Demo

Jr Network Administrator

ClearanceJobs
Denver, CO Full Time
POSTED ON 5/7/2026
AVAILABLE BEFORE 6/7/2026

We are seeking a Jr Security System Administrator in the downtown Denver area.


This position is on site and requires a Top-Secret clearance or higher.


My client was founded to radically improve spacecraft affordability and reliability, transforming, and enabling next- generation space mission operations worldwide. Today, they are one of the most innovative aerospace companies, specializing in end-to-end customer solutions and the rapid production of spacecraft platforms. The complete Space Segment Solution includes spacecraft production, payload integration, system integration & test, launch services, ground segment services, and mission operations, enabling customers to leverage their existing technology solutions to get to orbit rapidly and responsively. We’re looking to expand our team across the board.


We are seeking a Jr System Administrator whose responsibilities include ensuring compliance with government requirements pertaining to computer systems processing classified information. The selected candidate will support classified system efforts and will perform tasks that include hardware/software configuration management (to include baseline configuration), risk assessments/vulnerability assessments, testing and documenting security controls, and ensuring overall cybersecurity compliance. The ideal candidate will have experience spanning an array of different platforms/systems and will take initiative in collaboration between cross-functional teams. The candidate must be comfortable collaborating with stakeholders to meet system requirements.


Responsibilities:

  • Provide technical inputs as needed for ground assets in support of classified systems
  • Assist with the deployment and configuration of collection services and tools
  • Collaborate with stakeholders to integrate cyber requirements into space assets throughout production and operation phases
  • Continuously evaluate/maintain system baseline in compliance with accreditation requirement
  • Maintain system boundary security configurations to include patch management, vulnerability remediation, implementing STIGs, and any additional system security configurations as needed
  • Implement systems administration tasks associated with cybersecurity control in accordance with applicable regulatory guidance and contractual requirements
  • Assist with validation and remediation validation of network servers, routers, and switches to ensure they comply with security policy, procedures, and technical requirements
  • Assist with the establishment of secured host baseline (SHB) images to be applied to multiple operating systems and DISA STIGs
  • Perform vulnerability testing using system test tools (i.e., ACAS/Nessus, Security Content Automation Protocol (SCAP), and/or Security Technical Implementation Guides (STIGs)) and remediate flaws within directed timeframe
  • Perform backups and configuration of backup repository IAW system monitoring plans
  • Identify and develop authorization boundary diagrams, architecture diagrams, and hardware and software inventories
  • Ensure that hardware, software, data, and facility resources are archived, sanitized, or disposed of in a manner consistent with system security plans and requirements
  • Participate in the change management process, and assess system impact of proposed changes
  • Report all security-related concerns and changes that may affect the system
  • Provide proactive system administration support
  • Other duties as deemed appropriate for this position


Required Qualifications:

  • Bachelor’s Degree in Information Technology, Information Systems Security, Cybersecurity, or related field or 5 years of directly related experience
  • Minimum 2 years' experience in a systems administration position for the U. S government or a U.S. government contractor
  • Security certification or equivalent
  • Currently possess a Top Secret clearance or higher
  • Proficient in Microsoft Windows and Linux operating systems
  • Experience using DISA Security Technical Implementation Guides (STIGs), Security Requirements Guide (SRGs) and Security Content Automation Protocol (SCAP) to securely configure network-enabled devices
  • Experience with anti-virus, Vulnerability Assessment, HIDS/NIDS, McAfee HBSS, Multi Factor Authentication (MFA), and Security Incident and Event Management (SIEM) and centralized auditing tools (Splunk preferred)


Preferred Experience:

  • Experience in computer hardware and software operating systems and application solutions in both stand-alone and LAN/WAN configurations
  • Ability to remediate security vulnerabilities by implementing solutions on networked devices and applications through malware identification, containment, and eradication
  • Independently capable of identifying system vulnerabilities
  • Experience in conducting software due diligence with COTS and GOTS solutions
  • Knowledge of IT security principles and methods (e.g., firewalls, demilitarized zones, encryption)
  • Knowledge of PKI, multi-factor authentication, and entitlements management
  • Working knowledge of virtualization technologies
  • Working knowledge of scripting/programming languages (PowerShell, Python, BASH)
  • Operational knowledge of switches/routers/firewalls
  • Strong communication and documentation skills
  • Positive, self-motivated individual who can complete tasks independently

Salary : $75,000 - $90,000

If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at ClearanceJobs

  • ClearanceJobs Chantilly, VA
  • AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of I... more
  • 5 Days Ago

  • ClearanceJobs Washington, DC
  • MINDBANK JOB OPENING Job Title: Team Lead / Help Desk Technician Location: Department of Navy (Pentagon) Arlington, VA (Working onsite every day) Pay Rate:... more
  • 6 Days Ago

  • ClearanceJobs Washington, DC
  • Position Description & Qualifications If you seek a rewarding, high profile and challenging position supporting projects for the US Navy, Serco has a great... more
  • 6 Days Ago

  • ClearanceJobs Arlington, VA
  • Description Position Overview System High Corporation delivers the most advanced protection and secrecy solutions to secure and strengthen critical mission... more
  • 6 Days Ago


Not the job you're looking for? Here are some other Jr Network Administrator jobs in the Denver, CO area that may be a better fit.

  • Cymertek Aurora, CO
  • Network Administrator LOCATION Aurora, CO 80014 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are lo... more
  • 27 Days Ago

  • EchoStar Corporation Englewood, CO
  • Company Summary EchoStar is reimagining the future of connectivity. Our business reach spans satellite television service, live-streaming and on-demand pro... more
  • 6 Days Ago

AI Assistant is available now!

Feel free to start your new journey!