Senior System Design Engineer
Current
Sep 2021 - Present
AeroLeads people directory · profile
Zohaib I. Email & Phone Number
Senior Systems Design Engineer @ T-Mobile USA| 5G | Roaming | Cloud | IP Networking |
at
T-Mobile
LinkedIn matched
✓ Verified Jun 2026
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Profile completeness 86%
Current company
Role
Senior Systems Design Engineer @ T-Mobile USA| 5G | Roaming | Cloud | IP Networking |
Location
United States, United States, United States
Who is Zohaib I.? Overview
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Quick answer
Zohaib I. is listed as Senior Systems Design Engineer @ T-Mobile USA| 5G | Roaming | Cloud | IP Networking | at T-Mobile, based in United States, United States, United States. AeroLeads shows a matched LinkedIn profile for Zohaib I..
Zohaib I. previously worked as Senior System Design Engineer at T-Mobile and System Design Engineer at T-Mobile.
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Email format at T-Mobile
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T-Mobile
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Profile bio
About Zohaib I.
Telecom professional experienced in devices and core networks. Always willing to learn new technologies. Programming and a cloud enthusiast. I am an individual contributor and a team player. I am looking forward to being an inspirational technical leader. Certifications will be uploaded soon!I started my career as an RF intern and transitioned to cellular (telephony and modem) device validation at Motorola, Sony, and Google with a focus on RAN signaling. With the advancements in 3GPP specifications, I wanted to be a part of the core networks team to better understand the overall architecture. I had the opportunity to work for AT&T on an end-to-end VoLTE project which landed me an exciting core roaming engineer role at T-Mobile!!
Listed skills include Rf, 3Gpp, Drive Test, Cdma, and 29 others.
Current workplace
Zohaib I.'s current company
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9 roles
Zohaib I. work experience
A career timeline built from the work history available for this profile.
System Design Engineer
Dec 2018 - Sep 2021
Core Network Engineer (Ims)
Performed end-to-end VoLTE/WiFi Calling prepaid integration and service validation (call flows) of the AT&T network involvingRAN (E/U-TRAN), EPC (MME, HSS, SGW, PGW, PCRF, PAS, MIND, SGSN, MSC) and IMS (P/I/S-CSCF, SBC, MRF, MMTel, CPM) nodes for Real Time Services using the Ericsson (OCS) billing system. Executed tests on Samsung and LG handsets.
Apr 2018 - Dec 2018
Devices Engineer (Pixel)
Worked on UE LTE Call Flow testing (manual/automation) on build releases for AT&T, Verizon, Sprint, T-Mobile. Provided KPIs for UE test failures by analyzing Application and modem layer logs using QXDM, QCAT, and Wireshark PCAP logs. Worked on Anritsu 8475A for CA, CSFB, SRVCC, Volte, VoWiFi E911, CMAS, ETWS, Iperf. Understand the Telephony and Modem layer.
Sep 2015 - Mar 2018
Devices Engineer (Xperia)
Onsite interface at Soft card Lab in Texas for NFC based payment application. Performed IMS, RCS, RF Conformance and Signaling testing on the Spirent Test System, and e911 Testing on Agilent 8960 and Anritsu 8475 Test Simulators. Tested software builds on NFC and NFC payment application, CTIA compliance using Android Device Manager, FOTA using VZW internal.
Mar 2014 - Sep 2015
Devices Engineer (Droid)
Data throughput, voice call (stationary/mobility), and feature performance field testing on Windows-Nokia tablets on Verizon & AT&T network using JDSU, Datum tool (FTP, HTTP and UDP servers), and QXDM.
Aug 2013 - Feb 2014
Lte Field Engineer
Completed AT&T network cluster drives for handover, IRAT, reselection, data throughput UL/DL, CSFB, cell activation, customer complaints, swapping sectors using TEMS 14.0 software.
Mar 2013 - Aug 2013
Lte Field Engineer
Performed RF Drive Testing for IRAT and Inter/Intra BSC/RNC/TAC handover testing, call performance testing using Streets and Maps plus TEMS pocket tool for in-building walk tests.
Sep 2012 - Feb 2013
Field Engineer (Intern)
Worked on the TEMS 11 software for data collection and optimization from the cluster drives to check Handoffs and Throughput Degradation using Samsung phones.
May 2011 - Aug 2011
FAQ
Frequently asked questions about Zohaib I.
Quick answers generated from the profile data available on this page.
What company does Zohaib I. work for?
Zohaib I. works for T-Mobile.
What is Zohaib I.'s role at T-Mobile?
Zohaib I. is listed as Senior Systems Design Engineer @ T-Mobile USA| 5G | Roaming | Cloud | IP Networking | at T-Mobile.
Where is Zohaib I. based?
Zohaib I. is based in United States, United States, United States while working with T-Mobile.
What companies has Zohaib I. worked for?
Zohaib I. has worked for T-Mobile, At&T Labs, Inc., Google, Sony Mobile Communications, and Motorola Mobility (A Lenovo Company).
How can I contact Zohaib I.?
You can use AeroLeads to view verified contact signals for Zohaib I. at T-Mobile, including work email, phone, and LinkedIn data when available.
What skills is Zohaib I. known for?
Zohaib I. is listed with skills including Rf, 3Gpp, Drive Test, Cdma, Wcdma, Troubleshooting, Engineering, and 3G.
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