OBJECTIVE:

Seeking a network engineer position where my knowledge and experience can be utilized.

SUMMARY:

• 14+ years of experience in IT network designing, configuring and troubleshooting networks and servers/computers.
• Experienced in setting up, configuring and troubleshooting different network equipments including Confidential routersswitches, firewalls, SourceFire IPS, WebSense, Check Point gateway, F5 BIGIP, Brocade and Barracuda load balancer.
• Excellent knowledge and experience in troubleshooting LAN, WAN and WiFi problem(both physical and logical issues).
• Expert knowledge of many different network protocols (e.g. TCP/IP, IPSec, BGP, SMTP, FTP, SNMP, etc).
• In depth knowledge of using different Windows Servers(e.g. DNS, DHCP, Active Directory, NPS).
• Proven ability to work effectively as an individual and as a team member in a highly stress and time critical environment.

TECHNICAL SKILLS/KNOWLEDGE:

Network protocols/technology: TCP/IP, RIP, OSPF, EIGRP, BGP, IPSec, PPP, MLPPP, NAT, PAT, STP, VTP, VLANs HSRP, Netflow, DHCP, DNS, SMTP, SNMP, ICMP, DSL, SONET, Ethernet, 802.11a/b/g/n/ac

Routers: Confidential 1841, 1941, 3825, 3845, 2511, 2811, 2600, 6130(DSLAM), 6400(NRP), 7204XVR, 7206 VXR

Switches: Confidential Catalyst 2950, 2960G, 2960S, 2960X. 3548, 3560E, 3560X, 3750G, 3750E, 3750X, 4500, 6509ECisco Nexus 5010, Confidential Nexus 5548UP and FEX, HP Procurve 2810, 2910

Security: Confidential ASA, PIX, Confidential AIP - SSM10, Check Point 12407 appliance and SMART-1 25, WebSense V10000

Load balancer: F5 BIGIP, A10, Brocade ServerIron-4G-SSL, Barracuda load balancer 440

VoIP: ShoreTel VoIP system, Jive

Wireless: Confidential WLAN controller and AP, Meru MC 3000 controller and AP208, AeroHive HiveManager and HiveAP 350

DNS &DHCP: Microsoft DNS and DHCP server, MetaIP DNS and DHCP SA 550 appliance

Microsoft servers: Windows 2000, 2003, 2008, 2012

Network monitor and troubleshooting tool: Solarwinds Orion, PRTG, Intermapper, Look@LAN, Liebert Nform, Confidential IMECisco Network Assistant, nmap, NESSUS, tcpdump/windump, Wireshark

Trouble Ticket System: IssueAware, Remedy ARS, ServiceNow, BridgeTrak, Mantis, SysAid SANS SECURITY502 Perimeter Protection In-Depth, SANS AUD507 Auditing Networks, Perimeters, and Systems.

PROFESSIONAL EXPERIENCE:

Confidential, Columbia, Maryland

Lead Network Engineer

Responsibilities:

• Lead a team of 3 network and telecom engineers responsible for overseeing a large scale enterprise network( Confidential routers, switches, ASAs, WLAN and F5).
• Supervise, train and manage the work load of junior network engineers and telecom engineer.
• Project management - manage network and telecom projects to assure they are on time and on budget.
• Responsible for monitoring, configuring and troubleshooting multiple data center, corporate, and remote ffices' Confidential based network.
• Configure MPLS, IPSec VPN and DMVPN to connect multiple data centers, corporate offices, remote ffices and AWS together.
• Manage and configure Confidential Nexus switches and FEX in multiple data centers.
• Experience managing AWS network and DNS related resources(Route53, VPC, static routes, etc).
• Proficient in configuring NATs and ACLs in both firewalls and routers to allow or deny access to data center and corporate resources according to business needs.
• Excellent troubleshooting skills and knowledge on routing, switching, wireless and load balancing.
• Proficient using different routing protocols(e.g. EIGRP, BGP) to connect multiple networks together.
• Configure and manage F5 BIGIP and A10 load balancers with in depth knowledge on creating and modifying VIPs, POOLs and iRULEs.
• Manage and maintain company’s public domains and DNS records.
• Create, renew and delete Entrust issued SSL s according to business needs.
• Manage WebSense and SourceFire IPS to secure our network.
• Maintain and regularly update network diagrams and documentations(Visio, Excel, Word, Google docs).
• Excellent knowledge using Solarwinds to monitor network equipments, to run script on network devicesand generate necessary reports.
• Collaborate with other IT teams(e.g. System Administration) to support business needs/changes.
• Simultaneously work on multiple projects/tickets, prioritize them and update status on tickets promptly.
• Work with different vendors and ISPs to resolve any network and phone related problems.

