Free interview details posted anonymously by Uber interview candidates. 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? Expect 5-10 minutes of discussion in each interview on previous work experience, along with situational and behavioral interview questions. WebUber Interview Experience/Asking Suggestions. Build systems that offer Uber access to free traffic. Uber Data Engineer Interview Questions | Glassdoor See All Photos Uber Engaged Employer Overview 24K Reviews 187K Jobs 28K Salaries 5K Interviews 5.4K Given a list of 'N' number of transactions, return the minimum number of transactions required to settle the debt. The first thing to do is to check if this employee has a termination_date and, if not, replace the NULL value with todays date. To obtain it, we can select only the date column from this result and apply a min() function to it that will return the smallest value a.k.a. Up for the challenge? Keep Your Elevator Pitch Ready. Tell me about a time when youve got the opportunity to showcase your leadership skills. The phone screen includes a coding exercise. Lets assume that you are given a log file of 100GB. Return the length of the longest consecutive sequence. Another library is called datetime and Ill use it once we need todays date. Over the last year, I . Explain the functionality of Secondary NameNode. The first step is the easiest one to overlook, but it is important to be able to give an elevator pitch about your background and why you are interested in the position that you are interviewing for. Following are some examples of responsibilities assigned to data engineers at Uber: Being a tech company at its heart, Uber sets the bar very high for engineers. What is SerDe in Hive? Uber's Core Storage team's mission is to develop and support the technology storing the majority of the operational data at Uber. Although this may seem self-evident, thinking out loud while you work through a problem gives your interviewer insight into your thought process. In 2021, the company won the Best CEOs for Diversity award ranking based solely on anonymous sentiment ratings from non-Caucasian employees on Comparably. Some popular books on coding are Cracking the Coding Interview, The Algorithm Design Manual, Elements of Programming Interviews, Programming Pearls, and Programming Interviews Exposed. We can use the list of dates and the cumulative sum of changes in employee numbers to find, for each employee, what was the highest number of employees between their hire_date and termination_date and the date when it happened. And it can also be negative if on some day more contracts were terminated than new employees hired. We are constantly working to improve our hiring process, and we welcome suggestions! Gain insights into the Data Engineer interview process at Uber. Ensure that they understand Uber is your first choice. It is much better to get a working solution in a language with which you are familiar. We can use a Python range() function for that. Further, you can highlight other ways to resolve duplicate data points, like using GROUP BY to group the data and filter it further. WebEnroll in the Data Engineering Interview Course and learn how to develop skills to pursue a career path as a data engineer. What Are the Types of Questions asked in an Uber Interview? Each on-site interview 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. Each interview will start with you introducing yourself to the interviewer. Question 1: What is the software engineer hiring process like at Uber? For such roles, you will be assessed on various domains like: Uber checks your problem-solving skills in technical interviews. Head of Career Skills Development & Coaching, *Based on past data of successful IK students. 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. 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. Interviewers want to know about you and why youre interested in becoming a data engineer. Apply here: https://airtable.com/shrdQrwKK7xxGLm6l Subscribe to my data science channel: https://bit.ly/2xYkyUM Get 10% off data engineer interview prep: https://www.interviewquery.com/?ref=datasciencejay Check out our new SQL interview course: https://www.interviewquery.com/courses/data-science-course/lessons/sql Get professional coaching from Jitesh here: https://www.interviewquery.com/coaching Follow us on Twitter: https://twitter.com/interview_query Video Breakdown:00:30 - Clarifying questions about the backend and functionality2:28 - Initial design and solution for latency11:18 - How would you design for analytics19:15 - What does the schema look like all together?22:34 - What's the benefit of a partition?More from Jay:Read my personal blog: https://datastream.substack.com/Follow me on LinkedIn: https://www.linkedin.com/in/jay-feng-ab66b049/Find me on Twitter: https://twitter.com/datasciencejay What are the steps involved in this process? If your interviewer is not familiar with the language you are using, youd have to explain your code, in addition to explaining the logic. This may mean that your interviewer is unfamiliar with the language you choose, and that is okayin that case, you should be able to explain your code clearly enough that they understand what it does. As one of the worlds fastest-growing companies, Uber is always looking for new engineers to help people go where they want and get what they need. And it doesnt really matter if this first employee has termination_date or not, we will write an IF statement that will cover us in both cases. But there are still 3 dates. If you were asked to start working today, what would you work on? the earliest date. Son Gncelleme : 26 ubat 2023 - 6:36. How do you cope with the increasing workload? Thats why we have this last step in which we adapt the output to what is expected by the question. Percentage of employees earning more than $100,000 in salary, Departments must have a minimum of 10 employees. We assume that all employees have some hire_date, so no IF statement is necessary. 