Software Engineer cover letter example

Hiring managers skim a software engineer cover letter for one thing: proof you can do this job, in their words. Below is a short letter that does exactly that. Replace the bracketed parts and the results with yours.

Dear Hiring Manager,

I'm applying for the Software Engineer role at [Company]. My background in one line: backend engineer with 6 years building high-traffic APIs in Go and Python.

Two results from my last roles that match what you're asking for:
- Reduced p99 API latency from 480 ms to 290 ms by adding a read-through cache and rewriting 3 hot queries.
- Led migration of a monolith to 12 services over 9 months with zero customer-facing downtime.

I also cut cloud spend by $18k/year by right-sizing Kubernetes workloads and removing idle environments. Day to day I work with Go, Python, PostgreSQL and Kubernetes, which your posting lists among the core requirements.

I'd welcome a short call to walk through how I'd approach [a priority from the job ad] in the first 90 days.

Best regards,
Alex Kim

Why this letter works

It is short. Under 200 words: it gets read to the end.
Results, not duties. Both proof points carry a number a recruiter can repeat to the team.
It mirrors the posting. Go, Python, PostgreSQL, Kubernetes are the words software engineer ads use; swap in the exact terms from yours.
It asks for a next step tied to their priorities, not a generic "hope to hear from you".

Mistakes that get software engineer cover letters skipped

Repeating the resume line by line instead of picking the two results that fit this job.
"I am a hard-working team player": claims without evidence are ignored.
One letter for every application. The ATS and the recruiter both notice.

Write yours for a specific job

Paste the job ad and your resume: Cover Letter Forge writes a letter around the requirements of that posting. Generate a tailored cover letter

The account is free. Tailored letters come with the Complete Candidature Kit: €12 once for 5 letters, no subscription (or any paid plan).

No resume yet? Start from the software engineer resume example and check it with the software engineer resume keywords list, or run the free ATS Match Score against the ad.

Related cover letter examples

All cover letter examples · CV Forge — free resume generator