Check sentence is grammaticall correct or there is another best way to express

I need to check this is correct or not.
Software Engineering is Very Stress full Job As u know.normally software Engineers has no actual time period to work on.They sitting on the same chair for hours

Suggested subject line: Is this sentence correct or is there a better way to express it?

  • that would fit into the allocated space.

You have used incorrect capitalisation, spelling and punctuation and included non-standard abbreviations. In addition some of your phrasing needs tweaking.

Software Engineering is a very stressful job. Software Engineers usually do not have set working hours. They may sit in the same position for hours at a time.