SUMMARY:

With 25 years of extensive IT hands - on experience, various professional certifications such as CISSP and MCSE, MCSA and MCITP, and DOD Top-Secret security clearance, I am looking opportunities to contribute my passion and expertise to best serve our customers as a Sr. Active Directory, Systems, Security, and Network Engineer and Administrator.

PROFESSIONAL EXPERIENCE:

Confidential

Enterprise Architect/SCCM Engineer

Responsibilities:

• Performs SCCM packaging duties to support IAVM remediation and software deployment in the enterprise, creates applications, configures deployments and monitors SCCM status and alerts.
• Participates in CCWG to advocate for change requests for the enterprise imaging team; Performs critical enterprise change request (ECR) and ITCR support to enterprise imaging team.
• Creates SOPs and technical documents for various SCCM functions and procedures, SCCM client troubleshooting, software packaging, and enterprise software change control.
• Worked with different branches on Windows server 2012/2016 upgrade and patching.
• Attended intensive Windows Active Directory Group Policy training, and got certified. Performed group policy object creation, configuration and implementation on DLA enterprise desktop management.
• Utilized PowerShell to develop and create packages, and to troubleshoot user account and computer account problems.

Confidential

Active Directory System Engineer

Responsibilities:

• Administered Active Directory and related infrastructure systems for the Confidential Operations and Security Center, the top-tier NOC for an internetwork of over one hundred thousand computers.
• Implemented and troubleshot domain controllers, active directory, group policies, DNS, DHCP, VMware, VMS, CCRI and other procedures and strategies.
• Expert-level knowledge of Windows desktop operating systems and applications, Windows 10, Windows Server 2008, Windows Server 2012, Office 2010.

Confidential

Senior Network Administrator, Sr. System Analyst, Sr. Network Administrator and Sr. IA Manager

Responsibilities:

• Responsible for the DOD project TAMIS (Training Ammunition Management Information System), a real-time application used by over 4,900 users worldwide
• Ensured the system was operational, secure, and accessible 24 hours a day
• Provided network infrastructure building and network management, built servers, performed maintenance, and performance enhancement, workstations and applications troubleshooting
• Planned, executed and implemented all the major changes and upgrades of the entire company's network infrastructure, operating systems, security mechanisms through physical site changes, Internet Service Providers changeover, production servers' move to Pentagon
• Upgraded from Windows NT Server 4.0 network, via Windows 2000 Advanced Server, to Windows 2003 and 2008 Enterprise Server; from Window NT Workstation 4.0, via Windows 2000, Windows XP, and Windows Vista, to Windows 7; from 32 bit to 64 bit computing environment, with more than hundreds of servers and workstations and staff turnovers
• Utilized Microsoft deployment and migration tools such as WDS, MDT, USMT, MDOP, AGPM as well as built-in tools like Performance, Resource & Reliability Monitor
• Researched, planned, configured, maintained and optimized the application configuration management strategies and solutions
• Provided troubleshooting of ticket systems from Seapine's Surround SCM and TestTrack Pro, via MKS's Source Integrity and Integrity Manager,
• Researched, formulated, and executed set of backup and disaster recovery and business continuity strategies and practices, using multi-level approaches of SDLT tape drives, tape library, DVD RW archives, Veritas backup software and Acronis Image Server, off-site storage strategies, and COOP plan to minimize business downtime
• Restored data upon request and do the COOP dry-run twice a year
• Worked closely with DOD IT team, IMCEN, and our Army customers to make sure system security, availability and integrity was up to the high DOD standards and requirements of DIACAP, AR 25, SSAA, COOP, SIP and DMP
• Provided system patching, IAVA remediation, and site auditing
• Installed CAC card single log-on solutions for our production server
• Troubleshot network facilities to include routers, switches, hubs, servers, PCs, hard drives, memories, RAID cards and RAID solutions, printers, network cards, cabling and wireless devices
• Performed systems administrator functions such as desktop support, server maintenance; user account management, permission and security checking; system malfunction troubleshooting; user support, hardware and software inventory control, driver and firmware update, and all applications, including SQL, Outlook, Visual Studio, Team Explorer, Secure FTP Server, Adobe, Office, Enterprise Architecture and all the related tools
• Identified and diagnosed problems and factors affecting network performance
• Installed and configured WatchGuard firewall solutions and intrusion detection systems and their upgrades
• Installed and supported VPN solutions, RDP, and iLo remote connections
• Installed and configured Symantec Endpoint Protection Antivirus systems to protect the network from virus, worms, malware, and other attacks
• Installed SSL certificates for all the web servers and enabled 128-bit encryption to ensure the secure communications between customers and our websites
• Built a certificate authority to create certificates for web services
• Built Windows 2008 Hyper V servers

Confidential

Network Administrator

Responsibilities:

• Performed network administrator duties at a public-trading company with 200 workstations and 30 servers,
• Planned and implemented the major network and server upgrade
• Executed the company wide changeover from one ISP to another,
• Responsible for implementing basic configuration changes on Cisco 2600 series and Livingston Portmaster routers
• Executed company's first Outlook Web Access Server using SSL on a Windows 2000 Server
• Secured entire corporate network behind Checkpoint Firewall version 4.1
• Implemented a security architecture that allowed for the forwarding of incoming email from a DMZ to a secured corporate Microsoft Exchange Server
• Implemented Scan Mail for Microsoft Exchange which scans all incoming and outgoing email for viruses
• Requisitioned and recommended various kinds of hardware for production and software development
• Planned, built, configured, and maintained new servers and workstations; Monitored server health with regard to CPU, RAM, hard disk utilization and network traffic analysis
• Configured NT system policies
• Applied a system-wide backup procedure which improved efficiency and data retention using Veritas Backup Exec
• Provided technical support to all end users running Windows 98, NT, ME, and 2000 for various applications and hardware, software and network services

Confidential

Network Support Engineer

Responsibilities:

• Supported an enterprise-level networking environment of 3700 staff and more than 4000 nodes
• Provided high quality service to customers in Windows network support and application troubleshooting