Thank-you email after an interview
Send within 24 hours, to each interviewer you have an email for. Reference one thing that person said.
Subject: Thank you, [Interviewer first name]
Hi [Interviewer first name], Thank you for the time today. Your point about [specific thing they said, e.g. moving billing off the monolith before the Q3 launch] stuck with me. It is the kind of problem I solved at [Current or past company], where [one-line result, e.g. we cut invoice failures by 40% in two quarters]. I would be glad to go deeper on how I would approach it at [Company]. I am excited about the [Role] role and look forward to the next step. Best, [Your name] [Phone] | [LinkedIn URL]