I received an offer letter from a startup company contingent of passing a reference check. The company's HR requests 3 references, each being from a different company. 2 of those references need to be direct managers. I am only able to list 1 manager as a reference along with 3 coworkers from 3 different companies. I'm missing 1 more manager from a different company to list as a reference.
My job experience:
- 3 month internship 3 years ago in college. I have 1 co-worker reference here but no manager reference. The manager left the company since then. Our work relationship was neutral.
- 5 month full time where my manager and I did not get along. I did not keep in touch after leaving. I have 1 co-worker reference from here, but no supervisor reference.
- a 26 month long full time where I have 2 positive managers references and 4 coworker references.
I am having trouble contacting my internship manager. I don't have any of his updated contact info except on LinkedIn. I've tried following up with him 2x on LinkedIn this week with no success. I plan on contacting the internship HR if they potentially have my old manager's contact info.
Today I spoke on the phone with HR of the future employer in hopes of compromise. They were in a hurry so I was unable to negotiate. They were firm to list 2 supervisors, but would give me more time.
At this point I'm nervous of losing this offer. What else can I do at this point to improve this situation? If I am unable to get in contact with my internship manager and the job offer falls through, I might face this problem again with another potential employer. What would be a long term solution?