There is routine admin around hiring that may be worth simplifying: acknowledging applications, asking a few relevant questions and arranging interviews.
Keep the first questions practical
Ask about the qualifications, experience and availability the role actually needs. A form or message can collect the information; a person's answer is not independent verification of a licence or certification.
Make scheduling easier
An interview booking link could reduce phone tag if it offers realistic times and a contact for questions. Give applicants a way to explain something the form does not cover.
Keep people making the decisions
Review applications consistently and protect applicant information. Use automation for organising and reminders rather than assuming a tool can identify the best technician or make fair hiring decisions on its own.
Which part takes the most time in your hiring process: sorting information, connecting with applicants or arranging interviews?