Job hunting always involves some writing: a cover letter, a self-introduction, and a follow-up email after the interview. Many people have a decent résumé but stall on this “supporting text” — it comes out dry, generic, and unmatched to the role, so applications vanish into the void.
This is exactly AI’s strength: reorganising and rephrasing your real experience to fit a specific role. The key is not to let it invent things, but to feed it both the job description and your own background, and have it do “matching and polishing” rather than “making things up.” The result is targeted and still genuinely yours.
When to use it
When a role needs a cover letter, an online application has a “self-introduction” field, or you want to send a tasteful thank-you after an interview — but can’t make it sound both professional and on-target.
How to do it
- Copy the full job description (JD) and gather your own background (résumé or a few bullet points)
- Open DeepSeek or Doubao, paste the prompt below, and fill in both the JD and your experience
- Get a first version, then refine: “stronger opening hook”, “this part oversells — make it grounded”, “keep it under 250 words”
- Before finalising, read it through, verify the facts and figures, and rewrite in your own voice
Copy-paste prompt
You are a senior recruiter and career coach. I’m applying for a role and need help with a【cover letter / self-introduction / post-interview follow-up】. Below are the job description and my real background. Write strictly from my experience — don’t invent anything I don’t have; pick the most critical requirements and answer them with my experience, professional and sincere not hyped, within【word count】. JD:【paste JD】. My background:【paste résumé or bullet points】.
Worked examples
You get：Instead of empty flattery, it answers the JD’s requirements point by point with your experience — a recruiter can tell at a glance you actually read the role.
You get：A tasteful ~100-word email with a subject line — polite, and a chance to reinforce the impression. Many candidates skip this step; sending it sets you apart.
Level up
- Spoken version: add “rewrite as a natural, easy-to-memorise 1-minute spoken self-intro” for practising your interview opener
- Faster mass applying: lock your background section and only swap the JD per role for a targeted letter in minutes
- English roles: for foreign companies or English JDs, add “write a version in professional English”; English tools like ChatGPT phrase it more idiomatically, but need a VPN to access
Common mistakes
- Letting AI invent experience — the slicker it sounds, the more it falls apart in the interview; only let it organise and polish what’s real
- One letter for every job — without swapping the JD it’s a generic template recruiters spot instantly; rewrite against each new JD
- Sending it as-is — AI leans formal; read it through and shift it to your own voice to lose the “template” smell
FAQ
Will recruiters tell the letter was AI-written?
My background is ordinary — can AI still make it look good?
Pro tip：Save your background as one fixed block of text; from then on just swap the JD each time, and AI quickly produces a targeted letter and self-intro — a big speed-up.