Job description question: software developer

I'm set to begin the PR application process soon going for either federal skilled worker, French language skill, or both depending on what consultants suggest or IRCC decides.

When submitting a job description, my official title in the US is senior software engineer, but my degree is in an unrelated field.

When submitting an application, my plan was to use the non-regulated "developer" NOC instead since I have the work experience, but not an official credential like PEO certification. Is this likely to create a problem if I use the description my company provides with the existing title, or would the description be read for duties rather than title?