The interview process involved 3 1-on-1s with someone who went through the accelerator themselves, someone who worked as a senior software engineer at the company, and the guy that ran the accelerator program.
They were super friendly and basic technical questions were asked, due to the role being an accelerator one. I was surprised to learn that I received an offer after 1 interview, although maybe fitting 3 smaller interviews into a 1 hour 30 minute interview is more efficient.