The Importance of a Cover Letter

So, you’ve seen a job you really like, you’ve written a strong CV that’s tailored for the role, and now comes that dreaded moment where you are asked to “provide a brief cover letter outlining your experience and suitability for the role”. How on earth do you go about condensing a strong academic record, hands-on expertise in a particular technology field or relevant ‘soft-skills’ into just half a side of A4? And is it important anyway? Isn’t a strong CV enough to already bag you dozens of interviews anyway? Well … not always.

Adding value to your application

Think about it from the hiring manager’s (HM) point of view for a moment. Yes, your CV is strong and lists some relevant experience. Unfortunately, so do the next three in the in-tray. The HM skims through the CVs, but they’re already running late for a team meeting on the other side of the building, half their mind is distracted by that upcoming funding application that is due in three days, and they’re preparing a crucial presentation to update a client on a major project they have in the pipeline. A concise cover letter is one of the best ways to ensure that in the few minutes a HM has to make a decision, it is YOUR details that stand out and precipitate an interview.

That’s great! But what do I actually write?

So, this is where it gets a little complicated. At the end of the day, a cover letter is your personal document and should be a reflection of your character, as well as your experience and motivations, so it’s difficult to give any formal template to follow. Then again, a few general guidelines will go a long way to help you stand out from the crowd.


  • Tailor each cover letter to the position and company you’re applying for. HMs will sniff out a generic application a mile off and not be impressed. Consider how you feel receiving a letter from a utility company that begins “Dear Valued Customer”

  • Keep things to the point. If you can make your case in three lines vs. three paragraphs, the HM will know you’re not someone that will waste their time as an employee.

  • Give plenty of examples that support or justify the experience you’ve given. “I’m experienced with laboratory techniques and data analysis”. Great! What does that mean you’ve actually done? At what point in your CV?

  • Spend time researching the company and be able to justify why it is them in particular you are applying to. Show some engagement with the role: either through referencing a case study, an aspect of working culture, or something that shows you’re not making another generic application.


  • Write nebulous and clichéd statements. “I am a team player, but also confident using my own initiative on projects”. If you want to talk about soft skills, list real examples of when you’ve been a team leader, or what you achieved working with others. “I am an excellent communicator” - a HM will believe that from how you write, not from a bland sentence like this.

  • Use the opportunity to be negative about your current employer and use this as motivation for making this application. A positive aspect to move towards is far stronger than moving away from a negative one.

  • Simply use a cover letter as a reworded CV. Make sure you are adding information rather than just rehashing things a HM can already see from your CV.

Talking about your experience

Keep in mind that a busy hiring manager may not necessarily be an expert in your particular area, and won’t have the time to check. It may be evident to you how the experience in your CV fits the role you’re applying for, but you have the benefit of knowing your background well! Unfortunately this has to be pretty explicit for a hiring manger though. Rather than “My experience at ACME included X, Y, and Z”, a more powerful approach might be: “At ACME, I used my X skills to progress project Y which seems to overlap with your company’s work with Z”.

Technical content

Be careful not to overload your cover letter with specific technology information that relates to something like a niche PhD project or an aspect of a single component R&D in industry. 95% of the time, there isn’t a direct overlap between your experience and the role you’re applying for anyway. Instead provide a description of what you personally have achieved and how this might transfer into what (in your understanding) the HM might be looking for. If you are applying for a more ‘creative’ role, why not consider saving words and attaching a portfolio, or a link to a GitHub account instead?

Teamwork and communication skills

Don’t fall into the trap of “At ACME, I worked in a team which achieved X”. You want to showcase your own achievements, not that of the team in general. What did you contribute that really made a difference? What initiatives did you bring in? This demonstrates you work well in teams and can communicate with others. Far more engaging and informative than simply “I am confident giving presentations to a range of technical audiences”!

Keep it relevant

Whilst some character and personal interests should be present, be careful not to overload the cover letter with unnecessary padding. Whilst it’s great that you have a healthy lifestyle and outside interests, playing in a local orchestra, enjoys outdoor walks, ran a marathon and reads science fiction books … unless you’re applying for a role where this is directly relevant, don’t spend much time at all in the cover letter. As for absolute cover letter length; three lines won’t cut the mustard, and a page and a half of dense type will quickly bore the reader. A healthy medium of one-half to two-thirds of an A4 side is about right for most applications.

Tailor your language

If you’re applying for a very formal, consultancy or perhaps technical-sales role, it’s important your cover letter demonstrates you can communicate formally and concisely. Conversely, if you know you’re applying for a role that is with a dynamic start-up and character and team-fit is important, keep it light and friendly and avoid dry “I was made aware of your vacancy via the Jobs Inc. advertisement that you have posted since last Thursday” type phrasing. Try to also address the person reading your cover letter. “Dear sir/madam” looks lazy compared to a cover letter that’s gone to the trouble to look up who might be reviewing CVs for particular role.

Active and positive trumps neutral

Make sure you give a clear indication of your ambitions and interests, and ‘active language’ is always far more engaging to read than anything neutral. “In this position I was required to do X and Y” is almost off-putting compared to “At ACME, I really enjoyed developing skills X and Y as part of project A, and I’m keen to apply these in the environment B that your company offers”. Closing off, it’s best to keep things positive and try and encourage a dialogue. Rather than simply “Yours Sincerely”, a phrase encouraging further discussion and encouraging the HM to get in touch with you will leave a positive note in their mind and they may do just that!

Working with your recruiter

An experienced and worthwhile recruiter will already have a good relationship with a company and know what sort of things will pique the interest of a hiring manager. They will be very well placed to help you tailor your application to a company, advise on what aspects of your cover letter are strong and which ones might need some refocussing, and be able to point you to links you might not find yourself easily that will give you a wealth of insight into a company and position. If you want to save time, and really make the strongest case possible for your application with constructive feedback that doesn’t blow your one chance with a hiring manager, a good recruiter will get you a long way. Ultimately, it’s in their interest too that you’re represented well!

At ECM, we’re very candidate-focussed and are happy to work with you to help you make the strongest case possible in your application. If you like our approach, and are interested in some of our roles, why not get in touch with us and see what we can do to help you today!

If you’d like to talk more about cover letters, get in touch with ECM – quote reference #COVERLETTER_ECM_KAJ, and feel free to send us a CV – we guarantee we hold your details in confidence, and your CV won’t be sent to any company without your express permission.