How to Write a Cover Letter Worth Reading

A cover letter has one job that a resume cannot do: give the reader a reason to read the resume. It is not a summary of the resume, and it is not a formal letter about your enthusiasm. In its best form it is three hundred words explaining why this particular role, at this particular organisation, is a fit — which is information the resume structurally cannot contain.

The four sentences that matter

Any cover letter that works can be reduced to four claims, in this order:

1. 1Who you are in one clause

   Not your job title — the thing you actually do. "I build data pipelines for logistics companies" is more informative than "I am a data engineer with five years of experience".

2. 2Why this role

   The specific thing about this job that made you apply. A requirement from the listing, a piece of the company's current work, a problem you have solved before. This is the sentence that gets the letter read.

3. 3The evidence

   One concrete example, usually from the resume but chosen deliberately because it answers the claim in the previous sentence. This is where you add a number, a constraint, or a detail the resume had no room for.

4. 4What you want

   One line. Not a declaration of lifelong passion for the industry, but a clear statement of what you are looking for and why this is the place to get it.

Openings that work, and one that does not

The first line decides whether the second one is read, so it should be the most specific sentence in the document. Compare:

I am writing to apply for the Data Engineer position listed on your careers page. Your posting emphasises dbt and warehouse cost control, and I have spent the last three years doing exactly that.

A functional opening: names the role, names the evidence that you read the posting, and is doing work in the first sentence.

I am a highly motivated and results-driven professional writing to express my keen interest in the exciting Data Engineer role at your rapidly expanding organisation.

A conventional opening: three clauses of self-assessment, no information, and it would work identically for any of the four hundred other applicants.

What goes in the middle

Two or three short paragraphs, each doing one job. The first establishes the fit. The second gives the evidence. The third handles something the resume cannot: a career change, a gap, a move between sectors, a specific reason you are leaving, or a constraint that shaped your experience.

That third paragraph is the highest-value part of the letter and the part almost everybody omits. A hiring manager reading a resume for a data engineer from a bank is forming an assumption about how you think. A cover letter is where you correct that assumption, in your own words, before an interview is even scheduled.

The closing

Short, professional and not needy. State that you would like to discuss the role, thank them, and sign. Do not ask for a specific response time, do not apologise for applying, and do not follow up three days later. If you intend to follow up at all, one message about a week later referring to the role by name is plenty.

Phrases that end a letter early

How to write one quickly

1. 1Read the job description and mark three requirements

   The three that genuinely matter. If there are only two, use two.

2. 2For each, find one piece of evidence

   From the resume or from something the resume left out. One example per requirement is enough.

3. 3Find the one specific thing about this employer

   A product, a post, a filing, a piece of news, a customer. This is what makes the letter not generic.

4. 4Write the four sentences

   Who you are, why this role, the evidence, what you want. Then stop and add a short paragraph for whatever the resume cannot explain.

5. 5Read it and delete every sentence that could go in another letter

   If it could be sent to any employer in the country, it is not doing any work.

Common questions

Frequently asked questions

Is a cover letter actually read?

It depends entirely on how the application arrived. For a referral or a speculative approach, it is the entire application. For a large portal submission, it is often skimmed or not opened, because a recruiter is filtering hundreds of identical applications. Write it anyway — the cases where it is read are the cases that matter, and it is also the only way to demonstrate written communication for many roles.

What if the application form has no text box for one?

That is meaningful information: the employer has said the cover letter is not part of their process, and attaching one unsolicited is a small irritation at best. Follow the process as specified. If you have something important to say, put it in the relevant free-text field in the form, where there is one.

Should I follow up after sending?

One message, roughly a week later, if there is no automated response. Keep it to two sentences, name the role, and add one new piece of information rather than saying "just checking in". Then stop. A second follow-up is more likely to be read as pressure than persistence.

How long should it be?

Around three hundred words. One page. If it is longer, the extra is almost certainly background you could state in an interview, and if it is much shorter it is probably a note rather than a letter. The constraint is useful precisely because it forces you to choose.

Where to go next

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