Systems Administrator
Listed on 2026-03-01
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IT/Tech
Systems Administrator, IT Support
Location: St. Louis
McCarthy Holdings, Inc. (McCarthy), is the holding entity for McCarthy Building Companies, Inc., the oldest privately‑held national construction company in America. McCarthy provides the crucial business infrastructure for these entities and connects the day‑to‑day operations to ensure seamless operations across the business. Repeatedly honored as a great place to work and healthiest employer, McCarthy is a 100 percent employee‑owned company
.
At McCarthy, we are committed to sustaining a culture that delivers great experiences for everyone. This begins with developing high‑performing individuals and teams through our award‑winning learning and development programs, best‑in‑class Total Rewards benefits, and our inclusive culture aligned with our core values:
Genuine
. We, Not I.
All In.
- We Live Our Core Values: We do whatever it takes to deliver on our promises with honesty and integrity.
- We are Employee Owned: We are personally invested in building the things people need in our communities.
- We Feel Like a Family: We value genuine connections and help each other succeed in an inclusive environment.
- We are Builders: We respect the work we do and everyone who helps make it happen safely.
McCarthy Holdings, Inc. is seeking a skilled and motivated Systems Administrator I to join our Server Operations Team. As a Systems Administrator I, you will play a crucial role in ensuring the stability, security, and performance of our IT infrastructure, including installation, configuration, troubleshooting, and maintenance of business‑critical systems vital to daily operations. The Systems Administrator I must adhere to the company SLA for system uptime and customer response.
This position reports to the Systems Team Lead.
- General level 3 support for help desk and end users in the areas of Server, Storage, AD Account management, Cloud operations and Microsoft 365 Administration.
- Active Directory and Azure AD (Entra ) basic administration including user/group management.
- Exchange and SharePoint Online administration and support.
- Perform routine system maintenance tasks, including software updates, server patch management, vulnerability remediation, system backups and quarterly restore testing.
- Configure, maintain, and optimize servers, both physical and virtual, to support various applications and services. Primarily Windows Server OS.
- OKTA authentication and configuration of new SSO/SAML applications and troubleshooting authentication issues and changes.
- Monitor system performance and troubleshoot issues proactively to ensure optimal system uptime.
Data archival/recovery, configuration, maintenance, and troubleshooting. - Providing support to various groups for email searches, legal discovery, or legal hold procedures.
- Implement security best practices and remediations to protect the infrastructure from potential threats and vulnerabilities.
- Maintain accurate and up-to-date documentation of system configurations, procedures, and troubleshooting guides.
- 2 years of experience as a System Administrator or similar role.
- Strong listening, communication, collaboration and interpersonal skills.
- Strong organizational skills.
- Ability to work with a team and individually.
Strong desire to provide exceptional customer service. - Driven to evaluate and recommend continuous improvement initiatives.
- Strong knowledge of Windows Server Operating Systems.
- Strong understanding of security best practices.
- Basic experience with writing Power Shell scripts to perform administrative tasks.
- Basic knowledge of Microsoft Active Directory, Azure AD and SSO.
- Basic knowledge of Office 365 (account/mailbox creation and troubleshooting).
- Experience with backup software/hardware operation and configuration.
McCarthy is proud to be an equal opportunity employer, including disability and protected veteran status.
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