SUMMARY:

• Consummate Wireless Engineer with expertise in EPC, CDMA, eHRPD,RAN, OAM,Control and IMS domain
• Astute strategic understanding of distributed Enterprise based J2EE, Client server, and messaging application
• Strong experience in Operating Systems, Database, Networking, APIs, Redundancy, Security, and Failover
• Strong communication and analytical skills and holds a Masters of engineering degree in Telecommunication Technology.
• Eligible to work in U.S. based on Permanent Residence status (Green Card).

TECHNICAL SKILLS:

Evolved Packet Core: EPS mobility and session management, Charging, Profiles and policies configuration, Fault and performance Management, Call Trace, OM counters, SGW/PGW/WMM upgrades/management/maintenance, Accounting

RAN: Upgrade, commissioning, enrollment, Work Order Creation and Activation, QOS, Call Trace, Fault management, configuration, mediation, discovery, backup/restore

Control Domain: Diameter base, Diameter based interfaces Gy,sh, rf, ro, 5780 DSC, PCC, PCRF, PCEF

OAM: Service Aware Manager planning, Security, ACLs Service Management, Fault Management, Configuration Management, Account Management, Certificate Management, Software upgrades, DFARF routing policies

Optimization: Network Performance optimization, Per Call Measurement Data, NUART, Analysis Desktop

Test Tools: LLDM XCAL, XCAP, eDat, WPS, NPO, MGTS, PASM, SAM - O, NEM, WPS, iperf, netstat, traceroute

Programming: Java, C, Python, bash Perl, OOP, API, Application Development, Automated scripts, JMS, SOAP, LAMP

Databases: Oracle 8/9/10g installation, configuration, PL/SQL, SQL *Plus, SQL developer, DML, DCL, DDL, mysql

Hardware: Sun Sparc, HP DL-380 blade, 6K Switches, ATCA, 7200 Routers, RAID, SUN HA, MSA-50, MDA, IOM

OS: Solaris 10 u4, RHEL 5.0/6.0, AIX, HP-UX 11, IRIX 6.5, Win 2003/2008 Enterprise, Mac,Vista, Win7

Networking: Routers 7200/7600, CAT65 Switch, Firewall rules, IOS, Wireshark, Redundancy, Failover, Spanning Tree, Routing protocols, Switching, Services, VPN, SIP

Protocols/interfaces: TMN, GTP, CMPv2, SNMPv3, IKE, IPsec, Netconf, GTP-C, GTP-U, s6a, s6b, s1mme,s5/s8, s11, s1U, Rf, ro, sh

PROFESSIONAL EXPERIENCE:

Confidential, Reston, VA

SME LTE OAM Engineer

• Working on eNodeB, Pico, MCO, MCI, MMBTS, 9471 MME/WMM, 8950 ID, 7550 MG SGW, 7750 MG PGW, 5780 DSC,7750 SR, 7750 SAR, 9500 MPRe, 5620 SAM, 9959 NPO, NEM, WPS to identify and resolve end-to-end performance and functional issues by working with internal teams
• Developed a proof-of-concept for Self Configuration (PnP) of 9764 Metro Cell Outdoor Deployment in Sprint Network which invloves installation and configuration of Certificate Management server, Security Gateway, Vital QIP, SAR, EMS server and NPO
• Configured online charging in ALU PGW Configure diameter peer & dcca profile and applied charging profile under PDN context
• Created two partitions which includes stateful FW configuration, application filters and charging groups
• Developed and executed Feature and Regression Tests to verify connectivity, mobility, performance measurement for various releases LE3.0 - LR13.3 loads of Core, RAN, Services, Certificate management server, 9959 NPOand 5620 SAM products
• Managed and mainatained RAN-FDD elements and card reset, event and object change logging, eNodeB database reconfiguration, and analysis of call traces
• Conducted configuration management over NETCONF through GUI-based online configuration, and bulk offline configuration through workorder (WO) file deployment, with 3GPP-compliant SOAP XML
• Analyzed fault management and alarm monitoring through the 5620 SAM GUI-based Alarm Window, and through 3GPP-compliant JMS-based OSSI for real-time monitoring and SOAP XML alarm retrieval
• Reviewed RAN features and capacity licensing, EPS topology and path management, security configuration including user security and IPsec and SON management including ANR and PCI functions
• Developed XML scripts for delta alarms in each new release validate and verify north bound interfaces and identify the correct format of faults feeds to OSS applications
• Planned, Installed and upgraded SAM-A and SAM-B in Network Readiness Lab, MOCN, and Development Lab and trained FIT team to repeat the documented MOP in the field
• Managing eNodeB, Pico Cell, SGW, PGW, MME/WMM,Small Cells and designed Policies, Mediation, Discovery rules
• Computed and analyzed configuration parameters, prepared snapshot instances, work orders and online/offline configuration parameter update to support ANR, Time Zone Management, Fault Management, amd MRO using customer specific template, Wireless provisioning system, Network Element Manager and Service Aware Manager
• Identified and debugged various SNMP trap, JMS probe, Synchronization, Provisioning, Network element Discovery, Alarm Management, Performance management using PCAP/Snoop, NMS server Log and Nodal Debug files
• Perform SAM, NPO, SGW, PGW, ENodeB software upgrade and executed regression integration and interoperability Test
• Planned the SAM migration to new super DMZ environment by preparing Firewall rules and migrating MME, PGW, SGW, ENodeB and MPRE and backhaul equipment
• Identified various issues during upgrade phase and worked with support to resolved issue with WMM, EnodeB, PGW, SGW, 7750 MG, 7705 MG and tracked it by creating Tickets
• Reviewed various counters and indicators in NPO to and calculated QOS, Unavailability, per call measurement data and logical parameters
• Managed various feature requirements including license for all RAN, Network Elements, SAM and NPO
• Assisted and supported customer, ALU NRT lab and FIT team on various Firewall, Interface, Connectivity, Product training, Installation, Configuration,, Tools issue
• Designed Acceptance Test, Exit Reports, progress reports, MOP, Knowledge Notes and identified Delta Alarms for each release

