Senior Unified Communications & M365 Engineer

Senior Unified Communications & M365 EngineerSeeking a Senior Unified Communications & M365 Engineer to design, support, and enhance enterprise collaboration and messaging systems. This role manages end-to-end email delivery operations and administration of Microsoft 365 core services, including Exchange Online (and Hybrid), Teams, and related collaboration platforms.Office Hours: 4:00 PM – 12:00 AM PSTKey ResponsibilitiesLead the architecture, implementation, and support of Unified Communications solutions focused on Microsoft 365 and Exchange Online/Hybrid.Serve as the subject matter expert for email architecture, including routing, mail flow, authentication, deliverability, and message hygiene.Administer and support Proofpoint security platforms, including DLP, encryption, TAP, routing, and policy management.Configure and maintain Metadact or similar tools for metadata scrubbing, compliance, and secure file handling.Manage the full email lifecycle, including DNS, SMTP, SPF/DKIM/DMARC, TLS, connectors, and transport rules.Oversee hybrid Exchange configurations, coexistence, and migration activities.Provide Tier 3/4 support to resolve complex messaging and Unified Communications issues.Collaborate with security, infrastructure, and applications teams to ensure secure, resilient, and high-performing messaging services.Develop and maintain system documentation, architecture diagrams, and operational runbooks.Contribute to long-term UC strategy, roadmap planning, and lifecycle management initiatives.Support audits, risk assessments, and compliance efforts related to messaging and collaboration platforms.Additional ResponsibilitiesPartner with infrastructure and security teams to optimize system reliability and performance.Mentor junior engineers and lead technical projects.Maintain high standards for service quality, technical accuracy, and response efficiency.Preferred Technical ExperienceExperience with telephony/VoIP platforms such as Microsoft Teams Phone, Cisco, or Avaya.Working knowledge of SharePoint Online, including site permissions and administration.Required Skills and Technical Proficiencies7+ years in Unified Communications, Messaging, or Microsoft 365 engineering roles.Expert-level knowledge of Microsoft 365, Exchange Online, and hybrid Exchange architectures.Hands-on experience with Proofpoint email security solutions.Proficiency with Metadact or similar metadata-scrubbing tools.Deep understanding of email lifecycle technologies: DNS, SMTP, SPF/DKIM/DMARC, TLS, and routing topologies.Strong troubleshooting skills in hybrid messaging and UC environments.Knowledge of Azure AD, OAuth, Conditional Access, and MFA.Proficiency with PowerShell or similar scripting tools for automation and administration.Experience within law firm or professional services environments is preferred.Certifications (Preferred)Microsoft 365 Certified: Messaging Administrator AssociateMS-100 or MS-203, or MCSEProofpoint Certified SpecialistOther Unified Communications or security certifications.EducationBachelor's degree in Information Technology, Computer Science, or a related discipline, or equivalent professional experience. MDA Edge