[GianFabien]

You only mention Python as your skillset. Most recruiters seem to keyword match on a longish list of terms. So whilst your STEM background might be impressive, unless the job requires domain experience in your field and is Python heavy, it might be difficult to tick enough boxes to get an interview.

You might also want to refrain from describing your current role and employer in negative terms.

Stop being a "good little slave", sharpen your image, attitude and ask for a raise and a promotion to get a fancier job title. That might in turn make you happier and make you more desirable in the eyes of potential employers.

[_vpbe]

I think you’re overestimating my current job title. Peep the LinkedIn

[jstx1]

Your initial description was very vague. Saying that you have 5 years of Python might be technically correct but in reality your last developer job ended over 4 years ago and now you're doing completely unrelated stuff. When people look at your resume, they'll see a salesperson at Home Depot who hasn't programmed in years. You'll need a good story about why you moved away from development - that's the part that will really stand out as a red flag.

You're essentially trying to break into the industry (again) which can be quite difficult. You might be carrying some experience but you also have some baggage to account for.