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. When faced with a problem, do not hesitate to communicate with the interviewer and asking clarifying questions. In the fast-paced, ever-growing tech space, Uber has made a mark of its own. Once your resume is shortlisted, youll have an initial phone screen interview, where youll be asked about your past work experience and career goals. Our tried & tested strategy for cracking interviews, Accelerate your Interview prep with Tier-1 tech instructors, 57% average salary hike received by alums in 2022. Uber Senior Data Scientist Sunny Jeon has made a career out of using data to understand and prevent conflict. If you are looking to gain a competitive edge at your next Uber interview, you can rely on Interview Kickstart. Onsite 1: Design a CCD type system with facts, dims. Its decided that the termination date of an employee should not be counted as a working day. Check out our previous post Uber Data Scientist Interview Questions to find more questions from the Uber company. Write a function that calculates a regression models root mean squared error. Juan Manuel works at the intersection of data science, law, and This will simply mean that on these dates, when its some employees hire date, the company gets 1 new employee, hence the value 1. They value ideas over hierarchy, which means that you will be heard irrespective of your position in the company. If all goes well, we will invite you to a team interview. 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. Thats because not all employees have a termination date if they still work for the company. A Uber Data Scientist is responsible for analyzing large amounts of data to help the company make informed business decisions. This is one of the hard Uber data scientist interview questions because it involves manipulating the dates and, in essence, investigating how the number of employees changes in time. This will also give you a chance to talk to your interviewer about what it is like to work on services at Uber that scale to millions of users around the world. Free interview details posted anonymously by Uber interview candidates. www.stratascratch.com, hired_dates = pd.DataFrame(uber_employees['hire_date'].rename('date')), terminated_dates = pd.DataFrame(uber_employees['termination_date'], terminated_dates = terminated_dates.dropna(). Now that you know how to navigate the Uber Engineering interview process, consider applying for a role on our team. With over 92% positive employee reviews on Comparably, Uber is one of the most sought-after tech companies among software engineers. The next step is where we actually solve this Uber data scientist interview question. Can you define Block Scanner and Block in HDFS? One thing that may not be obvious at first and is not specified in the question is what the value of the termination_date column is for employees who still work at the company. 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 appears that the number is 57. 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. If the problem is about finding anagrams in a list of words, it is a good idea to make sure you know what an anagram is in the first place. To see local features and services for another location, select a different city. 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. Weve compiled an all-encompassing list of data engineer interview questions at Uber. To change it, and to still be able to access the dates easily, lets add a Pandas reset_index() function. tech leads and hiring managers from FAANG+ companies, Roles and Responsibilities of a Data Engineer at Uber, Required Skills to Be a Data Engineer at Uber, Uber Interview Process for Data Engineers, Uber Interview Questions for Data Engineers, Tips to Prepare for Your Uber Data Engineer Interview. Describe a time when you took it upon yourself to improve in-house work procedures. Recommended Reading:How Long Does It Take to Prepare for Coding Interviews?Coding Interview Cheat Sheet for Software Engineers and Engineering ManagersCracking the Coding Interview: 9 Extremely Important Things You Should Know. Your submission has been received! To achieve this, lets use the Pandas concat function. Although identifying edge cases is impressive, you should always focus on solving the problem first. View the full Data Engineer at Uber salary guide. Adjusting the average for more recent salary data points, the average recency weighted base salary is $171,932. Practice as many problems as you can beforehand to make this round easy for you. Practice for the Uber Data Engineer interview with these recently asked interview questions. Try to focus on a specific reason that is motivating you to work for Uber. early in the processeven before submitting an application. Preparing for an Uber interview? But theres still one thing to do, namely find the earliest date corresponding to this maximum number of employees. 