Information Technology System Administrator - Senior Specialist E4

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Join Our Team! We seek the best talent and compensate accordingly. Radix is an inclusive workplace that fosters a professional, casual work environment and a leadership structure that enables collaboration and potential for employees to have daily impact on the Company’s success.

Top Reasons Why You Want to Work for Radix as a Systems Administrator Small Company Culture Relaxed Flexible Work Environment Competitive Wages Medical, Dental, & Vision Premiums 100% Employer Funded Short-Term, Long-Term Disability, & Life Premiums 100% Employer Funded Company Funded Retirement plan of up to 25% of Base Salary6 weeks of Paid Time Off (PTO)
Professional Development and Educational Benefits Job Overview The IT / Systems Administrator is responsible for the installation, maintenance, operation, and security of Radix Metasystems’ IT infrastructure, including networks, devices, software, web applications, and user accounts. This role provides Tier I–III technical support and ensures appropriate access and permission controls across enterprise systems. The IT / Systems Administrator works collaboratively with technical teams, security personnel, and business stakeholders to maintain system performance, reliability, and compliance with organizational and regulatory standards.

This position operates in a fast-paced and evolving technical environment and plays a critical role in maintaining operational continuity and cybersecurity posture.

Responsibilities and Duties:

Administer and maintain daily IT operations and infrastructure

Implement and support IT strategies, infrastructure improvements, and system modernization initiatives

Provide Tier I–III technical support for end users, including troubleshooting hardware, software, network, VOIP, and access-related issues

Install, configure, and maintain Windows enterprise domain software and applications

Deploy software updates and manage software licensing to ensure compliance

Manage, maintain, deploy, and track company hardware assets

Sanitize, decommission, and properly dispose of end-of-life (EOL) IT equipment

Create, modify, delete, and maintain user accounts and permissions across on-premises, local, and SaaS environments

Conduct IT on-boarding and off-boarding processes for employees

Maintain and support network infrastructure including firewalls, VPNs, switches, wireless access points, and secure network access configurations

Configure and maintain cloud computing services and remote access technologies

Experience administering Red Hat Enterprise Linux (RHEL) workstation and server environments

Experience managing RHEL using command-line tools and shell scripting (Bash or equivalent)
Experience managing user authentication and authorization including SSSD, LDAP, and/or Active Directory integration

Experience performing system patching and package management using YUM/DNF and Red Hat repositories or Satellite Identify, assess, and mitigate system security risks

Collaborate with ISSM/ISSO personnel to implement and maintain systems in accordance with RMF 800-53, NIST 800-171, and CMMC Moderate compliance standards

Maintain documentation supporting change management and configuration management processes

Perform system data backup, restoration, and disaster recovery support activities

Support setup and deployment of new office or remote work environments as required

Communicate effectively across departments to support operational needs

Promote and reinforce Radix Metasystems’ culture and values

Other duties as assigned

Primary Location(s):

Radix Metasystems HQ, Englewood, CO

Required Qualifications:

U.S. Citizenship Currently active TS/SCI security clearance issued by a U.S. Government Entity Currently active Counterintelligence polygraph adjudicated by a U.S. Government Entity Must be able to provide 24/7 on-call support on an as-needed basis (this is rare)
Bachelor’s degree in Information Technology, Computer Science,…