Skip to main content

Sr Spec, Systems Administration (TS/SCI)

Virginia; Chantilly, Virginia

Job ID SAS20211003-57894
Apply Now


Our Business and Operations team has an unwavering focus on our commitment to excellence in everything we do. They’re the backbone of our ability to deliver mission solutions with speed, innovation and flawless execution.

  • Full Time
  • Level: Varies
  • Travel: None
  • Glassdoor Reviews and Company Rating

Success Profile

What makes a successful Business and Operations team member at L3Harris?
Check out the traits we’re looking for and see if you have the right mix.

  • Collaborative
  • Detail-Oriented
  • Influential
  • Organized
  • Strategic
  • Technical


My favorite part of working for L3Harris is knowing that the parts that I procure go into products that help save lives.

Lizzie, Procurement Associate, Rochester, NY

L3Harris Work Perks

  • Career

  • Dress For
    Your Day

  • Tuition

  • Flexible

  • Parental

  • Adoption Cost

Job Description

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.

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 $18 billion in annual revenue and 48,000 employees, with customers in more than 100 countries.


Job Title: Sr. Spec, System Administrator (TS/SCI)

Job Code: SAS20211003-57894

Job Location:Chantilly, VA

Job Description:

Responsible for the internal or customer administration, maintenance and management of capacity resources for computers at the operating system and infrastructure level. Builds, configures, troubleshoots and integrates new and existing servers to provide service enhancements, application deployments and infrastructure upgrades within the physical and virtual environments. Sets up administrator and service accounts, maintains system documentation, tunes system performance, installs system-wide software, and allocates mass storage space. Recommends software and hardware enhancements, diagnoses and corrects issues, defines and implements new services with the goal of achieving maximum server uptime and availability for the customers. Responsible for monitoring performance, system usage. Contributes towards the Disaster Recovery Plan (DRP), backup systems and disk configurations. Conducts system analysis and development to keep systems current with changing technologies. 

Essential Functions:

  • Configure, monitor, maintain, patch and troubleshoot operating systems (Windows, Linux, Cisco IOS, Juniper JunOS, etc.)
  • Demonstrated experience with VMware and other virtual environment toolsets
  • Familiarity with Continuous Integration/Continuous Deployment (CI/CD), agile system development, and DevSecOps tools and processes
  • Principles of data flows and protocols (e.g., TCP/IP, OSI model, LDAP, iSCSI, Winbind, NFS)
  • Experience configuring, patching and architecting virtualization solutions (VMWare, RHOSP)
  • Experience in integrating and administering cross-domain systems
  • Experience working with and setup of Multi-factor authentication solutions
  • Experience in Model-Based Systems Engineering (MBSE)
  • Experience implementing patches, scanning, remediating findings, auditing
  • Establish and maintain up-to-date cybersecurity configurations based on DISA STIGs and IAVM Notices
  • Works with the product line and Information System Security Officer (ISSO) to create a backup plan to support disaster recovery and audit file retention
  • Works with maintenance personnel to perform necessary maintenance actions
  • Works with ISSOs supporting audits, STIG compliance, and risk assessments of identified IS vulnerabilities
  • Supports operating system patching in compliance with security policy and procedures
  • Travel up to 10%
  • Work will be performed onsite


  • Education:
    • Bachelor’s Degree and/or minimum of 6 years of prior related experience, or
    • Graduate Degree and/or a minimum of 4 years of prior related experience
  • Active TS//SCI Security Clearance is required
  • DOD 8570.01M IAT 2 certification, or ability to obtain certification within first 6 months of employment.

Preferred Additional Skills:

  • DoD 8570.01-M IAT Level 3 certification
  • Working knowledge of RMF and cybersecurity requirements
  • CISCO Unity administration
  • Experience supporting DoD/government customers
  • Demonstrated ability to work and grow in a dynamic, fast paced, team-oriented environment
  • Ability to support critical operations during standard, and on occasion, non-standard working hours
  • Experience with vulnerability scanning tools (ACAS, SCC, etc.)
  • Active TS//SCI w/CI poly Security Clearance is desireable

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your résumé for this position, you understand and agree that L3Harris Technologies may share your résumé, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

L3Harris 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.

L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.

Join Our Talent Community

Sign up for job alerts and be the first to know about our job openings.

Select a job category and/or location, then click "Add" for each saved search. Finally, click "Sign Up" to create your job alert.

Interested In

  • IS, Virginia, United StatesRemove
  • IS, Chantilly, Virginia, United StatesRemove
  • Business & Operations, Virginia, United StatesRemove
  • Business & Operations, Chantilly, Virginia, United StatesRemove

You have not saved any jobs.

View All Jobs

Awards and Recognition

Fortune 2021 - World's Most Admired Companies
Forbes 2020 Award - Worlds Best Employers
Great Place to Work
Forbes 2020 Award - World's Best Employers for Veterans
Bloomberg Gender Equality Index
Forbes 2020 Award
Top HBCU Supporters
CEO Action
Catalyst CEO
Fortune 100 Best Companies
Handshake Early Talent Award