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Microsoft M365 Delivery Manager – Senior Manager

EY GDS Consulting Digital is seeking an experienced Microsoft 365 Delivery Manager at the Senior Manager level to lead complex, large-scale Microsoft 365 transformation and managed-service engagements. The individual will be accountable for end-to-end delivery, including solution shaping, delivery planning, governance, financial and resource management, quality assurance, risk and dependency management, and client stakeholder engagement. The role requires strong technical and delivery experience across Microsoft 365 services, including Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, Intune, Microsoft Entra ID, security, compliance, and hybrid environments.

The Delivery

Manager will provide strategic direction and technical oversight, establish effective delivery controls and operating rhythms, manage globally distributed and multidisciplinary teams, address escalations, and ensure that engagements achieve agreed business outcomes, service quality, timelines, and commercial commitments. The individual will also identify opportunities for continuous improvement, automation, reusable assets, capability development, and account growth while coaching delivery leads, architects, and other team members.

The opportunity

We’re looking for resources with capacity that ranges from assisting on in-flight initiatives, up to technical briefings and demonstrations of new technologies across the organization. In senior level roles, leads business solutions, capabilities, and is a strong influencer that engages with client executives and stakeholders. This is a fantastic opportunity to be part of a leading firm whilst being instrumental in the growth of our service offering.

Your key responsibilities

- Engage with clients and senior stakeholders to understand their business objectives, technology landscape, operational challenges, and security requirements, translating them into scalable Microsoft 365 solutions and delivery roadmaps.
- Act as the Microsoft 365 subject matter expert and delivery leader, accountable for the successful delivery of complex, enterprise-scale transformation, migration, adoption, and managed-service engagements.
- Own end-to-end engagement delivery, including planning, governance, scope, financial performance, resource management, quality, risks, dependencies, milestones, and contractual commitments.
- Establish effective delivery governance, operating rhythms, controls, performance measures, and escalation mechanisms to ensure predictable and consistent delivery across multiple workstreams and globally distributed teams.
- Provide technical leadership and oversight for solutions across Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, Intune, Microsoft Entra ID, Microsoft Purview, Power Platform, security, compliance, and hybrid environments.
- Lead solution architecture and design activities for complex Microsoft 365 engagements, ensuring alignment with agreed architecture principles, security requirements, design standards, delivery methodologies, and reusable assets.
- Lead major workstreams within large-scale transformation programs, ensuring coordination across architecture, engineering, migration, testing, change management, adoption, service transition, and operations teams.




- Own the resolution of critical technical and delivery challenges, acting as the senior escalation point for architects, engineering teams, project managers, clients, and other stakeholders.
- Serve as a trusted advisor to senior client stakeholders by translating the Microsoft 365 product roadmap, technology trends, and service changes into customer-specific recommendations, risk mitigation plans, adoption opportunities, and measurable business benefits.
- Manage engagement economics, including effort estimation, budgeting, forecasting, utilization, delivery productivity, scope control, and margin performance, while balancing quality and client expectations.
- Identify and manage delivery risks, architectural dependencies, security and compliance considerations, and service-readiness requirements throughout the engagement lifecycle.
- Define and promote Microsoft 365 governance and best practices covering identity, access, security, compliance, information protection, lifecycle management, administration, monitoring, and user adoption.
- Drive continuous improvement through automation, standardized delivery methods, reusable tools, accelerators, reference architectures, and lessons learned from previous engagements.
- Lead, mentor, and coach architects, technical leads, and delivery team members through performance management, technical communities, knowledge sharing, succession planning, and capability development.
- Support workforce planning, staffing, hiring, demand management, and the effective deployment of skills across concurrent engagements and account portfolios.
- Contribute to proposals, solution shaping, estimations, client presentations, and account growth by identifying additional opportunities and developing credible delivery approaches.
- Work effectively across Agile, Waterfall, and hybrid delivery models, adapting governance, planning, controls, and reporting to suit the engagement's complexity and client environment.
- Communicate complex technical and delivery topics clearly to audiences ranging from engineering teams to C-level stakeholders, enabling timely decisions and maintaining alignment across all parties.

Skills and attributes

- Strong experience managing complex Microsoft 365 transformation, migration, implementation, adoption, or managed-service engagements.
- Good working knowledge of the Microsoft 365 ecosystem, including Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, Intune, Microsoft Entra ID, Microsoft Purview, Power Platform, security, compliance, and hybrid environments.
- Ability to understand Microsoft 365 solutions and technical dependencies sufficiently to support delivery planning, challenge delivery assumptions, manage risks, and facilitate informed decisions. The role is not expected to perform detailed solution architecture or design.
- Demonstrated experience leading multiple workstreams or a portfolio of engagements involving architects, engineers, project managers, business analysts, security specialists, change-management teams, and globally distributed delivery teams.
- Strong experience managing scope, schedules, budgets, forecasts, resources, utilization, quality, delivery risks, dependencies, contractual commitments, and commercial performance.
- Experience establishing delivery governance, operating rhythms, executive reporting, performance measures,



issue-resolution processes, and escalation mechanisms.
- Practical experience delivering through Agile, Waterfall, and hybrid methodologies, with the ability to adapt governance and delivery controls to the engagement context.
- Consulting or professional-services experience is strongly preferred, including client engagement, proposal support, effort estimation, delivery planning, and account-growth activities.

Soft Skills

- Excellent written and verbal communication skills, with the ability to engage technical, non-technical, and executive stakeholders.
- Strong leadership and team-management skills, with the ability to motivate, mentor, and develop globally distributed teams.
- Collaborative team player who builds trusted relationships across clients, partners, vendors, and internal functions.
- Self-motivated, proactive, and highly accountable, with a strong sense of ownership for delivery outcomes.
- Strong stakeholder-management and influencing skills, including the ability to manage expectations and facilitate decisions.
- Excellent presentation and facilitation skills, with the confidence to communicate delivery status, risks, and recommendations to senior leadership.
- Ability to remain composed, decisive, and solution-focused in high-pressure and fast-paced delivery environments.
- Strong problem-solving, conflict-resolution, and negotiation skills.
- Ability to prioritize competing demands and coordinate multiple workstreams effectively.
- Adaptable and resilient, with the ability to lead teams through ambiguity, organizational change, and evolving client priorities.
- Culturally aware and able to collaborate effectively across geographies, time zones, and diverse working styles.
- Results-oriented, with a focus on quality, timely execution, continuous improvement, and measurable business outcomes.

To qualify for the role, you must have

- A bachelor's or master's degree
- A minimum of 14+ years of experience, preferably background in a professional services firm.
- Excellent communication skills with consulting experience preferred

Ideally, you’ll also have

- Analytical ability to manage multiple projects and prioritize tasks into manageable work products.
- Can operate independently or with minimum supervision

What working at EY offers At EY, we’re dedicated to helping our clients, from start–ups to Fortune 500 companies — and the work we do with them is as diverse as they are.

You get to work with inspiring and meaningful projects. Our focus is education and coaching alongside practical experience to ensure your personal development. We value our employees and you will be able to control your own development with an individual progression plan. You will quickly grow into a responsible role with challenging and stimulating assignments. Moreover, you will be part of an interdisciplinary environment that emphasizes high quality and knowledge exchange. Plus, we offer:

- Support, coaching and feedback from some of the most engaging colleagues around
- Opportunities to develop new skills and progress your career
- The freedom and flexibility to handle your role in a way that’s right for you

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.

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