Kevin Mckenna
Holbrook
Summary
Dynamic IT professional with over 25 years of experience managing and optimizing IT infrastructures across diverse sectors, including education, finance, legal, and healthcare. Expertise includes overseeing VMware, Hyper-V, and Citrix environments while enhancing both Azure and on-premises resources. Proven track record in supporting NetSuite and ServiceNow CRM platforms, along with comprehensive systems administration skills encompassing Microsoft 365 E3/E5 administration, Intune device management, and advanced security solutions utilizing NextGen firewall technologies such as Cisco Firepower, Palo Alto, Fortinet, and Meraki. Committed to driving system performance and ensuring data integrity through efficient WAN configurations, advanced storage management, and robust IAM and Zero Trust security protocols.
Overview
20
20
years of professional experience
1
1
Certification
Work History
Senior Systems Administrator (Contract)
Robert Half
Boston, MA
07.2024 - 05.2026
- Project-based assignments with multiple clients in healthcare, education and financial sectors. Managed virtual server infrastructure (VMware, Hyper-V) and SAN storage (Pure, NetApp, Dell) and cloud-based storage and applications in AWS and Azure cloud environments.
- Support for ServiceNow and NetSuite CRM. Collaborated with third-party vendors for Edge security monitoring and alerts, maintaining patching cadence and strengthening network security posture.
- Microsoft 365 enterprise licensing and application deployment; administer Conditional Access, Zero Trust policies, SSO tools (Okta, Duo, Entra ID) and manage switching, wireless APs, and next-gen firewalls (Palo Alto, Cisco Meraki, Fortinet, Barracuda). Managed device lifecycle and endpoint security with Intune, ManageEngine, NinjaOne, Cisco Firepower, Microsoft Defender, and CrowdStrike Falcon. Support collaboration platforms (Teams, Slack, SharePoint) and ensure reliable access across client sites.
Senior System Administrator (Contract)
Olink Proteomics
Waltham, MA
01.2024 - 07.2024
- Directed Azure production for large hybrid environments, ensuring seamless operations and security. Enhanced system efficiency and user experience through the implementation of Microsoft 365 Windows management.
- Employed PRTG Network monitoring and NinjaOne tools for proactive issue resolution and system uptime. Collaborated with the European HQ IT Operations team on infrastructure projects, driving successful outcomes.
- Leveraged Fortinet Security and switching solutions to maintain robust network security and performance.
Senior System Administrator (Contract)
Collette Travel
Pawtucket, RI
06.2023 - 01.2024
- Administered Azure AD/Entra and O365 accounts, ensuring optimal functionality and user accessibility. Managed VMware vSphere 7 servers to enhance performance and reliability for critical applications.
- Deployed and supervised Citrix VDI solutions, significantly boosting remote productivity. Implemented security protocols via Microsoft Intune for effective patch management and compliance.
- Optimized application license utilization through Manage Engine Desktop Central.
VP, Senior Infrastructure Engineer
Citizens Bank
Westwood, MA
01.2017 - 05.2023
- Oversaw a large data production environment, managing 30+ virtual Windows servers and Hyper-V Hosts within a secure, segmented architecture. Directed data backups and warehousing, conducting semi-annual disaster recovery exercises for business continuity.
- Hyper-V host resource management. Championed project management for the procedural retirement of physical environments, ensuring secure destruction of legacy data and storage devices.
- Maintained industry compliant maintenance logs and presented monthly reports to consumer banking security panel.
- Confluence and Jira project tracking and management. Collaboration with Data Analytics team to review infrastructure performance and provide guidance on enhancements.
- Facilitated user training for SAS in AWS, enhancing proficiency in data tools. Collaborated with the Intelligence Enablement team to integrate third-party resources, successfully transitioning from physical to cloud environments.
Senior Information Technology Technician
The Phia Group, LLC
Braintree, MA
01.2015 - 01.2017
- Managed Tier 2 and 3 technical support in HIPAA compliant environment, resolving complex issues efficiently. Administered and optimized Exchange 2010 clusters, ensuring high availability of services and performance stability.
