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      Entretien pour Senior Software Engineer

      8 nov. 2017
      Candidat à l'entretien anonyme
      Newtown, PA
      Offre refusée
      Expérience neutre
      Entretien difficile

      Candidature

      J'ai postulé via un recruteur. Le processus a pris 3 semaines. J'ai passé un entretien chez Enterra Solutions (Newtown, PA) en sept. 2017

      Entretien

      I was connected to Enterra by a third-party NYC-based recruiter. I was told that 100% remote work would be permitted. A technical phone interview was scheduled. After it, an on-site interview was scheduled. The first part of the on-site interview was a lunch meeting with the CTO. The second part was an hour-long panel interview. In the panel interview were two on-site developers, one manager, and one senior remote developer over the phone. The remote developer asked me most of the technical questions. I was not required to write any code at any point in the process, although I did share a link demonstrating some of my work. I received their decision after about a week. A 30 minute final phone call was then scheduled with the manager during which I was asked to share a joke. I then received an offer in the mail in a couple of days. I was asked for three managerial references which I provided; they were all called. I was asked to sign a ten-page restrictive covenant document which contained non-confidentiality, non-solicitation and non-compete clauses. I listed and negotiated some of these clauses or unclear points with the company's legal counsel over the phone. If you get to this stage, I urge you to read this document very carefully. The non-compete was for 18 months. Moreover, it had no exemption in the event the employee was to be terminated without cause. Both of these clauses were not agreeable to me. I tried negotiating it down to 12 months but failed. Assuming you're not a pushover, I recommend looking elsewhere so you won't be burdened by such a restraining agreement. Note that their work hours are from 8:30 am to 5:30 pm Eastern Time. They've a daily team standup at about 9 am. Their paid leave is three weeks per year, with no special time allocated or sick leave afaik. A remote employer is required to work on-site for the first week, following which they can work remotely. The company pays for the hotel reservation for the week. I negotiated the salary within reason. Their tech stack includes Python 3, NumPy, Pandas, SciPy, scikit-learn, PySpark, RabbitMQ and Docker. Be prepared to talk about your experience with each of these.

      Questions d'entretien [6]

      Question 1

      Describe how to implement and indicate the computational complexities for various operations of a hash table, linked list, binary search, BFS, DFS, and binary search tree.
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      Question 2

      Given Pandas and NumPy, why would you sometimes prefer one over the other? How would you handle missing values in a dataset?
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      Question 3

      In Python, what is a decorator and how does it work? What are the two ways to implement a decorator (function and class)? What is the use case for a decorator?
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      Question 4

      In Python, what are the differences between a list comprehension and a for-loop? Is there a difference in the computational complexity of the two?
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      Question 5

      What is the fundamental (kernel level) difference between Docker and virtualization?
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      Question 6

      In machine learning, what is Cross Validation, how is it implemented, and what is it used for?
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      6