Ashok Kumar Senapati

Plano, Texas
214-797-6025

ashok.senapati@live.com

 

Objective: Seeking for the position of Sr. Software Engineer

 

Summary:

•   15 years of experience in software design, development and testing in telecom domains i.e. VoIP, 3G, WiMAX, 4G/LTE

    and IMS using C/C++

•   7 years of experience in architecture and design

•   5+ years of experience in Cavium Octeon NPU (Network Processor Unit) platform

•   Development platforms – X86 Linux, Network Processor Unit (i.e. Cavium Octeon NPU), Windows (Win32), C/C++

•   Experience in ATCA platform with Linux Kernel 2.6, Cavium Octeon processor with Simple Executive OS in the

    data plane and Debian Linux OS in the control plane

•   Experience in PCI-X, PCIe, AMC (GbE, 10GbE) hardwares having Cavium Octeon NPU CN38xx and CN56xx processors

•  Experience in L2 Ethernet switching protocol (i.e. VLAN)

•   In-depth knowledge of writing Test cases and Test Procedures and also converting composite system Requirements into

     comprehensive Test Cases

•   Experience in Functional, Regression, Integration, Performance and User Acceptance testing

•   Experience in validation of software applications and products

•   Experience in filing and tracking defects and also creating System test reports

•   Working experience with performing load/stress tests

•   Experience with Agile/Scrum methodologies

•   Exposure to large set of telecom protocols, self managed, goal oriented individual, proven ability to work in unison

     with intra team and inter teams, excellent communication skill, faster problem solving acumen, down to earth approach.

 

Technical Skill Sets:

•   C, C++, Java, GDB, CVS/SVN, UML (Rational Rose), Quality Center (QC)

•   Intel x86, Cavium Octeon NPU (i.e. CN38xx, CN56xx) MIPS64 platforms in cPCI and ATCA environments

•   Linux, Telecom Networking, TCP/IP, Socket Programming, Kernel Programming (Device driver, Net Filter Hook)

•   DSP Processing using NMS CG 6500, Commetrex EFT (FAX Terminal) 

•   Audio and Video Codecs – G711, G729, G726, G723, iLBC, AMR, H.261, H.263, H.264, MPEG4

•   Protocols – SS7, H.323, SIP, RTP/RTCP, RTSP, T.38, PoC, BCD encoding/decoding, ASN.1 PER/BER

     encoding/decoding, SCCP, RANAP, GMM, RRC, ISUP, MAP, CAMEL, GTP, WiMAX (R3, R6, GRE,

    ASN-Ctrl, Radius, EAP), LTE (S1-U, S11-C), SCTP, eHRPD, IPsec.

 

Accomplishments:

• Designed and implemented VoIP, LTE(SCTP) and eHRPD Analyzer product using C/C++

• Designed LTE simulation product (EAST) – Signaling and Data(generating/processing data in line rates in terms of Gbps)

   and implemented using C++ and C

• Designed WiMAX simulation product (EAST) – R6, R3 interfaces, implemented various protocols stacks and integrated

   all the components to simulate multiple BSs and ASN-GWs using C++ and also implemented GRE protocol using C in

   kernel space

• Designed and implemented multi-threaded Voice Quality Measurement (PESQ) Application using C++

• Designed and implemented RTP application to simulate bearer traffic in the VoIP network, implemented in kernel space

  using C

• Integrated third party hardwares and software with RTP solution to support various features (such as DSP processing,

  Fax Over IP, various audio and video codecs) using C++

•Designed and implemented various protocol stacks for VoIP, 2G, 3G, WiMAX and LTE using C++

•Designed and implemented the integration of RTP and PoC(Push-to-talk over Cellular) using C++

•Designed and implemented ASN.1 encoder/decoder, binary message encoder/decoder using C++

•Designed and implemented reusable C++ encoder/decoder for ASN.1 and Binary messages and used them graphically

  through JNI (Java Native Interface)

•Designed and implemented TCP/IP client/server modules for different application protocols using C++

 

 

 

 

Employment:

 

1) Staff Software Engineer (Level-IV), Spirent Communications, Plano, Texas                 August 2013 - Present

 

• Working as Software Designer/Developer for VoIP, 2G, 3G, LTE (SCTP), IMS (IPsec)

   protocols in network element simulation/emulation product using C++ and C in Intel X86 Linux

   and Cavium Octeon NPU platforms.

 

• Subject Matter Expert for SCTP and IPsec.

