SUMMARY:

• 17+ years of professional Software Architect, Design and Development experience mainly in Next Generation Charging Systems (BSSF), VoIP, AAA products and in Telecom 2G/3G/LTE(CCN/OCC) charging gateway products and VoLTE, with MTAS as AS.
• Currently working for DAT(Design Architect Team) for Next Generation Charging Systems (BSSF) for Telecom BSS Systems.
• Involved in solution design for the Product Customization for T - Mobile customers in CBiO Solution.
• Involved in solving Customer's Hot Escalations in CCN for operators like MTN South-Africa & SINGTEL-SINGAPORE.
• Involved in OCC Transfer project from SWEDEN to INDIA, for System Architect role.
• Have good knowledge in LTE-Data charging/Policy-Control/ Gy / Gx/ Rf/ Ro-Diameter interface & AAA-Diameter protocol.
• Individual contributor towards design & development of protocol stacks viz. Diameter Base Protocol, STUN,RTP-RELAY and MGCP.
• Possess very good working experience Linux, CISCO- IOS, Distributed OS(DICOS), Embedded OS(VxWorks).
• Possess very good programming skills in C, C++ and JAVA.
• Possess very good in Software Design & Architecture - around 10 Years.
• Possess good scripting skills in TCL/TK & Shell.
• Has good understanding of OSGi, REST,OPENAM/IDM and SSO.
• Has good understanding of networking technologies like SDN and NFV.
• Possess good knowledge in L3 Protocols - IPv4, ICMP.
• Have contributed for DRA(ie. Diameter Routing Agent) proposal.
• Have good working experience in the following fields
• Ericcson Charging System product viz CCN (Charging Control Node)-Charging Gateway for UMTS/LTE.
• Contributed to Confidential Policy Control Framework design for Mobile Broadband Charging.
• AAA protocols like Diameter and its applications like Credit Control application, Rf, Ro, Gy, Gx and S6B diameter interfaces and Diameter Load Balancer.
• Cisco PDN Gateway, mainly in diameter interfaces (S6B), NASREQ.
• VOIP protocol design & development (SIP, MGCP, STUN, RTP, RTCP, SDP)
• Embedded systems (Set Top Box, ATA, Sandpoint Board, Windows PDA & PDN-GW)
• Carrier grade systems like Confidential TSP (Telecom Server platform)-a clustered platform.
• Networking technologies - TCP/IP, socket programming
• Linux multi-threaded architecture (pThreads), Linux IPC and Linux Sockets, Linux SMP (Multi­core Processors) systems.
• Tornado II, Clear Case, CVS, GDB, MAKE, LINT, cscope, source insight, Visual Studio,eclipse
• Have worked in the client location (Dallas-USA) for the customer Samsung Telecommunications America.
• Have worked for HCL’s major clients like CISCO, PLUSTEK, Confidential .
• Have good exposure to Agile Methodology and Waterfall model.
• Certifications - TMFORUM-Information Framework Foundation Level.

PROFESSIONAL EXPERIENCE

Confidential

Senior System Architect

Responsibilities:

• BSS Systems (CHA PAC)
• DAT member/DAT-PO
• SME (Subject Matter Expert) role for the team.
• DAT-PO for the BUC CHA GUI and solution design.
• Individually contributed in writing requirements specification document and solution description document.
• Involved in Architecture and high level design.
• Product Owner, took end to end responsibility of features in CHA PAC from requirements (BUC study), solution design(BSUC study), software design(Implementation Proposal)and testing(Test analysis).
• Solution Design for SSO for CHA GUI using OPENAM/IDM.
• Solution Design for Diameter Load Balancer.

SKILLS: JAVA, IOT, OSS/BSS,DIAMETER,3GPP-Interface - Gy,Ro,Bx

Confidential

System Architect

Responsibilities:

• OCC - Online Charging Control
• DAT member/DAT-PO
• SME (Subject Matter Expert) role for the team.
• As PO guiding the team and in terms of technical and coaching them same.
• OCC acts as Charging Gateway for 3G/4G networks developed using Java Technologies.
• Had written requirements specifications for Gy,Gx interfaces for OCC.
• Involved in Design & Coding of features in OCC like Account Finder Query.
• Had written Product Specification Document for Customers like Movie Star.
• Involved in Architecture and high level design.

SKILLS: JAVA, DIAMETER, Gy, Gx

Confidential

System Architect

Responsibilities:

• CCN- Charging Control Node
• SME (Subject Matter Expert) role for the team.
• CCN acts as Charging gateway for 2/3G/LTE networks.
• Doing PO(Product Owner) role, for MBC(Mobile Broadband Charging) and VoLTE & Master Key PMR for CCN
• Developed Gx interface for Mobile Broadband Charging
• Technical contribution to Policy Control Framework Design.
• Product Sustenance -Product customizations & Trouble report fixing.
• Involved in DRA proposal.
• Sentinel License Framework Design and development in CCN.
• Contributed to Node Improvement Program-Proposed ideas for CCN/OCC improvement.
• Number Normalization framework design and development in CCN.

