Lead Systems Engineer - MS Exchange

Position Description
Job Title: Messaging SME – IT Infrastructure Expert (Microsoft O365)
Overview
We are seeking a highly experienced IT Infrastructure Expert specializing in Microsoft Exchange and Office 365 to lead complex enterprise messaging environments. This role demands deep technical expertise, strategic thinking, and hands on experience in designing, implementing, and optimizing large scale messaging platforms.
Key Responsibilities
Architect, administer, and optimize enterprise level Microsoft Exchange (On Prem & Online) and Office 365 environments, ensuring high availability, security, and compliance.
Act as a Tier 3 escalation point for critical messaging issues, performing advanced troubleshooting and root cause analysis across hybrid infrastructures.
Design and implement migration strategies for Exchange Online and hybrid deployments, ensuring seamless integration with Active Directory and other enterprise systems.
Monitor and analyse system performance, proactively identifying bottlenecks and implementing robust solutions to maintain optimal service delivery.
Develop and enforce best practices, governance policies, and security standards for messaging platforms.
Automate administrative tasks using advanced PowerShell scripting and other automation frameworks to improve operational efficiency.
Collaborate with cross functional teams to evaluate emerging technologies, recommend improvements, and drive modernization initiatives.
Maintain comprehensive documentation for architecture, processes, and troubleshooting guides.
Provide technical leadership and mentorship to junior engineers and support teams.
Ensure compliance with ITIL processes, including incident, problem, and change management.
Required Skills & Experience
10+ years of progressive experience in enterprise messaging platforms, including Microsoft Exchange (On Prem & Online), Office 365, and hybrid environments.
Proven expertise in Active Directory, DNS, SMTP, POP/IMAP protocols, Email Gateways and related networking fundamentals.
Strong proficiency in PowerShell scripting for automation and remediation.
Hands on experience with large scale migrations, tenant management, and license optimization.
Deep understanding of Office 365 capabilities, service descriptions, and security/compliance features.
Experience with Microsoft System Center Configuration Manager (SCCM) and integration with messaging platforms.
Familiarity with monitoring tools for log analysis and performance optimization.
Certifications preferred: Microsoft Certified Solutions Expert (MCSE), Microsoft 365 Certified: Enterprise Administrator Expert, ITIL Foundation.
Desired Attributes
Strategic thinker with architectural mindset and ability to design scalable, resilient messaging solutions.
Exceptional problem solving and analytical skills, capable of resolving complex technical challenges under pressure.
Strong communication and leadership skills to influence stakeholders and guide technical teams.
Passion for innovation and continuous improvement in enterprise messaging technologies.
Your future duties and responsibilities
Required Qualifications To Be Successful In This Role
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Work arrangement
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