Senior Systems Administrator Jobs in Missouri
Senior Systems Administrator jobs in Missouri are concentrated in Kansas City and St. Louis, with secondary hiring across Columbia and Springfield, where employers like Cerner (Oracle Health), Edward Jones, and Mercy Health maintain large infrastructure teams. Demand is strongest for administrators with deep experience in Windows Server environments, VMware virtualization, and enterprise network management. Missouri's healthcare, financial services, and government contracting sectors keep consistent openings at the senior level throughout the year. Scan the live roles below and apply to whichever ones fit.
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Showing 5 of 16+ Senior Systems Administrator jobs
This full-time position is located within Central Technology Services and works from our Jefferson City location. The Azure / Microsoft 365 Systems Engineer is responsible for the design, administration, security, and ongoing support of the bank's Microsoft cloud and hybrid infrastructure and plays a key role in ongoing cloud migration and modernization initiatives.
Key Responsibilities
- Provide day-to-day administration, monitoring, configuration, permissions management, and service health oversight across Microsoft Azure, Microsoft 365, Exchange Online, SharePoint Online, OneDrive, Teams, Power Platform, Fabric, GitHub, and on-premises Active Directory, DNS, DHCP, Group Policy, and ADFS.
- Design, deploy, maintain, patch, and update Azure and hybrid infrastructure supporting virtual machines, networking, storage, connectivity, identity synchronization, and related platform configuration changes.
- Develop and maintain PowerShell scripts to automate provisioning, administration, reporting, and routine maintenance tasks.
- Troubleshoot incidents and provide Tier II/Tier III escalation support while monitoring system health, performance, capacity, availability, and uptime.
- Support enterprise migration, modernization, and cloud-hosted application initiatives, including on-premises file and print migrations to SharePoint Online, workload movement to Azure, Dynamics CRM, Microsoft Fabric, and related business applications.
- Ensure systems meet internal security standards, regulatory requirements, and operational best practices; support audit and examination requests as needed.
- Document configurations, procedures, and support processes; collaborate with infrastructure, security, application, business, and project teams on operational consistency and continuous improvement.
Requirements
- 5+ years in a Systems Engineer, Systems Administrator, Cloud Engineer, or similar role.
- On-premises domain administrator experience supporting Active Directory, Group Policy, DNS, DHCP, ADFS, SCOM, and Windows Server operating systems.
- Microsoft 365 Global Administrator experience managing Exchange Online, SharePoint Online, Teams, OneDrive, Power Platform, Fabric, app registrations, SSO, tenant permissions, security, compliance, and access controls.
- Strong understanding of Microsoft Entra ID, hybrid identity, identity synchronization, authentication, conditional access, MFA, and access management.
- Proficiency with PowerShell for administration, reporting, and automation of repetitive tasks.
- Experience administering and supporting Microsoft SQL Server, including installation, maintenance, backup and recovery, and performance monitoring.
- Relevant Microsoft certifications (Azure Administrator, Microsoft 365 Administrator, Identity and Access Administrator, or similar) preferred.
- Strong troubleshooting, documentation, communication, and customer service skills, with the ability to work independently and a continuous improvement mindset.
This full-time position is located within Central Technology Services and works from our Jefferson City location. The Azure / Microsoft 365 Systems Engineer is responsible for the design, administration, security, and ongoing support of the bank's Microsoft cloud and hybrid infrastructure and plays a key role in ongoing cloud migration and modernization initiatives.
Key Responsibilities
- Provide day-to-day administration, monitoring, configuration, permissions management, and service health oversight across Microsoft Azure, Microsoft 365, Exchange Online, SharePoint Online, OneDrive, Teams, Power Platform, Fabric, GitHub, and on-premises Active Directory, DNS, DHCP, Group Policy, and ADFS.
- Design, deploy, maintain, patch, and update Azure and hybrid infrastructure supporting virtual machines, networking, storage, connectivity, identity synchronization, and related platform configuration changes.
- Develop and maintain PowerShell scripts to automate provisioning, administration, reporting, and routine maintenance tasks.
- Troubleshoot incidents and provide Tier II/Tier III escalation support while monitoring system health, performance, capacity, availability, and uptime.
- Support enterprise migration, modernization, and cloud-hosted application initiatives, including on-premises file and print migrations to SharePoint Online, workload movement to Azure, Dynamics CRM, Microsoft Fabric, and related business applications.
- Ensure systems meet internal security standards, regulatory requirements, and operational best practices; support audit and examination requests as needed.
- Document configurations, procedures, and support processes; collaborate with infrastructure, security, application, business, and project teams on operational consistency and continuous improvement.
Requirements
- 5+ years in a Systems Engineer, Systems Administrator, Cloud Engineer, or similar role.