- Managing Hyper-V virtual host for Dev environment. Oversaw HP ProLiant Blade Servers with OneView, enhancing server performance through proactive monitoring and maintenance.
- Implemented data backup strategies utilizing Backup Exec, ensuring data integrity and security across systems. Utilized Dell KACE 1000 for Service Desk and Device Management, streamlining operational workflows.
Senior System Administrator
Energy Services Group
Rockland, MA
01.2013 - 01.2015
- Administered a mixed Windows environment, focusing on VMWare vSphere ESXi virtual host management and EMC VNX and Data Domain SAN administration.
- Managed SCCM client and server operations, overseeing image deployment and ensuring efficient software distribution.
- Optimized enterprise backup solutions utilizing EMC Data Domain and Networker for effective data retention strategies.
- Implemented security patches and developed disaster recovery strategies, enhancing system reliability across operations.
- Collaborated on IT projects, actively driving technological innovation and improving operational efficiency.
Information Technology Operations Manager
Sullivan & McLaughlin Companies
Boston, MA
01.2012 - 01.2013
- Directed technology support for 400+ users, significantly enhancing productivity by resolving complex IT issues.
- Managed 12 onsite servers and over 200 network devices, ensuring optimal network operations and performance.
- Complete refresh of network infrastructure including cabling, switching, and relocation of network operations center.
- Implemented Meraki AP’s and MDM solutions, improving device management, connectivity and mobile security, and completed a major communications refresh from onsite Blackberry BES Server to iPhones.
- Administered SQL Server databases for Finance, configured Juniper SSG320 security switches and optimized VPNs for enhanced network security.
- Formal documentation of new network topography and asset management. Department budgeting and vendor management.
- Spearheaded IT operations, achieving substantial improvements in network reliability and overall user satisfaction.
Network Administrator
U.S. Department of Labor
Boston, MA
01.2006 - 01.2011
- Delivered Tier 1-3 desktop and network support across multiple agencies in Boston, ensuring operational continuity and effective service delivery.
- Administered user accounts and security protocols via Active Directory, enhancing user management efficiency and security policies.
- Optimized network performance through strategic management of Cisco Catalyst switches, ensuring continuous reliability and performance.
- Diagnosed and resolved network issues swiftly, minimizing downtime and enhancing service delivery for end-users.
Education
AA - Recording Arts and Technology
Massachusetts College of Communications
Boston, MA05.1992
Certificate - Microsoft Computer, Server and Network Administration
Boston University Corporate Education School
Boston, MA05.1998
Skills
- Senior Systems Administration
- Azure Cloud Administration
- Service Desk
- Information System Design
- Computer Networking
- Virtualization
- Network Management
- Sec-Ops
- Application Support
- Project Management
- Vendor Communications
- Team Leadership
Certification
A+ PC SUPPORT
MCSE
MCSA
MCP
MCDBA
VMWARE VCP
MICROSOFT AZURE ADMINISTRATION
Languages
English
Timeline
Senior Systems Administrator (Contract)
Robert Half
07.2024 - 05.2026
Senior System Administrator (Contract)
Olink Proteomics
01.2024 - 07.2024
Senior System Administrator (Contract)
Collette Travel
06.2023 - 01.2024
VP, Senior Infrastructure Engineer
Citizens Bank
01.2017 - 05.2023
Senior Information Technology Technician
The Phia Group, LLC
01.2015 - 01.2017
Senior System Administrator
Energy Services Group
01.2013 - 01.2015
Information Technology Operations Manager
Sullivan & McLaughlin Companies
01.2012 - 01.2013
Network Administrator
U.S. Department of Labor
01.2006 - 01.2011
Certificate - Microsoft Computer, Server and Network Administration
Boston University Corporate Education School
AA - Recording Arts and Technology
Massachusetts College of Communications