Senior Systems Administrator – On-Prem & Cloud Infra

ManhattanLife Insurance & Annuity Company; Houston (TX); On-site; USD 85,000 - 110,000; Full time

Job summary

ManhattanLife Insurance & Annuity Company seeks a Senior Systems Administrator to own on-premises infrastructure and integrate cloud services. You will manage Windows and Linux servers, Active Directory, Azure, and security controls, with hands-on responsibility for migrations, testing, and stabilization.

Expect collaboration across IT teams and a focus on secure, repeatable deployments. The role emphasizes design through deployment, robust documentation, and mentorship, with a practical

Qualifications

• Five+ years of hands-on production infrastructure experience or equivalent.
• Experience administering Windows Server, AD, DNS, DHCP, and Exchange Online.
• Experience with Linux server administration, patching, monitoring and troubleshooting.

Responsibilities

• Design and implement on-premises infrastructure from requirements to deployment and stabilization.
• Configure, test, and place Windows/Linux servers and virtualization into production.
• Lead migrations, upgrades, and office integrations with documented rollback plans.
• Automate deployments, health checks, and reporting using PowerShell, Bash, or Azure CLI.

Skills

Windows Server

Active Directory

Azure

VMware

PowerShell

Education

High School degree or equivalent

Tools

VMware vSphere

Azure CLI

Bash

Terraform

Job description

ManhattanLife Insurance & Annuity Company seeks a Senior Systems Administrator to own on-premises infrastructure and integrate cloud services. You will manage Windows and Linux servers, Active Directory, Azure, and security controls, with hands-on responsibility for migrations, testing, and stabilization.

Expect collaboration across IT teams and a focus on secure, repeatable deployments. The role emphasizes design through deployment, robust documentation, and mentorship, with a practical