Senior Technical Analyst

• Worked on OCCAS, OCSG and OCMA and developed SIP servlets, messaging application and communication plug-in
• Developed SIP based proxy, Servlet, Registrar, B2BUA using JSR-116, JSR-289. JSR-209 specification in Eclipse IDE
• Resolved customer issues regarding SMS, MMS, SS7, Billing, SIP, TCAP, ISUP, INAP, CAP, performance using Parlay, Oracle Diagnostic Methodology, SOAPUI, Seagull, SIPp
• Capture and analyzed thread dumps, heap dumps, flight recording, logs, STDOUT, and resolved out-of - memory errors
• Installed and configured messaging and billing application and services using SOAPUI, Parlay, Weblogic and Oracle
• Developed scripts, mbeans, Diagnostic framework, instrumentation to clarify SIP compliance, JMS, High CPU usage issues
• Technical Tools: Weblogic 8.15, 9.1,10.3 & 11, WLSS, OCCAS, OCSB, Oracle 10g, RHEL 5, Solaris 10, CentOs, Eclipse IDE, JSR, SOA Facades, wireshark, tail, top, SNMP, JRockit Mission Controller, JRA, SIPp, and Memory Tool Analyzer

Senior System Engineer

• Designed simulation and load tests to verify and validate SCCP, TCAP, M3UA, LNP, LNR and SCTP for LRN-SCP
• Developed shell scripts to read log files and validate the TCAP, SCTP, M3UA, SCCP and level 3 messages
• Working with Linux, Wire Shark, Search and replace tools, Database, network services, SCTP, SS7, and SIGTRAN
• Technical Tools: MGTS, PASM, bash, AWK, Groovy Python, Centos and Oracle 11.

SOA Engineer

• Developed SOAP and rest based web services unit, functional and performance tests using Junit, maven and ant.
• Designed and executed functional test scripts for web services operation using SOAPUI, Groovy and Xpath
• Participated and played an active role in Joint development sessions, code reviews, and Software architecture meetings
• Technical Tools: ClearQuest Test manager, Rational Functional Tester, Rational Performance Tester, Solaris 10, Oracle 10g, SQL Server 2005, Eclipse, WebLogic, Apache and Clearcase.

