Open to opportunities

Roberto Rosario

@robertorosario

Message

Enterprise identity and systems leader modernizing Microsoft platforms for secure campus operations.

United States

Message

What I'm looking for

I’m looking for a senior role where I can lead enterprise identity and collaboration platform modernization—governing delivery with cross-functional partners, automating operations with PowerShell, and improving security, usability, and service outcomes for a complex organization.

I’m an executive technology leader with 17+ years of progressive experience driving digital innovation, enterprise platform strategy, and institutional optimization at Columbia University. I lead cross-functional initiatives that modernize collaboration platforms, simplify administrative work, and improve service delivery for students, faculty, staff, and executive leadership.

My core strength is enterprise platforms—especially Microsoft 365 and identity and access management (Active Directory, Azure AD / Entra ID)—paired with hybrid cloud expertise. I bring a data-informed decision-making approach with a strong focus on usability and accessibility, translating institutional priorities into practical, technology-enabled solutions.

In my current role as Sr. Systems Engineer, Identity & Infrastructure, I administer Active Directory and Entra ID account lifecycle for 120,000+ accounts and resolve 15–20+ identity and access incidents weekly. I also automate BeyondTrust PAM agent coverage and PowerShell workflows (reporting, bulk attribute extraction, and account creation) to improve reliability and reduce administrative overhead.

Previously, I served as Technology Operations Lead (Systems Administrator) for ~1,900 users and managed device deployments through Intune/SCCM-based MDM policies to improve endpoint compliance and supportability. Before that, I was Manager, Technology for the Office of the President—leading secure cloud enablement and an executive email migration to Microsoft 365 while eliminating legacy NAS by migrating to Box enterprise storage.

Experience

Work history, roles, and key accomplishments

Current

Sr. Systems Engineer

Current

Columbia University Information Technology (CUIT)

Nov 2025 - Present (6 months)

Administered Active Directory and Microsoft Entra ID account lifecycle for a 120,000+ account university environment, managing creation, affiliation, attribute updates, and deactivation. Resolved 15–20+ weekly identity and access incidents (Entra ID sync, MFA enrollment, Azure role assignments, and license management) and automated BeyondTrust PAM enrollment and reporting with PowerShell.

Active Directory Entra ID Microsoft 365 Administration Identity & Access Management PowerShell MFA SSL Certificate Management

Technology Operations Lead

Columbia University (SIPA)

Mar 2024 - Nov 2025 (1 year 8 months)

Led day-to-day IT operations for ~1,900 users, coordinating with central IT and school leadership to deliver high-availability, secure digital experiences. Improved service delivery by identifying and fixing workflow pain points across AD access, Microsoft 365, email/calendar, and device posture, and increased endpoint compliance through Intune/SCCM MDM policy deployment.

Active Directory Microsoft 365 Administration Identity & Access Management Intune SCCM End Point Compliance Troubleshooting Service Delivery

Manager, Technology

Columbia University

Nov 2019 - Mar 2024 (4 years 4 months)

Led technology strategy and operations for the Office of the President, supporting two presidents during organizational transitions and serving as a primary technology advisor to executive leadership. Modernized collaboration and communication by rolling out RingCentral, Box, Airtable, and Microsoft 365, executing a secure hybrid identity migration for executive email, and eliminating legacy NAS;

Microsoft 365 Hybrid Identity Cloud Enablement Vendor Management IT Governance Identity Migrations AV Telepresence Support Network Wi Fi Planning

Assistant Manager, Technology

Columbia University Facilities & Operations

Dec 2015 - Nov 2019 (3 years 11 months)

Provided advanced IT leadership and support to 2,000+ personnel, ensuring enterprise tools enabled critical campus services and day-to-day operations. Managed Active Directory provisioning and access for operational units and built AxisTV digital-signage training to enable self-management and reduce central support demand.

Active Directory Access Management Windows Server Enterprise IT

Assistant Manager, Technology

Columbia University

Jul 2009 - Dec 2015 (6 years 5 months)

Supported technology services across Dining, Campus Sustainability, Event Management, Housing, Mail, Print, and Transportation by connecting stakeholders with reliable digital tools. Led technology readiness for 8,600-student check-in and reduced POS upgrade installation time from 60+ minutes to ~15 minutes while maintaining PCI-DSS compliance.

Network Readiness POS Infrastructure Support PCI DSS Stakeholder Management

Network Analyst

Columbia University

Dec 2007 - Jul 2009 (1 year 7 months)

Automated copier meter-read retrieval using scripting and SQL queries, saving approximately $30,000 versus a third-party solution and improving data accuracy and reporting. Built print-job archival automation to maintain network-share compliance with quotas and organizational standards.

SQL Scripting Network Operations Reporting & Analytics Print Infrastructure Compliance Monitoring

Education

Degrees, certifications, and relevant coursework

Columbia University School of Professional Studies

Master of Technology Management (Executives), Technology Management

2024 - 2026

Master of Technology Management (Executives) focusing on technology strategy, digital innovation, institutional optimization, and change leadership in complex organizations.