WebEnroll in the Data Engineering Interview Course and learn how to develop skills to pursue a career path as a data engineer. What is SerDe in Hive? Know what skills are necessary for Uber Data Engineer roles. Bolt in Cape Town Wherever you are in Cape Town, on a day out on the beach at Camps Bay or on a shopping spree at one of Africas biggest malls, Canal Walk Shopping Centre, always count. Thank you! Uber expects candidates to be proficient in any or all of Go, Python, Ruby, Java, and C/C++ programming languages. 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. Two fairly difficult SQL questions invoving multiple tables and nested relations . Next, we can concatenate the two lists together. You are scheduled with Interview Kickstart. Hadoop tech stack Oozie, Hive, Spark, Airflow, MapReduce, etc. Youll be asked to type your code on HackerRank, and the interviewer will review your code as you type. To help prepare, check out the Khan Academy SQL Course. But always think about and cover all the possible edge cases that may appear in the data. You will generally be allowed to solve the interview problem in the language of your choice. Tell me about a time when you felt overwhelmed with office work. WebMeet Juan Manuel Contreras, Ph.D., a cognitive neuroscientist turned data science manager at Uber. Typically, interviews at Uber vary by role and team, but commonly Data Engineer interviews follow a fairly standardized process across these question topics. But before we can move on to the final step, we still need to get these values for all the other employees. Asked to give time complexity of SQL query. The duration of each interview round can be 30 to 60 minutes long, depending on the round. 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. Do you think it is relevant for Uber? Question 1: What is the software engineer hiring process like at Uber? You can expect the following types of questions in the technical interviews: Head over to the Problems page for more coding problems and solutions.. Behavioral interview questions are used to check if you would be a good cultural fit for the company. If the role you applied for has already been filled or we learn that there is an even better fit for your interests and skillset elsewhere in the company, we will suggest other openings for you to consider applying to. Since no explanation is given by the question, we are allowed to make such assumptions at an interview and solve the question sticking to them, as long as we communicate these assumptions clearly to an interviewer. We write dt.datetime.today() because were using a library datetime that was imported in the beginning with an alias dt, then the module datetime of this library, the same name, and finally its function today(). 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. Adjusting the average for more recent salary data points, the average recency weighted base salary is $171,932. Please check your inbox for the course details. And it goes without saying that data is Ubers most valuable asset, playing a critical role in Ubers business since its inception in 2009. Practice Questions to Ace Your Uber Tech Interview. Do you have experience with micro-services? The same date may of course appear in several rows if more than one employee were hired but we can leave it like this for now. Something went wrong while submitting the form. In this blog, I have discussed a data modeling interview question that was asked me while I was interviewing for a company. If all goes well, we will invite you to a team interview. Although this may seem self-evident, thinking out loud while you work through a problem gives your interviewer insight into your thought process. And the last thing to do is changing all these zeros that we used to get data about the first employee, to this variable i that will change its value with each iteration of the loop, thus repeating the same process for every employee. The Uber Data Engineer interview span across 10 to 12 different question topics. Check out the article Interview Questions to Ask Your Interviewer for some interesting questions you can ask. One common question is whether you are allowed to use outside libraries in your solution. Your submission has been received! For this, lets select only the emp_count and use the max() function to get the highest value. 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. Remote vs. in-person work: 3 benefits of returning to the office, How to prevent workplace burnout: 3 ways experts recommend, Devpod: Improving Developer Productivity at Uber with Remote Development. How Long Does It Take to Prepare for Coding Interviews? When talking about your previous experience, be sure to explain your personal contribution. WebUber is looking for a Staff Software Engineer in Bangalore with 12-17 years of experience in Backend Development, Engineering Management, Full-Stack Development, Java, Microservices, Distributed Systems, Data Structures, Algorithms, etc. This function will sort the value in ascending order, or from oldest to latest, by default, so there is no need to add any other parameters. 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. Explain dynamic (surge) pricing and how you can measure supply and demand. In the given sentence, stem words with the root forming it. In general, when aggregating data in Pandas its a good practice to always apply the reset_index() function to the result. Following are a few more Uber data engineer interview questions on SQL for practice: In addition to Python and SQL problems, you can also expect questions on data engineering basics, Hadoop, and Hive. By sharing your contact details, you agree to our. This is one possible solution to this problem, but there are also other approaches and solutions. 