Making a decision about accepting a job offer is a major one, and can determine your future career path.
So, to make sure that the decision is correct, one needs to have a clear list of things that are a deal-breaker for them.

Some of the most important things to consider while making a decision about a job offer is to discuss the base pay and incentives they'll receive, as well as the benefits they're provided within the job.
Other factors that must be considered are – the working hours required, and the time spent commuting (to plan your life accordingly and to make sure that you can maintain a good work-life balance on the job).
Responsibilities in your role and job description need to be pondered upon as well because it needs to match with your personal requirements of a job, which would help you in staying motivated in the role.
A better suiting job would ensure higher employee motivation and job satisfaction in the long run.
Another important factor that people forget to discuss is the question about advancement in the position, as that guides your career growth Growing in your role and eventually being able to take up more responsibilities show advancement in your role and one needs to consider the time span for promotion, that the employer needs to mention.
So, to conclude, working hours, salary, incentives, benefits, job role, advancement in the position, and many other such factors should be considered while deciding upon a good career fit. Out of these, the most important and non-negotiable consideration is good work culture and values at the workplace, because a company's values and culture define an employee's work experience.