Systems Administrator

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FT Salary Full-Time Professional Houston, TX, US

4 days ago Requisition

Who we are:

Manhattan Life Insurance and Annuity Company was founded in 1850, the Company’s longevity makes it one of the oldest and most reliable health and life insurance companies in the country. Operating successfully for over 175 years is a testimony to Manhattan Life’s enduring history, and an indicator of the reliability of our future. Manhattan Life’s headquarters are in Houston, TX and the company is continually growing with multiple office locations nation-wide.

Manhattan Life offers attractive employee benefits starting day one, including immediate coverage under our health, dental and vision plans. We offer flexible schedules, including shortened hours on Fridays, free parking, company‑wide events, professional development (LOMA testing) and a company‑wide wellness program.

Scope and

Purpose:

Manhattan Life continues to grow our business and our technology team. We currently have an opportunity for an experienced Systems Administrator at our Houston, Texas headquarters.

This position is responsible for the administration, security, reliability, and optimization of Manhattan Life's hybrid infrastructure, with a strong focus on enterprise Linux, Microsoft Azure, Microsoft 365, Windows Server, virtualization, and hybrid identity services. The Systems Administrator will help maintain secure and highly available systems, support infrastructure projects, improve operational processes, and provide escalation support across server, cloud, virtualization, identity, and endpoint management platforms.

Areas of responsibility include enterprise Linux systems, Microsoft cloud services, Microsoft 365, hybrid directory services, virtualization, network and security infrastructure, collaboration platforms, compliance tooling, multi‑factor authentication, remote monitoring and management, ticketing, documentation, and other enterprise IT platforms.

Duties and Responsibilities:

• Server Administration:
  Linux & Windows
  • Administer and support enterprise Linux systems, including configuration, patching, troubleshooting, access management, performance monitoring, and service availability.
  • Support additional Linux distributions and enterprise Linux platforms as needed.
  • Administer current Windows Server environments.
  • Support migration and integration of acquired legacy systems.
  • Manage directory services, Group Policy, DNS, DHCP, file permissions, authentication, SSO, and federation‑related services.
  • Support hybrid identity environments integrating on‑premises directory services with cloud identity platforms.
  • Perform server hardening, vulnerability remediation, OS patching, and lifecycle management.
  • Maintain accurate documentation for server configurations, operational procedures, standards, and support processes.
• Cloud Infrastructure & Microsoft 365
  • Administer Microsoft Azure services, including virtual machines, networking, security controls, backup, monitoring, storage, access control, and related infrastructure services.
  • Support cloud security and governance capabilities, including conditional access, security posture management, role‑based access control, logging, and monitoring.
  • Support hybrid infrastructure integrations between on‑premises systems, Azure, and Microsoft 365.
  • Automate cloud and administrative tasks using scripting and command‑line tools.
  • Administer Microsoft 365 services, including email, collaboration, file sharing, communication tools, and related security/compliance features.
  • Support compliance, retention, data protection, auditing, and information governance capabilities.
  • Assist with enterprise security, compliance, and identity protection tools.
• Identity, Access, & Security
  • Administer and support hybrid directory and cloud identity environments.
  • Support MFA, access controls, and authentication workflows.
  • Assist with identity lifecycle processes, group management, access reviews, and privileged access controls.
  • Support security initiatives related to endpoint…