System Test Engineer

• Broad experience in planning, optimization and management of wireless networks. Proficient in Ericsson wireless network infrastructure equipment (MSC, RBS, TEMS TI, TA, NPV) and O&M management platform (OSS-RC)—worked as a key staff member in the development, integration and testing of various software applications within Ericsson that supported Ericsson’s wireless infrastructure products such as wireless network planning, RF optimization and OSS-RC operation and management platform.
• Received service excellence award and recognition from Ericsson Inc. for major contributions in performance and quality improvements of Ericsson TEMS NPV and TEMS Automatic products.
• Performed data mining and root-cause analysis on OSS performance data and identified network problems areas.
• Performed requirements analysis, feasibility study and created prototypes for proof of concepts. Wrote Implementation Proposal, Feature Specification, OSS Installation, Administration and Commissioning Procedures.
• Developed integration scripts for installation, configuration, and commissioning of management applications and services on the OSS platform. Performed installation, commissioning, deployment and integration of OSS-RC network management applications.
• Developed workarounds, emergency correction packages, UNIX shell scripts and SQL stored procedures for automatic jumpstart installation and upgrade of Ericsson OSS-RC 3G platforms under VERITAS volume manager and RAID configuration. Developed IP services for OSS-RC CDMA2000 O&AM Intranet and disaster recovery solution.
• Developed codes for building OSS framework services, such as Network Elements Adaptors and performed configuration management, fault management and performance management of RAN network.
• Provided technical expertise, direction and recommended actions to system development team on engineering problems to correct or modify systems, and to select system components for upcoming products. Provided technical expertise and support to internal organizations including sales, product management and product development and manufacturing. Mentored less experienced design engineers in areas such as design standards, cost analysis, design techniques, debug techniques, and project management.
• Measured and analyzed the defect management key attributes defect density, by severity; number, per build, number of RFEs from Remedy and presented in the form of defect analysis radial chart. Managed functional test assets using ClearCase
• Installed and managed Oracle 10g/11, SQL Server 2005 database and managed schema, users, tables, control files, flash archive
• Administrated lab environment to execute Performance and UAT testing and managed installation, configuration and setup of Linux RHEL 5.0,Win server 2003, IIS, JBoss, CQTM, WebLogic, Tomcat, SharePoint 2007, AD, DNS, Firewall, Switch, VMware infrastructure and ESXi; Developed shell scripts to manage users, devices and services
• Administrated Rational ClearQuest Test manager and created asset registry records, iteration records, build values, configuration attributed and configuration value record Integrated RequisitePro requirements with Rational ClearQuest records.
• Technical Tools: Quality Center, Quick Test, Rational Functional Tester, Rational Performance Tester, Solaris 10, Oracle 10g, SQL Server 2005, Eclipse, WebLogic, Apache and CQTM.

Lead Software Test Engineer

• Designed and executed test plan and test suite for billing application server software - unit, functional, regression, acceptance, code coverage and performance testing
• Programmed functional tests scripts in Quick Test Professional and VbScript to verify event based subscription, messaging driven bean, PTP queue, and error destination by applying checkpoints, regular expressions, parameterization and automation object.
• Designed and executed performance test by creating virtual users and emulating production load using VuGen, and Controller
• Measured application, end-user, component response time and examined breakdown for package, class and method using Load Runner and Rational Performance Tester, and Sun SDK Profiling Tools
• Collected measurement data using system monitor and ARM - high processer, link utilization, excessive paging activity, memory leaks, higher error rates to identify potential problems by monitoring resource usage and application response time break down
• .Developed unit test automation framework, UAT, Code Coverage and Regression Testing using JUnit, Fitnesse and python.
• Defined traceability relationship between requirements and calculated requirement risks based upon analysis using Quality center.
• Worked on Oracle 10g - Data pump, SQL Loader, RMAN, ADDM, OEM, MMON, REDO Log, Flash Archive, PL/SQL, SQL Plus. Prepared the test data working with schema, roles, users, grant, alter, update, insert, join, correlated query and drop.
• Administered test environment; installed and configured RHEL4.0, Solaris 9.0, Oracle 10g, Windows 2003, QTP, Load Runner, Rational Performance Tester, JProbe, JUnit, Jakarta Commons, WebLogic server and workshop; Managed test assets using QC.
• Technical Tools: Quality Center, Quick Test, Selenium IDE, Jmeter, Solaris, Oracle, TOAD and Windows 2003 Enterprise

Software Validation Engineer

• Developed automated test suite for Mac software validation, base station, based upon broadband wireless access WiMax 802.16 .
• Automated the network entry based upon syncing, DL-MAP, UL-MAP, capabilities negotiation, registration using Quick Test..
• Administrated test environment comprises of SCM, libc, Perl, Perforce, ANVL, Linux Fedora Core, python, and Oracle 9i
• Technical Tools: Quick Test Astra, Linux, Solaris, Oracle, Perl and Windows 2003

