Test Engineer Qa

Bhabani Shankar Sahoo

Senior Network Test Engineer / Architect

Cell: 631-***-****

linkedin.com/in/bhabani-s-38a47b174

Email:***********@*****.***

APTITUDE

Well versed with Software development testing process – usage of Test management tool, Report generation, Bug tracking & working with development team & field support team for issue resolution

Experience in the field of Wireless Protocol & Application Testing (VOIP, GSM, GPRS, 3G/UMTS, LTE, VOLTE, VOWIFI, Carrier-Aggregation, eSIM, RTT, FirstNet, Curiosity IoT, M2M, DSDS, DCDS, MVNO, CBRS,5G-NSA/ SA/millimeter wave)

Field Testing on UMTS/VOIP/LTE/VoLTE/5G Field Test, GCF testing, UMTS/LTE Conformance tests in Brazil, US, South Korea, CANADA, for AT&T, TMO, VZW, Sprint, VIVO, KT, BELL, TELUS, and Rogers Operators

Working knowledge of 3GPP, CTIA, ETSI, OMA, Zigbee Alliance, and other regulations and standards relating to consumer products preferred

Experience and strong knowledge in 802.11 a/b/g/n/ac/ax and Bluetooth, android telephony, RCS wireless multimedia WMM, wireless security protocol WEP, WPA, WPA2 (AES, TKIP)

Knowledge of testing consumer products from laboratory / manufacturing / QA / QC perspective

Experience conformance Protocol test systems from Rohde&Schwarz, Anritsu, Keysight, Spirent

Experience in test and measure equipment such as network and spectrum analyzers and power meter

Experience in analysis/logging tools: QXDM, PST, Perl, Wireshark, Shannon DM, etc

Thorough understanding of Core Network architecture, as describes in 3GPP standards (Rel 15 &Rel 16, Rel 17)

and technology from previous generations.

Knowledge and/or documented work experience in the following core functions: SMF / UPF / AMF / NRF / NSSF / PCF / UDM / AUSF / MME, SAEGW, SPGW, or ePDG, and IMS components

Hands-on experience in designing, implementing, integrating, and deploying solutions in the EPC (Evolved Packet Core).

Experience in working on testing tools used for testing/validation of the core network solutions

Understanding 3GPP Core Network (EPC, 5GC) and IMS end to end call flow scenarios, such as - VoNR, ViNR, inter-carrier roaming (n14, N26), EPS fallback, SMS, MMS, E911

Extensive understanding of software systems/services running in the virtualized environments (Kubernetes, AWS) and Core Network Functions (NF’s – VNF/CNF)

Experience in scripting and developing test automation

Understanding of Core Network performance KPI’s/metrics – such as, latency/throughput considerations and issues from core cloud deployment to Data Center locations

Understanding and experiences with virtualized networks, orchestration, and automation across a comprehensive network architecture

Working knowledge of IP networking and cloud/MANO technologies (Kubernetes)

E911 FCC Rules, regulations, compliance, and accuracy requirements

Manage and coordinate PSAP testing as needed

Tracked the latest FCC requirements

Worked on Mobile Automation Framework for Stability and Sanity testing

Good understanding of java design patters and open-source frameworks (selenium, cucumber automation tools)

Familiarity with continuous integration (Jenkins), application monitoring (Crashlytics and fabric.io), mocking tools (Appium and Apiary), build tool development and enhancements, using unit testing and cucumber tests for functional tests

Robot automation scripts development and test validation using python as programming language

Worked in implementing the DevOps in source code management, Build automation, Continuous integration and continuous deployment and environment management

Configure jobs and pipelines using Jenkins.

Involved in version controlling using GIT

TECHNICAL SKILLS

Network: GSM, GPRS, UMTS, LTE, VOIP, IMS, LTE Advance, 5G-NR/SA/millimeter, NB-IOT, ORAN

Protocol: NAS, RLC, RRC, PDCP, RLC, MAC, SIP, RTCP, HTTP, RTP, TCP, GTP, MAP, SCCP, ISUP, SIP

Testing Tools Used: Anritsu MD8470A,MT8000A,MD8475B,Agilent 8960,Nomad, Datum App, Anite SAT, R&S CMW 500, UXM call box7515B, WIRESHARK, QXDM,PCAT,XCAL,ELT, QC, Shannon DM,Clear Quest, DDMS,PST, Test Central, JIRA, Polarion, Aplabs, Analyzer, Agilent Battery test tool, Bugzilla, LAB SAT,MTK Flashing tool, Catcher tool, PTT Dispatcher tool, CAT tool,DB meter,T911 GUI tool, SIPp tool, Test link, IMEI writing tool, DC toolGit, GitHub, Jenkins, Ansible, Docker, Atom, Cloud – AWS