SKILLS: C++, Distributed Systems, TSP, Charging Systems, ANTLR, TSP, VoLTE, Diameter, Gy, Gx Interfaces, Diameter Routing Agent

Confidential

Technical Specialist

Responsibilities:

• S6B & RF DIAMETER INTERFACE DESIGN FOR PDN-GW
• Design and development of S6B and Rf diameter interface for Cisco IOS.
• Technical guidance for the team for the development of unit test plan and diameter server simulator part.
• Design and development of Diameter applications like S6b and Rf for PDN-GW. The S6b interface provides the authorization functionalities when UE attaches to the EPC using PMIPv6 mode.
• The Rf interface provides the offline charging functionalities for the PDN-GW.
• This project also involves the design and development of diameter server simulator part for S6b and Rf.
• Design and development of Diameter stack based on the RFC 3588 and 3539, which is AAA protocol used for Authentication, Authorization and Accounting.

SKILLS: C, CISCO IOS, DIAMETER, PDN-GW, DIAMETER INTERFACE-S6b, Rf

Confidential

Team Leader

Responsibilities:

• VOIP Projects (SIP/STUN/B2BUA/RTP/RTCP)
• Design and Development of NAT Traversal of VOIP CALL
• Design and development of Simple Traversal of UDP through NAT (i.e. STUN) client and connection -reuse draft of IETF, enhancement in sip stack for rport support, enhancement in SDP module for rtcp attribute support and enhancement in VTF (Voice Test Framework) for STUN.
• Development of signaling relay component (i.e. B2BUA) and media relay component (i.e. RTP- RELAY), which will be used for making VOIP calls between two SIP entities (i.e. UA) when they are separated by a Firewall
• This project involves in development of SIP conformance test plan and automation of test cases.

SKILLS: C, Linux, B2BUA, RTP, RTCP, SIP, NAT

Confidential

Team Leader

Responsibilities:

• VOIP Projects (SIP/RTP/RTCP)
• Design of porting strategy of SIP stack for WINCE platform.
• Solution Design of middle ware for Connected Sensors which uses ZigBee protocol.
• Porting of SIPSTACK to Mobile Platform which is running on WinCE.
• The work includes enhancement of RTP Stack to WinCE platform and development of RTP payload format for DTMF digit (RFC 2833).
• The work involves in design and development of middleware architecture for MANET.
• This complete work is done at Confidential .
• Using ZigBee sensors, analysis of Notifications and development of Middleware.

SKILLS: C, UPNP, WINCE, ZIGBEE, VOIP, SIP, RTP, RTCP

Confidential

Team Leader

Responsibilities:

• VOIP Projects (MGCP/RTP/RTCP)
• Design of porting strategy for signaling part of MGCP stack from Linux to VxWorks.
• Setup of Build environment for MGCP stack in Tornado II.
• Ported the signaling part of MGCP stack to VxWorks.
• Development of FXO package support in MGCP stack.
• Development of sample application on the top of MGCP stacks in VxWorks.
• Development of test cases for testing the MGCP stack and authentication support in the stack. DESCRIPTION:
• Development of Test suites for testing the feature.
• Porting and sustenance of MGCP Stack (on Media gateway) from Linux OS for Quicknet phone Jack (analog telephone adaptor) to VxWorks OS on to couple of customer owned analog telephone boards (both wireless and wired).
• Porting of RTP stack in Linux onto VxWorks platform.
• Addition of FXO package support to MGCP stacks.
• Addition of fax package support to MGCP stacks.
• Addition of Authentication package support to MGCP stacks.
• Development of MGCP Test frame work for testing MGCP signaling and authentication support on MG.
• Design and Development of MGCP protocol stack, as per DOCSIS (Data Over Cable Service Interface Specifications) defined by IPCABLECOM project group for Residential Gateway.

SKILLS: C, Linux, VxWorks, ATA (Residential Gateway), TCL/TK, VOIP (MGCP, RTP, RTCP, SDP)

Confidential

Team Member

Responsibilities:

• Porting UCLinux to Sandpoint Board
• Porting UCLinux to PPC Board.
• This project involves porting of UCLinux (Linux for MMU less processors) to Motorola PowerPC 755 based “Sandpoint” motherboard and to study its performance against normal Linux for the same board

SKILLS: C, UcLinux, Embedded System (Sandpoint Board)

Confidential

Team Member

Responsibilities:

• Automation of Protocol Translation (in X.25 PVC) Feature
• Development of Test Plan.
• Automation of Test cases.
• This project involves feature testing of Protocol Translations.
• The feature is X.25 PVCs are translated to TCP and vice versa.
• To test this feature test plan, is developed and the test cases are automated.

SKILLS: TCL/TK

Confidential

Team member

Responsibilities:

• Development embedded applications for SetTop Box.
• Development of embedded device drivers.
• Design and development of user interface for on screen displays (OSD), controlled by SETTOP boxes.
• Development of data base module for SETTOP box applications.
• Development of auto tuner driver module.
• Development of skew control module.
• Development of Remote Control Interface module.
• Development of Real-time clock and TDT module.
• Porting of Diseqc (Digital Satellite and Equipment Control) to another client project.

SKILLS: C, RTOS(STLITE), Embedded Systems (Setup Box)