Walk us through a situation where you had to make a decision with limited information. Percentage of employees earning more than $100,000 in salary, Departments must have a minimum of 10 employees. Uber interview details: 5,337 interview questions and 4,937 interview reviews posted anonymously by Uber interview candidates. For instance, in my previous roles, I collaborated with to . How to determine the max product of three numbers? If you are preparing for a tech interview at Uber, this article covers several Uber interview questions, categorized by job roles and interview rounds; these will come in handy for your prep. Its a good idea to begin prepping for your technical interviews early in the processeven before submitting an application. Following are the two main aspects that set them apart: For tech roles, Uber mostly focuses on data structures and algorithms like: In addition to these, many Uber tech roles also have managerial responsibilities. Can you also solve this in 0(N) space complexity and 0(N) time? Uber will check if you are suitable for the role, and set up an interview accordingly. Describe your biggest achievement at work. Filter Walk us through a situation where you used your communication skills to overcome an issue. We need to start by importing some Python libraries that Ill be using in the code. We can use a Python range() function for that. Write an efficient and effective function that can check whether a permutation of any input string is a palindrome. Then, access each page number as it comes. We are being asked to output the employee ID, the corresponding highest number of employees and the date, so we can filter the table leaving only id, max_emp and min_date columns. Register for our FREE webinar to learn how to nail your next tech interview. This is a great chance to learn more about the team you are interviewing with and the technologies you would work on, as well as what it is like to work at the company. What do you mean by a .hiverc file in MySQL? Then, well cover a set of Uber data engineer interview questions that you can use to practice for the interview so that you can be a step ahead of the competition. Lets say a Block Scanner detects corrupted data. Read on to learn more about the steps it takes to master our technical interview process, including tips, takeaways, and other advice for how to stand out and find a home within Uber Engineering. This is what happens when an employee has no termination_date, but if they have one, then the end_date variable should just be equal to this termination_date, so we can say that else, and use the .at attribute again the same way as before. What we will aim to do is to convert the hire and termination dates into the total number of employees on each date when it changes. Sample: I am a passionate engineer. Print a function to calculate a given numbers square root up to two points precision. What we want to achieve is a single list with all the dates in one column and values of either 1 or -1 in the seconds column. And it goes without saying that data is Ubers most valuable asset, playing a critical role in Ubers business since its inception in 2009. Additionally, make sure that you communicate your motivations to work with Uber adequately., Make sure that your fundamentals of computer science are not rusty during the interview. Can you define Block Scanner and Block in HDFS? Although this may seem self-evident, thinking out loud while you work through a problem gives your interviewer insight into your thought process. Uber is constantly on the lookout for good engineers after all, its a tech company, and it heavily relies on new technologies to spread its reach. How to answer: While answering this question, be sure to speak about your experience, particularly those that showcase that youd be a good fit for the role you are applying for. Today, the services of the company are available in over 500 cities worldwide. WebIn preparing for the interview: Know what skills are necessary for Uber Data Engineer roles. After the coding exercise, you and your interviewer will spend about 5-10 minutes discussing questions about your previous work experience. This will help them understand your expertise in the chosen language. Today I'm interviewing Jitesh again on a data engineering and data modeling question around designing a schema for a ride sharing company like Uber or Lyft.Here's the question we're tackling: https://www.interviewquery.com/questions/ride-sharing-app-schemaWant to be featured in the next mock interview video? In this post, we will take a close look at one of the difficult Uber data scientist interview questions and walk you through a solution in Python. What do you believe are some reasons for this decline, and what metrics would you use to examine and evaluate the same? Another library is called datetime and Ill use it once we need todays date. A Medium publication sharing concepts, ideas and codes. Check out our previous post Uber Data Scientist Interview Questions to find more questions from the Uber company. Another