M365 Support Senior Consultant

Location: Katowice - 2 days in office / 3 days remote

Let us introduce you the job offer by EY GDS Poland – a member of the global integrated service delivery center network by EY.

The opportunity

We are looking for a Senior M365 & Power Platform Engineer who serves as the expert escalation point for complex issues, platform architecture, governance, and automation. You will drive deep diagnostics, implement enterprise‑level configurations, lead service improvements, and provide expert‑level Power Platform support across environment governance, Dataverse, performance, and complex flow failures. In addition to standard business hours, the consultant will participate in an on-call support rotation. On-call duties may occasionally include evenings, nights, weekends. During these periods, the consultant is expected to remain available to respond to potential system-related incidents or user requests and, when required, take ownership of troubleshooting and resolving issues.

Your key responsibilities

• Responsible for decision-making, optimizing processes, resource management, and overseeing team management as needed for task execution.
• Accountable for allocating personnel, supervising team members, assigning tasks, ensuring that the team has the necessary tools and support to succeed in their roles and optimizing and evaluating their performance to meet organizational goals.
• As part of the project requirements, the Consultant will provide support during regular business hours and participate in a pre-scheduled on-call rotation. During on-call periods, the Consultant will be expected to remain available to respond to system incidents and user requests when necessary.

M365:

• Lead complex RCA and deliver permanent fixes across Exchange, SharePoint, OneDrive, and Teams.
• Design and enforce governance, compliance, and security frameworks aligned to enterprise standards.
• Build advanced PowerShell automation for large‑scale admin, reporting, and operations.
• Own Conditional Access, DLP, retention, sensitivity labels, and tenant‑wide security/compliance policies.
• Implement platform enhancements across Exchange, SharePoint, and Teams.
• Partner with architects/service owners on solution design and platform decisions.
• Mentor L1/L2 teams; uplift capability through documentation and knowledge sharing.

Power Platform:

• Resolve advanced Power Automate issues (custom connectors, throttling, complex dependencies).
• Diagnose Dataverse role conflicts, schema issues, capacity constraints, and environment blockers.
• Optimize Power Apps for performance, security, and governance.
• Support CoE initiatives, DLP policies, and ALM/solution lifecycle processes.
• Provide guidance on environment strategy and data design.
• Implement automation/monitoring to improve reliability and visibility.

Skills and attributes for success

• Deep knowledge of Microsoft 365 architecture & integrations, enabling expert cross‑service troubleshooting.
• Expert administration of Exchange Online, SharePoint Online, OneDrive, Teams, and Purview (Security & Compliance).
• Strong Power Platform expertise — Power Apps, Power Automate, and Dataverse, including cross‑service troubleshooting and governance awareness.
• Advanced PowerShell & Microsoft Graph automation for reporting, governance, and large‑scale administration.
• Strong Entra ID (Azure AD): Conditional Access, MFA, identity governance, authentication flows, and hybrid concepts.
• Proven RCA leadership, stakeholder management, and clear executive‑level communication.
• Proficient with audit/sign‑in logs, Message Trace, CQD/Call Analytics, and health/performance diagnostics.
• Coaching mindset — able to mentor L1/L2 teams and drive process and operational excellence.
• Hands-on approach to collaborating with R&D teams to identify and implement best practices and new MS DYNAMICS 365 solutions that may enforce governance, compliance, and security frameworks
• Willingness to report on the progress of R&D projects and document the results of implementations, as well as post-implementation review aligned to enterprise standards.

To qualify for the role, you must have

• 3–6 years of deep, hands‑on enterprise administration of Microsoft 365.
• Expert‑level experience in security, governance, compliance, and tenant architecture.
• Strong Power Platform administration (Dataverse troubleshooting, complex flow debugging, governance).
• Experience operating in a 24×7 rotational support model.
• Demonstrated ability to lead RCA, architect improvements, and guide teams through complex scenarios.
• Willingness to work in a 24/7 shift-based support environment, including participation in a scheduled on-call rotatio

Ideally, you’ll also have

• M365 Core: Exchange Online, SharePoint Online, OneDrive, Teams (admin + deep troubleshooting)
• Security & Compliance: Purview, DLP, retention, sensitivity labels, eDiscovery/audit
• Identity: Entra ID (Conditional Access, MFA, identity governance, auth flows; hybrid aware)
• Automation: Advanced PowerShell + Microsoft Graph (large‑scale admin, reporting, governance)
• Power Platform: Power Automate (triggers/connectors/run history), Power Apps (RBAC/connectors), Dataverse (roles/permissions/connection refs)
• Ops & RCA: Service health, Message Trace, CQD/Call Analytics, sign‑in logs; ITSM (ServiceNow)
• Architecture & Governance: Tenant standards, DLP policies, environment strategy, change control
• Communication: Clear stakeholder updates; strong documentation discipline
• Certifications: MS‑102 (Microsoft 365 Administrator) and one Power Platform cert (PL‑200 or PL‑400)

What we look for

• Passionate learners who stay updated with the latest Microsoft 365 and Power Platform advancements.
• Strong problem solvers with the ability to analyze complex issues and drive long-term solutions.
• Team players who can collaborate effectively in a remote or hybrid work environment.
• Detail-oriented professionals with strong documentation skills.

What we offer

EY Global Delivery Services (GDS) is a dynamic and truly global delivery network. We work across nine locations – Argentina, Hungary, India, the Philippines, Poland, Sri Lanka, Mexico, Spain and the United Kingdom – and with teams from all EY service lines, geographies and sectors, playing a vital role in the delivery of the EY growth strategy. From accountants to coders to advisory consultants, we offer a wide variety of fulfilling career opportunities that span all business disciplines. In GDS, you will collaborate with EY teams on exciting projects and work with well-known brands from across the globe. We’ll introduce you to an ever-expanding ecosystem of people, learning, skills and insights that will stay with you throughout your career.

• Continuous learning: You’ll develop the mindset and skills to navigate whatever comes next.
• Success as defined by you: We’ll provide the tools and flexibility, so you can make a meaningful impact, your way.
• Transformative leadership: We’ll give you the insights, coaching and confidence to be the leader the world needs.
• Diverse and inclusive culture: You’ll be embraced for who you are and empowered to use your voice to help others find theirs.

About EY

EY | Building a better working world

EY exists to build a better working world, helping to create long-term value for clients, people and society and build trust in the capital markets.

Enabled by data and technology, diverse EY teams in over 150 countries provide trust through assurance and help clients grow, transform and operate.

Working across assurance, consulting, law, strategy, tax and transactions, EY teams ask better questions to find new answers for the complex issues facing our world today.

If you can demonstrate that you meet the criteria above, please contact us as soon as possible.

The exceptional EY experience. It’s yours to build.

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