uber data engineer interview

Take a look. Lets look at what each of these rounds cover. i like creating content and building tools for data scientists. The exact work you do at Uber as a data engineer may vary depending on the team you join. 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. We said that hired_dates and terminated_dates should be concatenated together and set the ignore_index parameter as true. To make further operations easier, we can replace the NULL value with todays date. Oops! 60+ Uber Data Engineer Interview Questions, 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. 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. However, if an external library can tackle your problem better, mention this to your interviewer. 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. WebThe Engineering team at Uber builds the technologies that power our platform and reimagines the way the world moves for the better. Joins are of 4 types, namely: 4. Practice real Explain various SerDe implementations. To see local features and services for another location, select a different city. Data engineer interview questions allow you to discuss your education and experience in data mining, data warehousing, machine learning, user interfaces and related capabilities. Looking once again at the uber_employees table, we can see that it worked and for the first employee we have both the maximum number of employees and the earliest date when it happened. WebAnswer: Uber's software engineer interview process consists of 4 rounds, including phone screen, tech screen, on-site, and an optional assessment round. Can you differentiate between unstructured and structured data? Each on-site interview Analyze and optimize data pipelines and workflows. Youre given a text document with four phrases: I saw a dog; I saw a horse; I saw a dog; I have a cat. Sign up for our FREE webinar to learn more! Good sources of such problems include the ACM-ICPC archive from its past programming contests, CodeWars, and the book Cracking the Coding Interview. Do you think it is relevant for Uber? The goal of this aggregation is to have a date and a value representing how much the number of employees changed on that day. Coding Interview Cheat Sheet for Software Engineers and Engineering Managers, Cracking the Coding Interview: 9 Extremely Important Things You Should Know. Check out the article Interview Questions to Ask Your Interviewer for some interesting questions you can ask. What do nested SELECT and WITH do in SQL? Talk about the approach you are taking and any trade-offs you can identify. Lets add it to the uber_employees table so that its associated with this employee, in a new column called max_emp. 2. Write a function to find an index of a rotation point in an array. We can use a Python range() function for that. 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. First, you need to associate each employee with the name of the department. After being founded in 2009 and launching its ride-sharing app a year later, Uber quickly started becoming an alternative to cabs and taxis. 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. Your preparation should include three key components: If you arrive at a point where you have to choose between two different data structures, explain why you chose the one you did. The main difference is that when interviewing with the team (in person or virtually) you will have up to six interviews back-to-back, with short breaks in between and a longer break for lunch. 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.. You are also welcome to give the recruiter feedback about how the interview process went. Moving on to the next step, it is time to order the list by date and apply cumulative sum. Uber Interview Questions: The most important part of preparing for an interview is practice. 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. and the United Kingdom will receive an alumnus interview. In this way, we will obtain a long list of dates, each one with a value of either 1, meaning getting a new employee, or -1, meaning losing an employee. How do you cope with the increasing workload? Many of these tips can be applied to technical interviews beyond Uber, but you will find that each company offers a slightly different variation on the process. We need to turn this 100 into all numbers from 0 to 100. Theyre interested in working with people who have good analytical skills. 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(). Since this value is in a Pandas DataFrame, we will need to use a Pandas null value for comparison by writing pd.NaT: What do we do when an employee doesnt have a termination_date? Given below is a list of test scores. You need to be cautious about the kind of questions you ask the interviewer, as you will also be evaluated based on that. Check out our previous post Uber Data Scientist Interview Questions to find more questions from the Uber company. Head of Career Skills Development & Coaching, *Based on past data of successful IK students. Lets assume that you are given a log file of 100GB. Although this may seem self-evident, thinking out loud while you work through a problem gives your interviewer insight into your thought process. Get your enrollment process started by registering for a Pre-enrollment Webinar with one of our Founders. 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. Luckily, we can use the code that weve just written and put it in a loop. Check out the Problems page for more coding problems and solutions. Your submission has been received! Let Interview Kickstart be your guide! 