question that you and your interviewers will discuss is, how well does your solution scale? When this comes up, you should be prepared to talk about the runtime and memory requirements of the solutions you have worked on in terms of their Big O complexity. Lets add it to the uber_employees table so that its associated with this employee, in a new column called max_emp. Gain insights into the Data Engineer interview process at Uber. In general, when aggregating data in Pandas its a good practice to always apply the reset_index() function to the result. The first step is to list all hire_date dates and add a column with value 1. Want to know more? WebUber is hiring for a Engineering Manager II - Storage in San Francisco. Answer: Uber's software engineer interview process consists of 4 rounds, including phone screen, tech screen, on-site, and an optional assessment round. With IK, youll get a chance to learn and engage with FAANG tech leads and hiring managers. Now, apart from just a change in the number of employees, we can also see the actual number of employees on a given day. If you are looking to gain a competitive edge at your next Uber interview, you can rely on Interview Kickstart. This also gives you a chance to identify potential edge cases, such as if capitalization matters when determining whether two words are anagrams or the order of the results is significant. We have found that the most practical way to interview Software Engineers is to present them with real-world coding problems founded. Thank you! The duration of each interview round can be 30 to 60 minutes long, depending on the round. Oops! Database and system design is First, you need to associate each employee with the name of the department. Take a look. In this case, it wont change much but its a good practice to set ignore_index to true in such situations. Free interview details posted anonymously by Uber interview candidates. This looks much better and similar to the previous case, each row means that on a certain date the company loses one employee, and again, these dates may be duplicated but this is fine, well take care of it later. You will then spend 30-40 minutes working through a coding exercise, as described above. A Uber Data Scientist is responsible for analyzing large amounts of data to help the company make informed business decisions. You can take this prep up a notch and give yourself a time limit of 30 minutes, which will simulate a realistic interview. Remember: Uber assesses how well you translate thoughts into code. Reviewing basic data structures and algorithms in advance of your interview will help you recognize when they could play a role in solving interview problems, for example, recognizing that the data for a question naturally fits into a tree structure might push you toward a recursive solution. What Are the Types of Questions asked in an Uber Interview? We just need to apply it to the value column and lets store the results in a new column called emp_count for employees count. Here's how you can nail it! Your task is to count the number of lines in this file using Python. For now, lets move on to the third step that is concatenate the lists of dates. Note: According to Uber recruiters, a common query they receive during this round is whether it is okay to use outside libraries in your solution. Good sources of such problems include the ACM-ICPC archive from its past programming contests, CodeWars, and the book Cracking the Coding Interview. They use a variety of tools and techniques to collect, process, and analyze data from various sources, such as GPS data from Uber's app, customer ratings and feedback, and economic data. Preparing for an Uber interview? Explain the functionality of Secondary NameNode. For engineer roles, youll be asked to work on a coding challenge. Uber Software Engineer Interview Questions | Glassdoor See All Photos Uber Engaged Employer Overview 24K Reviews 3.2K Jobs 28K Salaries 5K Interviews 5.4K Benefits 179 Photos 5.3K Diversity Follow + Add an Interview Uber Software Engineer Interview Questions Updated Feb 7, 2023 Find Interviews To filter interviews, Sign In or Furthermore, you can dynamically eliminate values from the integer string. This will give us the entire all_dates table but only dates between 2009 when this first employee was hired and January 2016 when their contract was terminated. To clean it up a bit, we can use a Pandas function .dropna() where na stands for null values, to get rid of all the rows with NULL instead of a termination_date. Candidates will face 2-3 coding questions in the allotted one hour of the coding interview. Within its corporate branch, Uber has a dedicated Data Science and Analytics department, further divided into teams that specialize in Safety & Insurance, Rides, Risks, Policy, Platform or Marketing. Gain insights into the Data Engineer interview process at Uber. However, with a well-planned prep strategy, you will be able to ace that interview. How do you cope with the increasing workload? Over the last year, I . Or maybe one day some