Have as many friends as you can check your resume for spelling, formatting or issues with grammar.
I cannot tell you how many resumes I review that have a few errors that stick out immediately. Recruiters notice this.
Don’t be shy about your accomplishments. I have a paragraph in bold for every job I’ve had that lists one impressive achievement I had on that job.
A PDF will ensure that your formatting is exactly how you want it to the person looking at it. Bonus: A PDF ensures that nobody can see the history of your word doc.
When a recruiter or dev is searching through their computer for your resume, they need to be able to find it easily and they can’t do that if it’s titled “Resume.pdf” like every other 500 resumes they have.
The best resumes are the ones that you remember.