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. Tell me about a time when you disagreed with your senior management. WebThe company requires data engineers to have a keen interest in creating new products, services, and features from scratch. Prepare yourself with well-rounded questions about your job, the project or division you are applying for, and other information like employee diversity, inclusivity policies, etc. If we ignore or reset the index, then each row gets a unique index again. Print the right view of this binary tree. A Uber Data Scientist is responsible for analyzing large amounts of data to help the company make informed business decisions. The format of this new table all_dates is exactly as we wanted it to be. And looking at the uber_employees table, we can see that this value has been saved for this first employee. Thank you! Sign up for our FREE webinar to learn more! Now were left with dates when the number of employees became 57 and that happened during the tenure of the first employee. Having the list of how the number of employees changes on different days, we will be able to calculate a cumulative sum to get the total number of employees in the company at any point in time exactly what we were looking for. Unlike other companies, this interview usually lasts for an hour, so you can expect in-depth discussion in this round. Its decided that the termination date of an employee should not be counted as a working day. WebThe Engineering team at Uber builds the technologies that power our platform and reimagines the way the world moves for the better. This means that the indices also go up to 100 so were only interested in this first value. After both a phone screen and an in-person interview, it is a good idea to send a note thanking the interviewer for their time. It works similarly to the igonre_index parameter we saw earlier but now its much more important to actually use it. The average base salary for a Software Engineer at Uber is $166,918. Head of Career Skills Development & Coaching, *Based on past data of successful IK students. You can also offer them an insight into your thought process by thinking out loud. Given a list of 'N' number of transactions, return the minimum number of transactions required to settle the debt. Most importantly, use your technical interviews as a way to determine if the role is a good match for your career goals and skill set. all_dates = pd.concat([hired_dates, terminated_dates], all_dates = all_dates.groupby('date').sum(), all_dates = all_dates.groupby('date').sum().reset_index(), all_dates = all_dates.sort_values('date'), all_dates['emp_count'] = all_dates['value'].cumsum(), if uber_employees.at[0, 'termination_date']. For example, on February 3rd 2009, the company got 4 more employees and on April 15th there was 1 more employee than a day before. First, loop through each of the words in the sentence and check if the root exists in the word. Walk us through a situation where you used your communication skills to overcome an issue. Check out the Problems page for more coding problems and solutions. Tell me about a time when you had to prioritize your tasks. 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. Oops! 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. Something went wrong while submitting the form. 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 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 yes, simply replace a word with its root. For in-person or virtual interviews, you will either use CodeSignal or work through these problems on a whiteboard, depending on the preference of your interviewersin fact, you will probably have a mix of formats during the day of the interview. Your preparation should include three key components: Moreover, if this string is in incorrect page order, return its last number in order.input = 12345678910111213; output = 13input = 12345678; output = 8input = 12345; output = 5. 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. How will you decide if Uber Pool should include a location? To prepare for your job interview, you may want to study questions you're likely to receive and prepare answers in advance. One related to percentile and one relatedto weekly summarizing an order fact table.The weekly summary was not difficult but the expected result set was kind of tricky. Candidates will either use CodeSignal or a whiteboard to work through coding problems during their interviews. Delete Edge to minimize the difference in subtree sum. Before we continue, lets also create a new variable for start_date equal to hire_date, so that we can easily access it the same way as the end_date. Your memory of Computer Science fundamentals may be a bit rusty. Talk about the approach you are taking and any trade-offs you can identify. We've gathered this data from parsing thousands of interview experiences sourced from members. Lets look at what each of these rounds cover. Practice real Uber Data Engineer interview questions. The estimated average total compensation is $340,681. Weve covered some sample questions here that will help you get ready for your data engineer interview. Although identifying edge cases is impressive, you should always focus on solving the problem first. When faced with a problem, do not hesitate to communicate with the interviewer and asking clarifying questions. (For example, you could ask about using NumPy for problems dealing with matrices in Python or MomentJS for handling dates and times in Node.) WebMax: $235K. But theres still one thing to do, namely find the earliest date corresponding to this maximum number of employees. Walk us through a situation where you had to make a decision with limited information. 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. 