First, you should assume that your OF account is not private and could be leaked at any time, even if you hide your name/face. Whether that will affect your job depends on what kind of job that would be and how you handle the leak.
There are two big no-nos: anything with religion and any job that has to do with kids. Your application will be denied if you are vetted and it turns up. If it is discovered after you are employed, they will kick you out, no matter how good you do your job. In the case of religion, you will be kicked out by men; in the case of kids, it will be by women.
Then there is another broad category of jobs where it is not a problem per se but where it is ill-advised to have (had) OF on the side, and that is any job where you will have some sort of non-transient authority over other people that are not employees of the same organization you work for. Think of a career in politics, a job as a police or correctional officer, an academic professor, etc. Having (had) an OF account, if you were not open about it before, could be used against you to blackmail you at one point in your career or to question your authority.
For any other job, I don't see the issue. Young people now entering the job market have grown up with porn and are familiar with OnlyFans; many have an account there. The vast majority of them don't care that you did OF. And older folks generally don't care as long as you do your job well. Note be prepared that it may be brought up at one time, but as long as you don't try to deny it, don't act ashamed about it, and laugh about it, no one will care.
Also, if that is you in your avatar, please PM me your OF account if you decide to start one. I'll sub.