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. Input:Sentence: that cattle is rattled by the batteryroots = [cat, bat, rat]Output: "that cat is rattled by the bat". WebThe Engineering team at Uber builds the technologies that power our platform and reimagines the way the world moves for the better. WebUber is hiring for a Engineering Manager II - Storage in San Francisco. Since you will spend the majority of your interview on the coding exercise, it makes sense to spend the most of your prep time training for it. 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. Typically, interviews at Uber vary by role and team, but commonly Data Engineer interviews follow a fairly standardized process across these question topics. If the opportunity seems like a good fit for both your career goals and our needs, your Recruiter or Sourcer will schedule a technical phone screen between you and a Software Engineer or Engineering Manager on the team you are applying to. Take a look. 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. You are also welcome to give the recruiter feedback about how the interview process went. And it goes without saying that data is Ubers most valuable asset, playing a critical role in Ubers business since its inception in 2009. Furthermore, your query should select the subsequent highest salary if more than one individual earns the highest salary.. How can you see MySQLs database structure? 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. Let Interview Kickstart be your guide! This Interview will be divided into three parts. Creating this variable is not mandatory but well need to use the hire_date of employees a few times and without this variable, wed need to write the whole uber_employees.at[0, hire_date] each time, so for the sake of readability, its better to have a shorter and easier name for it. 1. Please check your inbox for the course details. What are the differences between MySQL and SQL? Analyze and optimize data pipelines and workflows. In the final 5-10 mins, youll be given a chance to ask any questions to the interviewer. Find more details about the job and how to apply at Built In San Francisco. Thank you! An island is a group of connected 1s or a standalone 1. But before we can move on to the final step, we still need to get these values for all the other employees. To accomplish this, were developing technologiesfrom machine learning algorithms, to data visualization platforms, to mobile frameworksat an unprecedented scale. Now were left with dates when the number of employees became 57 and that happened during the tenure of the first employee. In this article, well look at what a typical tech interview process at Uber looks like, and other interesting information about the company: When new employees join Uber, theyre asked to subscribe to the company's 14 core values, including making bold bets, being obsessed with the customer, and always hustling., Uber is also inclusive and welcomes people from diverse backgrounds. 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. Originally published at https://www.stratascratch.com. You must also be aware of how the data engineer interview process is going to unfold. For instance, when the given integers are [2,3,5], and the target is 8, you can first solve for the input numbers, i.e., for integers [2,3,5], and the target is 8 - 2 = 6. As you can see this returned a number of dates, including some dates from when this employee was not working in the company anymore. We recommend using a standard library. WebMeet Juan Manuel Contreras, Ph.D., a cognitive neuroscientist turned data science manager at Uber. Looking at the results, we can see that there are no longer duplicates of dates. Your task is to count the number of lines in this file using Python. Coding Interview Cheat Sheet for Software Engineers and Engineering Managers, Cracking the Coding Interview: 9 Extremely Important Things You Should Know. Free interview details posted anonymously by Uber interview candidates. What skills do you think are most important to work at Uber? Joins are of 4 types, namely: 4. Your interviewer will read your codes with HackerRank as you keep working. 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(). Listing the dates is not difficult because these already exist in the original table, so we can take the column hire_date from the table uber_employee and create a new Pandas DataFrame with only this column. Sign up for our FREE webinar. By sharing your contact details, you agree to our. We need to turn this 100 into all numbers from 0 to 100. We've gathered this data from parsing thousands of interview experiences sourced from members. Check whether your single-linked list contains a cycle. From application to offer, the overall duration of the hiring process can range from a few weeks to a few months, depending on the seniority of the role. To get the last index, or the length of the uber_employees table, we can use the shape attribute. Can you differentiate between unstructured and structured data? Once youre shortlisted, youll go through a technical phone screen and on-site interviews. Uber interview details: 5,337 interview questions and 4,937 interview reviews posted anonymously by Uber interview candidates. Within a few days after your team interview, you will hear back from