Cover letter examples

full stack developer cover letter example (2026)

A full stack cover letter should show one feature across UI and API — not two half-careers stapled together.

When this letter is worth sending

Send when the JD wants both sides and you need to prove you shipped a surface, not only paired.

Example letter (teaching draft)

Fictional names and companies. Copy the structure, not the metrics. If you cannot discuss a line in an interview, delete it.

Dear Hiring Manager,

I am applying for the Full Stack Developer role because you want TypeScript on both sides of seat management — that is a feature I have shipped.

At Northwind I built self-serve seats: React settings, Node API, Stripe webhook. Upgrades stopped needing a ticket. Shared types cut “field missing” bugs on that path.

If the posting had been Rails-only I would lead with Rails. It is not. I am not going to pretend.

Best,
Alex Patel

What this letter does right

  • One end-to-end feature
  • Stack the JD named
  • Honesty about which layer was weaker

Common mistakes for this role

  • Two resumes in one letter
  • Expert-in-everything
  • Hiding the required framework

Pair it with the resume example

The letter should not repeat the resume. It should pick one proof and one company-specific sentence. See the matching full stack developer resume example. Generator walkthrough: AI cover letter guide.

Frequently asked questions

Title is software engineer?

Use their title. Still show both sides if they asked for full stack.

How do I keep it short?

One feature, two sentences of proof, one company-specific close.

Related cover letter examples

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