The company seems to be very unorganized. They setup an interview with me over LinkedIn instead of email. Also, my interview was with the company's CSI and a product manager but the CTO joined very late and left sooner and acted unprofessional. Also, they told me that the company does not have an HR which is kinda a red flag for me.

The interview process was through LinkedIn messaging. The interview question changed meanwhile in the timeline without prior notice! needed to follow up... lack of clear and timely communication through interviewing. However, was a good experience to learn by doing their code challenge.