IT Senior System Administrator

Job Description

Provide senior-level administration, governance execution, and technical enablement across Microsoft 365, with a primary focus on Power Platform, Copilot, and secure application integrations. This role ensures that low-code solutions, AI capabilities, and third-party integrations are implemented in a secure, supportable, and scalable manner while enabling business innovation and process improvement.

The Senior Microsoft 365 Administrator operates within established architectural standards and governance guardrails and serves as a technical lead for Power Platform administration and Copilot enablement activities. The role balances platform governance with hands-on support for solution owners.

Job Duties and Responsibilities

• Provide senior-level administration and governance execution across Microsoft 365, with primary responsibility for Power Platform, Copilot, and application integrations

• Administer Microsoft Entra ID application integrations, including app registrations, enterprise applications, API permissions, consent policies, and service principals

• Govern application and integration lifecycle management to ensure secure, supportable, and compliant access to Microsoft 365 services

• Review, onboard, and maintain third-party and internal application integrations in alignment with established architectural standards and security requirements

• Partner with application owners and business solution teams to design and implement secure authentication and authorization patterns

• Administer Microsoft Power Platform, including environment strategy (development, testing, production), capacity monitoring, usage analysis, and solution lifecycle management

• Enforce Power Platform governance controls to prevent unmanaged low-code sprawl while enabling approved business solutions

• Support promotion of Power Platform solutions from development through production and provide operational support for production solutions

• Serve as the technical enablement lead for Microsoft Copilot within Microsoft 365

• Assist business teams and solution owners with Copilot agent design, AI-assisted workflows, and business-specific Copilot use cases

• Translate business requirements into secure, reusable Copilot and Power Platform solutions aligned with governance and compliance standards

• Promote responsible, secure, and scalable AI usage patterns across the organization

• Serve as an escalation point for complex Microsoft 365 issues related to automation, integrations, and AI-enabled solutions

• Create and maintain technical documentation, standards, and operational runbooks related to Power Platform, Copilot, and application integrations

• Provide guidance and enablement to junior administrators and business solution owners

• Partner with identity, security, infrastructure, and compliance teams to ensure consistent service delivery and governance alignment

• Identify opportunities for platform improvements, automation, and increased Microsoft 365 maturity

• Accurately document work, configurations, and changes in ticketing and change management systems

• Perform other duties as assigned

Requirements

Education and Experience

• Bachelor’s degree in computer science, Information Technology, or related field(or equivalent combination of education and experience)

• Microsoft certification in Power Platform Developer Associate preferred not required

• 5–8 years of experience administering Microsoft 365 or enterprise collaboration platforms

• Demonstrated experience administering Microsoft Power Platform in a production environment

• Hands-on experience with Microsoft Entra ID application and integration management

Knowledge, Skills, and Abilities

• Strong understanding of Microsoft 365 services and platform interdependencies

• Hands-on expertise with:

• Microsoft Entra ID application integrations

• Power Platform administration and governance

• Microsoft Copilot enablement concepts

• Ability to balance governance, security, and user enablement

• Ability to translate technical concepts into clear, business-friendly guidance

• Strong documentation, communication, and collaboration skills

• Ability to work independently with minimal day-to-day direction while partnering effectively across teams

An Equal Opportunity Employer including Disabled/Veterans

Pay Range $90,000-$120,000/Annually