Development Test Engineer

• Created automated test framework to identify specification-based function errors, performance errors, usage errors, and interface based errors tests for Content Services Gateway billing Protocol Description as per GTP specification.
• Developed unit and functional tests to verify and validate the interface between MMS and Billing interface for post paid and prepaid billing usage.
• Developed functional test cases for Content Services Gateway billing Protocol Description as per GTP using Quick Test Astra.
• Designed automated interactive test scripts against L2-L7 traffic - VoIP, SIP, HTTP, WAP, SMTP, FTP, IMAP, TFTP, SNMP, OSPF, RIP traffic across Content Service Gateway using BMA, Ethereal, Pagent, and Perl.
• Measured the performance of Content Service Gateway using Load Runner and JMeter by developing manual scenarios for IP fragmentation and out-of-order packets by applying policy based routing implemented on 7200VXR, 6509 Cat65k, CSG.
• Technical Tools: Cat6K Switch, CSG, 7200 routers, IOS, Solaris 9, Oracle

System and integration Test Engineer

• Planned, designed and executed automated performance test to verify and validate the messaging, verified the wireless gateway system performance conformance, identified performance bottle necks and performance degradation using LoadRunner.
• Developed tests scripts to verify provisioning functionality for subscriber, in downstream and upstream nodes using XML request/response method in Vitria System using Quick Test Astra.
• Technical Tools: Test Director, Quick Test Astra, Load Runner, Solaris 9, Monitor Master, WAP simulator, Oracle 9i, and Mysql.

System and Performance Engineer

• Measured the performance of streaming, mms, email, pim application WAP over 1X applications for VZW MSN portal, Yahoo Load runner and Grinder and developed custom code using LoadRunner and JMeter
• Developed and executed acceptance test procedure for SMTP relay server based upon SMTP AUTH and SASL.
• Scripted and tested pocket outlook object model interface for pim application running on smart phone i600 device.
• Technical Tools: Load Runner, Jmeter, Unix, AAA server

Software Test Engineer

• Identified test ideas and test cases for instant messaging application based upon Jabber protocols & J2EE Framework.
• Executed functional, white box, and GUI testing for unified messaging distributed application using QTP Astra and JUnit
• Built test environment comprises of Sun Solaris, Oracle 8, WebLogic6.1 Server, Apache, Jbuilder7.0, JUnit
• Created Stress and Scalability test suite against messaging server by emulating production load using VuGen in LoadRunner.
• Technical Tools: QTP Astra, JUnit, Oracle, and WebLogic

Senior Software and System test Consultant

• Developed manual and automated test script using Perl APIs for over the Air Provisioning application, the interface between Business logic server and SMSC for Preferred Roaming list project for data manipulation, parsing, scheduling, and updating.
• Consulted British Telecom for Billing, Provisioning, and Application programming interface issues and tested user interfaces for WAP services including the mHome, MyPhone, MX, UP.LINK, n-tier applications in Java, Cold Fusion, and JSP.
• Built test environment for prototype PRL Project comprises of Solaris 2.5, Oracle 8.17, MQ series, JBoss, MQ Series, Perl libraries using Gateway simulator 5, the interfaces between OPM, Proxies, and UP.LINK4.2
• Designed and developed SQL store procedures and functions and Perl scripts to provision subscriber using PL/SQL and Perl API.
• Developed shell scripts to manage services, provision subscriber in batch manner, monitor traffic and review log files
• Conducted training courses in portals, Portals, MyPhone, UNIX, UP. Link gateways and mentored new employees.
• Technical Tools: WinRunner, Perl, Solaris 2.6, Oracle 8.17, Grinder and MQ series

Software Design Verification Engineer

• Designed functional specification for Super Node billing application - File Transfer and Access Management Application within the constraints of the requirements, architecture, and development process for MTX for CDMA IS-95 network.
• Conducted code inspection and peer review for SBA software architecture for Mobile Switching Center.
• Built development environment of HP-UX11.0, AIX6.5, SDM, SBA, Clear Case, Sniff, Gateways, Routers, switches, TEAM. Configured Super Node Data Manager.
• Completed courses in RTOS, Wireless Networks, and Clear Case, TCP/IP, VoIP, IP Telephony.
• Technical Tools: RTOS, ClearCase, AIX, HP-UX, TEAM, C++, ClearQuest and Oracle.