Senior Systems Administrator Jobs
Senior Systems Administrator jobs are open across healthcare, finance, government, and technology, from mid-level to staff and principal, with specializations in cloud infrastructure, Windows and Linux environments, and virtualization. Find a role that fits from the openings below and apply directly.
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AnewHealth is one of the nation’s leading pharmacy care management companies that specializes in caring for people with the most complex, chronic needs—wherever they call home. We enable better outcomes for patients and the healthcare organizations who support them. Established in 2023 through the combination of ExactCare and Tabula Rasa HealthCare, we provide a suite of solutions that includes comprehensive pharmacy services; full-service pharmacy benefit management; and specialized support services for Program of All-Inclusive Care for the Elderly. With over 1,400 team members, we care for more than 100,000 people across all 50 states.
Job Details
Under the direction of the Manager, Servers & Storage, the Senior Systems Administrator serves as a senior technical authority responsible for maintaining, optimizing, and securing on-premises and cloud-based infrastructure assets. This role provides advanced administration, engineering, and tier-3 escalation support across server, storage, virtualization, backup/DR, and identity platforms. The ideal candidate is a subject matter expert in Microsoft Hyper-V failover clusters, Pure Storage, Windows/Linux server OS, Disaster Planning and Recovery, Active Directory, M365, and infrastructure automation. You will be able to efficiently build, maintain and monitor said infrastructures to allow AnewHealth to meet organizational objectives.
AnewHealth fosters a high-performing environment driven by our Core Values and commitment to our Patient Promise.
Responsibilities
Server & Storage Infrastructure Administration
- Build, maintain, monitor, and troubleshoot enterprise physical and virtual server infrastructure, covering Windows Server 2012 R2 through Windows Server 2025 and Enterprise Linux distributions (e.g., RHEL, CentOS, Ubuntu).
- Administer high-availability Microsoft Hyper-V failover clusters, performing host provisioning, lifecycle updates, cluster node expansions, and VM performance tuning.
- Provision, manage, and optimize enterprise SAN/NAS storage arrays, specifically Pure Storage (FlashArray and FlashBlade)
- Monitor the system daily and respond immediately to security or usability concerns.
Directory Services, Identity & Mail Flow
- Provide advanced administration and engineering for Active Directory (AD), Group Policy Objects (GPOs), and core network services (DNS, DHCP, IPAM).
- Maintain hybrid identity and mail flow environments, including Exchange 2019, Microsoft 365 / Exchange Online, Entra ID (Azure AD), Single Sign-On (SSO), Multi-Factor Authentication (MFA), and conditional access policies.
- Manage end-to-end lifecycle and bindings for internal PKI and external SSL/TLS certificates across servers, web applications, and security appliances.
Security, Patching, Monitoring & BCDR
- Design, schedule, and enforce OS and third-party automated patch management policies across Windows and Linux environments utilizing Automox.
- Configure and maintain PRTG Network Monitor to ensure proactive infrastructure alerting, custom sensor deployment, bandwidth monitoring, and system health dashboards.
- Manage enterprise backup, recovery, and business continuity architectures using Commvault, regularly executing test restores, maintaining retention standards, and updating Disaster Recovery (DR) runbooks.
Cloud, Automation & Operations
- Support and monitor public/hybrid cloud compute assets and cloud infrastructure across AWS, Azure, and GCP.
- Develop, refine, and maintain scripts using PowerShell, Python, or Shell to automate routine system administration tasks, API integrations, and bulk object operations.
- Author and maintain accurate, detailed technical documentation, system topologies, standard operating procedures (SOPs), and change control records.
- Provide Tier 3 escalation support for technical staff and end-user impacting issues.
- Other duties as assigned.
Disclaimer : The essential functions outlined above represent the primary responsibilities of this role; specific duties may vary based on operational needs. Additional responsibilities consistent with the required skills and expertise may be assigned as needed.
Qualifications & Accommodations
The listed qualifications reflect the preferred background of the ideal candidate. Candidates with equivalent skills or experience are encouraged to apply.
Education & Experience
- Education: Bachelor’s degree in Computer Science, Information Technology, or a related field.
- Experience: 5+ years of related systems administration experience, with demonstrated senior-level competency in an enterprise environment.
Technical Skills & Proficiency
- Operating Systems: Advanced mastery of Windows Server (2012 R2 through 2025) and working competency in Enterprise Linux (RHEL, CentOS, Ubuntu).
