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      Senior Applied Scientist Interview

      21 Mar 2024
      Anonymous interview candidate
      No offer
      Negative experience
      Average interview

      Application

      I applied online. The process took 4 weeks. I interviewed at Onfido

      Interview

      The first round was with a recruiter. It was a the only chat of the recruitment process that was nice. The second round was with a simple one-hour textbook-like interview in the style of: Can you describe batch normalization? Can you tell about SIFT and HOG image descriptors? Thereafter were two coding rounds and three other rounds of textbook questions, a paper presentation and practical questions. All in all, the process was way to long and impersonal. At no point I was asked about my personal experiences and interests. People, apart from maybe the recruiter, did not seem to care. Moreover, even after several hours of being tested I could still not get much info about the team and the job.

      Interview questions [6]

      Question 1

      Can you describe a moment in your career that made you proud?
      Answer question

      Question 2

      Can you describe waht CLIP is?
      Answer question

      Question 3

      What is the mean value and variance of the binomial distribution?
      Answer question

      Question 4

      What is TPR, ROC? How can one construct confidence interval on the TPR?
      Answer question

      Question 5

      What are disadvantages of simple SGD optimization? How can they be improved?
      Answer question

      Question 6

      What is batchnorm? How does it relate to other normalizations?
      Answer question
      2

      Other Senior Applied Scientist interview reviews for Onfido

      Senior Applied Scientist Interview

      18 Apr 2024
      Anonymous interview candidate
      No offer
      Negative experience
      Easy interview

      Application

      I applied online. The process took 4 weeks. I interviewed at Onfido

      Interview

      Pretty standard. Recruiter call with 4 rounds of interviews. Eventually got a call saying they are not rejecting me but also not saying a yes, which is pretty unheard of. I consider them to indecisive and unprofessional and will recommend to avoid as it reflects their internal working process.

      Interview questions [1]

      Question 1

      Pretty standard bookish questions you can find on the internet. BatchNorm, Stats etc.
      Answer question
      1

      Senior Applied Scientist Interview

      27 Apr 2024
      Anonymous interview candidate
      No offer
      Positive experience
      Difficult interview

      Application

      I applied online. The process took 4 weeks. I interviewed at Onfido in Apr 2024

      Interview

      Overall, I enjoyed the process. It was very transparent, I was given all the information needed to get prepared for each step. Unlike most of the companies that reject a candidate by email without any feedback, I was given a call by the recruiter who took the time to explain what the team liked and did not like about my profile. The feedback was constructive and I found the decision quite fair although I am upset. I applied on the company website. The interview process started with a call from a recruiter to discuss the position, my background, my expectations, and the overall interview process. The first step of the interview is a 1-hour textbook question with two employees from Onfido. The questions cover four main categories: probability, statistics, machine learning, and deep learning. The next step, if the previous one is successful, is the panel interview consisting of 5 rounds interview with 5 different people from Onfido. Each round is 1 hour long, and there is 1 hour break between each round. - For the first two rounds, I had to solve one leet code-like coding exercise for each. -The next round is the applied deep learning interview in which I presented a deep learning paper of my choice. I also presented a previous project I worked on. This round is closed with some practical questions about training and using deep learning. -Next comes the ML and DL fundamental interview. This interview is about answering textbook questions on ML, DL, and Maths (statistics, probabilities, calculus) using a whiteboard. -The last round is about chipping and monitoring ML and DL systems in production and how to work alongside ML engineers and MLOps. I did the whole process remotely.

      Interview questions [16]

      Question 1

      What is batch normalization? what are its limits? what other normalization could think about?
      Answer question

      Question 2

      What is backpropagation in deep learning?
      Answer question

      Question 3

      what is the relationship between Kullback-Leibler divergence and cross-entropy?
      Answer question

      Question 4

      What is contrastive learning? When is it used?
      Answer question

      Question 5

      What is the triple loss?
      Answer question

      Question 6

      What is the chain rule in calculus?
      Answer question

      Question 7

      How do you take into account the constraint FPR < 1% while training a neural network?
      Answer question

      Question 8

      How do you speed up the training of a deep learning model?
      Answer question

      Question 9

      What do you insert in a model card?
      Answer question

      Question 10

      What are the mean and variance of a binomial distribution?
      Answer question

      Question 11

      How do you organize a deep-learning project from experiment to production?
      Answer question

      Question 12

      Compute the gradient of an output with respect to one of the inputs given a computation graph
      Answer question

      Question 13

      What is the Jacobian matrix? what is the Hessian?
      Answer question

      Question 14

      What are depthwise convolutions in deep learning
      Answer question

      Question 15

      What is the Transformer model? What are its limitations?
      Answer question

      Question 16

      What is HOG? What is SIFT? How are they computed?
      Answer question
      4