SUMMARY:

Have worked on multi - vendor complex systems (with most Linux/Unix based applications) on integration and testing for over 15 years, ready for new challenge in either full time or contract position. Dedicated, eager to learn, self-driven and a great team player.

TECHNICAL SKILLS:

Telecommunications: Call Agent/TAS, IMS/CSCF/HSS, VOIP, SIP, MGCP, DOCSIS, MTA, CMTS, SS7, SIGTRAN, LNP, CNAM, ENAM, SBC

Testing/automation tools: Empirix Hammer, Wireshark, Splunk, SIP inspector, soapUI, GL-COM/iDATs, JIRA, TestLink, Selenium

OS/DB: Linux, Unix, MySQL, Oracle

Scripting: Perl scripting, Shell scripting, XML

Other Protocols: DNS, DHCP, NTP, LDAP

Cloud Computing: OpenStack, VMware

Networking: IP routing and switching (Cisco and Juniper), CCNA

Cisco UC: Call Manager, Call Manager Express, Cisco Unity, Project Management

PROFESSIONAL EXPERIENCE:

SENIOR ENGINEER

Confidential, Herndon, VA

Responsibilities:

• Perform feature, patch and major release upgrade and testing on following IMS/VOIP based products:
• ALU 5420 CTS, 5420 PCM, 5900 MRF, 1310 OMC-P, and 1360 COM
• Cisco Confidential, Confidential /VXSM, ITP, CMTS, MTA, ATA and IAD voice gateway
• Nokia HiQ, IMS
• Oracle SBC, Innomedia ESBC (for SIP trunking to IP-PBX)
• Developed test plans based on function specs & prepared detailed test reports for all testing activities at QA
• Developed test plan and performed certification testing on multiple vendor’s SIP MTAs with IMS, resolved and troubleshooting all issues through logs & debugs on MTA/P-CSCF and cable intercepts on CMTS
• Participated in web portal development on automation tool GL-COM/iDATs for commercial subscriber provisioning using SOAP/XML. Developed XML scripts for all business class features provisioning activities including queries, subscriber/unsubscribe and activation/de-activation
• Developed multiple Perl and Shell scripts to automate certain routine operation and testing activities
• Developed MOPs for operation department on patch upgrades for variety of products
• Assisted operation on maintenance window as requested
• Prepared training material and provided training to NOC engineers
• Played a key role in CTS expansion project on HP C7000 last year, which was interim phase for future CTS/PCM deployment on RHEL OpenStack. Main responsibilities include: design review with vendor, IP assignments, MOP reviews, HW acceptance testing, CTS/PCM/COM upgrade, COM integration with CTS, S-CSCF configuration for new TASs, test plan development and end-to-end testing with IMS. Installed HP-SIM VM on COM server through KVM, virt-clone and Linux Bridge. Monitored and managed VM using Virtual Machine Manager
• Reviewed OpenStack requirements for COM R5 (virtualization ready) with vendor on access, networking, storage and image.

NETWORK CONSULTING ENGINEER

Confidential, Herndon, VA

Responsibilities:

• Provide subscription based day2 service (both on-site and remote) to Confidential (8 years) and other major SP customers, troubleshooting the problems by analyzing the SIP, MGCP, SS7, Q.931 and H.323 traces from the BTS10200/PGW and the debug results from Confidential /VXSM/CMTS/ATA/IAD.
• Developed variety of method of procedures (MOPs) for customer operation and maintenance activities, such as cleanup database and re-grooming. Provided remote support for activities during maintenance window, such as patch upgrade and system backup and performed upgrade on-site as customer request.
• Developed training materials and provided multiple on-site training on Confidential VXSM/ITP/PGW/BAMS
• Analyzed call completion and dropped call rate for the Confidential cable customer. Provided detailed analysis and report on subscriber facing problems and variety of failed calls
• Developed Deployment Kit on Cisco BTS10200 Cable solution, which includes Low Level Design, Network Implementation Plan, and Network Ready for Use test plan, and Site Requirement Survey. LLD contains the detailed requirements for each components and detailed design on VLANs, Confidential /VISM interconnection to ATM backbone, SS7/PSTN interconnection, routing & dial-plan, DNS, NTP and security.
• Developed risk analysis for Confidential ITP releases and patches for customers, which includes list of fixed bugs and newly opened bugs, testing procedures for each fixed bug
• Provided Early Field Trial (EFT) technical support for variety of Cisco VOIP solutions both on-site and remotely, which includes Cisco Call Manager, Cisco Unity, and PGW2200. Main tasks include design review, developing Technical Implementation Plan, software installation, system provisioning & configuration, system integration and testing. Provided training to the system engineers and customer as required
• Developed responses to RFPs for potential customers on variety of Cisco VOIP solutions

SENIOR SS7 ENGINEER

Confidential, Vienna, VA

Responsibilities:

• Second and third level technical support for all SS7 related issues nationwide, which include A-link acceptance testing, CLASS features, LNP and CNAM testing and trouble shootings.
• Managed the SS7 cut-over project for 5 markets (from one SS7 provider to another): coordinated with providers; planed schedule; developed detailed test plans and MOPs which include detailed step by step actions and commands; resolved all issues generated by cut-over
• Managed all aspects of interconnection between Teligent and Confidential for first 10 markets, from initial design and planning to test and turn-up.
• Identified the lLECs & their access tandems, selected subtending tandem(s) for each Teligent Confidential .
• Designed interconnection trunk assignment on variety of trunk groups for each market
• Prepared routing table for each market initial switch load based on the Confidential

SENIOR ENGINEER

Confidential, McLean, VA

Responsibilities:

• Performed variety of tasks for Teligent as a consultant from 10/97 to 3/98
• Completed frequency planning of the expended system using Confidential ’ Planning tool (ANET)