IT Infrastructure Lead: Scale & Integrate Acquired Brands

Mosaic Service Partners; Washington (District of Columbia); Hybrid; USD 135,000 - 150,000; Full time

Benefits offered by this job

Health benefits

401K

Parental leave

Travel reimbursement

Job summary

Mosaic Service Partners in Washington, DC is seeking an IT Infrastructure Lead to own the enterprise technology foundation that lets the platform scale. This hands‑on role drives identity, endpoint, collaboration platforms, cloud governance, and MSP relationships across brands during post‑acquisition integration.

Reporting to the VP of Technology, you will implement Day 1–Day 90 playbooks, set security baselines, and migrate brand environments onto Mosaic standards.

Qualifications

• 5+ years in IT infrastructure or IT operations with hands-on ownership.
• Experience standardizing a fragmented, multi-site IT environment across locations or business units.
• Deep hands-on command of Microsoft 365 (Entra ID, Exchange Online, Intune), Active Directory, endpoint and device management, MFA and identity.
• Experience standardizing and governing an M365 estate at the tenant level: SharePoint and OneDrive architecture, Teams provisioning, external-sharing and data-loss policy, license optimization.
• Proven ownership of an MSP relationship, ideally including an MSSP, with a track record of holding partners accountable to SLAs and outcomes.

Responsibilities

• Own IT integration for every acquisition. Build and run a repeatable Day 1 through Day 90 playbook spanning diligence, access and admin transition, onboarding, support routing, device standards, and escalation.
• Set and enforce the Mosaic identity and endpoint baseline. Define one standard for identity, MFA, device management, and endpoint protection, and migrate active users and company‑managed devices across all brand partners onto it.
• Standardize and govern the Microsoft 365 estate. Own tenant strategy and consolidation, SharePoint and OneDrive architecture, Teams provisioning, external‑sharing and data‑loss policy, and licensing, so Mosaic stores, shares, and secures business data one governed way.
• Assess and remediate inherited environments. Separate immediate security and access risks from longer‑term cleanup, then drive fixes to completion.
• Manage the MSP and security partners. Hold CloudIT and security vendors to clear standards, SLAs, and escalation paths, diagnose whether failures stem from vendor capability or weak internal ownership.
• Run onboarding, offboarding, and end‑user support. Own accounts, access, permissions, and devices across brands, operate responsive support without becoming a field bottleneck, and drive root‑cause fixes over repeat tickets.
• Govern the infrastructure estate. Maintain one reliable source of truth for users, devices, licenses, SaaS, domains, DNS, and cloud accounts; govern production cloud for ownership, access, logging, monitoring, and cost; and set practical guardrails for approved AI and SaaS tools to curb sprawl without slowing the business.
• Support HQ and the field directly. Provide hands‑on HQ support, including office A/V and conference‑room reliability, and travel to brand partners that lack local IT coverage to resolve issues and reinforce standards.
• Perform other duties as assigned or needed.

Skills

IT infrastructure

End-user services

Hybrid work coordination

Acquisition integration

MS Entra ID / MFA

Tools

Microsoft 365

Entra ID

Exchange Online

Intune

Active Directory

SharePoint

OneDrive

DNS

Job description

Mosaic Service Partners in Washington, DC is seeking an IT Infrastructure Lead to own the enterprise technology foundation that lets the platform scale. This hands‑on role drives identity, endpoint, collaboration platforms, cloud governance, and MSP relationships across brands during post‑acquisition integration.

Reporting to the VP of Technology, you will implement Day 1–Day 90 playbooks, set security baselines, and migrate brand environments onto Mosaic standards.