Senior Exchange Administrator

JOB SUMMARY

We are seeking a highly experienced Senior Exchange Server & Office 365 Administrator with 7–10 years of professional expertise in managing large-scale infrastructure. The ideal candidate will be a technical authority in Microsoft Exchange Server On-Premise and Office 365 cloud environments. You will lead critical projects including Hybrid Migrations, High Availability (HA) design, and enterprise-level Security & Compliance frameworks. This role requires a seasoned professional capable of driving technical excellence, mentoring teams, and ensuring the seamless operation of global mail systems.

KEY RESPONSIBILITIES

1. On-Premise Exchange Infrastructure

• Lead the end-to-end Installation & Configuration of Exchange Server versions 2013, 2016, and 2019.
  
• Design, implement, and manage Exchange DAG (Database Availability Group) to ensure High Availability (HA) and disaster recovery.
  
• Oversee Exchange Database Management, including regular Health Checkups and performance optimization.
• Manage critical Database Backup & Restore operations to guarantee data integrity and availability.
• Execute routine Patching of Exchange CU (Cumulative Updates), SU (Security Updates), and HU (Hotfix Updates).
• Configure and troubleshoot Send/Receive Connectors for secure internal and external mail routing.
• Facilitate Application Integration with Exchange Server to support various business tools and services.

2. Cloud & Hybrid Operations

• Expertly manage Exchange Migrations (e.g., transitioning from Exchange 2013 to 2016 or 2019).
  
• Administer Office 365 and Exchange Online environments, including tenant management and user licensing.
  
• Support and troubleshoot Hybrid Migrations, ensuring seamless mailbox moves between on-premises and the cloud.
  
• Manage identity synchronization and federation using Azure AD Connect.
  
• Oversee legacy migrations, such as Lotus-to-Exchange or Lotus-to-O365, while maintaining legacy server services.
  

3. Advanced Troubleshooting & Security

• Resolve complex Mail Flow issues involving SMTP, DNS, SPF, DKIM, and DLP.
  
• Troubleshoot Outlook configuration (POP, IMAP, Autodiscover) and OneDrive synchronization applications.
  
• Utilize advanced diagnostic tools including Fiddler, SARA, Event Viewer, Kibana, and Log Parser.
  
• Implement and audit security protocols such as TLS, SSL, and Security & Compliance Center policies.
  

4. Automation & Technical Leadership

• Develop and maintain complex PowerShell scripts for the Automation of administrative tasks.
  
• Act as a Technical Lead, mentoring junior engineers and delegating assignments to meet project milestones.
  
• Coordinate with Microsoft Support via the 0365 Admin Portal for escalated technical cases.
  
• Document system architectures, RCA (Root Cause Analysis) reports, and operational best practices.
  

REQUIRED SKILLS & QUALIFICATIONS

• Experience: 7–10 years of hands-on experience in Exchange Server (2013/2016/2019) and Office 365 administration.
  
• Technical Expertise:
  • Deep proficiency in Exchange DAG, Mailbox Migrations, and Transport Rules.
    
  • Extensive knowledge of Active Directory, Azure AD, and Group Policies.
    
  • Strong experience in server maintenance, including SQL Server Management and System Monitoring.
    
• Automation: Advanced capability in PowerShell for infrastructure management.
  
• Soft Skills: Exceptional Leadership, stakeholder communication, and problem-solving abilities.
  
• Education: Bachelor’s degree in Electronics and Communication, Computer Science, or a related field.
  

PREFERRED SKILLS

• Certifications: Microsoft 365 Certified (e.g., MS-203 or MS-700).
  
• Tooling: Familiarity with ServiceNow, CRM solutions, and ITIL frameworks.
  
• Collaboration Tools: Experience with Microsoft SharePoint, Skype for Business, or Lync.