Sr. Systems Administrator

Open Systems Technologies; Boston (MA); On-site; USD 90,000 - 120,000; Full time

Job summary

Open Systems Technologies in Boston, Massachusetts, is seeking a Sr. Microsoft Systems Administrator to manage and secure Microsoft 365 and Azure environments. This role will be instrumental in supporting the onboarding and integration of multiple acquired firms and will involve close collaboration with our Managed Service Provider, Thrive.

The ideal candidate will have over 5 years of hands-on administration experience with Microsoft 365 and Azure, a strong background in security management, and exceptional communication skills suited for a wealth management firm.

Qualifications

• 5+ years of hands-on Microsoft 365 / Azure administration experience.
• Deep understanding of Entra ID, Intune, Exchange Online, and Defender suite.
• Experience supporting financial or regulated environments preferred.

Responsibilities

• Administer Microsoft 365, Entra ID, Intune, Exchange Online, and related security tools.
• Administer Zoom, including AI, telephony, and SMS.
• Lead vulnerability management, patching, and security configuration.

Skills

Microsoft 365 administration

Azure administration

Security management

Customer service skills

Tools

Bititan

Sharegate

Entra ID

Intune

Exchange Online

Job description

The Sr. Microsoft Systems Administrator will manage and secure our Microsoft 365 and Azure environments. Responsible for the Microsoft 365 and Zoom incl. Telephony environments

The role supports the onboarding and integration of multiple acquired firms, including data transfers utilizing a variety of tools such as Bititan, Sharegate and others. Works closely with Thrive (our MSP) on daily operations and escalations.

Key Responsibilities

• Administer Microsoft 365, Entra ID, Intune, Exchange Online, and related security tools.
• Administer Zoom, including AI, telephny, and SMS.
• Lead vulnerability management, patching, and security configuration.
• Support onboarding and IT integration for acquired firms.
• Maintain a high level of responsiveness and customer service in a fully online, wealth management environment.
• Partner with Thrive to maintain a professional and productive relationship.

Requirements

• 5+ years of hands‑on Microsoft 365 / Azure administration experience.
• Deep understanding of Entra ID, Intune, Exchange Online, and Defender suite.
• Strong security and vulnerability management background.
• Experience supporting financial or regulated environments preferred.
• Presentation, communication and customer service skills appropriate for wealth management firm.