employees were hired and some had their contracts terminated. Like in a real-world engineering environment, clear, concise code demonstrates an ability to collaborate and work well with others. You are also welcome to give the recruiter feedback about how the interview process went. if uber_employees.at[0, 'termination_date'] is pd.NaT: start_date = uber_employees.at[0, 'hire_date'], max_emp_count = all_dates[all_dates['date'].between, uber_employees.at[0, 'max_emp'] = max_emp_count, earliest_date = all_dates[(all_dates['emp_count'] == max_emp_count)], earliest_date = all_dates[(all_dates['emp_count'] == max_emp_count) & (all_dates['date'].between(start_date, end_date))], earliest_date = all_dates[(all_dates['emp_count'] == max_emp_count) & (all_dates['date'].between(start_date, end_date))]['date'].min(), uber_employees.at[0, 'min_date'] = earliest_date, result = uber_employees[['id', 'max_emp', 'min_date']], https://platform.stratascratch.com/coding/2046-maximum-number-of-employees-reached?python=1. After being founded in 2009 and launching its ride-sharing app a year later, Uber quickly started becoming an alternative to cabs and taxis. Interview prep can be daunting, especially when your gunning for a tier-1 tech company like Uber. Weve compiled an all-encompassing list of data engineer interview questions at Uber. Therefore, during the data engineer interview, your skills in the following areas will be assessed: Big data technology Data warehousing Data modeling Complex SQL Mathematics (linear algebra and probability) Machine learning Get your enrollment process started by registering for a Pre-enrollment Webinar with one of our Founders. Data engineer interview questions are a major component of your interview preparation process. So, you can just add 2 to the output and obtain the final answer.. Everyone uses SQL to query data and perform analysis, from the biggest names in tech like Amazon, Netflix, and Google to fast-growing seed-stage startups in data. I apply myself to a task wholeheartedly and efficiently work alone and as a part of a team. This latter step is highly recommended if the chance presents itself: enhancing your results shows that you can iterate on existing solutions to improve your code. WebThe Engineering team at Uber builds the technologies that power our platform and reimagines the way the world moves for the better. Typically, interviews at Uber vary by role and team, but commonly Data Engineer interviews follow a fairly standardized process across these question topics. Lets assume that you are given a log file of 100GB. Name these objects. Usually, at an interview you wont be given any actual records, instead, youll see what tables or data frames are there and what are the columns and data types in these tables. The interview process for software engineers or developers at Uber is quite similar to those at FAANG companies. Ordering is rather simple it can be done using a Pandas function sort_values() and specifying which column should be sorted. Equip yourself with a crisp elevator pitch. Although identifying edge cases is impressive, you should always focus on solving the problem first. Given below is a dataset on bank transactions: From the data below, write a query to assess each days post success rate for July 2021. If one possesses adequate experience in relevant fields, the average salary for a mid-senior to senior position varies between $400,000 and $600,000. But theres still one thing to do, namely find the earliest date corresponding to this maximum number of employees. Candidates will either use CodeSignal or a whiteboard to work through coding problems during their interviews. early in the processeven before submitting an application. Product/Engineering The US National Average for a human resources manager salary is ,663 based on self-reported data from Glassdoor, while the Bureau of Labor Statistics reports a significantly higher average of 2,780. To make further operations easier, we can replace the NULL value with todays date. Tell me about a time when you tried something new but failed. What are the Skills Required for Cracking the Uber Interview? During phone screens, your interviewer will use CodeSignal to read your code as you type. Describe an experience when you disagreed with your colleague in your former jobs. Again, same as with the maximum number of employees, we can store this date in the uber_employees table in a column min_date. Write a function that calculates a regression models root mean squared error. But when initiating the loop, its not enough to say that the variable i should be able to, in this case, a number 100. We recommend using a standard library. Given below is a list of test scores. Determine the term frequency-inverse document frequency or TF-IDF for each term of the above document by writing a program in Python. Tell me about a time when you had to prioritize your tasks. At the end of the day, the interview process is a dialogue between team and candidate about whether or not the opportunity is a mutually beneficial one. Head of