Software: Android SDK, Python 2.7, Eclipse,

Operating Systems: Windows, Android, MS DOS, UNIX, Apple macOS

Scripting Languages: Python, JavaScript, and HTML

Methodologies: Black Box, White Box, Agile, Six Sigma

Data Bases: Oracle, SQL Server, My SQL

EDUCATION

Qualification Category Qualification Subject

SSC BSE (84%) Other (2003)

XII Standard CHSE (66%) Science (2005)

Bachelor’s in technology B. TECH (70%) Electronics & Telecommunication (2010)

PROFESSIONAL EXPERIENCE

Company: KASTECH SOLUTIONS LLC (USA)

Project: Functional Network Test Engineer(Wireless) Jan 2022 to Till Date

Clients: DISH Wireless

Team Size: people

Description:

This project involves the security, design, performance of cloud networks, and the integration of all 5G services and devices

Review the current Core/O-RAN/Cloud platform offerings and create high-level end to end system architecture that is optimal and cost-effective, based on the key guidelines from the Technology strategy

Take into account architecture recommendations from Core/RAN/ORAN Cloud experts, in creating high-level optimal system architecture

Preparation of physical layout plan for proper 5G system site infrastructure, and support systems

Creation of rack layouts and BOM for 5G Lab

Provide technical guidance and inputs to the lab domain experts, lab setup and deployment teams, and help deploy the end-to-end system solution

Provide technical guidance to establish end to end testing process to pertinent Testing team members/experts

Architect the end to end system solution that integrates in the overall CICD/DevOps pipelines

Work with vendors/partners, in understanding and influencing their roadmaps to align with DISH strategies and requirements

Develop processes and automation tools, to manage lifecycle of lab instances (physical + private VMWare cloud + public AWS cloud). The lifecycle includes lab instance creation, configuration, activation, de-activation, deletion. Lab instances are provided to various testing teams (both internal and external), based on testing requirements

Role & Contribution

Review vendor/DISH documents such as Product Requirement Document (PRD), Network Design Requirements (NDR), Lab Engineering Plan (LEP) workbook and product documents provided by vendors

Establish concrete DISH functional tests with reference to PRD for individual products, NDR for each network elements such as AMF/UPF, PCRF, IMS, CU/DU/RU, Proxy, DNS, Load balancer, Firewall, Routers etc. Please note functional testing includes verifying all features of each network element, and leverages traffic generators such as Keysight, Spirent products and other tools such as Wireshark and other node specific tools.

Review functional requirements that are developed for each product/node, with key DISH stakeholders that include key product owners and operation POC’s.

Work with vendors in consolidating and documenting all functional tests performed either by vendors in their own labs and/or DISH provided Lab instances

Create Test cases per finalized TOL’s – 1) Pre-requisites/pre-conditions, 2) test steps/execution, 3) expected behavior

Provide oversight on the testing efforts, update JIRA, and monitor progress towards the resolution of issues/defects identified in functional testing efforts

Assign and oversee the daily tasks of technical personnel while ensuring all team members are actively working toward established milestones

Hold regular team meetings to determine the Lab Build/setup progress and address any questions or challenges regarding projects

Protocol Carrier Acceptance Toolset is part of Keysight’s 5G Network Emulation Solution portfolio. It provides an efficient platform for mobile device evaluation based on the test requirements of major mobile operators, who validate the test supported by the 5G Protocol carrier acceptance Toolset solution as part of their device acceptance programs.

Toolset flexibly addresses a wide range of test scenarios in sub-6GHz (FR1) and mmWave (FR2) frequencies, for both non-standalone (NSA) and standalone (SA) mode: signaling, performance and application testing including Wi-Fi, LBS and thermal.

Worked with cross functional teams to establish E911 and Text-to-911 roadmap and set guidelines

Assist with CALEA, Traceback, & STIR/SHAKEN issues

Communicate proactively with all involved personnel to provide encouragement, identify problems, create solutions, and implement efficiency improvements.

Update and maintain all documentations related to the delivery of Lab Build/Setup projects.

Collaborate with third parties, suppliers/vendors to pre-integrate and pre-test Telco network cloud solutions, to develop use cases in the lab environment

Facilitate to build and demonstrate client POC’s/Demos

Provide inputs to the lab architecture/setup and manage lab setup/testing vendors

Integrate both physical and cloud (AWS) Lab zones/instances with CI/CD and DevOps infrastructure for NF onboarding and release management

Experience with L2, L3 protocols and networking concepts/implementations, such as overlay/underlay networks, VLAN’s, Multi-Case, ACL, FW, Tunnels, Bridges, IPV4, IPV6, and others

Working understanding of data center protocols including: CIFS, NFS FC, FCoE, and iSCSI storage protocols; DNS, DHCP, PXE, LDAP, TCP/IP, and basic networking concepts around switching and routing, and key networking technology components, such as HTTP, HTTPS, DNS, SRV6, TCP/IP, ICMP and load balancing

Understand the goals of the technology product / platform and incorporate into the planning for technical backlogs, providing prioritization and sequencing to maximize business value

Provide prioritized stories from the product backlog to the agile teams and participate in team planning meetings

Work to continually improve test automation strategy and coordinate with team members to implement and incorporate automated tests into CI/CD pipeline.

