Network System Administrator

The Massachusetts Teachers’ Retirement System (MTRS) is the pension plan for the Commonwealth’s public-school educators. The plan provides retirement, disability, and survivor benefits to more than 71,000 recipients and maintains and services retirement accounts for over 102,000 active members and 35,000 inactive members.

Our agency mission is to ensure that members of the MTRS achieve and maintain a successful and secure retirement through responsible benefits administration, financial integrity and the provision of outstanding services.

The System Administrator administers, monitors, and supports the agency's enterprise infrastructure and cloud environments, ensuring system availability, security, and performance for approximately 125 staff members. This position works closely with the Chief Technology Officer and senior technical staff.

• Administer and support Citrix DaaS environment, including session management, image updates, and user access.
• Support Nutanix hyperconverged infrastructure (HCI) including cluster health, VM management, and storage.
• Work with vendors to perform routine maintenance, patching, and capacity planning across all platforms.
• Administer Microsoft 365 tenant including Exchange Online, SharePoint, Teams, One Drive, and Intune.
• Manage Teams Phone including user provisioning and troubleshooting.
• Maintain Azure Active Directory / Entra , conditional access policies, and licensing.
• Serve as a primary point of contact for managed service and technology vendors including Citrix, AWS, Crowd Strike, Teams Phone, and Nutanix.
• Open, track, and elevate vendor support tickets to resolution.
• Hold vendors accountable to SLAs and communicate status updates to leadership.
• Evaluate vendor performance and provide recommendations for contract renewals or changes.

• Support Crowd Strike Falcon endpoint detection and response platform.
• Assist with vulnerability management, patch compliance, and security monitoring.
• Participate in IT security reviews, audits, and policy development.
• Ensure systems align with agency security policies and applicable compliance frameworks.

• Create and maintain technical documentation for all supported systems, configurations, and procedures — this is a core expectation of the role.
• Develop and update runbooks, standard operating procedures (SOPs), and network/system diagrams.
• Contribute to a centralized knowledge base to support team continuity and succession planning.
• Provide Tier 2/3 technical support for escalated helpdesk issues.
• Support onboarding and offboarding of staff including account provisioning, hardware setup, and access management.
• Assist junior staff with troubleshooting guidance and knowledge sharing.

• Demonstrated experience administering two or more of the following platforms:
  Citrix DaaS and Desktops, Amazon Web Services (AWS), Microsoft 365, or Nutanix HCI.
• Experience managing and escalating vendor support relationships, including holding vendors accountable to SLAs.
• Strong understanding of networking fundamentals including DNS, DHCP, TCP/IP, VPN, and firewall concepts.
• Familiarity with endpoint security platforms (Crowd Strike preferred).
• Ability to create and maintain clear technical documentation, runbooks, and SOPs.
• Excellent problem-solving, communication, and writing skills, including the ability to explain technical concepts to non-technical audiences.
• Ability to work independently and manage competing priorities in a small team environment.
• Adheres to Commonwealth of Massachusetts EOTSS security guidelines, standards, policies, and procedures.
• Maintains the confidentiality and…