Lead Active Directory Engineer

This role is **four** days onsite at our Seneca One Buffalo, NY location, with the flexibility to work from home one day per week

**Overview:**

Responsible for designing, securing, and operating Microsoft Active Directory Domain Services (AD DS) in regulated, high-availability environments. Acts as knowledge resource for and trains less experienced engineers. Completes day-to-day support activities and special projects.

**Primary Responsibilities:**

**Enterprise Active Directory Architecture**

+ Proven expertise supporting **large-scale, Tier‑1 identity infrastructures** with strict uptime, latency, and change‑control requirements
+ Strong experience with:
+ Multi-domain and multi-forest designs aligned to business units, regions, or regulatory boundaries
+ Forest and external trusts supporting M&A, joint ventures, and third-party integrations
+ FSMO role placement optimized for resilience and auditability
+ Advanced under...