Engineer Software

Nimisha Bhatnagar

*.*******@*****.***

Ph: 805-***-****

Summary:

* ***** **** ** ********, DIAMETER, Virtualized PCRF, PGW

Experienced in Telecom OSS/BSS Subscriber Policy Management PCRF (Openet,Tekelec,Cisco), Data Mediation(Openet FusionWorks), Charging & Billing(Kenan)

Strong experience in Systems Integration configuration and testing of EPC core elements (PGW,PCRF,HSS,SPR) in client network

Familiar with DRA

Hands-on experience in Telecom Billing Configurations (Services, Packages/Calling Plans, Components, Contracts, Products/RCs, NRCs, Unit Credits, Discounts, Usage) on Kenan Billing system for Voice, Data and FIOS Verizon customers

Proficient in various SDLC practices and experienced in all stages of project life cycle including development, quality assurance, deployment, client reviews

Comprehensive problem solving abilities and effective communication skills

Certification and Training Courses

Openet DSD, FusionWorks, Policy Management(PCRF)

Telecom Billing Kenan

Openstack

5G Introduction

AGILE Methodology

Microsoft Certified Product Specialist

Education:

Bachelors in Computer Science

Technology Platforms used:

PCRF and Subscriber Management : Cisco Policy Suite, Openet PCRF, Tekelec/Oracle PCRF

Data Mediation: Openet Fusionworks, DSD

Telecom Billing: Kenan Billing suite

VoLTE Network Elements: GGSN(ASR5K)/PGW/PCEF, PCRF, HSS, OCS, P-CSCF

WiFi: Cisco ISG

Diameter interfaces: Gx(PCEF), Sh(SPR), Sy(OCS), Rx(IMS)

Network Protocols: Diameter, LDAP, TCP

Network Traffic Simulators: Seagull, DsTest, Jenkins(Automation Test Builds for CI/CD)

Scripting : Unix, XML, Python

Databases: Mongo, Oracle PL/SQL

Tools: Wireshark, tcpdump

Programming: C, C++, VC++(SDK and MFC)

Configuration management: CVS, SVN

Operating Systems: Windows, Linux/Unix

Current Employer: Comtec Consultants Inc

Network Policy Engineer – July 2013 till date

Current Project: Cisco PCRF(Cisco Policy Suite)

Responsibilities

Customer projects on CPS – AT&T, VZW, TSTT, Telmex, Entel Chile, Internal Practice.

NFV Openstack based PCRF installation and PCRF use case configurations for VZW

Consumer(Residential customers) and MPN(Mobile Private Network for Enterprise

customers).

Call flow testing(functional and performance) using DsTest, Jenkins(Automation

Test Builds for CI/CD), Seagull, Robot test automation framework, Python.

Monitor performance metrics (TPS, Response Time, Policy Exceptions, Diameter

Errors, Timeouts) on Grafana dashboards.

Troubleshoot call flow scenarios, RCA, use case configurations and feature integration.

Prepare solution MOPs, HLD, LLD, Call Flows.

Packet core network analysis using tools such as Wireshark to troubleshoot network call

flow errors.

Experience working on High Available (HA) systems and databases.

Experience with IMS environment.

Proficient with Gx, Sh, Sy, Rx, X1/X2 CALEA interfaces, Policy & Control charging

Functions.

UNIX / Linux Scripting.

Actively and consistently support all efforts to simplify and enhance the customer experience.

Environment:

Cisco Policy Suite/PCRF, Cisco PGW, Mongo database, Unix/Linux scripting, XML, Wireshark, Seagull traffic simulator, Jenkins traffic simulator(Automation Test Builds for CI/CD), DsTest traffic simulator, Robot test automation framework, Python scripts, Grafana Dashboards

Previous Customer Project: Tekelec/Oracle PCRF

Responsibilities

Lab verification of Engineering source/procedures provided in support of Installation/Configuration, Upgrade/Backout and Backup/Restore functionality/features of PCRF solution.

Develop and test MOPs for VZW 3G(UMTS),4G(IMS/LTE) networks.

Assist customer with product validation in Oracle/customer labs.

Work with the customer to understand system requirements and configure network elements.

Resolution of customer issues for the Design Support & Professional Services group.

