Embedded Electronics Technician / ESP32 Prototype Builder

Project Overview I am developing two original hardware products and am looking for an experienced electronics technician or embedded systems engineer to assist with prototype assembly and testing. The electronic components have already been selected. I need someone experienced with ESP32 development, soldering, prototyping, and wiring to help assemble and validate working prototypes. Project 1 – Birdie Prototype assembly for a smart golf grip. Current components include: ESP32-C3 (Beetle) BNO085/BNO080 IMU OLED Display LiPo Battery USB-C charging Haptic motor Force sensors (later revision) Flexible PCB (future) Initial goal: Build a clean, working prototype with reliable wiring and proper soldering. Project 2 – Control Module Build an electronics control module for an interactive electronic dart game. Components include: ESP32 Phoenix connector Status LEDs Perfboard Waterproof enclosure USB programming Power distribution The BCM will eventually communicate with: Electronic dartboard LCD display Mobile application Wi-Fi/Bluetooth The first version is simply a clean working controller. Required Skills Must have experience with: ESP32 ESP32-C3 Arduino IDE Embedded electronics Through-hole soldering Perfboard construction Header installation Breadboard prototyping Debugging wiring I2C devices SPI devices OLED displays IMU sensors USB power LiPo batteries Multimeter troubleshooting Bonus experience: Golf electronics Wearables IoT devices Bluetooth Low Energy Product prototyping Small enclosure design 3D printing What I Need For each project I'd like assistance with: Installing headers Soldering components Wiring modules Verifying pin assignments Testing power Testing communication Troubleshooting Organizing wiring neatly Documenting final wiring If everything goes well, I'd like all wiring documented so I can duplicate future units myself. Deliverables For each prototype: ✔ Clean solder joints ✔ Proper wire management ✔ Tested operation ✔ Pin assignment documentation ✔ Wiring diagram ✔ Photos of completed build ✔ Short explanation of the design Successful candidates will receive additional work involving: PCB design Flexible PCB development Golf electronics Embedded firmware Electronic gaming hardware Product refinement Manufacturing preparation This is the beginning of multiple hardware products rather than a one-time repair job. Ideal Candidate I'm looking for someone who enjoys building prototypes and solving problems—not someone who simply follows instructions. The ideal candidate has built ESP32-based products before and can recommend improvements while maintaining a clean, professional build. Communication is important. I'm looking for someone who explains why they're making recommendations rather than simply assembling components. Screening Questions Please answer the following: How many ESP32-based prototypes have you built? Have you worked with ESP32-C3 or Beetle boards? Have you soldered headers and built perfboard prototypes? Have you worked with OLED displays over I2C? Have you worked with BNO080/BNO085 IMUs? Can you document wiring diagrams for future production? Approximately how many hours do you estimate to complete both prototypes? Please provide photos or links to similar embedded hardware projects you've completed.