Digital14 Senior Software Engineer interview questions

The company contacted me ofter 3 or 4 months after job posting. Within couple of days suddenly I had around four interviews. First with HR, then technical, then interview with VP. Then for about a month HR manager kept me waiting. Then, despite the initial fast pace, he suddenly stopped replying to my emails. Overall experience is disgusting because I have not received any final answer, even a standard turndown message. The HR manager simply started to ignore my emails. It's really unprofessional.