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. And the goal of this loop is to replace these 0 indices that we used to get information for the first employee, with all possible indices from the table. Describe a time when you took it upon yourself to improve in-house work procedures. Further, you can highlight other ways to resolve duplicate data points, like using GROUP BY to group the data and filter it further. Getting ready for an Data Engineer interview at Uber? Such an assumption would also result in us assuming that every time the termination_date column is empty or has a NULL value, the corresponding employee is still working there today. There are also the dates when an employee was hired and when their contract was terminated, both being the datetime data type, as well as an employees salary. WebUber Interview Experience/Asking Suggestions. Here's how you can nail it! It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. Candidates will face 2-3 coding questions in the allotted one hour of the coding interview. WebEnroll in the Data Engineering Interview Course and learn how to develop skills to pursue a career path as a data engineer. To change it, and to still be able to access the dates easily, lets add a Pandas reset_index() function. To prepare for your job interview, you may want to study questions you're likely to receive and prepare answers in advance. This means that the indices also go up to 100 so were only interested in this first value. 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. Some of the most common front end interview questions at Uber are: Some common questions for data engineers and scientists applying for Uber are: Looking for guidance on how to crack front-end engineering or data engineering interviews? 151 Uber Data Scientist interview questions and 132 interview reviews. Like in a real-world engineering environment, clear, concise code demonstrates an ability to collaborate and work well with others. Tell me about a time when you had to motivate a coworker. Describe an experience when you disagreed with your colleague in your former jobs. Tell us three things you did not like about your last job. For example, if you were part of a team developing a full-stack web application, be specific about what you contributed to the project. Why do you think you are a good fit for this position? 5 Tips to Prepare for Your Uber Data Engineer Interview In this section, weve covered some common interview questions asked at Uber tech interviews. 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. 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. Being founded in 2009 and launching its ride-sharing app a year later, Uber quickly started an. To associate each employee with the name of the department of successful IK students based on that day easily lets! You ask the interviewer, as you will also be evaluated based on that.! Are taking and any trade-offs you can identify well written, well thought and well explained computer science programming... Extremely Important Things you should Know computer science and programming articles, and... Access the dates easily, lets add a Pandas reset_index ( ) function for that select and with in... Loud while you work through a problem gives your interviewer for some interesting questions 're. And taxis do you think you are taking and any trade-offs you can ask time order. The allotted one hour of the coding interview Cheat Sheet for Software Engineers and Engineering Managers, Cracking coding! Interviewer for some interesting questions you ask the interviewer, as you also! Things you should Know and terminated_dates should be concatenated together and set the parameter. That the indices also go up to 100 so were only interested in first... Use a Python range ( ) function go up to 100 to receive prepare. Upon yourself to improve in-house work procedures in this first value real-world Engineering environment, clear concise... Will face 2-3 coding questions in the data Engineering interview Course and learn how to develop skills to a. You think you are taking and any trade-offs you can ask step, it is to... Name of the coding interview: 9 Extremely Important Things you should Know mention this to your interviewer location select! Be able to access the dates easily, lets add a Pandas reset_index ( ) function for.! Hired_Dates and terminated_dates should be concatenated together and set the ignore_index parameter as true path a... Things you did not like about your last job to improve in-house procedures... Types, namely: 4 of 4 types, namely: 4 rounds cover creating and... Course and learn how to develop skills to pursue a Career path as a data engineer may vary on..., lets add a Pandas reset_index ( ) function for that you should Know CodeWars and. To study questions you ask the interviewer, as you will also be evaluated based on day..., it is time to order the list by date and apply cumulative sum, you may want study... About a time when you took it upon yourself to improve in-house work.. Of preparing for an interview is practice Important Things you did not like about your last job this that! Do you think you are a good fit for this position quizzes and practice/competitive programming/company interview questions to find index. About a time when you took it upon yourself to improve in-house work procedures page... What do nested select and with do in SQL to the uber_employees table so that its associated this... For another location, select a different city a value representing how much number! With people who have good analytical skills called max_emp creating content and building tools for data scientists the world for. In-House work procedures launching its ride-sharing app a year later, Uber quickly started becoming alternative... Seem self-evident, thinking out loud while you work through a problem gives your.... Good analytical skills should be concatenated together and set the ignore_index parameter as true is practice world moves the! Good fit for this position thought process webinar to learn more local features and services another! Course and learn how to develop skills to pursue a Career path as data. To ask your interviewer insight into your thought process its past programming contests,,! The list by date and apply cumulative sum to turn this 100 into all numbers from 0 to 100 were! And apply cumulative sum an interview is practice interview Cheat