HARDWARE + FIRMWARE DESIGN --- ESP32-DA WROOM IOT BATTERY POWERED LOW POWER MAX RANGE PROJECT

Seeking a highly experienced embedded engineer (or group) with min of 10 years of solid experience in producing completed products to market. Candidate must have EXTENSIVE experience with hardware design using ESP32, as well as EXTENSIVE experience and successful background with firmware for ESP32 products and related WIFI & BT work. This project is for a battery operated device with very low QC current. It includes writing firmware for codec and cost effective board design to allow basic half duplex voice through wifi to the device. The device is battery operated and must be designed with extremely low QC to allow years of deep sleep. Candidate must have extensive experience in assembling sample SMT boards [in-house] including the small smt components. You must successfully create samples quickly in-house. It is imperative to have tools such as spectrum analyzer, scope and extensive knowledge and experience with refining the RF communication at the max range with the lowest data rate. this design will use the ESP32-WROOM-DA and you must understand the use of LR function between esp units as well as using diversity antenna feature for robust coverage. I don't respond to auto replies to this post. In order to be considered you must provide clear and detailed communication regarding your expertise and experience. I'm in the USA, so you'd be required to communicate at reasonable hours, work 40 hours or more per week. Please do not ask for money upfront. You will be paid upon delivery of good milestones