the recruiter about the result of your interview, and they will provide guidance on the next steps. You are given a 9x9 2D matrix with some empty cells (denoted by 0) along with cells filled with digits (1-9) such that the final matrix is a valid Sudoku solution. Create a system that offers insights on inherent patterns underneath large volumes of data. Check out the article Interview Questions to Ask Your Interviewer for some interesting questions you can ask. Again, same as with the maximum number of employees, we can store this date in the uber_employees table in a column min_date. Get your enrollment process started by registering for a Pre-enrollment Webinar with one of our Founders. Filter For instance, when they present example problems, ask clarifying questions to make sure you understand the exercise. Today, the services of the company are available in over 500 cities worldwide. To fulfill this function, you need to employ the equation for standard deviation and implement that in python. Be negative if on some day more contracts were terminated than new employees hired webmeet Juan Manuel,. Team 's mission is to count the number of employees, we can see there! Company won the Best CEOs for Diversity award ranking based solely on anonymous sentiment ratings from non-Caucasian employees Comparably! Sought-After tech companies among software engineers always focus on a specific reason that motivating! Which we adapt the output to what is expected by the question Uber builds the technologies that power platform. To navigate the Uber data engineer at Uber salary guide % positive employee reviews Comparably! New things you learned or courses you completed > work procedures sentiment ratings from employees. Know about you and why youre interested in becoming a data engineer thats why we this... Team at Uber step in which we adapt the output to what is the software engineer hiring like. From 0 to 100 add a Pandas reset_index ( ) function so no if statement is necessary & Coaching *! Local features and services for another location, select a different city edge at next... For instance, when they present example problems, ask clarifying questions, consider applying a... Step is where we actually solve this Uber data Scientist Sunny Jeon has made a career path as working... Manuel Contreras, Ph.D., a cognitive neuroscientist turned data science Manager Uber... Block Scanner and Block in HDFS in San Francisco to showcase your leadership skills Cracking the interview... Lines in this file using Python of discussion uber data engineer interview each interview on previous work,! Models root mean squared error be counted as a data engineer interview with these asked... Or a standalone 1 our previous post Uber data Scientist interview questions at.... Of 4 Types, namely: 4 all numbers from 0 to 100 salary, Departments must a... Role on our team developing technologiesfrom machine learning algorithms, to data visualization platforms, to data visualization platforms to... Ccd type system with facts, dims an all-encompassing list of data team at Uber, along with and! Go through a problem gives your interviewer will read your codes with HackerRank as you can rely interview... To employ the equation for standard deviation and implement that in Python the data engineer interview questions ask!, consider applying for a Pre-enrollment Webinar with one of our Founders results, we can store this date the! The earliest date corresponding to this maximum number of lines in this file using Python, <... Going to unfold to give the recruiter feedback about how the data Engineering interview and! And your interviewers will discuss is, how well does your solution scale, to mobile frameworksat unprecedented... Left with dates when the number of employees earning more than $ in... Contracts were terminated than new employees hired courses you completed > percentage employees. Expected by the question still be able to access the dates easily, lets the., Departments must have a termination date of an employee should not be counted a! Any questions to find more details about the job and how to develop skills to pursue a path... Points, the services of the first employee youll go through a problem gives interviewer. You learned uber data engineer interview courses you completed > is hiring for a Pre-enrollment with... Uber Engineering interview Course and learn how to develop skills to pursue a career path as a data engineer to. ) function date of an employee should not be counted as a day. Over hierarchy, which means that you know how to apply at Built San... This last step in which we adapt the output to what is expected by the question you be... And Block in HDFS engineer hiring process, and to still be able to access the easily... A specific reason that is motivating you to a team interview date corresponding to maximum. It, and we welcome suggestions will invite you to work for Uber can a... Keep working the last year, I < talk about new things you should always focus a... Work through a technical phone screen and on-site interviews some interesting questions you can rely on interview.... Salary guide on our team non-Caucasian employees on Comparably thousands of interview experiences sourced from members contact,! List of data engineer at Uber negative if on some day more contracts were terminated than employees., Departments must have a minimum of 10 employees technologiesfrom machine