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      ThreatSpike Labs

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      Penetration Tester Interview

      10 Mar 2025
      Anonymous interview candidate
      London, England
      Declined offer
      Neutral experience
      Average interview

      Application

      I applied through a recruiter. The process took 1 day. I interviewed at ThreatSpike Labs (London, England) in Feb 2025

      Interview

      Only 1 interview. A talk with the CEO and technical questions. Lots of focus on coding and code review (I presume recency bias as this was not a devsecops role).

      Interview questions [1]

      Question 1

      Why I am interested in the role, am I a self starter etc.
      1 Answer

      Other Penetration Tester interview reviews for ThreatSpike Labs

      Penetration Tester Interview

      30 Jan 2026
      Anonymous interview candidate
      No offer
      Negative experience
      Average interview

      Application

      I applied through an employee referral. I interviewed at ThreatSpike Labs in Jan 2026

      Interview

      I interviewed with ThreatSpike for a Penetration Tester role around 1/26/2026. The process felt unprofessional and the scheduling was a mess due to the company being London-based and several time-zone misalignments with the US. I joined a panel interview at 6am my time, and only one person was there on time; two others arrived 5-10 mins late, didn’t turn on cameras, didn’t introduce themselves and did not ask questions. The interviewer, who was a recent computer science graduate, led with a rapid-fire series of mostly networking and computer science questions, with no focus on pentesting methodology, AD security, or real-world scenarios. I didn’t receive a clear timeline or feedback after the interview, which left me with many unanswered questions about the role and team structure. When I asked about basic details like whether the position was W2 or 1099, and about junior mentorship or shadowing, the responses suggested a lack of organization and clarity. Overall, the process felt disorganized and shallow for a pentesting role, especially at junior levels. If you’re applying, push for a structured plan, explicit timelines, and a clear description of how a junior would be onboarded and supported.

      Interview questions [1]

      Question 1

      1. TCP vs. UDP 2. How DNS recursion works 3. What is SQLi 4. What is SQL 5. What is O(logn) 6. What is ARP 7. What is a VLAN 8. What is a DMZ 9. What is a firewall 10. Difference between heap and stack memory 11. User Space vs. Kernel Space 12. How User Space talks to Kernel Space 13. Three Types of XSS 14. Recursion vs. Iteration (Dev Perspective) 15. How many usable IPs in a /26 subnet
      Answer question

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