Senior Systems Administrator Jobs in Colorado
Senior Systems Administrator jobs in Colorado are concentrated in the Denver metro, Colorado Springs, and Boulder, where demand from defense contractors, federal agencies, and technology firms keeps openings competitive at the senior level. Large employers such as Lockheed Martin, Centura Health, and the University of Colorado maintain substantial IT infrastructure operations across the state and hire regularly for this role. The most in-demand specialties are enterprise virtualization, cloud infrastructure management, and Active Directory and identity management. Scan the live roles below and apply to whichever ones fit.
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Showing 5 of 25+ Senior Systems Administrator jobs
L3Harris is dedicated to recruiting and developing 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 is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.
Job Description:
We are seeking a skilled and experienced Cyber Infrastructure Systems Engineer (CISE) to join our Colorado Springs, CO team. This role requires an experience system administrator to support mission-critical systems and infrastructure in a secure environment. The ideal candidate will have deep experience administering complex enterprise systems, maintaining secure AWS infrastructure, supporting cybersecurity compliance, and enabling modern development and CI/CD platform operations. This role requires strong technical expertise in Red Hat Enterprise Linux (RHEL), AWS technologies, platform engineering, and secure systems administration practices.
Essential Functions:
- Deploy, manage, and optimize AWS cloud infrastructure supporting mission and business applications.
- Utilize cloud technologies such as Amazon Web Service (AWS) Amazon Machine Images (AMI)
- Support and maintain CI/CD pipeline platforms to enable secure and efficient software delivery.
- Collaborate with software development, DevSecOps, and cybersecurity teams to integrate infrastructure and platform services.
- Automate system administration tasks using scripting and infrastructure-as-code approaches where applicable.
- Utilize virtualization technologies such as KVM, VMware, vSphere/vCenter, and microservices/containers (e.g., OpenShift, Docker) to enhance system functionality and efficiency.
- Implement and maintain security controls in compliance with DoD security frameworks and RMF requirements, integrating RMF principles into ground-up builds and ongoing security administration.
Qualifications:
- Bachelor’s Degree with a minimum of 4 years of relevant experience, or Graduate Degree with a minimum of 2 years of relevant experience, or in lieu of a degree, a minimum of 8 years of prior related experience.
- Secret Clearance
- DoD 8570.01-M IAT Level 2 Required Professional Certifications: CCNA- Security, Security+ CE, or higher certification'
Preferred Additional Skills:
- Knowledge of Kubernetes, containers, or OpenShift platform administration.
- Experience with Infrastructure as Code tools such as Terraform or Ansible.
- Familiarity with DevSecOps practices and secure software development environments.
- Experience with centralized logging, monitoring, and endpoint security tools.
In compliance with pay transparency requirements, the salary range for this role in Colorado state is $80,500-$149,500. 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.
The application window for this position will close on 11/10/2026.
#LI-ZB2
L3Harris Technologies is proud to be an 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.
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 resume for this position, you understand and agree that L3Harris Technologies may share your resume, 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 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.
L3Harris is dedicated to recruiting and developing 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 is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.
Job Description:
We are seeking a skilled and experienced Cyber Infrastructure Systems Engineer (CISE) to join our Colorado Springs, CO team. This role requires an experience system administrator to support mission-critical systems and infrastructure in a secure environment. The ideal candidate will have deep experience administering complex enterprise systems, maintaining secure AWS infrastructure, supporting cybersecurity compliance, and enabling modern development and CI/CD platform operations. This role requires strong technical expertise in Red Hat Enterprise Linux (RHEL), AWS technologies, platform engineering, and secure systems administration practices.
Essential Functions:
- Deploy, manage, and optimize AWS cloud infrastructure supporting mission and business applications.
- Utilize cloud technologies such as Amazon Web Service (AWS) Amazon Machine Images (AMI)
- Support and maintain CI/CD pipeline platforms to enable secure and efficient software delivery.
- Collaborate with software development, DevSecOps, and cybersecurity teams to integrate infrastructure and platform services.
- Automate system administration tasks using scripting and infrastructure-as-code approaches where applicable.
- Utilize virtualization technologies such as KVM, VMware, vSphere/vCenter, and microservices/containers (e.g., OpenShift, Docker) to enhance system functionality and efficiency.
- Implement and maintain security controls in compliance with DoD security frameworks and RMF requirements, integrating RMF principles into ground-up builds and ongoing security administration.
Qualifications:
- Bachelor’s Degree with a minimum of 4 years of relevant experience, or Graduate Degree with a minimum of 2 years of relevant experience, or in lieu of a degree, a minimum of 8 years of prior related experience.
