Lead Cellular Audio Certification Engineer

Syntronic R&D USA; Sunnyvale (CA); On-site; USD 110,000 - 170,000; Full time

Job summary

Syntronic is seeking an experienced Cellular Audio Telephony Certification Engineer to lead audio quality validation for mobile devices. You will use HEAD Acoustics systems and Rohde & Schwarz simulators to validate LTE/VoLTE/VoNR call scenarios and ensure compliance with 3GPP specs and carrier requirements.

You will work across hardware and software teams to develop automated test scripts, analyze results, and generate certification-ready documentation for carriers worldwide.

Qualifications

• Experience in audio certification testing for cellular devices.
• Familiarity with codec negotiation, AEC, noise suppression is a plus.
• Hands-on with test systems and lab equipment in telecom QA.

Responsibilities

• Plan, execute, and analyze end-to-end audio telephony tests for LTE, VoLTE, VoNR, VoWiFi and legacy voice technologies.
• Perform acoustic measurements (RLR, SLR, STMR, jitter, speech quality) and ensure regulatory compliance.
• Develop and maintain test reports, waivers, and certification matrices for carriers and labs.
• Serve as audio SME in design reviews and lab readiness, mentoring juniors.

Job description

Syntronic is seeking an experienced Cellular Audio Telephony Certification Engineer to lead audio quality validation for mobile devices. You will use HEAD Acoustics systems and Rohde & Schwarz simulators to validate LTE/VoLTE/VoNR call scenarios and ensure compliance with 3GPP specs and carrier requirements.

You will work across hardware and software teams to develop automated test scripts, analyze results, and generate certification-ready documentation for carriers worldwide.