Senior Microsoft 365 Platform Engineer

Job Title: Senior Microsoft 365 Platform Engineer Location: Berwyn, PA, US, 19312 Business Unit: Nul Job Description We are seeking a highly skilled and results-driven Senior Microsoft Platform Engineer to join our global Information Technology team. This role is central to the design, implementation, and continuous improvement of our Microsoft 365 (M365) ecosystem, which underpins collaboration and productivity for more than 20,000 users worldwide. Reporting to the Senior Manager, IT Collaboration, the successful candidate will bring deep expertise across Microsoft 365 workloads and Entra/Azure environment, both for a commercial and GCCH tenant. They will serve as a trusted technical authority, shaping platform strategy, driving adoption of emerging capabilities such as Agentic AI and Microsoft Copilot, and ensuring the platform meets the highest standards of security, compliance, and operational excellence. This position demands a proactive leader who thrives in a dynamic, fast-paced environment and can balance strategic thinking with hands‑on execution. Platform Architecture & Governance Lead the overall M365 platform architecture, establishing and evolving the operational governance model to ensure scalability, reliability, and alignment with enterprise objectives. Define and enforce standards for Exchange Online, SharePoint Online, Microsoft Teams, and Power Platform, ensuring consistent adoption of best practices across the organization. Develop and maintain comprehensive standards, process documentation, and control frameworks to support audit, compliance, and operational continuity requirements. Proactively monitor Microsoft roadmap updates, evaluate new features, drive adoption decisions, and establish governance policies for newly released capabilities. M365 Operations & Engineering Manage and optimize a single, enterprise‑scale M365 tenant supporting over 20,000 global users. Lead and execute M365 tenant migration and integration projects, including development of detailed test plans, implementation plans, and project timelines. Provide expert‑level escalation support for complex M365 issues, coordinating with Microsoft and third‑party vendors as needed to reach timely resolution. Monitor system performance, service health, and end‑user impacting incidents; communicate status and remediation plans to stakeholders at appropriate levels. Build and maintain operational dashboards that deliver real‑time visibility into platform health, compliance posture, security status, and key performance indicators. Security, Compliance & Identity Implement and manage Microsoft 365 security and compliance capabilities, including Information Protection, Data Loss Prevention, Data Lifecycle Management, Insider Risk Management, and Microsoft Defender. Support access management and identity governance by enabling single sign‑on across cloud services and assisting with Privileged Access Management (PAM) initiatives. Partner with the cybersecurity team to monitor security posture, enforce best practices, and translate compliance requirements into platform controls. Administer eDiscovery processes, including conducting searches and managing data exports to support legal proceedings and internal investigations. AI, Automation & Innovation Drive the deployment and governance of Agentic AI solutions built on the Power Platform, partnering with business and functional teams to ensure responsible, policy‑aligned adoption. Assess the current Power Platform environment to identify gaps, recommend improvements, and lead the successful implementation of those enhancements. Develop and maintain automation frameworks and scripts to streamline the management of M365 services, reduce operational overhead, and improve consistency. Evaluate and operationalize Microsoft Copilot capabilities, including managing agent usage, Copilot Credits, and Pay‑as‑you‑Go licensing within the tenant. Collaboration & Stakeholder Engagement Partner with IT and functional teams across global regions to translate business requirements into scalable, well‑governed technical solutions. Lead the migration of telephony workloads to Microsoft Teams Phone System, coordinating with network, security, and business stakeholders. Manage the Google Workspace tenant—serving as a disaster recovery and business continuity (DR/BCP) solution in partnership with a managed service provider—to maintain collaboration capabilities during extended Microsoft service interruptions. Provide technical guidance, training, and enablement to support end‑user adoption of new platform capabilities. Qualifications Required Bachelor’s degree in Information Systems, Computer Science, or a closely related field; equivalent professional experience considered. 7+ years of hands‑on experience administering a single, large‑scale Microsoft 365 commercial tenant with a global user base along with administering a GCCH tenant. Deep expertise across Exchange Online, SharePoint Online, Microsoft Teams, OneDrive, and Power Platform. Strong working knowledge of Microsoft 365 security, compliance, and governance features, including Microsoft Purview. Demonstrated experience implementing and supporting Information Protection, DLP, Data Lifecycle Management, Insider Risk Management, Microsoft Defender, and Teams Phone System. Proficiency in Microsoft Copilot administration, including agent management, Copilot Credits, and Pay‑as‑you‑Go licensing models. Hands‑on experience with eDiscovery, including conducting searches and producing data exports for legal and investigative purposes. Experience executing tenant‑to‑tenant migrations using tools like Sharegate and Quest ODM. Strong scripting skills (PowerShell, Graph API) with a focus on automating M365 service management and reporting. Knowledge of Power Automate, Power Apps, and Microsoft Intune. Ability to administer Microsoft services across Windows, macOS, iOS, and Android platforms. Excellent analytical and troubleshooting skills with a demonstrated ability to diagnose complex, multi‑layered issues and implement effective solutions. Strong written and verbal communication skills; able to clearly convey technical concepts to both technical and non‑technical audiences at all organizational levels. Proven ability to manage competing priorities, meet deadlines, and maintain composure in a fast‑paced, globally distributed environment. High degree of discretion and integrity when handling confidential or sensitive information. Preferred Experience with Proofpoint, including Email Protection, Secure Email Relay, Threat Response Auto‑Pull, and Targeted Attack Protection. Familiarity with ITIL frameworks and change management processes in an enterprise environment. Experience managing multi‑geo or multi‑national M365 configurations, including data residency and sovereignty considerations. Understanding of Zero Trust principles and their application within the M365 and Entra ID ecosystem. Experience implementing and/or managing Box. Success Profile The ideal candidate combines deep technical expertise with the strategic mindset of a platform owner. They are intellectually curious, staying ahead of Microsoft’s evolving product roadmap, and are equally comfortable architecting long‑term solutions and diving into complex incident resolution. They build trusted relationships across IT and the business, communicate with clarity and credibility, and bring a continuous‑improvement mindset to everything they touch. Compensation Employee Type: Salaried Currency: USD Salary Minimum: 110,000 Salary Maximum: 140,000 Incentive: No Equal Opportunity Employer Statement We are an Equal Opportunity Employer and do not discriminate against any employee or applicant for employment because of race, color, sex, age, national origin, religion, sexual orientation, gender identity, status as a veteran, and basis of disability or any other federal, state or local protected class. Individuals who need a reasonable accommodation because of a disability for any part of the employment process should call View phone number on click.appcast.io. #J-18808-Ljbffr