One of the biggest mistakes job seekers can make is to write long-winded cover letters detailing their whole career story. Let's be realistic: no matter how fascinating your background may be, tech hiring managers aren't going to read all of that.
Whoever is in charge of weeding through the hundreds of responses to an IT job posting won't have time to examine each paragraph of the cover letter to find out whether you're someone they'd like to call in for an interview. Burying your main selling points – your achievements and qualifications – in the middle of a large block of text makes it more likely that your application will be passed over.
One way to make your cover letter stand out is to highlight your most important information with bullet points. This makes your letter more visually appealing, and also makes it easier for someone to scan through and pick out the details they are most interested in reading – the stuff you want them to see.
For more information, check out my tips on how to incorporate bullet points into your cover letter. Below are a few other helpful articles you'll want to read through before you get down to writing: