ESP32 Circuit Development for Voltage Measurement

I am looking for an expert in circuitry development, with proficient understanding and practical experience with ESP32 microcontroller, to create a circuit capable of measuring line-to-line voltage. This circuit should be crafted with a primary focus on voltage accuracy, especially in the range of 440vac. Key outputs needed from this project are numerical data formats.

Your role will involve:
- Designing and developing a circuit that can accurately measure line-to-line voltages without a neutral wire
- Ensuring that the circuit can measure 440vac voltage accurately
- Configuring the circuit to output data in a numerical format

Ideal skills for the job:
- Extensive experience in circuit design
- Proficiency with the ESP32 microcontroller
- Demonstrable history of projects focused on voltage measurement or related field
- Strong understanding of electrical accuracy requirements
- Experience in creating numerical output data format from hardware circuits.

I look forward to working with a professional who can deliver quality while adhering to safety standards.