4G/5G Testing Engineer with Modem & IMS

PDDN is a provider of end-to-end software solutions and IT consulting Services and software development Company. is headquartered in Fremont, California with clients across the Silicon Valley and other Information technology Hubs in different states. With integrated solutions, software development, technical services, training and staffing support, we help customers achieve their technology goals allowing them to focus on their business.

Job Title: Junior 4G/5G Telephony Test Engineer

Location: California & San Diego, California

Employment Type: Contract (C2C/W2)

Responsibilities:

• Test & debug Android telephony features (voice, data, messaging, eSIM, IMS, RCS, 5G).
• Analyze logs (Android, RIL, modem) & debug issues.
• Understand 4G/5G protocols (LTE, 5G NR, VoLTE, Wi-Fi Calling).
• Develop & execute test plans.
• Collaborate with cross-functional teams.
• Generate weekly reports.

Requirements:

• Experience in Android telephony testing & debugging.
• Strong understanding of Android architecture.
• Expertise in log analysis.
• Knowledge of 4G/5G protocols.
• Familiarity with Android carrier configs.
• Excellent communication & problem-solving skills.

Preferred:

• Experience with automation frameworks (e.g., Python, Robot Framework).
• Knowledge of IMS & RCS technologies.
• Experience with eSIM technologies.

All your information will be kept confidential according to EEO guidelines.