Senior Engineer, Unified Communications​/Microsoft 365

Senior Engineer, Unified Communications / Microsoft 365

Location:

Remote (Must reside in Los Angeles, Orange County, or San Francisco, CA)

Work Hours:

4:00 PM – 12:00 AM PST Compensation: $108,000 – $140,000 base salary Bonus & Benefits:
Full benefits package + bonus

Employment Type:

Full-Time

Hire Now Staffing is partnering with a top-tier Am Law 50 firm to recruit a seasoned and skilled Senior Engineer, Unified Communications / Microsoft 365. This role is critical to the stability, security, and performance of the firm’s enterprise messaging and collaboration environment and requires deep, hands-on expertise across Microsoft 365 and email systems.

This is a long-term, core engineering role. Candidates with primarily contract, temporary, or freelance backgrounds will not be considered.

This role owns the end-to-end architecture, operations, and reliability of enterprise Unified Communications and messaging services. You will serve as a senior technical authority for Microsoft 365—particularly Exchange Online and hybrid email environments—ensuring seamless email delivery, secure collaboration, and resilient system performance across the firm.

The ideal candidate brings expert-level knowledge of the complete email lifecycle, strong automation skills, and the ability to lead complex troubleshooting efforts in a highly regulated, high-availability environment.

As Senior Engineer, Unified Communications / M365, you will architect, support, and continuously improve the firm's collaboration and messaging platforms. You will partner closely with security, infrastructure, and application teams while providing Tier 3/4 escalation support and technical leadership across the organization.

Candidates must demonstrate the ability to perform the following responsibilities to be considered for interview:

• Lead the design, implementation, and ongoing support of Unified Communications solutions, with a primary focus on Microsoft 365 and Exchange Online/Hybrid
• Serve as the subject matter expert for enterprise email architecture, including routing, authentication, deliverability, and message hygiene
• Administer and support email security platforms, including:
• Proofpoint (DLP, encryption, TAP, routing, and policy management)
• Metadact for metadata scrubbing, compliance, and secure content handling
• Manage and troubleshoot the full email lifecycle, including:
• DNS configuration
• SMTP relays
• Connectors and transport rules
• Message tracking and diagnostics
• Oversee hybrid Exchange configurations, coexistence strategies, connectors, and migration activities
• Provide Tier 3/4 escalation support for complex UC and messaging issues
• Partner with security, infrastructure, and identity teams to ensure secure, resilient services
• Develop and maintain system documentation, architecture diagrams, and operational runbooks
• Contribute to UC strategy, roadmap planning, and lifecycle management
• Participate in audits, risk assessments, and policy development related to messaging and collaboration systems

Candidates must meet all of the following to be considered:

• 7+ years of experience in Unified Communications, Messaging, or Microsoft 365 engineering roles
• Expert-level knowledge of Microsoft 365, Exchange Online, and hybrid Exchange architectures
• Deep understanding of email flow end to end, including:
• DNS
• SMTP
• SPF / DKIM / DMARC
• TLS
• Routing topologies
• Hands-on experience with Proofpoint email security solutions
• Working proficiency with Metadact or similar metadata-scrubbing tools
• Strong experience diagnosing and resolving complex UC and messaging issues
• Solid knowledge of identity and security technologies, including:
• Azure AD
• OAuth
• Conditional Access
• MFA
• Proficiency with Power Shell or similar scripting tools for automation and system administration
• Strong job stability and long-term employment history
• Ability to work the required 4:00 PM – 12:00 AM PST schedule

Candidates meeting these criteria will receive priority consideration.

• Experience with telephony / VoIP platforms, such as Microsoft Teams Phone, Cisco, Avaya, or similar
• Working…