Software Engineer applicants have rated the interview process at HackerOne with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 100% positive. This is according to Glassdoor user ratings.
Candidates applying for Software Engineer roles take an average of 21 days to get hired, when considering 1 user submitted interviews for this role. To compare, the hiring process at HackerOne overall takes an average of 21 days.
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I applied through a recruiter. I interviewed at HackerOne (Groningen) in Sep 2025
Interview
I received an invitation from a recruiter to apply. The interview process consisted of three stages: a cultural fit interview with the person who would be my manager, a live coding technical interview, and a system design interview.
Interview questions [3]
Question 1
•The cultural fit interview was focused on getting to know each other and discussing experience, values, expectations... etc.
•The system design interview required designing a system to solve a given problem, explaining the solution, and answering follow-up questions.
Nothing overly complex, and all the interviewers were lovely and supportive throughout the process.
Recruiter interview, Hiring Manager, Onsite (technical, behavioral). Total time 3-4 weeks. Clear process with recruiter checking in every step of the way. Onsite behavioral was more about culture fit past experiences.
I applied online. The process took 3 weeks. I interviewed at HackerOne (London, England) in Jul 2025
Interview
As far as interviews go, it was a great experience! HackerOne managed to make the interview process straightforward and to the point, with plenty of support and guidance throughout the process. The interview consisted of 4 stages in total and was over in about 3 weeks, in which I received an offer. Each of the stages were your typical tech interview stages but, rather than an intense grilling session, it was more laid back and engaging which is a breath of fresh air