Shreyas is a senior software engineer with over 8 years of experience in IT, support, development, and programming. He has extensive experience with technologies like LAMP, Asterisk, Kamailio, OpenSIP, and Cisco CUCM. He is skilled in programming languages like Perl and Shell/Bash and operating systems like Centos, Fedora, Redhat, and Debian.

1. Shreyas
45/19
Edappally-Cochin
E-mail: yasiray@gmail.com
Phone: 9544678732
EDUCATIONAL
QUALIFICATION
B.E in Electronics and
Communication Engineering
July2004 — April2008
Nandha Engineering College-Erode Anna University-Chennai
Ceritfication:CCNA
PROFESSIONAL
SUMMARY
Technically Sophisticated Professional with 8+ Years of IT Experience in Support,Development
&Programming.
Offering good experience in technology area of Unified Communications, IP Telephony & Infra.
Extensive experience in LAMP(Linux,Apache,MySQL,Perl)Technologies.
Extensive experience Unified Communications, Cloud & Enterprise Telephony Solutions, Contact
Centre
Software Dialers (Predictive/Progressive/Manual).
In depth knowledge of IP-PBX , Media Gateways – (FXO, FXS),VOICE GATEWAYS, VOIP ,DAHDI,PRI
In depth knowledge of Development and Integrations exposure – Shell/Bash scripts, perl scripts.
In Depth Knowledge of Centos Customization to build our own ISO,kickstart config files etc..
Successfully Implemented OpenVZ and XenServer and XenDesktop for Virtualization.
Expert in IVR development ,Implementation and Support as Team lead.
Knowledge of Software development life cycle skills; ability to use standard tools for development on
Centos
Working knowledge of VPN & integrations with Dialer, CTI & SIP Trunks.
Strong analytical and communication skills ,capability to learn quickly.
TECHNICAL
SKILLS
·Programming Languages:Perl,Shell/Bash
·Databases : Mysql
·Operating Systems : Centos,Fedora,Redhat,Debian wheezy,Windows 8
·Protocols :SIP,TCP/IP
·Telecommunication: Asterisk,Kamailio,OpenSIP,CISCO CUCM
·Virtualization Tools : XenServer and XenDesktop
·S/W Management Tools:SVN,VSS,
·WebServer:Apache Tomcat
·Telecom Devices:CISCO,Avaya,Samsung,Grandstream,Yealink,Cisco Linksys,Matrix,AllCatel
WORK
EXPERIENCE
Divox International Inc October-2015 — Present
Senior Software Engineer
Jobs&Responsibilities
Implementation of Open Source IP PBX software system based Different Client's Architecture
Develop and deliver Telephony and VoIP related platforms and systems.
Implementation of Kamailio and FreePBX for Load balancing and SIP Call Routing
Building Customized IVR Based Inbound-Outbound Call Routing in Client Side
Muhammad Yasir
Muhammad Yasir 1

2. Newtok technologies Pvt Ltd Aug 2013 — Sep 2015
Czentrix(Towards Vision
Technologies Pvt Ltd)
Feb 2011 — July 2013
Newtok Technologies Pvt Ltd
Cochin
August 2009 — Feb 2011
Responsible For Supporting IP-PBX Installed clients at any Point of Time
Managing office infra and providing working environment to team for Product development of
Frendy Support Team
Supporting Business teams in Pre-Sales - Proposals, Solution Engineering, POC for prospects.
Software Engineer
Jobs&Responsibilities
Leadingteam of4,responsiblefor100% uptimeforBellnokpbxSystem–
AUnifiedCommunication&Telephony SoftwareSuitedevelopedbyNewtok.
Implementationand TestingofFreePBX,Elastixand Other Open
Sourcesoftware'sfordevelopmentofnew product
Researchand DevelopmentofEmbeddedDevicespossibilitiestoimplementOpen SourceUC.
CustomizationofCentosforbuildinganewIP-PBXISO.
Responsibleforpackagemanagementand buildingnewRPMsofpbx-modules
Responsibleforcompetence&skillstransferamongteam
members&escalationSPOCforcustomersupport team.
Managingofficeinfraand providingworkingenvironmenttoteam forProductdevelopment.
