Exchange On-line and On-prem Engineer

Role name and description

Exchange On-line and On-prem Engineer

The opportunity

You will be responsible for supporting and administering the firms global Messaging and Directory Services infrastructure with primary focus on Microsoft Exchange environments. This role applies ITIL-based service management practices and encompasses a broad range of responsibilities including vendor coordination infrastructure maintenance and upgrades deployments migrations introduction of new technologies and services documentation knowledge sharing training and operational support across related platforms.

Your key responsibilities

• Administer and maintain Microsoft Exchange (onpremises and Online) and the underlying messaging infrastructure.
• Provide L4 escalation support for complex incidents escalated from L3.
• Own projects endtoend: translate requirements plan delivery execute and drive to successful completion.
• Proactively identify and resolve issues before they impact users or services.
• Collaborate and communicate effectively with crossfunctional engineering operations and product teams.
• Demonstrate selfstarter leadershiptake initiative show impact and continuously improve ways of working.
• Shape and advocate a forwardlooking technology vision for Messaging/Exchange; champion modern secure and scalable approaches.
• Execute migrations to/from Microsoft 365 (M365) including planning tooling cutover and postmigration stabilization.
• Administer Microsoft 365 services related to the role (e.g. Power BI Power Apps Power Automate) where applicable.
• Administer Active Directory including objects policies and integrations relevant to messaging services.
• Troubleshoot deeply across Exchange AD networking and client layers to restore service and prevent recurrence.
• Innovate & lead: Generate prioritize and deliver SIP (Service Improvement Plan) and automation initiatives that reduce toil improve reliability and measurably enhance user experience; build the business case secure alignment and drive adoption across engineering and operations.
• Gather and document business/technical requirements; design redundant secure onprem messaging solutions (sizing documentation cost estimates).
• Plan and execute preproduction testing (test cases pilot planning risk/issue mitigation) and manage production deployments.
• Follow ITIL processes for Incident Problem and Change; contribute to continual service improvement.
• Contribute to projects across migrations buildouts and related infrastructure initiatives as assigned.
• Resolve incidents and problem cases using vendor guidance platform expertise and environment knowledge.
• Evaluate and test new capabilities through PoCs; recommend product/service enhancements with vendors.
• Perform maintenance and upgrades to sustain performance reliability and security.

Skills and attributes for success

• Strong analytical capability across core Exchange and Active Directory technologies supporting large global user bases.
• Demonstrates sound judgment discretion and professionalism in decisionmaking.
• Excellent communication skillsverbal written listeningalong with strong interpersonal organizational and projectcoordination abilities.
• Effective teaming and collaboration with strong organization and timemanagement skills.
• High crosscultural awareness and ability to work seamlessly with global stakeholders.
• Solid understanding of ITIL processes and their application within enterprise operations.
• Ability to manage strategic vendors including Microsoft.
• Commitment to knowledge sharing with the ability to deliver handson or classroomstyle training to peers and team members.

To qualify for the role you must have

• 8 years of handson experience installing configuring and troubleshooting Microsoft Exchange Server 2016 or later with strong understanding of Exchange design architecture and operations.
• Proven experience supporting largescale global Exchange implementations including complex migrations and hybrid/onpremisestoM365 transition projects.
• Extensive handson administration of Exchange Server 2016/2019/2025 and Exchange Online in enterprise-scale environments.
• Strong proficiency in Microsoft 365 / Office 365 administration.
• PowerShell scripting expertise for automation reporting and operational tasks.
• Working knowledge of Microsoft Outlook (2016/2019/2021) and its integration with Exchange services.
• Experience using Exchange management maintenance and monitoring tools.
• Ability to support Digital Workplace technologies and related productivity tools.
• Understanding of Windows Server (2008/2012) Active Directory DNS IIS and other core network services relevant to Exchange operations.
• Familiarity with mobile messaging solutions (ActiveSync Outlook for Mobile) preferred.
• Experience with SCOM based Exchange monitoring preferred.
• Working knowledge of key M365 service components (identity security mail flow compliance etc.).

Ideally youll also have

• Experience managing and supporting largescale Exchange environments including planning designing installing implementing monitoring and optimizing Exchange infrastructure.
• Strong knowledge of Backup High Availability (HA) Disaster Recovery (DR) and Site Resilience strategies for enterprise messaging platforms.
• Understanding of server and SAN sizing and experience with email security solutions such as antivirus and antispam gateways (e.g. IronPort Exchange Online Protection).
• Familiarity with Exchange security technologies including authentication access controls and secure configuration practices.
• Experience with email archiving and retention solutions and policies.
• Ability to configure and maintain remote access capabilities (OWA Outlook Anywhere etc.).
• Experience acting as a technical SME for onpremises to Office 365 (M365) migrations including planning execution and cutover.
• Exposure to and interest in implementing new products tools and service offerings within messaging and collaboration technologies.

What we offer

EY Global Delivery Services (GDS) is a dynamic and truly global delivery network. We work across six locations Argentina China India the Philippines Poland and the UK 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 GDS you will collaborate with EY teams on exciting projects and work with well-known brands from across the globe. Well introduce you to an ever-expanding ecosystem of people learning skills and insights that will stay with you throughout your career.

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