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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Systems Engineer (Exchange) #11374 - **Company:** Ecco - **Location:** Washington, DC, United States - **Experience:** Expert - **Salary:** $166,400.0 - $197,600.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Systems Engineering, System Configuration, Information Leak Prevention, Domainkeys Identified Mail, Domain-Based Message Authentication Reporting and Conformance (DMARC), Domain Name System (DNS), Email Filtering, Microsoft Exchange Server, Information Technology Operations, Microsoft Office, Windows PowerShell, Azure Active Directory, Sender Policy Framework (SPF), Information Technology, Malware Detection - **Published:** June 19, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=bdb992b886d63635 ## About the Role Do you have experience in Technical writing within technology?, Do you have a Bachelor's degree?, Ideal candidates will bring a blend of technical depth, hands-on experience, and strong interpersonal skills to effectively manage, secure, and enhance enterprise email services. Essential skills and experience include: * 4+ years of experience administering Microsoft Exchange environments, including significant responsibility for enterprise-scale deployments. * At least 2 years supporting hybrid Exchange deployments (on-premises and Exchange Online via Microsoft 365). * 2+ years' proven proficiency with PowerShell scripting for Exchange administration, automation, and operational effectiveness. * Hands-on experience conducting mailbox migrations and supporting hybrid messaging deployments. * Demonstrated expertise in Microsoft Exchange Online and Exchange Server, Microsoft 365 Admin Center, and the Exchange Admin Center (EAC). * Experience with email security/compliance tools, including Exchange Online Protection (EOP) and Microsoft Defender for Office 365. * Technical knowledge of supporting email infrastructure technologies: DNS, SPF, DKIM, DMARC, and mail routing principles. * Experience implementing or supporting compliance, data loss prevention, and governance solutions in enterprise settings. * Familiarity with Azure Active Directory and Azure AD Connect, particularly regarding identity synchronization and directory integration. * Exceptional troubleshooting, analytical, and problem-solving skills for rapid incident response and root cause analysis. * Strong documentation and knowledge transfer abilities for maintaining technical and operational excellence. * Excellent verbal and written communication skills with a collaborative, customer-focused approach to service delivery., * U.S. Citizenship required. * Bachelor's Degree in Information Technology, Computer Science, or related field, or equivalent professional experience. * Microsoft 365 Certified: Messaging Administrator Associate certification is preferred. * Experience supporting large enterprise environments with 500+ users is desirable. * Familiarity with ITIL principles, IT service management, or IT operations best practices is advantageous., * How many years of hands-on experience do you have administering Microsoft Exchange environments, including Exchange Online and/or Exchange Server? * Have you directly supported a hybrid Exchange environment (Exchange Server + Exchange Online/Microsoft 365), including mailbox migrations and hybrid connectivity? * Due to federal contract requirements, this position is restricted to U.S. Citizens only. Do you meet this requirement? ## Description We are seeking an accomplished Senior Systems Engineer to serve as an Exchange Online Administrator supporting a complex and dynamic hybrid messaging environment. This individual will ensure secure, reliable, and compliant email services while driving enterprise messaging operations and modernization efforts. The position involves: * Administering, maintaining, and supporting a hybrid Microsoft Exchange environment (on-premises Exchange Server and Exchange Online). * Managing mailbox migrations, mail flow configurations, and maintaining seamless hybrid connectivity between on-premises and cloud email systems. * Configuring and managing transport rules, data loss prevention (DLP) policies, retention policies, and email security controls to ensure regulatory compliance and robust data protection. * Monitoring the performance and availability of messaging infrastructure, and troubleshooting to quickly resolve email-related incidents or service interruptions. * Implementing and managing anti-spam, anti-malware, and advanced threat protection solutions leveraging Microsoft Defender for Office 365 and related tools. * Provisioning and managing user mailboxes, shared mailboxes, distribution groups, and mailbox permissions according to organizational needs. * Supporting identity synchronization and integration of directory services using Azure Active Directory and Azure AD Connect. * Performing eDiscovery activities, managing legal holds, and supporting compliance investigations as required by organizational policy or regulation. * Developing and maintaining up-to-date technical documentation, including operational procedures and architecture diagrams. * Providing expert end-user support, troubleshooting, and guidance related to messaging and collaboration capabilities. ## Related Videos - [The Golden Age of Email: Owning the Inbox in the Age of AI](https://www.wearedevelopers.com/videos/100128-the-golden-age-of-email-owning-the-inbox-in-the-age-of-ai) - [WeAreDevelopers LIVE - Did AI or JS break the web?, Finding gems in the days of AI and One thing developers really need to know ](https://www.wearedevelopers.com/videos/1352-wearedevelopers-live-did-ai-or-js-break-the-web-finding-gems-in-the-days-of-ai-and-one-thing-developers-really-need-to-know) - [Fake or News: Translating Dog Barks, Notepad Gets an Upgrade and Michelin-Star Robots - Paul Tregoing](https://www.wearedevelopers.com/videos/1802-fake-or-news-translating-dog-barks-notepad-gets-an-upgrade-and-michelin-star-robots-paul-tregoing) - [Develop enterprise-ready applications for Microsoft Teams with Azure resources on modern web technologies](https://www.wearedevelopers.com/videos/187-develop-enterprise-ready-applications-for-microsoft-teams-with-azure-resources-on-modern-web-technologies) - [How Lufthansa Industry Solutions is preparing for the Quantum Age! ](https://www.wearedevelopers.com/videos/1443-how-lufthansa-industry-solutions-is-preparing-for-the-quantum-age) - [Hacking MSSQL on Cloud. All of them. 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