Performed automation tests, test bed setup, execution, and maintenance of Wi-Fi certification test suites for 802.11 (a/b/g/n/ac) products.

Experience with test simulators such as Key sight, ANITE, R&S CMW 500, ANRITSU & tools such as STT, STB, QXDM, QPST, QMI, Wireshark, Flash tool and AT commands tools like Putty, HyperTerminal

Company: Telaverge Communications (USA)

Project: Senior Test Engineer June 2021 to Jan2022

Clients: Zebra Technologies

Team Size: 6 people

Description: This project involves testing of Android smart phones, Tablets and Windows OS products with 5G/ LTE/LTE-A/IMS support and feature with PTT support. 5G/LTE Interoperability and field testing are performed to compare the product behavior of a device-under-test against a qualified infrastructure or equipment and to test the operation in a real-life network. DevOps engineering responsible for synthesizing functional and technical requirements from the product and engineering teams into prioritized user stories, approving features that are in alignment with agreed upon acceptance criteria.

Role & Contribution

Experience in testing UE side protocols for various call features in QUALCOMM, Intel, Sierra wireless chipset

Executed AT&T 5G/LTE AVDFT AVL testing, T-Mobile F4L testing, USCC F4L testing and other carrier test plans.

Involved in LTE/UMTS/GSM Conformance Testing based on 3GPP Specifications which involves both Protocol and RF/Hardware testing

Analyze, writes and elaborate user stories based on required functionality as well as technical capabilities (works with both the Product Owner and Delivery teams)

Primary interface between delivery team and a specific business unit/product

Identifies needs of the users/customers and recommends alternative methods for meeting those needs

Primarily engages during execution and release phases

Understand the goals of the technology product / platform and incorporate into the planning for technical backlogs, providing prioritization and sequencing to maximize business value

Provide prioritized stories from the product backlog to the agile teams and participate in team planning meetings

Work to continually improve test automation strategy and coordinate with team members to implement and incorporate automated tests into CI/CD pipeline.

Performed automation tests, test bed setup, execution, and maintenance of Wi-Fi certification test suites for 802.11 (a/b/g/n/ac) products.

Experience with test simulators such as Key sight, ANITE, R&S CMW 500, ANRITSU & tools such as STT, STB, QXDM, QPST, QMI, Wireshark, Flash tool and AT commands tools like Putty, HyperTerminal

Company: AIRCOM International (USA)

Project: Field Test Engineer Nov 2020 to June 2021

Clients (OEMs): Google, Samsung, TCL, One Plus, Wingtech, Yogi Maxx, Wiko, CAT, Telit

Team Size: 12 people

Description: This project involves testing of Android smart phones, Tablets and Windows OS products with 5G FR1-FR2/ LTE/LTE-A/IMS support and feature with E-PTT support. 5G FR1/FR2 /LTE Interoperability and field testing are performed to compare the product behavior of a device-under-test against a qualified infrastructure or equipment and to test the operation in a real-life network

Role & Contribution

Executed AT&T 5G/LTE AVDFT AVL testing, T-Mobile F4L testing, USCC F4L testing and other carrier test plans.

Plan and execute 5G/LTE field testing for multiple OEMs on different OS for T-Mobile, AT&T, Verizon and US Cellular using different Spirent test tools.

Execute 5G Functional testing using Spirent LM tool and log analysis using LMA tool.

Tested devices with MTK chipsets and use ELT tool for debugging.

Worked on AT&T and T-Mobile test plans along with Verizon DFIT. Testing included different Carrier Test Plans for AGPS, Voice Quality, Data Throughput, ADVFT, T-Mobile CAT, Carrier Aggregation, and various other User Acceptance Tests.

This testing included use of Spirent’s test tools such as Nomad and Datum and Qualcomm’s QXDM, QCAT, Snapper etc.

Understanding of UDP/TCP/IP, IMS, VoWifi MBMS, RCS, Verizon Data Retry, Mesh Network, Carrier Aggregation, 4x4 MIMO

Performed Network IoT testing in Device Certification LAB using Callbox CMW500, Anite, Anritsu

Involved in LTE/UMTS/GSM Conformance Testing based on 3GPP Specifications which involves both Protocol and RF/Hardware testing.

