Dante’ R. Sheffield
** ******** **., ******** ** 30060~ 205-***-****
***************@*******.***
AD Engineer/ System Administrator
Accomplished IT professional with demonstrated success implementing strategic IT initiatives that improve business functionality with positive impacts on the bottom line. Skilled project manager, with proven ability to lead and motivate teams to maximize productivity. Possess first rate effective communication and collaboration skills to lead, instruct and work in concert with diverse groups.
Qualification Highlights
Corporate IT Trainer
Project Management
Operations Management
Technical Analysis
Migrations/Upgrades
IT Strategy Development
System Integration
Technical Experience
Operations Systems: Windows Server 2000/2003/2008/2012/2016/2019, Windows 2000/XP/Vista/7/8, Red Hat Linux 5x.,6x, OEL 5/6, SUSE 11,12
Cloud Technologies: GCP and Azure
Hardware: Compaq ProLiant servers and DeskPro client PC’s, Dell PowerEdge/Power, Vault servers and desktop equipment, Blade Servers, SAN storage, DAS & NAS storage, Linksys wireless routers, APC Smart UPS
Software: Microsoft Exchange 2003/2007/2010/2013, Microsoft Lync 2010/2013, IIS Administration, MS Office, Symantec Anti-Virus/Backup Exec, PC Anywhere, Palm OS, Norton Ghost, DameWare, Antigen E-Mail Filter, VMware, Zoom Admin, Citrix, Altiris, Trend Micro anti-virus solutions, WSUS, Microsoft System Center, Share Point 2010, Slack Administration, NetWare Administrator, Blackberry Enterprise Server administration and configuration, Box Admin, NAS, Crystal Reports 9.0, IPSwitch, Hyena, VB Scripting, Active Role Server, ADMT, NET IQ Migration Tool
Network Topologies/Protocols/Technologies: Fast Ethernet, Token Ring, ATM, Frame Relay, T1, DSL, IIS, TCP/IP, UDP, DNS, DHCP, WINS, SMTP, FTP, Telnet, POP3, ARP, SNMP, HTTP, HTML, RPC
PROFESSIONAL EXPERIENCE
Bank of America, Charlotte, NC 5/2021 – 9/2025
Sr. System Administrator/Info Sec
Planning, installation and maintenance on IBM Security Verify Privilege Vault (VPV) and Cyber Ark (Privilege Identity Management Technology Solutions) to include the following:
1.Architecture design and data flow charts
2.Environmental sizing
3.Cyber Ark: Installation and configuration of Privilege Vault Web Access (PVWA), Central Policy Manger (CPM), and Vault servers using Microsoft Windows server 2019\2016.
4.Veryify Privilege Vault: Installation and configuration of Web UI, Distributed Engine, and RabbitMQ servers using Microsoft Windows server 2019.
5.Working with Bank of America internal teams to get the following services configured: MFA/SSO, Logging (Splunk), DBaaS, HSM, GPOs for security hardening, Load Balancing (WIPs and VIPs) and Firewall Rules.
6.Upgrading the application to the lates versions.
7.Created Power shell scripts to assist with automation of installations, upgrades and local password admin rotation.
8.OS and Application patching
9.End User and Administrator Documentation
Server builds in BOA Cloud (VMs)
Involved in creating CRQ's for generating and deploying certs to servers.
Google, Sunnyvale, CA 12/2017 – 7/2020
Windows/System Engineer
Upgraded E-discovery Legal Software – Axcelerate, to latest version.
Involved in server builds to include vertical and horizontal sizing of the environment.
Configured GCP instance for Googles Legal team.
Worked with Google internal IT teams to implement new GPOs for the E-discovery users and servers.
Worked on the installation, configuration and maintenance of Windows Server 2008/2012/2016, OEL, SUSE 11/12 on both VM’s and physical servers.
Automated ACL sync, Puppet runs and Temp cleanup jobs using PowerShell scripts and task scheduler.
Working on Google's proprietary monitoring tools and code labs used for software package deployments and application updates.
Created PowerShell modules and deployed them to the service internal applications.
Automated application workflow and windows patching via PowerShell scripts.
Involved in troubleshooting on physical Dell and HP servers; worked with internal Hardware Operations team drive replacement and upgrades.
Involved in creating CSR's for generating and deploying certs to the servers.
Providing on-call support 24/7
Q2 EBanking, Austin TX 7/2016 – 9/2017
Sr. Systems Engineer
GPO analysis and OU design
Created and Implemented Group Policies at Domain and OU levels.
