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Cover letter example

Software engineer cover letter example

For an engineering role, the letter shows how you think. A hiring manager wants to see one technical problem you solved, the options you considered and why you chose one.

Add a line on the company's product or sector to show the application is targeted.

Cover letter example

Replace the parts in brackets with your own details.

Subject: Application for the Software Engineer position (Java backend), [Company]

Dear [Recruiter's name],

I am applying for the backend software engineer position at [Company]. Your move to an event-driven architecture, described in your engineering blog, is close to a project I led over the last two years.

At [Previous Company], I was in charge of the reconciliation service of a payments platform, written in Java with Spring Boot. Our main problem was overnight batch jobs that sometimes ran into the morning. I proposed to process events as they arrived through Kafka, with a fallback batch for consistency checks. The migration took several months and was done service by service, without interrupting the business.

I care about what happens after deployment. I set up the team's dashboards and alerts, and I organise our post-incident reviews so that each problem leads to a concrete fix rather than a blame discussion.

I graduated from [Engineering School] with a specialisation in distributed systems. I would enjoy comparing notes on your Kafka setup during a technical interview.

Yours sincerely,[First Name Last Name][Phone][Email]

What to highlight

  • Your technical domain and stack
  • A design or reliability problem you handled
  • Your role in the team: owner, lead, contributor
  • Interest in the sector or product
  • Your training and any domain-specific standards

Mistakes to avoid

  • Describing technologies without the problem they solved.
  • Exaggerating your role in a team project.
  • Writing the same letter for an ESN and a product company.
  • Forgetting to adapt to the company's sector constraints.

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Frequently asked questions

Is a cover letter expected by ESNs?

ESNs often recruit quickly and rely on the résumé and a call. A short letter or message still helps, especially to say which type of assignments and clients you are looking for. ESN recruiters appreciate candidates who are clear about their mobility and preferred sectors.

Should I mention open-source work?

Yes, if it is relevant and you can explain your contribution. One line with the project, what you contributed and a link is enough. Hiring managers sometimes read the code, so choose contributions that reflect your current level.

How do I address a security clearance requirement?

Defence and aerospace employers may require a security clearance obtained after hiring, and some positions are restricted by nationality. If the ad mentions it, state your nationality and any previous clearance in a neutral way, so the employer can check eligibility early.

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