A free example opening line, and what to emphasize
A Software Engineer cover letter earns its place by adding something the CV can't — context, judgment, or a specific reason you want this particular role. Below is a strong opening line to model your own on, plus what to prioritize for this specific field.
Example opening line
Strong openingIn my last role I cut our API's average response time by 60% by rewriting a bottlenecked data layer — the kind of hands-on problem-solving I'd bring to the Backend Engineer role at [Company].
Notice the shape: a specific, numbered result, immediately connected to the role you're applying for — not a restated job title or an announcement that you're writing to apply.
What to emphasize
A specific technical result, not a list of languages — the skills section of your CV already covers the stack.
Evidence you can work across a team: code review, mentoring, or a cross-functional project, not just solo output.
Genuine interest in what the company builds — reference their product or engineering blog if you've looked at it.
What to avoid
Don't restate your whole tech stack in prose — it's already on the CV, and repeating it reads as padding.
Pair it with a matching CV: the Software Engineer CV example covers the achievement bullets and skills recruiters look for on the CV side.
Write your Software Engineer cover letter
FreeShelf's cover letter builder automatically matches the color and font of whichever CV template you choose, so the two read as a set — free, no account, nothing uploaded.