Environment: Tekelec/Oracle Policy Management PCRF, Subscriber Data Management (SDM), Oracle PL/SQL, Unix Shell scripts, XML, Wireshark

Employer: OPENET TELECOM Inc

Senior Software Engineer – Apr 2010 to July 2013

Customer Project: Openet Data Mediation, Openet PCRF

Successfully delivered all phases of Subscriber Policy Charging solutions using Openet PCRF/Policy Manager and Data Mediation Fusionworks framework for customers Telus, US Cellular, AT&T.

Responsibilities

Work independently with little direction with a diverse team in different timezones.

Execute project lifecycle in Agile methodology environment.

Setup IOT, Functional, Non Functional and Performance QA environments.

Develop test plans for 3G(GGSN) and 4G/LTE(PGW) traffic use case scenarios .

Develop scripts for Functional and Performance/Load testing using Openet simulator frameworks to simulate PCEF Credit Control requests from LTE,GGSN network to PCRF and verified PCRF responses to ensure proper behavior.

Develop test data for Functional and Performance/Load testing simulators.

Persistently work through multiple iterations and changes across customer network as the project evolved.

Participate in QA and Customer document reviews, handled Jira ticket resolution for open issues and created Operations Guide.

Show strength in quickly adapting to changes and learning in aggressive work environment.

Handle feature requests for AT&T U-Verse and Voice tracks in FusionWorks

Develop PL/SQL scripts, Unix Shell scripts, DSD scripts.

Environment: Openet FusionWorks and Policy Manager(PCRF), DSD scripts(Openet proprietary development platform like C), IBM Solid DB, Oracle PL/SQL, Unix Shell scripts, Wireshark

Employer: ISTS WorldWide Inc

Software Engineer – Oct 2007 to Mar 2010

Customer Project- Verizon Telecom(Kenan Telecom Billing)

NorEaster Billing project involved Data Migration, System Upgrade and Production Support of legacy Kenan billing data for FairPoint Communications in 3 north east states NH, VT, MN.

Responsibilities

Initial Planning and Analysis of business and data mapping scenarios.

Resolve data migration errors, performed module configuration and testing.

Provide Production Support involving end to end execution of billing jobs, defect fixes of billing system processes.

Create billing data reports using Unix shell scripts and Oracle PL/SQL for FIOS users.

Environment: Kenan Telecom Billing platform, Oracle PL/SQL, Unix Shell scripts, SQL Loader, CVS

Customer Project- Accenture/Hawaiian Telecom(Kenan Telecom Billing)

Responsibilities

Validate Kenan billing configurations of billing entities - services, packages, components, products, contracts, discounts.

Perform Root Cause Analysis of system failures and reconciled errors before the bill cut.

Prepare Release Documentation.

Environment: Kenan Telecom Billing platform, Oracle PL/SQL, CVS

Customer Project- Capgemini/FairPoint Communications(Kenan Telecom Billing)

Responsibilities

Responsible for Data Mapping and Migration of Verizon's legacy Kenan billing data to an integrated platform being set up for 3 North East states NH, VT, MN at Fairpoint Communications and support the acquisition of billing assets from Verizon.

Detailed analysis of Data Mapping requirements and Kenan Billing solution proposed with the implementation plan.

Kenan Billing data migration validation.

Configure Services, Packages/Plans, Components, Contracts, Products and Product Lines, NRCs, Credits, and Discounts for customer accounts.

Environment: Kenan Telecom Billing platform, Oracle PL/SQL, Unix Shell scripts, SQL Loader, SVN

Employer: CSG Systems/Comverse

Software Engineer – Mar 2005 to Sep 2007

Customer Project- Kenan Telecom Billing

Kenan Billing handles customer billing activities during all phases of an account lifecycle.

Customer Center is Java based GUI which interfaces with middleware Tuxedo servers that load balance request/response transactions between GUI and the underlying business logic and database layer.

Responsibilities:

Work on software code enhancement requests from customers.

Troubleshoot database and installation issues.

Perform software code change impact assessments and documented Release Notes.

Create call flow diagrams.

Perform peer code reviews.

Work with a multi-discipline team to troubleshoot and resolve the issues identified during systems integration testing.

Develop new software features and provide Root Cause Analysis documentation of network issues.

Environment: Kenan Telecom Billing platform, C++, C, Unix (HP-UX, Sun Solaris), XML, Oracle PL/SQL, Tuxedo middleware, CVS

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