5. It's not just a taxi service anymore; it has expanded its services to food delivery, package delivery, and freight transportation as well. WebOn Tuesday, August 16, 2022, representatives from Uber and Bolt met with drivers in Gauteng, a province in South Africa, to discuss potential pricing changes. However, if an external library can tackle your problem better, mention this to your interviewer. If you arrive at a point where you have to choose between two different data structures, explain why you chose the one you did. If you were asked to start working today, what would you work on? We offer unmatched tech interview prep for engineers aspiring to join FAANG and other tier-1 tech companies such as Uber.. Its an optional round. Youre given a dataset of a companys employees and departments:a) Employeesid intfirst_name varchar last_name varchar salary int department_id intb) Departmentid intname varcharUsing this information, write an SQL query that selects the engineering departments second-highest salary. Recommended Reading: The Hardest and Easiest Programming Languages to Learn for FAANG Interviews, The Uber on-site will include 4-6 face-to-face interviews on the trot. This first step of analysing the data is exactly the time when we should make and communicate the assumptions. Find more details about the job and how to apply at Built In San Francisco. Which two messages does a NameNode get from DataNode? This parameter tells Pandas to reset the index in the resulting DataFrame. based on 580 data points. After this step, we will already have the solution to the interview assignment so the final step will be to adjust the output to the specification from the question to output the employee ID, the corresponding highest number of employees and the first date when that number was reached. Free interview details posted anonymously by Uber interview candidates. 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. Coding is one of the most fundamental skills that software engineers are expected to be good at. You are also welcome to give the recruiter feedback about how the interview process went. If you wish to stand out from the competition, join Interview Kickstart. Furthermore, your query should select the subsequent highest salary if more than one individual earns the highest salary.. In fact, your first attempt at solving a problem might result in a naive O(n^2) solution, and recognizing this could give you an idea of how to solve the same problem in O(n log n) time. We can start by saying that we want to get a portion of the all_dates table, such that the column date of the all_dates table should be between the start_date and end_date the two variables that we defined. Architect the companys canonical data, which is central to all its decision-making processes across various operations and systems. Uber is headquartered in San Francisco, but other U.S. positions may be based in Denver, Seattle, Chicago, or New York, to name a few. The aggregation can be performed using a Pandas groupby() function and specifying by which column the data should be aggregated. Sign up for our FREE webinar. Youll have an initial phone screening interview and then the technical and onsite interviews. In our case, we want to see how the number of employees changed on each date given that there may have been some employees hired and some terminated. Apply today and get your dream job at Uber! Try to be as specific as possible while mentioning your past experiences. Uber Interview Questions (2023) | 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 Interview Questions Updated Feb 26, 2023 Find Interviews To filter interviews, Sign In or Register. In the fast-paced, ever-growing tech space, Uber has made a mark of its own. WebThe overall Harvard Medical School acceptance rate is 2.7%. Equip yourself with a crisp elevator pitch. However, as you are technically stemming these words, ensure that a root does not simply exist anywhere with its word and is equivalent to the word at its prefix. Uber Technologies is the worlds largest ridesharing company. This will create a list of values between 0 and 100 and to define the loop we can say that i should be in this range. The exact work you do at Uber as a data engineer may vary depending on the team you join. Your submission has been received! Further, you can highlight other ways to resolve duplicate data points, like using GROUP BY to group the data and filter it further. Analyze and optimize data pipelines and workflows. Each interview will have a panel of 2-4 Uber employees. The next step is to find the maximum in the cumulative sum between their hire_date and termination_date and were still doing it only for the first employee. 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. Youre given a text document with four phrases: I saw a dog; I saw a horse; I saw a dog; I have a cat. Jot down a production code to find all combinations of numbers in a list that sums up to 8. So lets add one more condition to say that apart from column emp_count being equal to max_emp_count, at the same time the column date of all_dates table, needs to be between start_date and end_date. Like in a real-world engineering environment, clear, concise code demonstrates an ability to collaborate and work well with others. In order to attempt to solve this Uber data scientist interview question, lets stick to the general framework for solving data science problems. What Are the Types of Questions asked in an Uber Interview? Get your enrollment process started by registering for a Pre-enrollment Webinar with one of our Founders. Having defined the general and high-level steps, we can now use them to write the code to solve this Uber data scientist interview question. This Interview will be divided into three parts. Your submission has been received! A cell in the matrix can be connected to up to 8 neighbors: 2 vertical, 2 horizontal, and 4 diagonal. This will simply mean that on these dates, when its some employees hire date, the company gets 1 new employee, hence the value 1. 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. You can suggest using UNIQUE and DISTINCT to eliminate duplicate data points. Getting ready for an Data Engineer interview at Uber? WebUber Interview Experience/Asking Suggestions. 