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# Protocol Engineer

- **Company:** Prodapt Corp
- **Location:** San Jose, CA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** LTE (Telecommunication), Data Analysis, Computer Engineering, Modems, Software Debugging, Python (Programming Language), Location-Based Services, Log Analysis, Strategies of Testing, Wireshark, Scripting, Information Technology
- **Published:** September 14, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=c122783d44287e5a

## About the Role

* Bachelors degree in Computer science, Computer Engineering, Electrical Engineering, Electronics & Communication engineering or related field.
 * 10+ years of telecom industry experience with 5G/LTE/Modem development or validation.
 * 5+ years of hands-on experience in 5G Protocol Verification or closely related Modem/Signaling subsystem verification.
 * Strong proficiency in 3GPP Standards (Rel 15/16) and IMS Signaling for block-level and/or system-level verification.
 * Experience with industry-standard protocol tools (QXDM, QCAT, Wireshark, ADB) and coverage-driven certification flows.
 * Proficiency with scripting languages such as Python for automation, regression management, and data analysis.
 * Demonstrated strength in modem debugging, root-cause analysis, and driving verification closure for E911/Location Services.
 * Excellent communication and interpersonal skills, with the ability to work effectively in a collaborative, cross-functional environment.

## Description

Prodapt is seeking a highly skilled 5G Protocol & Certification Engineer in Fremont, CA to focus on the signaling and functional verification of cutting-edge mobile devices, ensuring they meet stringent carrier and emergency service requirements. In this role, you will develop and execute protocol test plans, perform deep-dive modem log analysis, and collaborate closely with OEM and network teams to drive certification closure on complex 5G features.
Responsibilities:
*

 + Develop and execute comprehensive protocol verification plans for 5G/LTE designs, including defining test strategies for E911, RTT, and LPPe/PIDF-LO protocols.
 + Design, develop, and maintain test environments using Keysight, Rohde & Schwarz, or Spirent simulators to verify 5G functionality, mobility, and IMS features.
 + Create complex test scenarios and test cases to achieve comprehensive Carrier Certification (AT&T, Verizon, T-Mobile) and 3GPP standards compliance.
 + Analyze modem logs and regression results, debug complex signaling issues using QXDM, QCAT, and Wireshark, identify root causes, and drive bug resolution.
 + Work closely with cross-functional teams, including Modem SW, Architecture, and Carrier Labs, to align verification efforts with project milestones.
 + Maintain accurate and up-to-date documentation for verification plans, test cases, and results to support traceability and final device approval.
*