HubSpot Software Engineer interview with two systems design rounds

HubSpot·Software Engineer·Reported Apr 2026
Online AssessmentTechnical ScreenOtherHard

I went through a loop in which an online assessment led into human interviews, and the technical work focused heavily on system design. After the initial coding assessment, I had multiple rounds, including two separate systems design interviews and a coding interview. I spent most of the process working through architecture questions.

One systems design discussion centered on a streaming platform. I could tell they were testing how I reasoned about scalability and trade-offs, not just whether I could list components. Another systems design round felt less smooth because one interviewer seemed less prepared, and the follow-up questions didn't quite land as they should have. The expectations stayed consistent: be clear, keep the reasoning structured, and explain decisions under pressure.

The process was challenging because I had to balance problem-solving with clear communication while time was moving. The interviewers were generally professional, but I didn't get an offer. Looking back, what stood out most was how much the systems design portion depended on explaining trade-offs clearly, not merely having an answer.

Location: London, England. Overall feedback: Positive. Offer status: No offer.

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Curated and edited by PracHub

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Interview at a glance

Company
HubSpot
Role
Software Engineer
Rounds
Online Assessment → Technical Screen → Other
Difficulty
Hard
Date
Reported Apr 2026

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