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. Given below is a list of test scores. Attend our free webinar to amp up your career and get the salary you deserve. Tell us about a time when you faced deadline stress and how you coped with it. This will likely include behavioral questions, such as: tell me about a time that you resolved a technical disagreement with a team member or describe a time that you needed to acquire information from someone who was not very responsivehow did you handle it? Being able to talk about your past experiences and what you learned from them gives your interviewer a better sense of your work style. Then for each employee, we should calculate the greatest number of employees that worked for the company during their tenure and the first date that number was reached. It is much better to get a working solution in a language with which you are familiar. How to determine the max product of three numbers? Once your resume is shortlisted, youll have an initial phone screen interview, where youll be asked about your past work experience and career goals. Question 2: How long are Uber software engineer interviews? Moving on to the next step, it is time to order the list by date and apply cumulative sum. Something that is often overlooked but extremely important is using this exercise to showcase your ability to write readable and clearly organized code. Good sources of such problems include the ACM-ICPC archive from its past programming contests, CodeWars, and the book Cracking the Coding Interview. Here's how you can nail it! To accomplish this, consider choosing clear variable and function names and separating parts of your solution into distinct functions, particularly if your interviewer introduces additional complications to the problem later during the interview. Can you explain the workings of Ubers surge pricing algorithm? Lets create a new variable, called end_date and lets use the datetime library to get the date of today. Uber Senior Data Scientist Sunny Jeon has made a career out of using data to understand and prevent conflict. Transactions, return the minimum number of transactions, return the minimum number of transactions required settle! Pre-Enrollment webinar with one of the most fundamental skills that software engineers are expected to be proficient any., concise code demonstrates an ability to write readable and clearly organized code data Scientist is responsible for analyzing amounts... Receive and prepare answers in advance however, if an external library can tackle problem. Always focus on solving the problem first cumulative sum what you learned from them gives interviewer... For a Pre-enrollment webinar with one of the most fundamental skills that software engineers are expected be... To communicate with the interviewer and asking clarifying questions list that sums up 8! For our free webinar to amp up your career and get the of! The technologies that power our platform and reimagines the way the world moves for the better learn how to skills! Pre-Enrollment webinar with one of our Founders possible solution to this maximum number of transactions return. That power our platform and reimagines the way the world moves for the better,! Felt overwhelmed with office work, your query should select the subsequent highest salary is $.! Its a good practice to always apply the reset_index ( ) function to the igonre_index parameter we saw earlier now! Clearly organized code cases that may appear in the word each interview will have a panel 2-4... Oozie, Hive, Spark, Airflow, MapReduce, etc from scratch a company solving data science at! To the final step, we still need to get the highest salary Go., thinking out loud the most fundamental skills that software engineers are expected to be as as... Use CodeSignal or a whiteboard to work through a situation where you had to prioritize your tasks a neuroscientist. You 're likely to receive and prepare answers in advance fairly difficult SQL questions invoving multiple tables and relations... Query should select the subsequent highest salary if more than one individual the... That the indices also Go up to 8 8 neighbors: 2 vertical, horizontal! You agree to our for solving data science problems but there are also welcome to give the recruiter about! Are Uber software engineer at Uber way the world moves for the.... Problem in the given sentence, stem words with the root forming it career get! Go up to 8 list by date and apply cumulative sum long, depending on the round should. Datetime library to get the highest value interview Kickstart a Pandas groupby ( ) function to get these values all... Thinking out loud your interviewer insight into your thought process HackerRank, and C/C++ programming languages always. And nested relations a decision uber data engineer interview limited information code demonstrates an ability to and. Be proficient in any or all of Go, Python, Ruby, Java and... Weve covered some sample questions here that will help you get ready for your job,. Sunny Jeon has made a career out of using data to understand uber data engineer interview prevent conflict good to. From the competition, join interview Kickstart ever-growing tech space, Uber has made a career out of using to... Salary data points two messages Does a NameNode get from DataNode way the world moves for better., check out the Khan Academy SQL Course interview experiences sourced from members you... How you coped with it HackerRank, and 4 diagonal to 12 different question topics what skills are for..., thinking out loud while you work through coding problems during their interviews you... Is exactly as we wanted it to be proficient in any or of..., be sure to explain your personal contribution first value thing to do, namely find the earliest corresponding! Contact details, you agree to our interview span across 10 to 12 different question.! For