- Virtualization & Storage: Deep experience with Microsoft Hyper-V failover clustering and SAN/NAS administration (Pure Storage FlashArray / FlashBlade preferred).
- Identity & Messaging: Hands-on mastery of Active Directory, GPO, M365, Entra ID, SSO, MFA, Exchange 2019 / Hybrid, and SSL/PKI certificate management.
- Systems Tooling: Direct experience with automated patching platforms (Automox preferred), monitoring platforms (PRTG preferred), and enterprise BCDR platforms (Commvault preferred).
- Scripting & Cloud: Proficiency in PowerShell, Python, or Bash scripting, along with working knowledge of cloud services.
Skills & Abilities
- Operational Judgment: High sense of responsibility to review and approve change requests carefully, assessing risks to uptime and security when standing in for management.
- Problem-Solving & Diagnostics: Methodical approach to isolating complex performance bottlenecks, log analysis, and root-cause determination under pressure.
- Communication & Rapport: Exceptional interpersonal skills with a focus on rapport-building, listening, clear technical writing, and customer service.
- Mentorship & Documentation: Strong documentation habits and a genuine willingness to share knowledge and guide junior team members.
- Framework Awareness: Working knowledge of ITIL best practices and organizational change management.
Physical/Mental Demands & Working Conditions: This position is administrative and technical in nature and requires hearing, seeing, sitting, standing, talking, and walking. Must be able to commute to multiple site/datacenter locations within the assigned territory as needed.
Schedule: Full-time position with an expectation to work an average of 40 hours per week. Must be available outside of normal business hours or participate in an ad-hoc on-call schedule to meet maintenance windows, system updates, and operational expectations.
This is a remote position.
AnewHealth offers a comprehensive benefit package for full-time employees that includes medical/dental/vision, flexible spending, company-paid life insurance and short-term disability as well as voluntary benefits, 401(k), Paid Time Off and paid holidays. Medical, dental and vision coverage are effective 1st of the month following date of hire.
AnewHealth provides equal employment opportunity to all qualified applicants regardless of race, color, religion, national origin, sex, sexual orientation, gender identity, age, disability, genetic information, or veteran status, or other legally protected classification in the state in which a person is seeking employment. Applicants are encouraged to confidentially self-identify when applying. Local applicants are encouraged to apply. We maintain a drug-free work environment. Applicants must be eligible to work in this country.
AnewHealth is one of the nation’s leading pharmacy care management companies that specializes in caring for people with the most complex, chronic needs—wherever they call home. We enable better outcomes for patients and the healthcare organizations who support them. Established in 2023 through the combination of ExactCare and Tabula Rasa HealthCare, we provide a suite of solutions that includes comprehensive pharmacy services; full-service pharmacy benefit management; and specialized support services for Program of All-Inclusive Care for the Elderly. With over 1,400 team members, we care for more than 100,000 people across all 50 states.
Job Details
Under the direction of the Manager, Servers & Storage, the Senior Systems Administrator serves as a senior technical authority responsible for maintaining, optimizing, and securing on-premises and cloud-based infrastructure assets. This role provides advanced administration, engineering, and tier-3 escalation support across server, storage, virtualization, backup/DR, and identity platforms. The ideal candidate is a subject matter expert in Microsoft Hyper-V failover clusters, Pure Storage, Windows/Linux server OS, Disaster Planning and Recovery, Active Directory, M365, and infrastructure automation. You will be able to efficiently build, maintain and monitor said infrastructures to allow AnewHealth to meet organizational objectives.
AnewHealth fosters a high-performing environment driven by our Core Values and commitment to our Patient Promise.
Responsibilities
Server & Storage Infrastructure Administration
- Build, maintain, monitor, and troubleshoot enterprise physical and virtual server infrastructure, covering Windows Server 2012 R2 through Windows Server 2025 and Enterprise Linux distributions (e.g., RHEL, CentOS, Ubuntu).
- Administer high-availability Microsoft Hyper-V failover clusters, performing host provisioning, lifecycle updates, cluster node expansions, and VM performance tuning.
- Provision, manage, and optimize enterprise SAN/NAS storage arrays, specifically Pure Storage (FlashArray and FlashBlade)
- Monitor the system daily and respond immediately to security or usability concerns.
Directory Services, Identity & Mail Flow
- Provide advanced administration and engineering for Active Directory (AD), Group Policy Objects (GPOs), and core network services (DNS, DHCP, IPAM).
