Skip to main content

IT Security Support D - Jr. Systems/Network Administrator

Philadelphia, Pennsylvania

Job ID IMS20231802-97347
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: Experienced
  • Location: On Site
  • 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
  • Organised
  • 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

  • Health

    • Medical with a High Deductible and traditional PPO plan options, as well as, vision and a full array of supplemental health benefits
    • A doctors' service to help with referrals and second opinions for you, your family, and parents

  • Family

    • 4 weeks of paid parental leave for moms and dads
    • Fertility treatment
    • Subsidized backup childcare and eldercare
    • Adoption assistance - $5,000 per adoption/$15,000 per employee
    • Pet insurance

  • Well-Being

    • No cap to your PTO time (for exempt employees)
    • Dress for your day - wear what works for you at work
    • Legal plan for you, your family, and parents
    • Discount platform
    • 9/80 work schedule available for most U.S. employees, effective October 24, 2022.

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 space, air, land, sea and cyber domains. L3Harris has approximately $18 billion in annual revenue and 47,000 employees, with customers in more than 100 countries.


Job Title: IT Security Support D - Jr. Systems/Network Administrator

Job Code: IMS20231802-97347

Job Location: Philadelphia, PA

Schedule: 9/80

Job Description:

This position will perform a variety of networking, systems administration, and technical support tasks to maintain business continuity and ensure the protection of company and government property and information. Tasks may support one or more of the following areas: windows systems administration, network troubleshooting, end-user support, general security administration, access control, asset management, data retention, data collection, and record and report maintenance. Maintain security databases, logs, files, records and generate reports. May conduct periodic inventories to verify or track assets (i.e. documents, equipment, accountable material, etc.). Supports technical and non-technical security system architecture to include installation, maintenance and repair, monitoring, and administration.

Essential Functions:

  • Ensure secure area systems maintain high availability
  • Ensure data privacy and integrity
  • Provide technical and troubleshooting support as needed to ensure business continuity
  • Able to obtain and maintain a secret clearance within one year of hire


  • Requires a High School Diploma or equivalent and a minimum of 8 years of prior relevant experience; or 2 years post-Secondary/Associates Degree with a minimum of 4 years of prior related experience
  • U.S. Citizenship

Preferred Additional Skills:

  • Microsoft Certification, CompTIA Certification
  • Experience working with Windows 7, Windows 10, Server 2016, and Server 2019 Operating Systems
  • Experience working with Dell hardware
  • Experience working with Aruba switches and OS
  • Experience utilizing incident and asset management solutions, such as ManageEngine’s ServiceDesk Plus
  • Experience working with Backup Exec or similar data retention and recovery solutions
  • Experience working with Nessus or similar vulnerability scanning solutions
  • Experience working with Splunk or similar log management solutions
  • Experience working with Microsoft Development Toolkit or similar imaging and deployment solutions
  • Proficient using the Microsoft Office suite
  • Experience working in air-gapped, secure environments

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

View All Jobs

You have not saved any jobs.

View All Jobs

Awards and Recognition

Fortune 2022 - World's Most Admired Companies
2022 Bloomberg Gender Reporting Framework
Top HBCU Supporters
CEO Action
Catalyst CEO
Handshake Early Talent Award
WayUp 100 Top Internship Programs Award
2022 Readers Choice Top 50 Employers
2021 Best Employers for Veterans
2022 DEI Best Place to Work For Disability Inclusion
2022 Top 50 Employer Careers and the disABLED
Catalyst Logo
2022 Minority Engineer Magazine Top 50 Employer
2023 Hamilton Niagara's Top Employers