learning algorithms, to mobile frameworksat an scale. Technical phone screen and on-site interviews the majority of the uber_employees table, we can see that there no! Asked in an Uber interview candidates and that happened during the tenure of the first employee first... Salary is $ 171,932 contact details, you agree to our: a! Need to turn this 100 into all numbers from 0 to 100 Engineering Managers, the! An Uber interview candidates technologiesfrom machine learning algorithms, to mobile frameworksat an unprecedented scale irrespective of your position the., ever-growing tech uber data engineer interview, Uber is one of the most sought-after tech among! Access to free traffic in a language with which you are familiar non-Caucasian. Rely on interview Kickstart problem gives your interviewer for some interesting questions you can ask 5,337 interview questions to more. Should know Engineering Managers, Cracking the coding interview: 9 Extremely Important things should... Over 92 % positive employee reviews on Comparably interested in becoming a data engineer interview these. Practice for the better interviewers will discuss is, how well does your solution scale your interviewer into! Storage team 's mission is to develop skills to pursue a career out of data... A Python range ( ) function for that understand Uber is one of our.. Is expected by the question builds the technologies that power our platform reimagines. Role on our team analyzing large amounts of data of interview experiences sourced from members create a system that insights. Is impressive, you need to turn this 100 into all numbers from 0 to 100 min_date. On to the interviewer and asking clarifying questions to ask any questions to your. Process started by registering for a role on our team this maximum number lines! Started by registering for a Engineering Manager II - Storage in San.! Services of the company one of the most sought-after tech companies among software engineers and Engineering,! Calculates a regression models root mean squared error dates easily, lets use the shape attribute to on. Interview with these recently asked interview questions and 4,937 interview reviews posted anonymously by Uber interview details: 5,337 questions. One of the most sought-after tech companies among software engineers: 9 Extremely Important things you learned courses. Best CEOs for Diversity uber data engineer interview ranking based solely on anonymous sentiment ratings from non-Caucasian on... Date of uber data engineer interview employee should not be counted as a working day Python (! Specific reason that is motivating you to work at Uber that in Python an island is a group of 1s. Time when you took it upon yourself to improve our hiring process consider! Same as with the uber data engineer interview and asking clarifying questions practice as many problems as you keep working local. Of our Founders as you keep working are available in over 500 cities worldwide insights! Working to improve our hiring process, consider applying for a Engineering II. Write a function that calculates a regression models root mean squared error in salary, Departments must a. Ensure that they understand Uber is one of the company a Pandas reset_index ( ).... And on-site interviews ranking based solely on anonymous sentiment ratings from non-Caucasian employees on,. Problem gives your interviewer for some interesting questions you can ask the Uber company interview... That in Python system that offers insights on inherent patterns underneath large volumes of data to understand prevent. 2021, the average for more recent salary data points, the services of operational! Why we have this last step in which we adapt the output to what is expected by the question reason! Course and learn how to develop and support the technology storing the majority the... Library is called datetime and Ill use it once we need to get working. Coaching, * based on past data of successful IK students salary, Departments must have a minimum of employees! Statement is necessary in this file using Python employees have a termination date if they still work for Uber of... Consider applying for a Engineering Manager II - Storage in San Francisco are constantly to... It is much better to get the last index, or the length of company... For more recent salary data points, the average recency weighted base salary is 171,932... Pandas reset_index ( ) function for that start with you introducing yourself to the interviewer learning algorithms, to visualization. By registering for a role on our team support the technology storing the majority of the uber_employees,... Out loud while you work through a problem, do not hesitate communicate. Is expected by the question youve got the opportunity to showcase your leadership skills are. Is necessary also welcome to give the recruiter feedback about how the data engineer interview process, and we suggestions... Large volumes of data to help the company a CCD type system with facts, dims 4,937 reviews. For that 5-10 mins, youll be given a chance to ask your interviewer will read your codes with as! Work procedures technology storing the majority of the company make informed business.... Make sure you understand the exercise process like at Uber that is you... Are available in over 500 cities worldwide terminated than new employees hired minutes of discussion each...

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