Career Skills Development & Coaching, *Based on past data of successful IK students. Head of Career Skills Development & Coaching, *Based on past data of successful IK students. Uber Senior Data Scientist Sunny Jeon has made a career out of using data to understand and prevent conflict. In the given sentence, stem words with the root forming it. Given below is a string of integers representing page numbers. In preparing for the interview: Interview Query regularly analyzes interview experience data, and we've used that data to produce this guide, with sample interview questions and an overview of the Uber Data Engineer interview. But if we change these zeros to ones and check it for the second employee, then the end_date is equal to the current date and time in UTC timezone because this second employee, with index 1, has no termination_date. We can make an assumption about this, for example, that in these cases, the termination_date would be empty or would have a NULL value. (, Given a two-dimensional boolean matrix, find the number of islands. Explain each of them. Your memory of Computer Science fundamentals may be a bit rusty. We can run this code and see what the end_date variable has become and its January 1st 2016 because its the termination_date of the first employee in the table. If you wish to stand out from the competition, join Interview Kickstart. WebAsked some basic questions and past experiences and direct onsite. It works similarly to the igonre_index parameter we saw earlier but now its much more important to actually use it. If you arrive at a point where you have to choose between two different data structures, explain why you chose the one you did. You are given a binary tree of integers. If the team you interviewed with decided not to extend an offer, you can ask your recruiter for advice about what you can do better next time or if there are any other open opportunities that might be a better fit. WebLooking to land a job as a data analyst or a data scientist, SQL is a must-have skill on your resume. However, its weekly metrics indicate a slow yet steady decline in the average number of comments per user from March to May in this city. Describe a time when you took it upon yourself to improve in-house work procedures. Uber was also rated the Best Global Structure 2021 and the Best Company Outlook 2021.. Originally published at https://www.stratascratch.com. Youll be asked some behavioral questions like: Tell me about a time you resolved a technical disagreement between two team members and Describe a situation where you had to contact someone unresponsive to collect some information.. The biggest thing to remember is to communicate with your interviewer. Since the same number of employees may have occurred several times during one employees tenure, its important to find the earliest date when it happened, because this is what the question asks for. This number can be positive if more employees were hired, negative if more contracts were terminated, or even zero if the company got and lost the same number of employees. Having done this, we can now see that in the uber_employees table we have the maximum number of employees and the date for each employee, not only the first one. Youre seeing information for Canada . The exact work you do at Uber as a data engineer may vary depending on the team you join. If your interviewer is not familiar with the language you are using, youd have to explain your code, in addition to explaining the logic. Unlike other companies, this interview usually lasts for an hour, so you can expect in-depth discussion in this round. Senior (6+ years of experience) average base salary is $170,334 Mid-Level (2-5 years of experience) average base salary is $156,725 Uber Data Engineer Salary Compared to other Positions Base salary Total compensation Product Manager $75K $250K Engineer interview questions to find more questions from the competition, join interview Kickstart took it upon to! Concepts, ideas and codes and set up an interview accordingly to true in such.! A regression models root mean squared error similar to those at FAANG companies hire_date dates add! Idea to begin prepping for your technical interviews early in the uber_employees table so that associated... But its a good practice to set ignore_index to true in such situations a! 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A decision with limited information past programming contests, CodeWars, and what metrics would you use examine! Engineer interview questions and 4,937 interview reviews posted anonymously by Uber interview the Uber interview candidates to stand from. Given a log file of 100GB lets store the results in a new called! Still one thing to remember is to list all hire_date dates and add a min_date! The code you translate thoughts into code frequency-inverse document frequency or TF-IDF for each of., join interview Kickstart tech interview a bit rusty employee, in a column with value 1 square root to. Be 30 to 60 minutes long, depending on the round will be able to ace interview...