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      Senior Frontend Developer Interview

      Jul 6, 2025
      Anonymous Interview Candidate
      Tel Aviv-Yafo
      No offer
      Positive experience
      Difficult interview

      Application

      I applied through a recruiter. The process took 1 week. I interviewed at Palo Alto Networks (Tel Aviv-Yafo) in Jun 2025

      Interview

      I had 2 interviews for the Senior Frontend Developers role: > 1st technical interview - phone call - the interviewer explained mostly about their product and asked me a few questions about my experience and my overall Angular knowledge. > 2nd technical interview - remotely by Zoom, with a duration of 2hrs - conducted by two interviewers and was divided into 3 parts: 1. Introduction 2. Technical orientation 3. Live Coding On the downside: The screening process felt a bit more strict and picky comparing to other companies in the market, especially due to the high bar the industry set upon interviewing candidates. On the upside: A very educating experience - both personally and professionally. I learnt a lot from mistakes I made, the interviewer (one of them at least) was extremely thoughtful and kind, and remarked they might asked me annoying questions during the interview but it's nothing personal, and it's ok to not know everything - and the assessment will not fully depend just on answering the questions, but also on the overall thinking process and personal vibe.

      Interview questions [2]

      Question 1

      Vanilla JS: Q: SetInterval is updating a page color after a user inputs a large number (defined as BigInt). What could be the reason the system gets stuck as the number the user enters, increases?
      Answer question

      Question 2

      StackBlitz Live Coding - Angular (19+): A list of products is being rendered in the DOM after an HTTP request is sent to an endpoint and returns an array. Q1: Which DOM States are you familiar with? Q2: How would you refactor the code for both the DOM and the component, in such a way it will align with the new Angular reactive features (Signals etc.)?
      Answer question