- Maintain hybrid identity and mail flow environments, including Exchange 2019, Microsoft 365 / Exchange Online, Entra ID (Azure AD), Single Sign-On (SSO), Multi-Factor Authentication (MFA), and conditional access policies.
- Manage end-to-end lifecycle and bindings for internal PKI and external SSL/TLS certificates across servers, web applications, and security appliances.
Security, Patching, Monitoring & BCDR
- Design, schedule, and enforce OS and third-party automated patch management policies across Windows and Linux environments utilizing Automox.
- Configure and maintain PRTG Network Monitor to ensure proactive infrastructure alerting, custom sensor deployment, bandwidth monitoring, and system health dashboards.
- Manage enterprise backup, recovery, and business continuity architectures using Commvault, regularly executing test restores, maintaining retention standards, and updating Disaster Recovery (DR) runbooks.
Cloud, Automation & Operations
- Support and monitor public/hybrid cloud compute assets and cloud infrastructure across AWS, Azure, and GCP.
- Develop, refine, and maintain scripts using PowerShell, Python, or Shell to automate routine system administration tasks, API integrations, and bulk object operations.
- Author and maintain accurate, detailed technical documentation, system topologies, standard operating procedures (SOPs), and change control records.
- Provide Tier 3 escalation support for technical staff and end-user impacting issues.
- Other duties as assigned.
Disclaimer : The essential functions outlined above represent the primary responsibilities of this role; specific duties may vary based on operational needs. Additional responsibilities consistent with the required skills and expertise may be assigned as needed.
Qualifications & Accommodations
The listed qualifications reflect the preferred background of the ideal candidate. Candidates with equivalent skills or experience are encouraged to apply.
Education & Experience
- Education: Bachelor’s degree in Computer Science, Information Technology, or a related field.
- Experience: 5+ years of related systems administration experience, with demonstrated senior-level competency in an enterprise environment.
Technical Skills & Proficiency
- Operating Systems: Advanced mastery of Windows Server (2012 R2 through 2025) and working competency in Enterprise Linux (RHEL, CentOS, Ubuntu).
- Virtualization & Storage: Deep experience with Microsoft Hyper-V failover clustering and SAN/NAS administration (Pure Storage FlashArray / FlashBlade preferred).
- Identity & Messaging: Hands-on mastery of Active Directory, GPO, M365, Entra ID, SSO, MFA, Exchange 2019 / Hybrid, and SSL/PKI certificate management.
- Systems Tooling: Direct experience with automated patching platforms (Automox preferred), monitoring platforms (PRTG preferred), and enterprise BCDR platforms (Commvault preferred).
- Scripting & Cloud: Proficiency in PowerShell, Python, or Bash scripting, along with working knowledge of cloud services.
Skills & Abilities
- Operational Judgment: High sense of responsibility to review and approve change requests carefully, assessing risks to uptime and security when standing in for management.
- Problem-Solving & Diagnostics: Methodical approach to isolating complex performance bottlenecks, log analysis, and root-cause determination under pressure.
- Communication & Rapport: Exceptional interpersonal skills with a focus on rapport-building, listening, clear technical writing, and customer service.
- Mentorship & Documentation: Strong documentation habits and a genuine willingness to share knowledge and guide junior team members.
- Framework Awareness: Working knowledge of ITIL best practices and organizational change management.
Physical/Mental Demands & Working Conditions: This position is administrative and technical in nature and requires hearing, seeing, sitting, standing, talking, and walking. Must be able to commute to multiple site/datacenter locations within the assigned territory as needed.
Schedule: Full-time position with an expectation to work an average of 40 hours per week. Must be available outside of normal business hours or participate in an ad-hoc on-call schedule to meet maintenance windows, system updates, and operational expectations.
This is a remote position.
AnewHealth offers a comprehensive benefit package for full-time employees that includes medical/dental/vision, flexible spending, company-paid life insurance and short-term disability as well as voluntary benefits, 401(k), Paid Time Off and paid holidays. Medical, dental and vision coverage are effective 1st of the month following date of hire.
AnewHealth provides equal employment opportunity to all qualified applicants regardless of race, color, religion, national origin, sex, sexual orientation, gender identity, age, disability, genetic information, or veteran status, or other legally protected classification in the state in which a person is seeking employment. Applicants are encouraged to confidentially self-identify when applying. Local applicants are encouraged to apply. We maintain a drug-free work environment. Applicants must be eligible to work in this country.
