San Krishnan

vinod.kumar@calsoftlabs.com

Vinod @ 408-755-3078

 

Skills

·         Technologies – IMS, XML, IP Routing & Switching, OpenFlow, SDN, NFV

·         Language & Package Skills – C, C++, C#, .Net, Design Patterns, Open Stack, Mininet

·         Networking – UDP, TCP/IP, SCTP, RIP, EIGRP, OSPF, MPLS, OpenFlow

·         VOIP & XML – SIP, Diameter, H323, MGCP, CCXML(Platform for Portable Soft-switch Application), VXML(Platform for Portable IVR Application), EXI(Efficient Xml Interchange), SS7 & SIGTRAN

·         Multi-threaded Development, Debugging and problem locating skills

·         Performance and Scalability Analysis, Tuning and optimization

·         CPU Burst avoiding by specific optimizations and Load shredding

·         Practiced Agile, Scrum and Lean methodologies. Followed Scrumban (from Scrum and Kanban) method.

 

Patents

·                          MULTICAST MESSAGE COPYING PROCESSING METHOD - This is an invention for an XML Content router without inspecting the Contents deep inside the packet

 

Professional Experience

Senion Technical Leader                  Calsoft Labs, India                   Oct-2012 – Till Date

Open Flow Protocol Experimenting and SDN Market Research

-          Involved in the Experimenting and Simulation of Open Flow protocol. Simulated using Mininet for a simple Hub operation, Learning Switch, and a Preconfigured Switch

-          Involved in the market research of SDN, NFV and NV technologies and various SDN Controllers

-          Installed and Brought up Open Stack Orchestration Platform in a Standalone machine and verified the various features like Compute, Keystone, Image etc…,

UNS Converged Presence Solutions (at Motorola Solutions Inc)

-          Involved in the design, development and verification of IMS Presence based SIP features like Outbound, Gruu, RegEvent Subscription in the UNS client SIP stack.

-          Involved in the “UNS Presence Solutions” Requirements verification for Completeness and Traceability.

-          Involved in the verification of HA functionality in the UNS Registrar and Presence Server boxes

 

System Architect                              Huawei Technologies                              Mar-2005 – Sep-2012

RAI & SS7– Networks, Protocol development and Maintenance

-          Contributed to the design of Huawei RNC pooling solution(aka RNC Node Virtualization) and prototyping it

-          Contributed to the research and design phase of OSPFv2 routing protocol development

-          Contributed to the Design and Development of key Telecom Market Requirements like Dual Homing, MSC Pool(aka MSC Node Virtualization), MSC Traffic Screening in SS7, SIGTRAN layers of protocols used in GSM, 3G and LTE networks and key IMS domain Market requirements involving SIP and Diameter (involving SIP B2BUA support, I-CSCF load balancing, Diameter Cx, Dx, Sh interfaces)

-          Performance Engineering and Proactive Performance and Scalability Management of various components involving EXI, CCXML and SIP and systems involving RNC, MSC, UMG, HLR

-          Contributed to the Design and Development of High performance XML compressor based on EXI standard, and also implemented high performing direct EXI to SAX decoding functionality

 

Routing Protocol stack pre-research

-          Contributed to the research and design phase of OSPFv2 routing protocol development

 

XML Domain Development

-          Contributed to the Design & Development of CCXML (platform for portable SoftX Application)

-          Contributed to the Design and Development of VXML (an platform for portable IVR Applications)

-          Contributed to the Design and Development of High performance XML compressor based on EXI standard, and also implemented high performing direct EXI to SAX decoding functionality

             

Senior Software Engineer                               Tala Elxsi                                                    Jun-2003 – Dec-2004

-          Contributed  to the design and development of H244 and ISO Bonding module in the H320 side of H323-H320 IP-ISDN Gateway

-          Contributed to the design and development of RIPv2 routing protocol

 

Project Intern                                                e-Brahma Technologies                  Jan-2002 – Dec-2002

-          Designed and implemented a software based Bridge and Router

-          Designed and Implemented a Network Traffic Monitoring tool in linux using tcpdump utility in Linux platform

 

Education

BE (CSE)             PSG College of Technology,  Bharathiar University, India       CGPA – 9.13              2003

Diploma (EEE)  Thiyagarajar Polytechnic,  Periyar University, India.                97.75%                      2000

 

Project Summary

 

S.No.	Project Title & Description	Organization	Duration	Protocol/ Technology	Language
1	Open Flow Protocol Experimenting and SDN Market Research	CalsoftLabs	Aug-2013 to till date	OpenFlow SDN/NFV	C
2	UNS Presence solution	Motorola	Oct 2012 to July-2013	SIP, IMS	C, C++
3	RAI – Networks, Protocol development and Maintenance	Huawei	Aug 2008 to Dec 2009 & Jan 2010 to Sep 2012	SIP, H323, MGCP	C
4	EXI Component – Efficient XML Interchange	Huawei	Dec 2007 to July 2008	XML Compression	C
5	CCXML Interpreter – Call Control XML Interpreter	Huawei	May 2006 to June 2007	Platform for Portable Soft-switch Application	C++
6	OSPF protocol pre-research project	Huawei	Nov 2005 to April 2006	OSPF	C
7	SS7 – Networks, Protocol development and Maintenance	Huawei	Jan 2010 to Sep 2012	SCCP, MTP3, M3UA, SUA, TCAP	C
8	H323-H320 Gateway (Media and Signal)	Tata Elxsi	Dec 2003 to Dec 2004	H320, H323	C, C++
9	RIP – Routing Protocol Development	Tata Elxsi	July 2003 to Dec 2003	RIP	C

 

 

References: Furnished upon request