A Backend Developer cover letter should connect your achievements to what the listing asks for. Here is what to emphasise, the skills that matter, and a free tool to check your CV before you send it.
List both. Recruiters and ATS systems often search for specific frameworks like Express.js or Spring Boot alongside the core language, so naming both increases keyword matches and shows practical experience.
Use technical metrics you can measure directly, such as reduced latency, increased throughput, decreased error rates, or improved test coverage. These numbers demonstrate impact even without revenue data.
Yes, especially if you lack extensive professional experience or want to showcase specific skills like API design or database architecture. Include a link to the repository and briefly describe the technical challenge solved.
It should be specific enough to name real technologies, tools, and architectures you have used, but avoid excessive jargon that obscures your actual contributions. Balance technical precision with clear, results-oriented language.
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