 

 

2) Software Design Engineer (Level -III), Tektronix Communications, Plano, Texas 

                                                                                                                                                 March 2011 – August 2013

 

• Worked as Embedded Software Designer/Developer for VoIP, LTE (SCTP), IMS (IPsec)

    protocols in network monitoring product using C++ and C in Intel X86 Linux and Cavium Octeon NPU platforms.

 

• Subject Matter Expert for SCTP and IPsec.

 

3) Sr. Software Engineer (Team Lead), EXFO America Inc. (formerly NetHawk Corp.), Richardson, Texas

                                                                                                                                                November 2002 – March 2011

EXFO is among the leading providers of next-generation test and service assurance solutions for wireless and wireline network

operators and equipment manufacturers in the global telecommunications industry. The company offers innovative solutions for the development, installation, management and maintenance of converged, IP fixed and mobile networks-from the core to the edge.

Key technologies supported include 3G, 4G/LTE and IMS. EXFO America Inc. is the leader of providing telecom test solutions

through simulator (EAST) and analyzer (M5) products.  As Sr. Software Engineer, I had been participating in various roles

such as Software Designer/Developer, Component Leader, Component Stream Leader, Team Leader.

 

• (January 2008 – January 2011) Worked as Team Lead to provide line rate data generation supporting various protocols

such as RTP, PRBS, GTP, GRE for various technologies such as LTE, Core Network, IMS, WiMAX using C++ and C.

My key focus was to write detailed requirements, do the sub-system design, review the module design and implementation.

I was providing key prototype implementation for proof of fact and guide the team into the right direction. Also implemented

some modulewithin the permitted time frame. I was participating in debugging critical issues and come up with quick and

efficient solution. I was writing and reviewing user documents. Used ATCA platform with Linux Kernel 2.6, Cavium Octeon

processor with Simple Executive OS in the data plane and Debian Linux OS in the control plane. Also used PCI-X, PCIe,

AMC (GbE, 10GbE) hardwares having Cavium Octeon CN38xx and CN56xx processors.

 

• (January 2007 – December 2007) Worked on WiMAX as Component Stream Leader. Participated in providing detailed

requirements, design of the product and various components. Supported WiMAX R6 and R3 interfaces and simulated

network elements using C++. Implemented GRE module using C in the kernel space. Developed EAP stack emulator

as a prototype and integrated with the EAST core using C++. Implemented ASN-Ctrl, EAP, Radius, GRE protocols

using C++ and C.

 

• (July 2004 – December 2006) Worked as Software Designer/Developer and ComponentLeader. Designed RTP stack for host

and kernel space (for performance acceleration) using C++ and C. Integrated NMS CG6500 and Commetrex T.38 stack for

DSP processing for DTMF detection and Fax Over IP respectively using C++. Added PTT feature in to RTP and developed

custom RTP solution for different customers using C++. Designed and implemented multi-threaded server for voice quality

measurement using C++.

 

• (November 2002 – June 2004) Developed various modules using C++  in EAST simulation product such as

Encoder/Decoder for Binary and ASN.1 protocols, worked on VoIP simulation. Developed the data structure in C++

and used JNI to show the ASN.1 and binary messages graphically in tree view using Java. Designed and implemented

various transport layers.

 

4) Sr. Software Engineer (Project Lead), NetHawk Networks India Pvt. Ltd.

                          (formerly Alliance Computer Telephony India Pvt. Ltd.), India January 1999 – November 2002

 

        •  Worked on the development of EAST (Environment for Automated System Testing) product using Java, C and C++

         on the Windows and Linux platforms.

      •  Worked on the telecom domains ASN.1, SS7, ISDN, VoIP and 2G.

•  Developed various GUI interfaces and data structures for EAST (Environment for Automated System testing) product

          using Java.

•  Designed and implemented ASN.1 encoder/decoder, BCD encoder/decoder using Java.

• Designed and implemented reusable C++ encoder/decoder for ASN.1 and BCD and also used them graphically

         through JNI.

      •  Managed team of 20 software engineers.

 

                     

                  Education:

                               • M. Phil. (Postgraduate Research Degree) in Mathematics, Utkal University, India, 1997 – 1998

• M. Sc. (Master of Science) in Mathematics, Utkal University, India, 1995 – 1997

     • B. Sc. (Bachelor of Science, Mathematics (Major)), Utkal University, India, 1992 – 1995

 

                    Honors and Awards:

                              • LTE (i.e. Long Term Evolution Networks) Certification Training from Solubiq Inc., Dallas, Texas, USA

                      • Published thesis (dissertation) paper during Postgraduate Research Degree

                      • Secured rank-1 award in Postgraduate Research Degree from Utkal University, India

                      • Secured rank-4 award in Master of Science from Utkal University, India