Software Developer
Jobs&Responsibilities
ResponsibleforperlbasedIVRdevelopment.
Configuration,Implementation,and TroubleshootingofCallServers&AsteriskTelephonysystems.
Interactingwithclientstounderstandtheirrequirementforsetup/upgrading“Czentrix”.
Part ofR&Dteam and taken part indevelopingIPPBXsystem.
HandledL3issuesescalatedtodevelopmentteam.
Handlinginternalcommunications,clienttickets/issues&assistancetoonsiteresources.
LinuxAdministration,Implementation& Configurations(RedHat& CentOS)
Handledofficenetwork forprovidingdevelopmentenvironment.
Software Engineer Trainee & Technical Support
Jobs&Responsibilities
ServeastheprimarysystemsadministratorforLinuxserversand services.
Monitorsystemperformanceand utilization
Install,configure,and documentnewserversand applications
Managefile serverutilization(shared folders,quotas,etc.) Managebackupprocessand performdata
recoveriesasneeded.
WorkwiththeSystemsTeam indevelopingSystemAdministrationPoliciesand
SystemsTeam long-rangeplanning.
Design,develop,document,troubleshoot,and maintainprogramsforsystemsand applicationsin
supportforthecompanybusinessand clientbusiness.
Workwiththestafftoprovidedocumentationand handoutsfortheprogramsand
servicesavailablethrough IT.
Provideconsultingservicestothedeveloperstohelpnewideas
forinnovativeprojectsinvolvingtechnology-basedproductivitytools,including
recommendationsofappropriatehardwareand software.
INDUSTRY
EXPOSURE
Frendy-Dialer-Support Center
Builded More than 50 Seat IP-Extension GCC and USA and INDIA for Frendy Dialer Support.A call
Routing
Structure for Managing all support calls. DesignedaCallRoutingStructureforHDDialerIP
communicationDialerwithKamailio,Asteriskand Softswitches.Builde a scriptformanagingRTPPROXY
and kamailiowithasterisk.
Organization Divox Communications Pvt Ltd
Technology Linux,perl,Asterisk,Apache,Mysql,Kamailio,ItelDialer,Voip gateways
Design and Implement Ucaas(Unified Communication As A Service)
Muhammad Yasir 2

3. Designing IP-PBX Call Routing, Based on Client Infrastructure Architecure,With IVR,SIP
Traffic,Departmens,Locations
for All Inbound and Outbound Calls..Designed and Developed the call structure Implemented and End to
End aspects.
Providing support at 24*7 Level.
Organization Divox Communications Pvt Ltd
Technology Linux,perl,Asterisk,Apache,Mysql,Kamailio,PRI
HostedIVRforClick2CallandDirectCall
CreatedaHostedIVRforDirectcallpatchingand
click2callfromacallcenteragenttocustomer.Directcallpatch will
connectthecustomercalledfromtollfreetoanagentwhileanswerd,connected,hangupstageivrwillsendcustomer
informationtohostedServerthrough API.
Customer call comes to UC-Box ivr Started taken callerid,did,session id Sending API with primary
data.After Response. UC Dialer will take dealer numbers.5-I will dail first dealer number to connect
with customer if dail status is failed ,will take second one, based on the failed numbers keep on
DB.Dialer working based on API response.Call Will patched to dealer then Push API based on Dial
Status ANSWER,BUSY,CHANNUNOT AVAIL
Organization Divox Communications Pvt Ltd
Technology Linux,perl,Asterisk,Apache,Mysql,Kamailio,Voip gateways
Bellnok CommunicationSystem
BellnokIP-PBXisacompletetelephonysystemwithallPBXfunctionalities.TheVOIPsolutionismanagedbyan
Asteriskbasedsystemthat providestelephonecallsoveradata network. Bothcallsand data are
handledonsingle network. Thetraditionalenterprisephonesystemcan
bereplacedwiththisIP-PBXorthiscan beintegratedwiththe
existingphonesystemtoworktogether.Thesolutionallowstoconnecttheinternalextensionuserstoanexternal
network likePSTN
withTDMorVOIPtelephonynetworks.Thesystemisinteroperablewithmostofthethirdparty
gateways,telephonyequipmentand phones.
