Enterprise Active Directory & Email Services Lead - Secret Clearance

Dunhill Solutions; United States; Remote; USD 103,000 - 150,000; Full time

Job summary

Dunhill Solutions seeks an Enterprise Active Directory & Email Services Lead to guide a remote US-based team spanning AD, Entra ID, and Exchange Online. You will own service health, security posture, and engineering delivery in a large hybrid environment.

You will supervise ~12 engineers, drive modernization and automation, and serve as the senior escalation point for complex identity and messaging issues, ensuring compliance and robust processes.

Qualifications

• Security clearance required (Active Secret).
• 5+ years with AD/Microsoft identity in large hybrid environments.
• 3+ years leading technical teams (10+ staff).
• Experience with ITSM, incident/problem/change management.

Responsibilities

• Lead a ~12-person team of AD, identity, Exchange, and messaging engineers/administrators.
• Own service health, security posture, L2/L3 support for AD/Entra ID/Exchange.
• Drive modernization, automation, and runbook maturity.
• Coordinate with cybersecurity, cloud, network, and compliance teams.

Skills

Team leadership

People management

Incident response

Governance & compliance

Staff development

Education

Security or DoD IAT-II certified

Tools

Active Directory

Entra ID

ADFS

Exchange Online

Microsoft 365 security

PowerShell automation

Job description

Enterprise Active Directory & Email Services Lead

Full-time telework (remote, U.S.)

Active Secret clearance required

The Enterprise Active Directory & Email Services Lead will lead the team responsible for enterprise identity, directory, authentication, and messaging services across a large hybrid environment. This role provides hands‑on senior technical leadership, people management, and day‑to‑day delivery accountability for Active Directory, Microsoft Entra ID, identity synchronization, ADFS/federation, MFA, Conditional Access, hybrid Exchange, Exchange Online, Microsoft 365 messaging, mail flow, email security, and related DNS/certificate dependencies. The Lead will directly manage approximately 12 engineers and administrators — including staffing, performance, coaching, and workload management — ensure service reliability and compliance, drive modernization and automation, and act as the senior escalation point for complex identity and messaging issues. The successful candidate will be accountable for team leadership and staff development, operational excellence, L2/L3 engineering support, incident and problem management, change quality, security hardening, service monitoring, audit readiness, documentation, stakeholder communication, and continuous improvement.

Team leadership & people management:

• Directly supervise a team of ~12 AD, identity, Exchange, M365, and messaging engineers/administrators, including hiring, onboarding, and offboarding support.
• Set individual and team goals; conduct regular 1:1s, performance reviews, and career development/coaching conversations.
• Manage team schedules, on‑call/rotation coverage, workload balancing, and staffing/backfill needs.
• Approve timesheets, PTO, and other administrative HR actions per company policy.
• Identify skill gaps and drive training, upskilling, and certification plans across the team.
• Foster a positive, accountable team culture; handle performance issues, conflict resolution, and disciplinary actions in partnership with HR as needed.
• Run regular team meetings, tech syncs, and knowledge‑sharing sessions to build bench strength.
• Mentor engineers on technical growth paths and support internal mobility/promotion readiness.

Technical & service leadership:

• Own enterprise service health, reliability, security posture, and L2/L3 support for AD, Entra ID, ADFS, identity synchronization, hybrid Exchange, Exchange Online, and email security platforms.
• Govern AD forest/domain design, sites/services, domains/trusts, GPO, delegation, DNS, replication, SYSVOL, and functional‑level standards.
• Govern Entra ID, Conditional Access, MFA, SSO, authentication methods, application integrations, modern authentication, and legacy protocol reduction.
• Own hybrid Exchange and Exchange Online service health, mail routing, connectors, SMTP relays, transport rules, mail traces, certificates, and Exchange hybrid optimization.
• Drive SPF, DKIM, DMARC, anti‑phishing controls, email security gateway tuning, retention‑related controls, and messaging compliance readiness.
• Lead high‑severity incident response, root‑cause analysis, corrective‑action planning, and problem management.
• Define and monitor service KPIs/SLOs for directory, authentication, synchronization, mail flow, and email security.
• Review and approve complex architectural and operational changes, ensuring risk assessment, rollback planning, and documentation.
• Drive modernization, automation, technical debt reduction, configuration baselines, and runbook maturity.
• Partner with cybersecurity, cloud, VMware, platform, network, application, and compliance teams.
• Lead client/service governance forums and communicate priorities, risks, incidents, and service health in business terms.

Requirements:

• Active Secret clearance required.
• Candidates must have a Security or other DoD IAT‑II compliant certification.
• 10 years of experience in enterprise infrastructure, identity, directory, messaging, or Microsoft platform operations/engineering.
• 5 years of experience with Active Directory and Microsoft identity services in large hybrid enterprise environments.
• 5 years of experience with Exchange, Exchange Online, Microsoft 365 messaging, SMTP/mail flow, and email security operations.
• 3 years directly leading, supervising, or managing technical teams (preferably 10 personnel), including performance management, staffing, and coaching.
• Demonstrated experience with ITSM, incident/problem/change management, service metrics, documentation, and client/stakeholder governance.

Preferred:

• Experience with Microsoft Defender for Office 365, Proofpoint, Mimecast, Cisco email security, CyberArk, SailPoint, Infoblox, VMware, Azure, and ServiceNow.
• Experience with PowerShell automation, configuration-as-code, infrastructure-as-code, and operational dashboarding.
• Experience in regulated, public sector, defense, or other secured environments requiring audit evidence, privileged access controls, and formal change governance.
• Experience leading identity and messaging modernization programs (ADFS reduction, Conditional Access rollout, Exchange Online migration, on‑prem decommissioning, DMARC enforcement).
• Experience with formal people‑management training, performance management frameworks, or supervisory/leadership certifications.

Compensation: $102,800 - $150,000 per year

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