pH Instrument Circuit Design Review -- 2

As a start-up in Texas, we're on the hunt for a seasoned professional to scrutinize our handheld pH instrument's PCB schematic. Your expertise should not only help identify potential errors but also improve our circuit engineering and firmware design for manufacturing and IoT integration.

Ideal Skills:
- Mechatronics (Mechanical Engineering and Electronics)
- Electronic Products Development
- Circuit Design
- Firmware
- Pre-manufacturing Processes

Please provide a portfolio including:
- Market products you've worked on
- Links to these products
- Contact persons associated with these projects

We place the most emphasis on circuit engineering. Your role will be pivotal in refining our product for market readiness.

Best regards,

Zak