Nagabhushana Rao Devineni

Irving,TX-75038,USA

OBJECTIVE

Mobile: +1-469-600-5757

  nagabhushana.devineni@gmail.com

I wanted to be an expert in VoLTE call flow debugging and solve customer issues, Deploy

VoLTE(IMS) in Cloud infrastructure. To be Expert in SDN technologies.

PROFESSIONAL SKILLS

• Expertise in VoLTE testing and debugging.

• Expertise in Integration HSS-FE, OneNDS, CSCF, HSSc, F5 load balancer, DRA,

DNS, and enum server on ATCA, HP ProLiant BL460c Gen8,SunSparc.

• Experience in Testing IMS Application servers.

• Expertise in configuration of

LAN,ACL,STP,DHCP,RIP,EIGR,OSPF,HSRP,VRRP and GLBP

• Expertise in VoLTE Lab IPv4/IPv6 network planning.

• Expertise in configuration of IPA server, NIC teaming/bonding, HTTP over SSL,.

LDAP and Kerberos authentication, SAMBA , NFS, MariaDB and Linux firewall

(iptables).

• Proficiency in testing and debugging IMS call flows.

• Hands on experience in testing and debugging on SIP, Diameter using wireshark.

• Expert in debugging Network and Redhat Linux and Sun Solaris system

administration related issues.

• Expertise in configuration of Linux volume management, RAID and ISCSI.

• Experience in deployment of openstack and Vmware virtualization

• Good understanding in VmWare NSX platform.

• Experience in mininet project to simulate SDN

IT Certifications

• CCNA (R&S) Certified.

• Redhat Certified system Administration Certified.

Awards

• Nokia Appreciation award for IPV6 implementation in IMS LAB.

Experience Summery

Period

01/24/2013 - Present

11 Years

Organization

Mantra Telecom

10/10/2007-01/18/2013 Nokia

06/06/2005-0/30/2007 NMS communications

Role

Telecom engineer

IMS Technical support engineer

Software engineer

PROFESSIONAL EXPERIENCE

Customer SLA/Care support for IMS/LTE core network

Customer: Verizon Wireless

[Jan 2013-Present]

• Debugging VzW VoLTE issues.

• Responsible in resolving HSS, CSCF, DNS, Enum server issues

• Working and debug hardware issue.

• Resolve issue related to CSCF and HSS network issues.

• Debug using Diameter SIP call flows using wireshark .

• Working on Linux operating system issues.

• Simulate the faults in production in the LAB and propose the fixes.

• Writing the MOP for procedure and configuration and HW changes on Vz Issues.

Technical engineer with Nokia

[March 2011-2013]

• Integrate the IMS elements and network elements from scratch (HSS, CSCF,

oneNDS, ACME SBC, DRA, DNS, Enum, F5 load balancer, Cisco and netgear

switches and Routers, ATCA, Sparc, HP ProLiant servers, MRV console servers.

• System Integration of ACME SBC/BGF Solutions

• IPv6 Network planning.

• Test IMS calls after integration.

• Handled complete IMS LAB.

R&D SyVe with Nokia

[Oct2007-Feb2011]

• IMS Voice call continuity and break-in , break-out calls and I-BCF testing.

• Test the interworking call flow between CSCF, MSC,HLR ,MGCF,I-BCF,BGCF.

• Test the Voice call continuity and I-BCF call flow.

• Debug the Issues related to CSCF,MCF, I-BCF and HSS.

• Test the upgrade paths of HSS, CSCF, HSSd-FE across releases.

NMS communications

NMS SIP client and presence server testing

• SIP, DIAMETER protocol testing.

• Presence application server testing.

• IMS call testing using Wireshark.

EDUCATION DETIALS

• M.Tech (Computer applications) from N.I.T.K (Formerly REC) with 7.1 CGPA

• M.SC (Mathematics) from CENTRAL UNIVERSITY of HYDERABAD passed

with 71% marks

• GATE-2002 ALL IINDIA RANK-43.

• 1st rank in NITK M.Tech entrance exam.

[June 2005 – Oct2007