Confidential, Beltsville, Maryland

Network Engineer

Responsibilities:

• Oversee the entire enterprise network infrastructure including routers, switches, firewall, load balancers and wireless network.
• Manage and responsible for company’s overall network security(e.g. firewalls, IPS, URL Filtering, etc).
• Configure, troubleshoot, update Confidential routers, switches, ASAs/PIX, Check Point firewalls.
• Manage the Enterprise wireless network to make sure it's secure and functional.
• Manage, configure and troubleshoot the ShoreTel VoIP system(switch QoS, vlan, DHCP, etc).
• Collaborate with IT manager and co-workers to manage the datacenter which has over hundred of servers.
• Perform regular network reviews with manager to improve network infrastructure and security.
• Secure network infrastructure by following and implementing the best security practices.
• Manage multiple network/internet circuits for different sites including T1, T3, OC3s and Ethernet circuits.
• Configure and troubleshoot remote access VPN and site to site VPN.
• Deploy, configure and troubleshoot the Brocade and Barracuda network load balancers.
• Sniff and analyze network packets for troubleshooting network problems.
• Responsible for maintaining and updating domains and DNS entries for the company.
• Regularly work with Windows administrators for setting up and configuring Windows servers.
• Configure and update Paessler’s PRTG to monitor network devices and servers using SNMP.
• Monitor data center’s commercial AC and UPS units using Liebert’s Nform software.
• Configure and setup enterprise FTP servers using Serv-U FTP server.
• Maintain and update network diagrams and documents(e.g. Visio, Excel).

Confidential, Washington, DC

Network Engineer

Responsibilities:

• Design, install, maintain and troubleshoot the entire Confidential infrastructure in Confidential including the router, access switch, multilayer switch, ASA, ASA-SSM IPS module.
• Secure the network infrastructure by implementing best practice layer 2 and layer 3 defense in the switches, firewalls, and routers(e.g. DHCP snooping, port-security, access-list).
• Monitor network traffic and identify potential network problems using network monitoring tools.
• Design and implement QoS in the network to efficiently utilize the network bandwidth.
• Monitor the ASA firewall log and the IPS alarms on a daily basis to prevent and recognize attacks.
• Configure and troubleshoot remote access VPN (IPSec and SSL) and site to site VPN.
• Design and maintain both the DNS and DHCP infrastructure in Confidential .
• Design and maintain the wireless network in Confidential .
• Setup, maintain and delete user accounts and groups in Windows 2003 Active Directory.
• Troubleshoot and resolve any computer and printer related hardware and software problems.
• Deploy Windows and applications updates through BigFix Enterprise Server.
• Resolve any audio/video and video conference problems in all the classrooms and conference rooms.
• Troubleshoot and resolve any telephone(ISDN and analog) and TV related problems.
• Maintain and update network diagrams and documentations.

Confidential, Ashburn, Virginia

Tier 3 DSL Network Support

Responsibilities:

• Work in DSL NOC to troubleshoot DSL network’s physical and logical problems.
• Configure and troubleshoot Confidential routers(2511, 6130, 6400, 7206 VXR, 7513), ATM switch(8600)Paradyne 8820DSLAM, and Redback SMS-100 router.
• Manage and update network configurations using Netprovision network management software.
• Troubleshoot and identify ATM backbone network problems.
• Troubleshoot DHCP, DNS, PPPoE, TCP/IP, ATM and different network layers and protocols problems.
• Work with field technicians to troubleshoot cabling and hardware problems in the CO and in the field.
• Analyze MLT(metallic loop test) results to determine physical problems on local loop.
• Provide telephone support to customers with DSL and computer related problems.

Confidential, Linthicum, Maryland

Implementation Support Engineer

Responsibilities:

• Responsible for providing technical support and troubleshooting customers’ SONET(OC 3/12/48/192) network problems.
• Provide onsite and telephone support to customers’ network issues and problems.
• Perform software and hardware upgrades for customers’ production network.
• Deploy new products and set up new SONET networks for customers.
• Understand customer requirements and assist in the development of method of procedure (MOP).
• Make emergency decisions for customers to restore traffic in critical situations.
• Assist in the execution of customized customer test plans.

Confidential, Houston, Texas

Senior Field Test Engineer

Responsibilities:

• Perform system level test and turn up for brand new optical/DWDM networks(long haul and metro).
• Act as a leader in managing and new testers.
• Document system data and submit regular system reports.
• Familiar with using different test sets (e.g. digital light wave, OSA, OTDR) for troubleshooting.
• Work as a team with other testers, and communicate closely with technical support and engineering group.