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Senior, System Administrator (Cyber Infrastructure Systems)

L3Harris


Job Location:

Rochester, NH - USA

Yearly Salary: USD 92500 - 171500
Posted: 9 October 2026 (6 hours ago)
Application Deadline: 6 January 2027
Vacancies: 1 Vacancy

Job Summary

Job Title: Senior Specialist System Administrator (Cyber Infrastructure Systems)

Job Code: 45750

Job Location: Melbounre FL or Rochester NY

Job Schedule: Standard 5/8

Job Description:

We are seeking a skilled and experienced Cyber Infrastrastructure Systems Engineer (CISE) to join our team. The ideal candidate will have system administration expertise in Amazon Web Service (AWS) core services managing and optimizing Linux systems as well as infrastructure automation. This role requires a hands-on professional with a robust understanding of security and risk management and system monitoring. The candidate must have a proven track record of designing and implementing solutions that comply with security policies maintaining a secure and resilient IT environment.

Essential Functions:

  • Administer support and optimize cloud-based infrastructure within Amazon Web Services (AWS) including services such as:
    • EC2
    • S3
    • IAM
    • VPC
    • RDS
    • CloudWatch
    • Lambda
  • Configure monitor maintain and troubleshoot Red Hat Linux systems.
  • Implement and manage Infrastructure as Code (IaC) and configuration management using tools such as:
    • CloudFormation
    • Terraform
    • Ansible
  • Installation of monitoring agents STIGing and Hardening AWS AMIs
  • Monitor system performance and resource usage identify potential problems and implement solutions to maintain system resilience and security.

Qualifications:

  • Bachelors Degree with a minimum of 6 years of relevant experience or Graduate Degree with a minimum of 4 years of relevant experience or in lieu of a degree a minimum of 10 years of prior related experience.
  • Clearance: Top Secret/Sensitive Compartmented Information (TS/SCI) with Counter-Intelligence Polygraph (CI Poly)
  • DoD 8570.01-M IAT Level 2 Required Professional Certifications: CCNA- Security Security CE or higher certification

Preferred Additional Skills:

  • Experience working with continuous integration build management and automated test frameworks.
  • Experience utilizing virtualization technologies and backup solutions.
  • Experience in a dynamic fast-paced team-oriented environment.

In compliance with pay transparency requirements the salary range for this role in New York state is $92500-$171500. This is not a guarantee of compensation or salary as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits including health and disability insurance 401(k) match flexible spending accounts EAP education assistance parental leave paid time off and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire schedule type and the applicability of collective bargaining agreements.

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Required Experience:

Unclear Seniority


About Company

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At L3Harris, we anticipate and mitigate risk with agile end-to-end solutions that meet our customers' mission-critical needs across all domains.

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