PCB Layout Design & Optimization (USB + RS485 | EasyEDA)

We are seeking an experienced PCB designer to review, correct, and optimize an existing PCB design.

Project Scope:
* PCB includes ESP32 (or MCU), USB interface, and RS485 communication
* Existing schematic is already completed in EasyEDA

Tasks:
* Review and validate schematic (identify gaps/issues)
* Optimize power design and signal integrity.
* Perform professional PCB layout design.
* Ensure EMI/EMC considerations and stable communication (USB + RS485)
* Prepare production-ready files (Gerber, BOM, Pick & Place)

Requirements:
* Must work in EasyEDA (collaborative mode)
* Strong experience with mixed-signal PCB, communication interfaces, and power optimization.
* Ability to identify design flaws and improve reliability.

Selection Criteria:
* Proven expertise and past similar work.
* Design quality and optimization capability.
* Communication and delivery time.
* Competitive pricing (lowest bidder will be selected among qualified candidates)

Deliverables:
* Final PCB layout (EasyEDA)
* Brief design notes on improvements made