A top client is modernizing its Microsoft 365 ecosystem by moving to a multi-tenant, DBA-aligned architecture to improve performance, modern collaboration, and regulatory isolation. This role provides hands-on architectural leadership to validate, design, and guide implementation of the new multi-tenant M365 model covering Exchange Online, Identity, and Collaboration workloads.Key Objectives- Validate the current M365 and identity stack for a large-scale, multi-tenant future state.
- Assess and refine the DBA-aligned multi-tenant model, including email routing, domains, identity, and collaboration impacts.
- Identify architectural risks, constraints, compliance considerations, and long-term evolution paths.
- Evaluate implications for Teams, SharePoint, OneDrive, and future Copilot enablement.
Primary ResponsibilitiesArchitecture & Strategy- Develop architectural documentation for Exchange Online multi-tenant patterns, domain/DNS scaling, identity strategy, and cross-tenant collaboration/isolation.
- Lead deep-dives with Microsoft and technical partners.
Program & Executive Support- Provide architectural input for executive decision materials (feasibility, risks, trade-offs).
- Participate in leadership sessions to clarify architectural direction.
Technical Oversight- Review vendor deliverables for accuracy and alignment.
- Ensure consistency across IAM, Security, Operations, and Compliance.
- Define non-functional requirements (security, scale, monitoring, operations).
Migration & Implementation Guidance- Validate migration patterns, throughput, and automation needs.
- Guide cross-tenant identity/mailbox cutovers, multi-practice users, office isolation, and DNS automation at scale.
- Produce ADRs, validations, and design redlines.
Required Skills & ExperienceTechnical Expertise- Deep architecture experience with Exchange Online, hybrid deployments, and large migrations.
- Strong Entra ID (Azure AD) identity design knowledge.
- Expertise in multi-tenant M365, domains/DNS, federation, email routing.
- Experience with M365 Lighthouse and automation (PowerShell, Graph API).
Migration- Delivered migrations of 25k-100k+ users in regulated environments.
- Familiarity with Quest ODM, BitTitan, and Microsoft native tooling.
Security & Compliance- Understanding of regulatory isolation, DLP, sensitivity labels, transport rules, audit & monitoring models.
Leadership- Excellent communicator able to present complex architecture to executives.
- Strong cross-functional leadership across IAM, Security, Ops, and PMO.
Key Deliverables- Multi-Tenant Email Architecture Blueprint
- Identity Alignment Assessment
- Domain/DNS Strategy at large scale
- High-level Migration Architecture & Runbook
- Non-Functional Requirements (security, reliability, observability, maintainability)
- Risk analyses, technical updates, ADRs, and governance documentation
Job Type & LocationThis is a Contract position based out of Fort Mill, SC.
Pay and BenefitsThe pay range for this position is $60.00 - $90.00/hr.
Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave)
Workplace TypeThis is a hybrid position in Fort Mill,SC.
Application DeadlineThis position is anticipated to close on Feb 11, 2026.
>About TEKsystems:
We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.
The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.
About TEKsystems and TEKsystems Global Services We're a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We're a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We're strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We're building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.
The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.
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