Creating a Lead List: Companies Hiring for Tech Roles in Automation and Streamlining

Hey team, thanks for all the detailed responses so far! Hoping for some guidance in creating a lead list. I want to create a lead list of companies that use tech and/or are hiring for roles that help automate, streamline, or reduce operational costs. I have tried using keywords from job titles/tech via GPT but those don't seem to create a large enough list What would be a recommended flow for this? Using both Apollo and Clay for this. Really appreciate the help!