- Secret Clearance
- DoD 8570.01-M IAT Level 2 Required Professional Certifications: CCNA- Security, Security+ CE, or higher certification'
Preferred Additional Skills:
- Knowledge of Kubernetes, containers, or OpenShift platform administration.
- Experience with Infrastructure as Code tools such as Terraform or Ansible.
- Familiarity with DevSecOps practices and secure software development environments.
- Experience with centralized logging, monitoring, and endpoint security tools.
In compliance with pay transparency requirements, the salary range for this role in Colorado state is $80,500-$149,500. 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.
The application window for this position will close on 11/10/2026.
#LI-ZB2
L3Harris Technologies is proud to be an 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.
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 resume for this position, you understand and agree that L3Harris Technologies may share your resume, 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 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.
See All 25 Senior Systems Administrator Jobs in Colorado
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Find JobsSenior Systems Administrator Jobs by City in Colorado
Where Colorado roles are concentrated, by current openings.
Senior Systems Administrator Job Market in Colorado
A snapshot from current Colorado openings, updated as new roles post.
Who's Hiring
What Colorado Employers Look For
The qualifications that appear most often in senior systems administrator jobs across Colorado.
- Bachelor's degree in computer science, information technology, or a related field required
- Five or more years of hands-on systems administration experience in enterprise environments
- Active Microsoft Certified Solutions Expert or equivalent certification strongly preferred
- Deep experience with virtualization platforms such as VMware vSphere or Microsoft Hyper-V
- Demonstrated proficiency managing Active Directory, Group Policy, and identity management systems
- Experience with cloud platforms including Azure or AWS in hybrid on-premises environments
Senior Systems Administrator Jobs in Colorado: Frequently Asked Questions
How do you become a senior systems administrator in Colorado?
Senior systems administrator roles in Colorado do not require a state-issued license, so the path runs through education and vendor credentials. Most Colorado employers expect a bachelor's degree in information technology, computer science, or a related discipline, along with several years of progressive infrastructure experience. Certifications such as Microsoft's MCSE, CompTIA's Server+, or VMware's VCP carry real weight in Colorado hiring, particularly with defense and healthcare employers that dominate the market.
How much do senior systems administrators make in Colorado?
Senior systems administrators in Colorado earn a median of about $103,370 a year, based on May 2025 Bureau of Labor Statistics wage data, ranging from around $74,110 for the lowest 10% to over $155,050 for the top 10%. Pay rises with experience, specialty, and employer.
Which companies hire senior systems administrators in Colorado?
Colorado senior systems administrator roles are posted by Northrop Grumman, L3Harris, and BAE Systems USA and others right now, based on current listings on Migrate Mate as of September 2026. Colorado's dense concentration of federal contractors, large hospital networks, and technology companies means demand for this role is spread across a wide range of industries rather than clustering in a single sector.
Which Colorado cities have the most senior systems administrator jobs?
Aurora, Colorado Springs, and Denver lead Colorado for senior systems administrator openings. The Denver metro drives the largest share because it is home to major healthcare systems, financial institutions, and federal agency regional offices, while Colorado Springs draws consistently from its deep base of military installations and defense contractors that depend on large, managed IT environments.
Are there remote senior systems administrator jobs in Colorado?
Yes, though they are less common than in purely software-focused roles because senior systems administrators frequently need to be on-site to manage physical hardware, data center infrastructure, and network equipment. About 40% of senior systems administrator openings tied to Colorado are remote or hybrid as of September 2026, with remote availability more common in positions focused on cloud infrastructure, monitoring, and policy management than in those involving hands-on server or network hardware work.
How can I get hired as a senior systems administrator in Colorado with little or no experience?
The most realistic entry path is through a junior or associate systems administrator role at a Colorado employer that promotes from within, such as large healthcare networks, state agencies, or federal contractors based in the Denver metro and Colorado Springs. Roles like help desk technician, IT support specialist, or desktop support analyst at these organizations often serve as the on-ramp. Earning a CompTIA A+ or Network+ certification before applying signals readiness, and some Colorado government agencies and university IT departments offer structured entry-level programs for candidates who show that foundational credential.
Where can I find and apply to senior systems administrator jobs in Colorado?
You can find and apply to senior systems administrator jobs in Colorado on Migrate Mate, which lists current Colorado openings. Search the roles available, find the ones that match your experience and location, and apply directly to the ones that fit.
See All 25 Senior Systems Administrator Jobs in Colorado
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