Experience with test simulators such as Key sight, ANITE, R&S CMW 500, ANRITSU & tools such as STT, STB, QXDM, QPST, QMI, Wireshark, Shannon DM tool, Flash tool and AT commands tools like Putty, HyperTerminal

Company: Larsen & Toubro Technology Services Limited (USA)

Project: System & Field Test Verification on Enterprise Mobile Devices and Tablets July 2016 to Nov 2020

Clients: Zebra Technologies, Microsoft FT, Quanta computer inc, Reliance Communications, LLC

Role: Project Lead

Team Size: 10 people

Description: This project involves testing of Android smart phones, Tablets and Windows OS products with 5G/ LTE/LTE-A/IMS support and feature with PTT support. Field testing of predefined test cases to ensure the stability of the UE stack during the extended period of data transfer, handover, various System configurations, multiple data sessions, network selection/attach/detach behavior.

Role & Contribution

Experience in LTE domain in both UE and Network side in US different operators (LTE, IMS, Volte & IMS, RTT, VOWIFI, FirstNet, M2M, android telephony and RCS)

Experience in testing UE side protocols for various call features in QUALCOMM, Intel, Sierra wireless chipset

Handset product test experience wireless technologies spanning 700MHz to 6GHz; including, but not limited to: GSM, LTE, CDMA, GPS, Wi-Fi, 802.11n/ac, NFC/HF-RFID and Bluetooth

Good knowledge in preparation of test setup and execution of LTE, IMS and 3CC Band Carrier Aggregation with different Operators

Strong experience in using the ADB shell Android Debug Bridge for installing Applications and extracting logs from the Mobile devices

Creating an automation strategy for test suites that involves subtask like automation suite design and architecture, creating structure for configuration files, high level Keyword definitions, creating test files, resource files and variable files structure

Automate test cases that uses Live environment, Agilent Box, UXM box or CMW box with help of robot framework and python language

Understanding of Physical/MAC layers and Call Processing concepts in LTE/VoLTE/5G

Experience with test simulators such as Key sight, ANITE, R&S CMW 500, ANRITSU & tools such as STT, STB, QXDM, QPST, QMI, Wireshark, Flash tool and AT commands tools like Putty, HyperTerminal

Company: Larsen & Toubro Technology Services Limited (INDIA)

Project Name: System & Field Test Verification on Enterprise Mobile Devices Jan 2015 to Jun 2016

Client: Motorola Solutions, Zebra Technologies

Size: 10 people

Role: Test Engineer

Description: Mobile Field Testing is a part of the testing process where the device functionality is being checked and verified in the live network. Verifying handover, IRAT, Out of Service recovery time, CS and PS calls, throughput KPIs for single and dual SIM devices.

Role & Contribution:

Hands-on experience on testing LTE Cat 4 / LTE advanced features, carrier aggregation, MIMO strategies for throughput testing, VoLTE

Multi-RAB, FTP application, RRC State Transition, Call performance, Audio Quality, SMS, MMS, OOS, Tethering, Ping, Supplementary Services, Multiparty Calls, E-Mail

Setup, configure, test and validation RF scan, TIS (Total Isotropic Sensitivity), TRP (Total Radiated Power) and work on Lab Equipment’s

Tested 802.11 standards, including a/b/g/n physical layer, MAC, QoS, Wi-Fi security, authentication (personal/enterprise), etc.

Debugged and validated in lab environment with test equipment such as oscilloscope, Logic analyzer and others

Test cases modification and writing test cases as per the requirement

Handover testing and troubleshooting, Downlink and Uplink throughput testing

Perform layer 3 analysis and call trace to find the cause of drop calls, access failure, and handover failure.

Analysis of Field and Radio application related test cases on weekly basis to increase the execution efficiency of the test cycle

Company: Sonim Technologies INDIA PVT.LTD

Project Name: System & Field Test Verification on Rugged Android Phones Jan 2012 to Dec 2014

Team Size: 10

Role: QA Engineer

Description: Testing on UMTS/VOIP/LTE Field Test, GCF testing, in BELL, TELUS, Orange, ATT Operators

Responsibilities:

Flashing the Mobile Devices, Log collection & preliminary Log Analyzing using QXDM tool.

Pre-PTCRB testing using Anritsu tool & AGILENT 8960.

Extensive involvement in sanity and regression testing of the system on different operators different builds

Understanding of Events and Handovers such as X2 handover, S1 Handover, LTE to 3G Handover, LTE to 3G cell Reselection and Call flows of GSM, UMTS and LTE technologies

Involved in Basic Sanity testing of native Apps, Full Round Testing, Regression Testing, Ad-hoc Testing

Involved in trace analysis and locating the problem in protocol level

Drive testing and static testing on Rel 9 chipset

Hands-on experience on testing LTE / LTE advanced features, carrier aggregation, MIMO strategies for throughput testing, VoLTE

PoC Client provides Push-to-talk (PTT) over Cellular (PoC) capabilities based on 3GPP as well as OMA PoC and PAG specifications

Contact this candidate