Organization Newtok TechnologiesCochin
Technology Linux,perl,Asterisk,Apache,Mysql,shell,php
FreePBX,Elastiximplementations
FreePBXand Elastixare open source,web-basedPBXsolution.ImplementedonCentosMachineand
Writtendialplans and customizedAPIusingAGI&AGMforinteractingAsteriskthrough 3rdParty
ApplicationsforSOHO Businesses.
Organization Newtok TechnologiesCochin
Technology Linux,perl,Asterisk,Apache,Mysql,shell
EmbeddedIP-PBXIntegration
AstLinuxisaCommunicationsand Network Applianceopen
sourcesoftwaredistribution.Unifiedcommunications includingvoice,presenceand
messaging,providedbyAsterisk(SIP,DAHDI)and Prosody(XMPP).AstLinux's
frameworkallowsintegratorsand developerstodeploysolutions.ItsDeployedinsingleboard
computersokerisand createdmodulesforcallrouting,Buildacompactabledeviceforcommunication.
Organization Newtok TechnologiesCochin
Technology LinuxBusybox,perl,Asterisk,Sokeris,Astlinux
MiniPBX-Integration
Implementedasteriskforraspberyypideviceand alsobuildcustomizedagiforincomingand
outgoingcallroutingin debainplatform.
Organization Newtok TechnologiesCochin
Technology Debian,Raspbx,Perl,RaspberryPi
ISOBuilder and RPMBuilder
BuildourownBellnokcommunication systemISObyCustomizingacentosiso.Addednewip-pbx-modulesand
Muhammad Yasir 3

4. scripts.
Buildedcustomizedrpmpackages,preparedscriptforinstallationfromyumrepository.BuildanewISOimagecontain
allasterisk,dahdi,LAMPpackges,namedasBellnok_pbx_x86.iso
BuildedanRPMfromsourcecode and Bellnok-PBXModulesand configurationfilesacceptabletoall
architectures.
Organization Newtok TechnologiesCochin
Technology Perl,shell,Asterisk
Czentrix-IP-PBXmodules
DevelopmentTeam Member inCzentrix-CallCenterSolutions,mainlytaken part
Czentrix-ippbxsystem.Developed modulesforcallroutinginCzentrix-ippbxtoczentrixCallcentersolution.
Modulesforhandlingincomingcallshandler, outgoingcallcontroller,ivrhandler..
Organization TowardsvisionTechnologiesGurgaon
Technology Perl,MySql,shell,awk,sed
Czentrix-CallCenterModules
DevelopmentTeam Member inCzentrix-CallCenterSolutions,mainlytaken part
Czetrix-callcentersystem.Developed
modulesforCzentrixCallcentersolution.Channel-healthcheking,serverstatus,eventhandler,cdrreporter,Dialera
Listener
Organization TowardsvisionTechnologiesGurgaon
Technology Perl,MySql,Asterisk
EscalationMatrix
Inorder tobetter servethecustomeritisimportanttoserveallhisqueries,complaintsor
suggestionsontime.Inorder toaccomplishthisescalationmatrixprovidesadvancecallrouting
rulesbasedroutingtoreducemultiplenumberofcallsfromthecustomer.
Organization TowardsvisionTechnologiesGurgaon
Technology Perl,MySql,shell.Asterisk
Voice Commerce UC
Designed Call Routing Arch for Different clients based on IVR.To Coordinate with their internal UC and
Clients
·Itzcash Prepaid Cash cards and Online Payment Solution
·Astroyogi online indian astrology
·Snapdeal online shopping
·Hashbabies online shopping
·Tradus online shopping
·Eko Tele Payment and Support
·NIIT Class Room
·Indepay netwok for Prepaid cards
·TechProcess Payment Services electronic payments system for 24*7 offer.
·SMC india online
·National Stock Exchange
Organization TowardsvisionTechnologiesGurgaon
REFERENCESS Divox Communication Pvt Ltd:Jhon Mathew(Head R&D)
Newtok technologies Pvt Ltd:Samad(PM)
Czentrix:Amit Sharma(PM)
Muhammad Yasir 4