Architect and Implementation of IIS Application Request Routing (ARR)
Architect and Implementation of IIS in a Dual Active Data Center Environment
Installation and Configuration of DFSR and NLB on Windows Server 2012 and SUSE 11/12
Assisted in the Architectural Design of Active Directory
PowerShell Scripting and Automation
Building and Editing of Virtual Machines in VMWare and in vSphere Web Client
Created Documentation for the Installation and Configuration of DFSR, NLB, IIS ARR and Shared configuration.
United Bank of Scotland, Weehawken NJ 1/2016 – 12/2016
Sr. Systems Engineer
Migrate/upgrade/consolidate 5000+ servers and 130+ applications/websites worldwide off Windows Server 2003 platform.
Scope includes both physical and virtual servers targeted for Widows Server 2012 or 2008 platforms.
Migration of websites from IIS 6.0 to IIS 7.5 or 8.0
Use various tools to evaluate applications for migration, remediation, or retirement.
Responsible for server/application migration through all environments: Dev/QA/UAT/Prod.
Initiated decommission requests for servers to be retired.
Active Directory Maintenance and Meta-Data Cleanup
PowerShell Scripting
Interactive Communications, Atlanta GA 4/2015 – 1/2016
Sr. Systems Engineer
Installation, configuration and maintenance of the following Roles and Features of Windows Server 2012 R2:
Terminal Sever Farms (Remote Desktop)
Failover Clusters
PowerShell Scripting and Automation
GPO analysis and OU design
Created and Implemented Group Policies at Domain and OU levels.
Maintenance and Configuration of SCCM
Assisted in the Architectural Design of Active Directory
Assisted in the Hardening of Active Directory with Microsoft Security Configuration Manager and Group Policies
Configured DHCP scopes for static and dynamic machines in the AD infrastructure.
Decommissioning of Domain Controllers and the accompanying AD meta data clean-up
Supplied Level 3 support for MS Exchange 2010, Lync 2010, Active Directory, DNS and DHCP issues.
Energen Corporation, Birmingham AL 11/2014 – 4/2015
Systems Engineer III
Installation, configuration and maintenance of Microsoft Lync 2013
Configured WSUS on Microsoft Server 2012
Created and implemented Group Policies
PowerShell Scripting and Automation
Building and Editing of Virtual Machines in VMWare and in vSphere Web Client
Created Documentation for the VM Server Build Process
Supplied Level 3 support for Exchange 2013 issues.
Supplied Level 3 support for Active Directory and DNS issues.
Active Directory Maintenance and Cleanup
Rocktenn, Norcross GA 10/2013 – 10/2014
AD Engineer
Assisted in the migration of over 20,000 AD objects to include Users and Workstations using ADMT.
Assisted in the migration of over 200 Servers using Net IQ and ADMT Migration Wizards
Supplied Level 3 support for Escalated Migration Issues
Supplied Level 2 support for Exchange Migration Issues
Coordinated with Application owners to test, scheduled and migrate Application Servers and there accompanying database servers.
Created and Assisted in the implementation of Group Policies
Created Documentation for Implementation and Process Control
Planning and Migration of over 2,000 Domain and Local Groups using Net IQ and ADMT Migration Wizards
Catamaran RX, Rockville MD 11/2012 – 10/2013
Sr. Systems Engineer
Lead on migrating and planning the upgrade of Domain Controllers from Server 2003 to Sever 2008 R2
Configured RODCs in DMZ and the Internal AD Environment
Level 3 support for Escalated Operational Issues
Assisted in the Architectural Design of Active Directory
Migrated the PGP server during the Exchange Migration
Assisted in operational issues after the Exchange Migration
Created all Mail Exchanger (MX) and (SRV) records for the Exchange Migration
Importing of 1500 plus users into AD using VB scripting
Configured DHCP scopes for Telecommunications and also for static and dynamic machines in the AD infrastructure
Decommissioning of Domain Controllers and the accompanying AD clean-up
Creation and Implementation of Group Policies
Migration of Web Applications from IIS 6 to II 7.5
Planning and Migration of FTP servers to another site
Published Desktops and Application in Citrix XenApp 6.5
Creation and Testing of New FTP sites (secure and non-secure)
Establishment Trust relationships between existing and new domains
Designed AD-based solutions that meet the customers’ short and long-term goals and complied with Microsoft Best Practices
Miller-Coors, Chicago IL 09/2011 – 09/2012
Exchange Design Engineer
Designed and deployed multiple Exchange 2010 Enterprise Servers for the Enterprise Messaging” divisions
Analyzed and design plans, as well as performed assistance with discovery, assessment, POC and deployment
Configured TMG Server deployment, Distributed Applications, and Message Hygiene Solutions
Configured the design to support 700+ windows servers and 15,000 Exchange mailboxes
Implemented Lync 2010 with high availability
Configured Lync Server Roles with several levels of redundancy
Implemented PowerShell scripting to migrate thousands of user accounts and mailboxes
Performed all tasks without utilizing any third party tools but with custom scripts and EMC
Virtualized the production, development, and quality assurance environments using VMware ESX
Assisted in the Architectural Design of Active Directory
Used Microsoft’s Active Directory Migration Tool for the cross-forest migration phase
Provided documentation on all the key phases – Discovery, Assessment, Design, and Proof of Concept
ITT Technical Institute, Birmingham AL 09/2009 – 08/2011
IT Instructor
Use lectures, demonstrations, and PowerPoint presentations to convey the subject matter.