Senior Systems Administrator Jobs by Experience Level
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Who's Hiring
- Northrop Grumman17
- Peraton16
- Leidos11
- General Dynamics Information Technology11
- SpaceX10
Top Industries Hiring
- Technology & Software10
- Education4
- Science & Research3
- Healthcare & Medical Services3
- Staffing & Recruiting2
What Employers Look For
The qualifications that appear most often in senior systems administrator jobs.
- Five or more years of hands-on systems administration experience in enterprise environments
- Proficiency with Windows Server and Active Directory administration and management
- Experience managing Linux systems including configuration, patching, and user administration
- Hands-on experience with virtualization platforms such as VMware vSphere or Hyper-V
- Familiarity with cloud platforms including AWS, Azure, or Google Cloud infrastructure services
- Bachelor's degree in computer science, information technology, or a related technical field
Tips for Your Senior Systems Administrator Job Search
Tailor your resume to each environment
Senior systems administrator roles split sharply between Windows-heavy shops and Linux-dominant ones. Call out your primary OS environment, the hypervisors you've managed, and the scale you've operated at, whether that's a 50-node network or multi-site enterprise infrastructure.
Lead with certifications employers actually require
CompTIA Network+, Microsoft Certified: Azure Administrator, and Red Hat certifications appear repeatedly in job postings. List active certs near the top of your resume, not buried in a footnotes section, so recruiters confirm your qualifications in the first pass.
Apply early to roles that fit
Migrate Mate lists senior systems administrator openings from across the United States in one place, so you can find roles that match and apply directly to each listing.
Highlight automation and scripting contributions
Hiring managers for senior roles want proof you've reduced manual work. Name the scripts you've written in PowerShell, Python, or Bash and describe what they automated, whether patch deployment, user provisioning, or monitoring alerts, and the time or error-rate impact.
Prepare a structured answer on a major outage
Almost every senior systems administrator interview includes a question about handling a critical failure under pressure. Rehearse one clear story using a situation-action-result structure, covering how you diagnosed the issue, who you communicated with, and what you changed afterward.
Negotiate on total compensation, not just base
Senior systems administrator offers often include on-call stipends, certification reimbursement, and training budgets that vary widely between employers. Ask explicitly about each component during the offer stage so you're comparing full packages, not base salaries alone.
Senior Systems Administrator Jobs: Frequently Asked Questions
Which companies are hiring the most senior systems administrators?
The companies hiring the most senior systems administrators right now include Northrop Grumman, Peraton, and Leidos, with the largest share of openings in Maryland, Virginia, and California, based on current listings on Migrate Mate as of November 2026. Healthcare systems, defense contractors, and large financial institutions consistently maintain some of the highest ongoing demand for this role.
How many senior systems administrator jobs are remote?
About 37% of senior systems administrator openings are fully remote or hybrid as of November 2026, reflecting the fact that much of the role can be performed through remote management tools and VPN access. Cloud-focused positions and those tied to SaaS or fully virtualized environments tend to offer the highest share of remote or hybrid flexibility, while roles involving on-premises hardware maintenance typically require more on-site presence.
How do you become a senior systems administrator?
Start by building a strong foundation in networking fundamentals, operating systems, and directory services through entry-level administrator or help desk roles. Progress by taking on broader infrastructure ownership, earning vendor certifications in areas like cloud or virtualization, and demonstrating that you can manage environments with minimal supervision. Most employers expect several years of demonstrated hands-on experience before considering a candidate for a senior designation.
Can you get hired as a senior systems administrator without direct experience at that level?
Yes, if you can demonstrate that your current or previous work matches senior-level scope, even without the title. Employers focus on what you've actually managed: the size of the environment, the complexity of the infrastructure, and whether you've owned projects end-to-end. Document specific systems you administered independently, incidents you led, and any mentorship or cross-functional work you handled to make that case clearly on your resume.
What does the senior systems administrator interview process look like?
Most processes include an initial recruiter screen, a technical interview covering OS administration, networking, and scripting concepts, and at least one round with the hiring manager or infrastructure team. Some employers add a practical component where you walk through a scenario or troubleshoot a simulated problem. Final rounds often include a culture or team fit conversation, and the full process typically runs across several weeks.
Where can I find and apply to senior systems administrator jobs?
You can find and apply to senior systems administrator jobs on Migrate Mate, which lists current openings from employers across the United States. Search the available roles, find the ones that match your background and preferences, and apply directly to each listing from the same place.
See All 757+ Senior Systems Administrator Jobs
Find roles that match your experience and apply in just a few clicks.
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