Old Airport Road, Bangalore - ******, Karnataka, India.

Tel no: +919********* ? email: acdp8e@r.postjobfree.com

Professional Summary:

. Senior-Developer/Lead with 11 years of experience in Networking and

Telecom product Software Architecture, Design and Development in C, C++,

Python.

. Strong VOIP, SIP, IMS, SS7 & SIGTRAN products experience, software design

and development experience in SIP(gruu, outbound, regevent, presence,

event, subscribe/notify), Diameter(Cx, Dx, Sh), H323, MTP3, SCCP, M3UA,

SUA protocol components, and worked for requirements from products such

as CSCF, RNC, MSC, HLR, UMG. Part of key network solutions such as RNC

Pooling, MSC Pooling, MSC Dual-Homing, CSCF Load Balancing, MRFC/IVR

systems etc.

. Knowledge of LTE, VoLTE, SRVCC technologies, LTE Attach, Handover, VoLTE

call flows.

. Strong L2/L3 switching and routing experience with knowledge of various

routing protocols such as RIP, OSPF, BGP, MBGP, MPLS, MPLS-L3-VPNs and

IPv6 protocols. And in switching protocols such as 802.1d(STP),

802.1w(RSTP).

. Knowledge of OpenFlow protocol and SDN, NFV, NV technologies. Hands on

with Floodlight, Openstack, RabbitMQ, MongoDB, ZeroMQ. Researching on

possibility of Telecom NFV such as MRFC and RNC function virtualization.

. Strong in XML with design and development experience in components like

CCXML, VXML for CTI and MRFC platforms and EXI(Highly efficient XML

compression ratio 1:100) for binarization of XML and direct SAX decoding

from EXI compressed XML

. Experience in developing products/protocols from scratch beginning with

Customer Requirement Capturing and Analysis, Alternative Concepts and

Feasibility study, Architecture, Design, and proof of concept

implementation to full product implementation.

. Exposure to design and implementation of Load Balancing and High

Availability (Hot and Cold Standby) features in the protocol components

designed and implemented.

. Self-motivated achiever with ability to deliver on committed timelines

and can work in teams to achieve results.

Skills Summary:

OS, Languages and Packages:

C, C++, C#, Python, ZeroMQ, RabbitMQ, MongoDB, MS-SQL

Clearcase, SVN, Visual Studio, gdb, sed, SIPp, Open Stack, Mininet, Intel

VTune Performance Analyzer

Linux, Windows, VxWorks, VirtualBox

Software Skills and Methodologies: Networking Technologies & Protocols:

Multi-threaded Design and IP Routing and Switching, UDP, TCP/IP,

Development, Debugging SCTP, RIP, EIGRP, OSPF, BGP, MPLS,

Performance and Scalability MPLS-L3VPN, MBGP, 802.1d, 802.1w

Analysis, Tuning and optimization IMS, LTE, VOIP, SIP, Diameter, H323,

CPU Burst avoiding by specific SS7 (MTP3, SCCP) & SIGTRAN(M3UA, SUA)

optimizations and Load shredding XML, CCXML(Platform for Portable

Practiced Agile, Scrum and Lean Soft-switch Application),

methodologies. Followed Scrumban VXML(Platform for Portable IVR

(from Scrum and Kanban) method. Application), EXI(Efficient Xml

Interchange),

Open Flow, SDN, Open Stack,

Floodlight, NFV

Education:

. BE (CSE) PSG College of Technology, Bharathiar University, India

CGPA - 9.13 2003

. Diploma (EEE) Thiyagarajar Polytechnic, Periyar University, India.

97.75% 2000

Patents:

MULTICAST MESSAGE COPYING PROCESSING METHOD (Link) - United States

PCT/CN2010/073416 - This is an invention for an XML Content router

without inspecting deep inside the packet

Professional Experience:

Senior Technical Lead, Calsoft Labs, India

Oct-2012 - Till Date

SDN/NFV Applications development

- Used Floodlight SDN framework with Open Flow protocol and Open Stack

Neutron.

- Prototyped and Developed SDN application for MPLS-L3-VPN hosting for

Service provider. Gathering the entire Service provider network

topology and infusing MPLS transports channels into it and laying out

VPNs based on Service provider configuration of Customer-VPNs.

- Researching on possibility of Telecom Network Functions Virtualization

such as MRFC resource virtualization, RNC virtualization etc

Language, Tools & Technologies: C, JSON, XML, SDN, NFV, Open Stack,

Floodlight, MongoDB, RabbitMQ, ZeroMQ.

UNS Converged Presence Solutions (at Motorola Solutions Inc)

- Design, development and verification of IMS Presence based SIP features

like Outbound, Gruu, RegEvent Subscription in the UNS client SIP stack.

- Verification and Testing of High Availability (HA Cold Backup)

functionality in the UNS Registrar and Presence Server boxes

Language, Tools & Technologies: C, IMS Presence, RegEvent, GRUU, Outbound,

SUBSCRIBE/NOTIFY framework

Software System Architect, Huawei Technologies, India

Mar-2005-Sep-2012

RAI & SS7- Networks, Protocol development and Maintenance

- Design and Development of key product features such as Huawei RNC

pooling solution, MSC Dual Homing, MSC Pooling solution, MSC Traffic

Screening in SS7, SIGTRAN layers of protocols used in GSM, 3G networks

and design and implementation of the same.

- Design and Development of key IMS domain features involving SIP, SIP

B2BUA support, I-CSCF load balancing, Diameter Cx, Dx, Sh interfaces

etc.

- Understanding of VoLTE call flows and debugging.

- In all the SS7, SIGTRAN and RAI components handled Load sharing (By

Distribution) and High Availability (HA Hot Backup) functionalities for

the IMS, 3G network products.

- Performance Engineering and Proactive Performance and Scalability

Management of various components involving EXI, CCXML and SIP and

systems involving RNC, MSC, UMG, HLR

Language, Tools & Technologies: C, IMS, LTE, VoLTE, VOIP, SS7 & SIGTRAN

XML Domain Development

- Design & Development of CCXML and VXML for CTI and MRFC platform

(platform for portable SoftX/IVR Applications)

- Design and Development of High performance XML compressor based on EXI

standard, and also implemented high performing direct EXI to SAX

decoding functionality

Language, Tools & Technologies: C, C++, XML, XSD

Routing Protocol stacks development and Maintenance

- Feasibility and design understanding of OSPFv2 routing protocol, for

making use of it in OSPFv3 design and development.

- Design and development of extension features, Maintenance and bug

fixing for Routing protocols such as RIP, OSPF, BGP, MPLS, MBGP for

IPv6 VPNv4.

- Familiarity with multicast routing protocols such as PIM(Sparse mode,

dense mode), IGMP.

- Familiarity with Switching protocols such as 802.1d(STP), 802.1w(RSTP).

Language, Tools & Technologies: C, IP Routing and Switching, MPLS, VPN,

Multicast Routing

Senior Software Engineer Tala Elxsi, India

Jun-2003 - Dec-2004

- Design and development of H244 and ISO Bonding module in the H320 side

of H323-H320 IP-ISDN Gateway

- Design and development of RIPv2 routing protocol

Language, Tools & Technologies: C, VOIP, IP Routing

Project Intern e-Brahma Technologies

Jan-2002 - Dec-2002

- Designed and implemented a software based Learning Bridge and Router

with Static routing functionality

- Designed and Implemented a Network Traffic Monitoring tool in linux

using pcap library in Linux platform

Language, Tools & Technologies: C, pcap, pthread, IP Routing and Switching

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