Senior Engineering Manager - Compute

Netflix

You are given an array of time intervals (start, end) for meetings. Merge the overlapping intervals and return an array of non-overlapping intervals representing the consolidated meeting times. For example: Given the intervals [[1,3],[2,6],[8,10],[15,18]], the expected output is [[1,6],[8,10],[15,18]]. The intervals [1,3] and [2,6] overlap and are merged into [1,6]. Given the intervals [[1,4],[4,5]], the expected output is [[1,5]]. The intervals [1,4] and [4,5] overlap and are merged into [1,5]. Given the intervals [[1,4],[0,4]], the expected output is [[0,4]]. The intervals [1,4] and [0,4] overlap and are merged into [0,4]. Given the intervals [[1,4],[0,2],[3,5]], the expected output is [[0,5]]. The intervals [1,4] and [0,2] overlap and are merged into [0,4]. Then [0,4] and [3,5] are merged into [0,5]. Explain your approach. Write a function that takes a list of intervals and returns a list of merged intervals. What is the time and space complexity of your solution?

Netflix

Let's design an A/B test to re-engage inactive users of a mobile fitness app. Assume that users are considered inactive if they haven't used the app for 30 days. Our goal is to increase the number of users who return and actively use the app. Consider the following when designing your A/B test: Control Group: This group receives no intervention. We'll use this as our baseline to measure against. Treatment Group A: Push Notification with Personalized Workout Recommendations: Users in this group receive a push notification that includes workout recommendations tailored to their past activity and fitness goals (e.g., Ready for your next challenge? Try this 30-minute HIIT workout based on your past activity!). Treatment Group B: In-App Discount on Premium Features: Users in this group receive a notification when they open the app offering a discounted rate on the app's premium features, such as personalized training plans or access to exclusive content (e.g., Welcome back! Enjoy 50% off a premium training plan this week only!). For this A/B test design, specify: The hypothesis for each treatment group. The target metric(s) you would track to measure success, and how you would measure them. The segmentation you might consider when analyzing results (e.g. by workout type, fitness level, demographics). The duration of the A/B test and the sample size needed for statistical significance. Explain your reasoning. The potential risks and how you would mitigate them.

Netflix

Tell me about a time you went above and beyond in a project. What was the situation, what actions did you take, and what was the result? For example, perhaps you identified a critical bug that wasn't in your assigned area and took the initiative to fix it, or maybe you proactively automated a manual process that saved the team significant time. Detail the specific steps you took and the impact your actions had on the project's success or the team's efficiency. What did you learn from that experience, and how has it influenced your approach to projects since then? Focus on demonstrating your problem-solving skills, your ability to anticipate needs, and your commitment to delivering exceptional results.