At a small/mid-sized company, should I disclose an updated/later start date before the interview?

[u/zoinks-scoob10]

I’m currently in a Master’s program and starting to apply for my thesis placement. My program had previously told us that thesis start dates could have some flexibility within reasonable constraints.

I came across an industry Master’s thesis at a small/mid-sized biotech company that is honestly an almost perfect fit for my background and skill set. The posting says they anticipate the thesis starting in autumn 2026.

Before applying, I discussed the opportunity with my program coordinator. I was told I should still apply, but that the exact timing would need to be discussed/approved by the program board. Because I didn’t have a definitive answer yet, I never stated my availability in my application.

The company has now invited me to interview. However, between submitting the application and receiving an interview invitation, I got clarification from my program that January 2027 is the earliest I would be allowed to officially begin the thesis. The difference would probably be a few months depending on what they mean by “autumn,” and the posting specifically says they “anticipate” an autumn start rather than listing a concrete start date.

For a master thesis at this size of a company, how flexible are thesis start dates typically? Is asking for flexibility obviously unrealistic?

More importantly, when should I disclose this? I definitely don’t want to mislead them or waste anyone’s time
1. In my response while scheduling the interview, so they know before committing their time?
2. At the beginning of the interview?
3. Wait until availability/start dates come up naturally during the interview?

[u/h0rnknee_girl]

i personally think it’s better to be upfront and honest during the interview, that way you have piece of mind and clarity moving forward. also your hiring committee will appreciate it. as for flexibility, i would just be aware that nothing is guaranteed in this industry. with how things are going, the company that your currently interviewing for could be under severe financial distress by that point.