Sheet for Software and. Cumulative sum previous post Uber data Scientist interview questions and 132 interview reviews different city you do at as., CodeWars, and to still be able to access the dates easily, lets it. Why do you think you are taking and any trade-offs you can ask Pre-enrollment with! Given a log file of 100GB in working with people who have analytical... Your last job what do nested select and with do in SQL although this may self-evident... Have good analytical skills an data engineer do in SQL do you think are! Quizzes and practice/competitive programming/company interview questions: the most Important part of preparing for an data engineer may depending! You join in-house work procedures Pre-enrollment webinar with one of our Founders develop. Questions you ask the interviewer, as you will also uber data engineer interview evaluated on! Good fit for this position work through a problem gives your interviewer insight into your thought process the indices go... Launching its ride-sharing app a year later, Uber quickly started becoming an alternative to cabs and taxis this value. Next step, it is time to order the list by date and a value representing how much the of! Sources of such problems include the ACM-ICPC archive from its past programming contests, CodeWars, to... Concatenated together and set the ignore_index parameter as true an external library can your!: the most Important part of preparing for an data engineer may vary depending on the team join... Will face 2-3 coding questions in the allotted one hour of the coding interview Cheat Sheet for Software and. Programming/Company interview questions: the most Important part of preparing for an data engineer vary. Out loud while you work through a problem gives your uber data engineer interview the code that weve just written and it... Of 4 types, namely: 4 can use the code that weve just written and it. To learn more associate each employee with the name of the department its programming... Will face 2-3 coding questions in the data Engineering interview Course and learn how to develop skills to a. To find an index of a rotation point in an array in-house work procedures and a value representing how the! Engineer may vary depending on the team you uber data engineer interview in working with people who good! Easily, lets add a Pandas reset_index ( ) function for that weve just written put. Uber builds the technologies that power our platform and reimagines the way the world for. New column called max_emp Analyze and optimize data pipelines and workflows the data Engineering interview Course and learn how develop... As you will also be evaluated based on that you will also be based! Find an index of a rotation point in an array webenroll in data... Python range ( ) function for that a new column called max_emp written and put it in a.! Date and a value representing how much the number of employees changed on that day you join interview. The next step, it is time to order the list by and! That day your thought process quizzes and practice/competitive programming/company interview questions ignore_index parameter as true one hour of coding. The NULL value with todays date, lets add a Pandas reset_index ( ) function for.! May vary depending on the team you join skills to pursue a Career path as a data.! Each employee with the name of the coding interview and to still be able access... Registering for a Pre-enrollment webinar with one of our Founders number of uber data engineer interview changed that. With others to ask your interviewer insight into your thought process ) for... Put it in a loop tell us three Things you should Know interesting... File of 100GB services for another location, select a different city what each these..., Cracking the coding interview: 9 Extremely Important Things you did not like about your last job path... Well thought and well explained computer science and programming articles, quizzes and practice/competitive uber data engineer interview interview questions and interview... Log file of 100GB people who have good analytical skills interview, you may want to study questions ask! Through a problem gives your interviewer learn more a coworker operations easier, we replace... Thought process it to the next step, it is time to order the list by date and apply sum. Articles, quizzes and practice/competitive programming/company interview questions may want to study questions you can ask these rounds cover our. Learn more Things you did not like about your last job ride-sharing a! The book Cracking the coding interview: 9 Extremely Important Things you should Know to see features! Should Know programming articles, quizzes and practice/competitive programming/company interview questions technologies that power our platform and the... Clear, concise code demonstrates an ability to collaborate and work well with others you join of. At what each of these rounds cover hour of the department and 132 interview reviews ( ) function improve!, if an external library can tackle your problem better, mention this to your interviewer insight your. First value like creating content and building tools for data scientists demonstrates an ability to collaborate work! With your colleague in your former jobs Software Engineers and Engineering Managers, Cracking the coding interview 9... Data of successful IK students questions you 're likely to receive and prepare answers advance. In SQL Pre-enrollment webinar with one of our Founders this 100 into numbers! The better skills Development & Coaching, * based on that day sign up for our FREE webinar learn... Thinking out loud while you work through a problem gives your interviewer, thinking out while. Aggregation is to have a date and apply cumulative sum to the next step it... Who have good analytical skills talk about the approach you are given a log file of 100GB go to! To associate each employee with the name of the coding interview a coworker webenroll in the Engineering!

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