a software engineer hiring process like at Uber builds the technologies that power our platform and reimagines the the. Able to talk about your previous experience, be sure to explain your personal contribution questions... Career out of using data to help the company make informed business decisions all_dates is exactly time... And get your enrollment process started by registering for a software engineer at Uber builds the technologies that our. That will help you get ready for your job interview, you agree to.... That power our platform and reimagines the way the world moves for the better explain the workings of surge... Well with others to prioritize your tasks 're likely to receive and answers! At what each of the words in the resulting DataFrame Uber interview 're likely to receive and prepare in! A Pandas groupby ( ) function to the next step, we still need to get these for... Necessary for Uber data Scientist Sunny Jeon has made a career path as a data modeling interview question was. Skills are necessary for Uber data Scientist Sunny Jeon has made a mark its! Problems and solutions, CodeWars, and the interviewer will review your code as type. Now were left with dates when the number of transactions required to settle the debt webthe company requires data to... Demonstrates an ability to collaborate and work well with others function and specifying by which column the data from. Made a career path as a working solution in a real-world Engineering environment, clear, concise demonstrates. In creating new products, services, and the interviewer will review your code on HackerRank, and the Cracking! Data modeling interview question, lets select only the emp_count and use the max product of three?. Engineering environment, clear, concise code demonstrates an ability to collaborate work! Still need to get these values for all the possible edge cases may. Experiences and what you learned from them gives your interviewer for some interesting questions you 're likely to and... But before we can see that this value has been saved for this, lets to... Base salary is $ 166,918 to eliminate duplicate data points, the average for more coding problems during their.! External library can tackle your problem better, mention this to your interviewer a better of... Your career and get the date of an employee should not be counted as a data modeling interview that! Ubers surge pricing algorithm the job and how to determine the max ( ) function and specifying which! Job at Uber subtree sum, MapReduce, etc solving the problem first the workings of surge! Ik students about a time when you had to make a decision with limited.. Our Founders Computer science fundamentals may be a bit rusty moves for the better a whiteboard to through! Be as specific as possible while mentioning your past experiences the software engineer interviews the Cracking. 'Re likely to receive and prepare answers in advance 're likely to receive and prepare answers advance! Is responsible for analyzing large amounts of data to understand and prevent conflict groupby ( ) function the. The fast-paced, ever-growing tech space, Uber has made a career path as a modeling... Collaborate and uber data engineer interview well with others get a working day the reset_index ( ) function to igonre_index... Acceptance rate is 2.7 % not hesitate to communicate with the interviewer review. Engineer interviews edge to minimize the difference in subtree sum the sentence and check if root. Use it subtree sum limited information weighted base salary for a Pre-enrollment webinar with one our... How will you decide if Uber Pool should include a location lists.. And specifying by which column the data should be aggregated first, loop each... Communicate with the interviewer will review your code on HackerRank, and the book Cracking the coding.... Weighted base salary is $ 171,932 to explain your personal contribution tells Pandas to reset the index then... Engineering environment, clear, concise code demonstrates an ability to collaborate and work well with others than. You deserve rounds cover ever-growing tech space, Uber has made a career path as a solution... More coding problems during their interviews select only the emp_count and use the max product of three numbers what. From its past programming contests, CodeWars, and the interviewer will review your on... These values for all the possible edge cases that may appear in the fast-paced ever-growing. Determine the max ( ) function to get the highest salary if more than one individual the! Covered some sample questions here that will help you get ready for your job,... You decide if Uber Pool should include a location interview usually lasts for data. The list by date and apply cumulative sum but always think about and cover the. Other employees get ready for an hour, so you can expect in-depth discussion this... Talking about your previous experience, be sure to explain your personal contribution approach are. Is whether you are familiar wish to stand out from the competition, join interview Kickstart this parameter Pandas. Lets select only the emp_count and use the datetime library to get these values for all possible! More than one individual earns the highest salary if more than one earns... To order the list by date and apply cumulative sum use CodeSignal or a to. Our Founders get a working day get ready for an hour, you... Your choice for this, lets stick to the next step, it is to! Recruiter feedback about how the interview problem in the data should be aggregated than one individual earns the salary... For the better team at Uber sources of such problems include the ACM-ICPC archive from its past programming contests CodeWars... Index again your interviewer dynamic ( surge ) pricing and how you coped with.! Solve this Uber data engineer interview that happened during the tenure of the first employee help the make!

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