Careers

LRS is seeking a Senior Exchange Engineer with deep expertise in Microsoft Exchange Server 2019 and Office 365 (Microsoft 365) to lead and support enterprise-level migrations to a hybrid Exchange environment with Single Sign-On (SSO) integration. This role requires hands-on experience with designing, implementing, and optimizing hybrid identity and messaging solutions.

Key Responsibilities

• Lead the design and implementation of Exchange Hybrid deployments between on-premises Exchange 2019 and Exchange Online.
• Plan and execute mailbox migrations (cutover, staged, and hybrid migrations) with minimal downtime.
• Configure and maintain Azure AD Connect, including directory synchronization and identity federation.
• Implement and support Single Sign-On (SSO) using technologies such as:
  • Active Directory Federation Services (AD FS)
  • Pass-through Authentication (PTA)
  • Seamless SSO
• Manage and optimize mail flow, including connectors, transport rules, and security policies.
• Troubleshoot complex issues related to:
  • Hybrid configuration
  • Identity and authentication
  • Mail delivery and routing
• Collaborate with security teams to enforce compliance, retention, and data protection policies.
• Perform system health checks, monitoring, and capacity planning.
• Document architecture, configurations, and migration processes.
• Provide post-migration support and optimization for Microsoft 365 workloads (Exchange Online, Teams integration if applicable).

Required Qualifications

• 7+ years of overall IT experience.
• 5+ years of hands-on experience with Microsoft Exchange (2013/2016/2019).
• 3+ years of experience implementing Exchange Hybrid environments.
• 3+ years of experience with Microsoft 365 / Exchange Online.
• Proven experience with:
  • Exchange 2019 to Exchange Online migrations
  • Hybrid Configuration Wizard (HCW)
  • Azure AD Connect configuration and troubleshooting
• Strong knowledge of:
  • SMTP, DNS, Autodiscover, and mail routing concepts
  • PowerShell scripting for Exchange and M365 administration
• Experience implementing SSO solutions:
  • AD FS or Azure AD authentication methods
• Familiarity with identity lifecycle management and user provisioning.

Preferred Qualifications

• Microsoft certifications such as: o Microsoft 365 Certified: Messaging Administrator Associate
  • Azure Administrator or Identity certifications
• Experience with: o Modern Authentication (OAuth, MFA, Conditional Access)
  • Security tools like Defender for Office 365
  • Hybrid coexistence scenarios (free/busy sharing, calendar federation)
• Knowledge of backup, archiving, and disaster recovery strategies for Exchange.

Technical Skills

• Microsoft Exchange Server 2019
• Exchange Online (Microsoft 365)
• Azure AD / Entra ID
• Azure AD Connect
• Active Directory & Group Policies
• PowerShell automation
• AD FS / SSO / Authentication protocols
• DNS, SPF, DKIM, DMARC

Soft Skills

• Strong problem-solving and analytical thinking
• Excellent communication with technical and non-technical stakeholders
• Ability to manage multiple projects and deadlines
• Documentation and knowledge-sharing mindset

Key Success Metrics

• Successful migration of on-prem Exchange to hybrid/M365 with minimal disruption
• Secure and seamless SSO user experience
• High system availability and performance
• Reduced operational incidents post-migration

The base range for this contract position is $60 - $80 per hour, depending on experience. Our pay ranges are determined by role, level, and location. The range displayed on each job posting reflects the minimum and maximum target for new hires of this position across all US locations. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training.

LRS is an equal opportunity employer. Applicants for employment will receive consideration without unlawful discrimination based on race, color, religion, creed, national origin, sex, age, disability, marital status, gender identity, domestic partner status, sexual orientation, genetic information, citizenship, status or protected veteran status.

In some cases, LRS Consulting uses generative artificial intelligence ("AI") in support of our hiring processes. LRS takes steps to ensure the use of AI does not result in discrimination based on protected class(es). AI may be used in the hiring process solely in support of the assessment of candidate qualifications. All decisions in the hiring process are made by LRS employees. If AI will be used in the hiring process for the position for which you are applying, you will be notified and will have the opportunity to opt out. Please contact AI.Questions@lrs.com with any questions.

Colorado Pay Range:
60.00 - 80.00/per Hour