Lying about position on job title.

This is a good question and it depends on the job. The fact that you say 'lying' implies that it wasn't remotely a SWE job, BUUUUUT, dev ops roles can vary. Some companies have dev ops under engineering, some have it under IT, some have it as it's own department. If you were a "dev ops engineer" on a team under the "Engineering" organization and your work involved a lot of software in the same codebases as a "typical SWE", then you can probably get away with putting "Software Engineer" on your resume. If you were fairly isolated, never wrote code and just configured AWS/Google Cloud/Azure all day, then I probably wouldn't say "Software Engineer" on your resume because it misrepresents what you actually did. It's generally ok if background checks have different job titles. When you fill out the info for the background check, you should use the official title, so their verification process will match. The purpose of a background check is to make sure the info you submit on the background check is correct.