieu of a degree
  • Experience with Microsoft Windows 10, Server 2012 R2 & 2016
  • Experience with switches, routers and firewalls
  • Knowledge of Microsoft Office, WSUS & DNS
  • Strong troubleshooting and analytical skills
  • Working Knowledge of upgrading hardware and software
  • Strong verbal and written communications skills
  • Positive customer service attitude
  • Ability to lift/move information system equipment up to 50 lbs.
  • DoD 8570.01M compliant IA Baseline certification (e.g. Security , CISSP, etc.) or be able to obtain it within 6 months of hire
Desired Skills (other skills/abilities which will be helpful):
  • Knowledge of Data backup and recovery methods and tools (e.g. Symantec NetBackup Exec)
  • Experience with Linux Operating Systems
  • Computing Environment Certification(s) such as MCSE, CCNA, RHCSA,etc.
  • Experience with DISA Enterprise circuits
  • Experience with Check Point and F5 firewalls
  • Experience with information security tools such as Splunk, ACAS (NESSUS), HBSS, DISA SCAP/STIG, Anti-Virus, etc
About L3Harris Technologies
L3Harris Technologies is an agile global aerospace and defense technology innovator, delivering end-to-end solutions that meet customers’ mission-critical needs. The company provides advanced defense and commercial technologies across air, land, sea, space and cyber domains. L3Harris has approximately $17 billion in annual revenue, 50,000 employees and customers in more than 130 countries.
L3 Harris Technologies is proud to be an Affirmative Action/Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Additional Information

Who We Are

L3 is proud to employ more than 7,700 veterans of the U.S. military, helping them use their unique training and skills to meet our customers' needs.

Many of L3's top business leaders are former military personnel who provide critical insight and support for using L3's advanced technology and services to protect our country's freedoms.

Be part of our mission. be L3!

Learn more at

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