Protocol Engineer

5G Protocol & Certification Engineer

Prodapt is the largest and fastest-growing specialized player in the Connectedness industry, recognized by Gartner as a Large, Telecom-Native, Regional IT Service Provider across North America, Europe and Latin America. With its singular focus on the domain, Prodapt has built deep expertise in the most transformative technologies that connect our world. Prodapt is a trusted partner for enterprises across all layers of the Connectedness vertical. Prodapt designs, configures, and operates solutions across their digital landscape, network infrastructure, and business operations – and craft experiences that delight their customers. Today, Prodapt's clients connect 1.1 billion people and 5.4 billion devices, and are among the largest telecom, media, and internet firms in the world. Prodapt works with Google, Amazon, Verizon, Vodafone, Liberty Global, Liberty Latin America, Claro, Lumen, Windstream, Rogers, Telus, KPN, Virgin Media, British Telecom, Deutsche Telekom, Adtran, Samsung, and many more. A "Great Place To Work® Certified™" company, Prodapt employs over 6,000 technology and domain experts in 30+ countries across North America, Latin America, Europe, Africa, and Asia. Prodapt is part of the 130-year-old business conglomerate The Jhaver Group, which employs over 30,000 people across 80+ locations globally. 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.

Requirements

• 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.