Senior Systems Administrator
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Job Description
Senior Systems Administrator managing Microsoft 365 and Entra platforms for a financial services company. Responsible for administration, security, and cloud modernization initiatives within enterprise environments.
Responsibilities:
- Own and administer Microsoft 365 services with a primary focus on Exchange Online, including mail flow, transport rules, hygiene, performance, and availability.
- Manage and secure identity platforms using Entra ID, including Conditional Access, MFA, and role-based access controls.
- Administer and optimize email security platforms, including Proofpoint, threat protection, policy tuning, and incident response.
- Design and implement scalable solutions across Microsoft 365 and Entra to support enterprise growth and reliability.
- Lead and execute cloud migration and modernization initiatives from on-premises environments to Microsoft 365 and Entra.
- Establish and enforce governance, security, and compliance standards across Exchange Online, identity, and collaboration platforms.
- Monitor service health, performance, and usage, and proactively identify and resolve reliability and scalability issues.
- Troubleshoot and resolve complex, cross-platform issues spanning Exchange Online, Entra ID, and integrated services.
- Automate administrative workflows and operational processes using PowerShell and other scripting tools.
- Leverage AI-driven tools and Microsoft 365 Copilot capabilities to improve operational efficiency, automate routine tasks, and enhance user experience.
- Identify and implement opportunities to integrate automation and AI solutions into system administration, monitoring, and support processes.
- Develop and integrate solutions using Power Platform, including Power Apps and Power Automate, where it drives operational efficiency.
- Collaborate with engineering, security, and business stakeholders to deliver secure and scalable solutions.
- Contribute to platform standards, documentation, and operational best practices.
- Mentor team members and provide technical guidance across Microsoft 365 and identity domains.
- Participate in additional initiatives and projects aligned with cloud and platform operations as business needs evolve.
Requirements:
- Bachelor’s degree in Computer Science, Information Systems, or related field, or equivalent experience.
- 4 years of hands-on experience administering Microsoft 365 environments at scale.
- Deep expertise in Exchange Online, including mail flow, connectors, security, and troubleshooting.
- Strong experience with Entra ID and modern identity and access management practices.
- Experience with enterprise email security solutions such as Proofpoint.
- Proven experience supporting or leading cloud migration and modernization efforts.
- Strong scripting and automation experience using PowerShell.
- Hands-on experience with Power Platform, including Power Apps, Power Automate, and Power BI.
- Solid understanding of security, compliance, and governance within Microsoft 365.
- Experience operating in complex, enterprise environments with cross-team dependencies.
- Strong problem-solving, communication, and collaboration skills.
Benefits:
- Medical, dental, vision and life insurance
- Retirement savings – 401(k) plan with generous company matching contributions (up to 6%)
- Tuition reimbursement up to $5,250/year
- Business-casual environment that includes the option to wear jeans
- Generous paid time off upon hire – including a paid time off program plus ten paid company holidays and three floating holidays each calendar year
- Paid volunteer time — 16 hours per calendar year
- Leave of absence programs – including paid parental leave, paid short- and long-term disability, and Family and Medical Leave (FMLA)
- Business Resource Groups (BRGs) – BRGs facilitate inclusion and collaboration across our business internally and throughout the communities where we live, work and play. BRGs are open to all.
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