responsibilities： • develop acoustic system design concepts to achieve product performance requirements • define, build, and characterize physical prototypes of acoustic systems • collaborate with mechanical, electrical and software engineering team members to design, build, and test audio product lines • define, specify, and validate production test equipment and processes • in charge of the definition and evaluation of audio functions (voicecall, voip call, aov, recording, music player..audio processing in general) • execute needed acceptance tests and certifications • in charge of na carrier (t-mobile, at&t, spirent, verizion), eu carrier (vodafone, dtag, orange) acoustic lab entry test and issue debug • work directly with engineering teams to tune and optimize system audio performance, including voice call, voip call, recording, music player, voice wake up and so on. • in charge of odm vendor acoustic/audio performance management. requirements： 1. strong knowledge in standards (etsi, tia, fcc, iut, 3gpp) including audio measurements standards 2. strong knowledge in carrier (t-mobile, at&t, spirent, verizion, vodafone, dtag, orange) including audio measurements standards 3. fluent in acoustic measurement system acqua from head acoustics 4. strong experience in qualcomm audio processing algorithm and familiar how to tune it. 5. strong knowledge of hardware development methodologies and in particular electronic design 6. strong experience in audio and acoustics. this includes not only electronic aspects but also related software fields (codec, compression…), 7. strong experience in audio components, including transductors, 8. mechanical constraints knowledge 9. good knowledge in digital and analog electronic design 10. good knowledge of digital electronic and transmission test equipment. 11. english proficiency in reading, writing and speaking nice to have: 1. general knowledge in enterprise market 2. project management experience