Amazon Interview Questions

Anonymous Unicorn - "input_logs = [ f"{senderid} {receiverid} {transaction_count}" "1 2 2", "3 2 42", "2 2 22", "1 1 12", "2 1 1", "2 5 4", "4 2 15" ] input_threshold = 20 exptected_output = [ list of user_ids that made more than 20 transactions sorted by number of transactions in descending order "3", # 42 transactions "2", # 27 transactions (22 + 1 + 4) #"4", # 15 transactions #"1" # 14 transactions (2 + 12 + 1) ] def gettopapi_users(logs, thres"See full answer

Anonymous Angelfish - "Not at all impressed. Very simple problem he is solved"See full answer

Rahul P. - "Providing some bullets to expand on to respond to this question- Inability to adapt to the changes in customer's needs in retail industry Lack of competitive analysis Rigid business model Lack of well defined Vision and Strategy"See full answer

Anonymous Crayfish - "Let me tell you about a time when I solved a problem at my previous company (one of the top 10 Fortune 500 companies). This was an internship and I was coming with almost 2 years of experience and 2 semesters of my graduate program. My experiences have mostly been theoretical or with startups. I've never solved problems at scale. The first week at this team was slow and relaxed, it was just onboarding. The real work started from the 2nd week when I felt like I was pushed into the ocean with n"See full answer

Howard H. - "We have to work with the c-suite to understood the direct quartly outcomes or goals. This could be our epic and then we try to break that down into business value and complexity . This will allow us to prioritize whats next. From there we can structure a mvp to cover maybe some of these areas to understand the estimation of this work. After the first couple weeks we can structure a roadmap and then define when"See full answer

Jatin S. - "A project charter is a formal document that authorizes a project and outlines its objectives, scope, stakeholders, and key details. It serves as an agreement among stakeholders and provides a clear foundation for the project by defining what needs to be done and why. Typically, the project sponsor issues the project charter to the project manager or team, formally initiating the project. A project charter typically includes the following key elements to ensure a comprehensive and clear unde"See full answer

Dhruv M. - "During my internship at Inspira Analytics, our intern team had worked for two weeks on a client presentation for a new data dashboard. Unfortunately, during the final review, the manager pointed out several major flaws in our analysis and asked us to redo the entire structure. The feedback was blunt, and the team felt discouraged, questioning whether our efforts were even valued. As the informal team lead, I felt responsible for helping lift the team’s morale and refocus everyone so we could del"See full answer

Rishabh L. - "Pizza Ordering System orderdetail - orderdetailid (PK), orderid (FK), itemid (FK), itemqty, itemized_price order - orderid (PK), customerid (FK), orderdate, locationid (FK), ordertype (DINEIN, PICKUP, DELIVERY), refid (dineinid, pickupid, deliveryid), subtotal, tax, tip, totalamount, payment_method (CASH, CARD) location - locationid (PK), locationdesc, city, state, startdate, enddate customer - customer_id (PK), name, address (nullable), phone (nullable), dob (d"See full answer

Dhruv M. - "During my internship at Insighta Analytics, our team was planning to prioritize a marketing campaign focused on customer acquisition through social media ads. The marketing lead was confident this would yield the best ROI based on past success. I was tasked with supporting the strategy by analyzing customer engagement trends. But as I dove into the data, I started to question whether the current direction was the best use of our budget. I analyzed customer conversion data from the last two quart"See full answer

Scott S. - "To recount an experience from my last project . We were at the initial stages of designing a new data platform to enhance our trading analytics capabilities. The conflict arose over the selection of a data processing framework. I was advocating for Apache Spark due to its scalability and performance benefits, especially for handling large volumes of derivatives data. Another senior team member preferred a different technology they had more experience with, which they believed would be easier to"See full answer

Nithesh S. - "First, let us start with the mission of Amazon: “We strive to offer our customers the lowest possible prices, the best available selection, and the utmost convenience.” Alignment of recommendations system with Amazon's mission: Suggesting recommendations to the users would be a part of this mission as it would allow users to buy things on their mind for the lowest cost in market (may or may not be true). They might get better prices if they order adjacent items together. For example, i"See full answer

Anonymous Unicorn - "Count items between indices within compartments compartments are delineated by by: '|' items are identified by: '*' input_inventory = "*||||" inputstartidxs = [1, 4, 6] inputendidxs = [9, 5, 8] expected_output = [3, 0, 1] Explanation: "*||||" 0123456789... indices ++ + # within compartments ^ start_idx = 1 ^ end_idx = 9 -- - # within idxs but not within compartments "*||||" 0123456789... indices "See full answer

Ilnur I. - "I can try to summarize their discussion as I remembered. Linear regression is one of the method to predict target (Y) using features (X). Formula for linear regression is a linear function of features. The aim is to choose coefficients (Teta) of the prediction function in such a way that the difference between target and prediction is least in average. This difference between target and prediction is called loss function. The form of this loss function could be dependent from the particular real"See full answer

Anjali M. - "Colleague moved to a different role, so I decided to fill in and did outshine in showing results within the group."See full answer