- On-premises domain administrator experience supporting Active Directory, Group Policy, DNS, DHCP, ADFS, SCOM, and Windows Server operating systems.
- Microsoft 365 Global Administrator experience managing Exchange Online, SharePoint Online, Teams, OneDrive, Power Platform, Fabric, app registrations, SSO, tenant permissions, security, compliance, and access controls.
- Strong understanding of Microsoft Entra ID, hybrid identity, identity synchronization, authentication, conditional access, MFA, and access management.
- Proficiency with PowerShell for administration, reporting, and automation of repetitive tasks.
- Experience administering and supporting Microsoft SQL Server, including installation, maintenance, backup and recovery, and performance monitoring.
- Relevant Microsoft certifications (Azure Administrator, Microsoft 365 Administrator, Identity and Access Administrator, or similar) preferred.
- Strong troubleshooting, documentation, communication, and customer service skills, with the ability to work independently and a continuous improvement mindset.
See All 16 Senior Systems Administrator Jobs in Missouri
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Find JobsSenior Systems Administrator Jobs by City in Missouri
Where Missouri roles are concentrated, by current openings.
Senior Systems Administrator Job Market in Missouri
A snapshot from current Missouri openings, updated as new roles post.
Who's Hiring
Top Industries Hiring
- Law & Legal Services
What Missouri Employers Look For
The qualifications that appear most often in senior systems administrator jobs across Missouri.
- Five or more years of hands-on experience administering enterprise Windows Server and Active Directory environments
- Proficiency with virtualization platforms such as VMware vSphere or Microsoft Hyper-V in production settings
- Experience designing and maintaining enterprise network infrastructure including firewalls, switches, and VPNs
- Relevant certification such as Microsoft Certified: Windows Server Hybrid Administrator or CompTIA Server+
- Demonstrated ability to lead IT projects and mentor junior administrators across a team
- Familiarity with backup, disaster recovery planning, and compliance frameworks such as NIST or HIPAA
Senior Systems Administrator Jobs in Missouri: Frequently Asked Questions
How do you become a senior systems administrator in Missouri?
Missouri does not require a state-issued license to work as a senior systems administrator, so the path runs through education and vendor credentials. Most employers in Kansas City and St. Louis look for a bachelor's degree in computer science, information technology, or a related field, combined with several years of progressive infrastructure experience. Industry certifications like Microsoft Certified: Windows Server Hybrid Administrator, CompTIA Server+, or VMware VCP are consistently valued by Missouri employers and help candidates move into senior roles faster.
How much do senior systems administrators make in Missouri?
Senior systems administrators in Missouri earn a median of about $80,870 a year, based on May 2025 Bureau of Labor Statistics wage data, ranging from around $52,190 for the lowest 10% to over $129,610 for the top 10%. Pay rises with experience, specialty, and employer.
Which companies hire senior systems administrators in Missouri?
Employers hiring senior systems administrators in Missouri right now include State of Missouri, Forward Slash Technology, and Intellivo, based on current listings on Migrate Mate as of September 2026. Missouri's concentration of large healthcare systems, financial institutions, and government contractors means steady demand for experienced infrastructure professionals across the state.
Which Missouri cities have the most senior systems administrator jobs?
St. Louis, Kansas City, and Jefferson City have the most senior systems administrator openings in Missouri. Kansas City and St. Louis drive the bulk of hiring because of their dense clusters of healthcare networks, financial services firms, and enterprise IT departments, while Columbia and Springfield contribute openings tied to their regional hospital systems and state government offices.
Are there remote senior systems administrator jobs in Missouri?
Yes, but they're less common than for purely desk-based roles because senior systems administrators frequently need to be on-site to manage hardware, respond to outages, and maintain physical infrastructure. About 33% of senior systems administrator openings tied to Missouri are remote or hybrid as of September 2026, and remote availability tends to be highest for monitoring, scripting, and cloud-management responsibilities rather than data center or hands-on network work.
How can I get hired as a senior systems administrator in Missouri with little or no experience?
The most realistic entry path is starting as a help desk technician or junior systems administrator and building experience with Windows Server, Active Directory, and networking fundamentals. Large Missouri employers like Mercy Health, BJC HealthCare, and state government agencies regularly bring on entry-level IT staff who can grow into infrastructure roles. Earning a CompTIA A+ or Network+ credential and then pursuing a Microsoft or VMware certification gives candidates a concrete edge when applying to those first infrastructure positions.
Where can I find and apply to senior systems administrator jobs in Missouri?
You can find and apply to senior systems administrator jobs in Missouri on Migrate Mate, which lists current Missouri openings updated regularly. Search the roles available, find the ones that match your experience and location preferences, and apply directly to the employers posting them.
See All 16 Senior Systems Administrator Jobs in Missouri
Find roles in Missouri that match your experience and apply in just a few clicks.
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