IT System Administrator
Resume:
Warllen DaCosta
Taunton, MA, *****
Cell: (978) 578- 0484
**************@*******.***
http://linkedin.com/in/warllen-dacosta-4b0aa017
Professional Summary
Detail-oriented IT System Administrator with 10+ years of experience supporting enterprise infrastructure, system migrations, endpoint management, cloud services, and virtualization. Strong background in managing hybrid environments using VMware, Windows Server, Microsoft Intune, and Active Directory. Skilled in automating processes, ensuring data security, configuring zero-touch deployments, and providing high-level user support. Proven ability to lead projects, improve operational efficiency, and implement IT best practices in both on-premises and cloud-based systems.
Key Skills
Systems Administration: Windows Server 2012–2022, Active Directory, Azure AD (Entra ID)
Cloud & Identity Management: Microsoft Intune, MDM, JAMF, MFA, SSO, Hybrid AD Integration, M365
Virtualization & Backup: VMware vCenter (6.0–8.0), Veeam, Server Imaging, Certificate Authority
Scripting & Tools: PowerShell (basic), NetSuite, SharePoint, OneDrive Policy Management
Operating Systems: Windows 98–11, macOS, MS-DOS
Languages/Databases: C++, HTML, SQL, Microsoft Access
Support & Deployment: Hardware/Software Troubleshooting, End-User Support, ITIL Concepts
Project Leadership: Cross-Department Collaboration, Process Optimization, Technical Documentation
Professional Experience
IT System Administrator
AP&S Law – Providence, RI
Apr 2023 – Mar 2025
Migrated vCenter infrastructure from version 6.0 to 8.0 to ensure enterprise-grade security and compliance.
Redesigned VMware clusters to consolidate multiple server roles and improve resource utilization.
Automated onboarding through Microsoft Intune zero-touch deployment, enhancing efficiency.
Managed M365 platform for enterprise end users
Implemented hardened M365 security and procedures
Upgraded Veeam backup architecture to support consistent, incremental daily backups.
Managed 32 production servers and coordinated system-wide patching and monitoring.
Configured hybrid identity and access management using Azure/Entra AD and MFA.
Integrated on-prem AD-reliant apps into Azure AD for cloud compatibility.
Implemented server performance monitoring and alerting for critical data flow across firm locations.
Streamlined SharePoint and OneDrive settings to improve internal collaboration and external security.
Provided executive-level technical support and rapid response to system-critical incidents.
Created Group Policies and a certificate authority server to strengthen endpoint and data security.
Improved Veeam backup routines and disaster recovery preparedness.
IT Support Team Lead
QuickBase Inc. – Boston, MA
Jun 2017 – Mar 2023
Led a distributed IT support team across states and countries, overseeing endpoint configuration and support.
Designed and maintained zero-touch provisioning workflows using Microsoft Intune.
Spearheaded deployment of JAMF MDM for all corporate Apple devices, ensuring compliance.
Managed M365 platform for enterprise end users
Implemented hardened M365 security and procedures
Resolved escalated hardware and software incidents, including support for C-level executives.
Authored SOPs and technical documentation for onboarding, deployment, and support processes.
IT Help Desk Technician II
Olympus SSA Inc. – Waltham, MA
Jan 2012 – May 2017
Migrated 600+ devices from Windows XP to Windows 7 and later led a Windows 10 rollout for 800+ endpoints.
Coordinated domain migration for 600+ users with minimal business disruption.
Managed and maintained virtual machines supporting shipping/logistics departments.
Provided daily support for 15–20 incidents, including desktop, application, and network issues.
Education
Johnson & Wales University – Providence, RI
B.S. in Technology Service Management, May 2010
A.S. in Computer Technology Services, May 2008
Certifications & Training
Technical Project Management
IT Call Management Systems
Information Security Fundamentals
Microcomputer Hardware & Software Support
Help Desk Concepts
C+ Programming
Database Concepts
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