Inform students about recent trends on the subject matter.
Record students’ progress by conducting tests on the given subject matter.
Motivate students to create committees to help solve problems in an organized manner.
Discuss and probe weaker students about problems they are facing regarding the subject matter and help them overcome them.
Subjects taught: Network Standards and Protocols; Microsoft Server 2003 and 2008 to include Active Directory, DNS, DHCP configuration; Windows XP and 2007; Introduction to Linux; Introduction to Personal Computers to include training for A+ Certification; Microsoft Exchange Server.
Ameren, St. Louis MO 08/2007 – 07/2008
Sr. Windows Server Administrator
Re-designed and managed the enterprise Active Directory and Exchange architecture.
Performed server upgrades.
Prepared brand new servers for clean Exchange installation, which included disk partition, disk formatting and RAID configuration
Daily Support and migration planning for users bases of over 30,000 users in multiple environments
Daily management, analysis and troubleshooting of 9000+ Lotus Notes 6.5.2 mail files/users
Evaluated customers’ existing technical environments
Determined customer’s present and future needs
Monitored daily backup jobs on Exchange servers and implanted tape rotation policy
Created procedural documentation and policies for proper operation of mail system
Designed Exchange-based solutions that meet the customers’ short and long-term goals and comply with Best Practices
Peac Corporation, Birmingham, Alabama 01/03 – 05/07
Systems Engineer
Analyze, customize and performance tuning on four SQL databases.
Supply management, staff, and clients with database reports using Crystal Reports 9.0 and Advantage Database Architect.
Project Lead on all system audit analysis and data integrity assignments.
Manage a staff of 12, which includes: scheduling, performance reviews, production reports and disciplinary actions.
Train management and staff on Microsoft Office and a variety of Company Applications.
Responsible for the installation, maintenance and troubleshooting on Windows Server 2003, XP workstations; Xerox and HP printers; and peripheral devices.
US Army Reserve, Birmingham, Alabama 02/01 – 02/07
Information System Analyst
Installation and configuration of domains using Windows 2000 and 2003 Servers; To include installation and deployment of Windows Update Services, creating print queues and installing printers, and the creation and management of users and security groups in User Manager and Active Directory.
Installation and Configuration of MS Exchange Server 5.5 and 2000; to include creating email accounts and distribution lists, creating and setting permissions on public folders, and configuring an accompanying OWA server.
Provide end user support on Windows 2000 and XP workstations.
Train soldiers on how to us Microsoft Office products.
Perform an array of hardware modifications to include diagnosing and replacing disk drives, memory, and multimedia devices along with accompanying software reconfigurations.
Southern Company - Alabama Power, Birmingham, Alabama 12/2000 - 01/03
Information Systems Specialist
Installation, maintenance and troubleshooting on Windows Server 2000, Windows NT 4.0 and XP workstations; Lexmark, Xerox and HP printers and peripheral devices.
Software and hardware testing and implementation in a XP environment; Hardware upgrades including disk drives, memory, multimedia and video interface installations and accompanying software reconfigurations in Windows XP and NT 4.0 environments.
Also assisted clients with decisions on the best technology for their business needs.
Education
Miles College, Birmingham AL 08/97 - 05/00
Bachelor of Science in Mathematics
Minor in Computer Science