I applied online. The process took 1 week. I interviewed at HackerOne in Nov 2024
Interview
The interview was probably the most positive interview experience I've ever had. The whole team, from start to finish, were really supportive and the person acting as the Recruiter for the role was really helpful with answering questions etc. and keeping me in the loop.
Throughout the process I felt as though I was being supported to succeed, rather than expected to fail, and the conversations I had were relaxed, friendly but still informative on both parts.
I had to do a technical test, which was fairly standard, and the Senior Engineer was happy to answer any questions and encouraged me to optimise the solution afterwards.
Overall it was a really positive experience and it was great getting an insight to the team. I couldn't wait to hear back from them and I was super excited to get an offer.
Stages:
- Initial call
- Conversation with Hiring Manager
- Technical test
- Conversation with team members
Interview questions [1]
Question 1
I signed an NDA, but just general competency questions
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 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.
I applied through a recruiter. The process took 3 weeks. I interviewed at HackerOne (Austin, TX) in Aug 2025
Interview
The interview process was very high quality; from the very beginning, the recruiter and hiring manager were very communicative and answered any question I had during the process. Each individual had genuine interest into "who you are" and made the interactions feel more like a conversation rather than an interrogation. The technical interview was collaborative and fun, challenging you to think deeply without the typical "gotcha" questions that are difficult to complete. After having done quite a few interviews through my career, I can confidently say that my interview experience at HackerOne was one of the best.
Interview questions [1]
Question 1
I can not disclose questions during the interview, but preparing general behavior questions as a starting point would be my suggestion.
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 86% positive. To compare, the company-average is 76.7% positive. This is according to Glassdoor user ratings.
Candidates applying for Software Engineer roles take an average of 33 days to get hired, when considering 7 user submitted interviews for this role. To compare, the hiring process at HackerOne overall takes an average of 26 days.
Common stages of the interview process at HackerOne as a Software Engineer according to 7 Glassdoor interviews include:
One on one interview: 24%
Phone interview: 24%
Background check: 14%
Skills test: 14%
Drug test: 5%
Personality test: 5%
Presentation: 5%
Group panel interview: 5%
IQ intelligence test: 5%
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