The interview process at HackerOne was smooth and structured. I had three rounds in total – the first was an introductory discussion about my background and a chance to ask questions about the company. The second was a technical round, where I was asked about OWASP Top 10, various web application vulnerabilities, and my understanding of triaging processes. The final round was a triage simulation, where I demonstrated how to provide a triage summary, set a CVSS score, and handle cases in a simulated environment. Overall, the process was clear and focused on evaluating both technical and practical skills.