System Administrator Senior

KAISHENG WANG

*********@*****.*** 571-***-**** Oak Hill, VA 20171

Summary

Self-motivated and committed to working as part of effective teams. Proven history of success and detail-oriented work. . Skilled and qualified Cisco/F5 Big-IP certified professional to support in LAN and WAN environments. Quick to troubleshoot and successful at resolving diverse issues with hands-on experience in areas of system administration, implementation, and support. Knowledgeable and seasoned professional recognized for outstanding maintenance and troubleshooting abilities coupled with solid experience in various application stacks. Dedicated to implementing innovative solutions to solve technical challenges with over 15 years of experience. Experienced in Firewalls, VPNs, and Load Balancers technologies, understanding of operational dependencies of applications, networks, systems, security, and policy.

Skills

Network Firewall Management

Infrastructure Development

Performance Monitoring and Optimization

Server/Network Configuration

Operating System Configuration

Servers and Storage

LAN and WAN control

Router Installation and Optimization

Infrastructure Planning

VMware and Oracle VM

Virtual Machine Operation

Experience

Acro/BAE Sterling, VA

Senior System Engineer

08/2017 - Current

Built and oversaw network infrastructure comprised of various virtual products. The environment is based on Palo Alto FW, F5/A10 Load-balancers, Cisco/Dell devices, VMware ESXi, vCenter/vSAN technology.

Checked security methods, including firewalls and antivirus software to fully protect networks. Deployment on-premise Sophos, cloud Crawdstrike security solution.

Used expert-level administration and optimization of hosts and servers to facilitate high availability and appropriate resource management. Management VMware virtual environment, Virtual machine creation, vSAN operation.

Installed and configured RedHat Linux OS systems, application software and system management tools. DNS, NTP, LDAP services support

Designed operational support system to monitor, control, analyze and manage computer network. Implementation of Splunk and Cacti utilities.

Conducted high-level root-cause analysis for service interruptions, establishing preventive measures for future occurrences.

Oracle/GCI Reston, VA

Senior Systems Engineer

11/2011 - 07/2017

Managed and supported network infrastructure comprised of various virtual products, Fortigate FW, F5 Load-balancers, Riverbed platforms.

Managed and provisioned NetApp storage via SAN/NAS.

Handled troubleshooting tasks for Local Area Networks, Wide Area Networks.

Planned, implemented, and integrated updated system-oriented projects, RedHat/Oracle Linux servers update, migration, patch etc.

Performed root cause analysis and created corrective action strategies to mitigate risks.

Department of Energy/EES Germantown, MD

Senior System Administrator

11/2010 - 11/2011

Set up, optimized and managed network equipment, Cisco/Checkpoint platforms, HP/Dell switches.

Orchestrated and oversaw upgrades to system hardware and software, the environment was built on Solaris LDOM and Microsoft Active Directory in VMware vSphere.

Managed, troubleshot, backed up and restored data in Sun Solaris, RedHat Linux and Windows operating systems to provide comprehensive systems management and support.

Kept systems operating efficiently by performing necessary upgrades and repairs.

Audiopoint Bethesda, MD

System Administrator/System Engineer

06/2005 - 11/2010

Determined and alleviated hardware, software and network issues.

Supported, configured, maintained, and upgraded company networks and in-house servers. Worked on Cisco ASA FW appliance, router/switches, Netscreen/Juniper security appliance, NetScaler Load Balancers

Delivered reliable support for server-class systems, Sun Microsystems physical servers with Solaris OS running on top.

Monitored application servers, rapidly responding to faults and malfunctions.

Managed day-to-day storage equipment administration to promote optimal system asset application.

Education and Training

Queens College of The City University of New York Flushing, NY

Master of Science in Computer Sciences

05/2002

Tianjin University Tianjin, China

Bachelor of Science in Electrical Engineering

07/1992

Certifications

Cisco Certified Network Professional (CCNP)

F5 Certified BIG-IP Administrator, F5 network

VMware Certified Professional, Datacenter Virtualization, VMware

RedHat Certified System Administrator, RedHat

CompTIA Certified CE, Security+

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