Stripe Software Engineer Coding & Algorithms Interview Questions
Practice 40 real Coding & Algorithms interview questions for Software Engineer roles at Stripe.
"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"
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"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."
"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."
"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Register Data Centers and Route to the Nearest Healthy Region
Problem Process commands for an in-memory registry of data centers. Each registered region has integer latitude, integer longitude, positive integer c...
Schedule Weekly Deployment Windows
Schedule Weekly Deployment Windows The source reports a weekly deployment-window scheduler. The absolute-time horizon, cyclic start == end rule, and c...
Generate Account Email Notifications
You are building an email notification scheduler for user accounts. You are given: 1. A list of user accounts. Each account has: - account_id - ...
Assign Reviewers from Changed Files
Write a Java program that helps automatically assign a code reviewer after a pull request is opened. You are given: 1. A local Git repository path. 2....
Calculate Transaction Fees
You are building a payment processor. Each transaction has an amount in cents, a payment type, and a payment status. The platform charges a percentage...
Build an Account Transfer Ledger
This question evaluates the ability to implement transaction processing, state management, validation of transfers (including rejects and platform len...
Simulate sticky load balancer with shutdown
Problem Implement a simulator for a load balancer that routes long-lived WebSocket connections across m backend servers. You receive a sequence of tex...
Validate KYC CSV Records
This question evaluates skills in CSV parsing, string normalization, field-level validation, and rule-based text matching, emphasizing attention to ed...
Implement Validation and String Compression
This question evaluates string processing, input validation, tokenization, hierarchical string manipulation, and algorithmic complexity analysis skill...
Find linked user records by similarity
You are given a list of user records. Each record has the following fields: - id (integer, unique) - name (string) - email (string) - company (string)...
Implement bitmap font render/compress/invert
This question evaluates proficiency in bitmap and matrix manipulation, lossless compression/decompression techniques, and modular code reuse for trans...
How to settle multi-person debts in minimum transactions
This question evaluates algorithm design and combinatorial optimization skills, focusing on reasoning about net balances, transaction minimization, an...
Find linked merchants by shared fields
This question evaluates the ability to model and detect entity linkages via exact field matching and weighted scoring as well as to reason about reach...
Propagate runtime ID across API requests
This question evaluates proficiency in runtime ID propagation across HTTP requests, JSON parsing and serialization, nested data traversal, and type-pr...
Implement a Datacenter Request Router
This question evaluates command parsing, stateful data structure management, input validation, geospatial computation using the Haversine formula, det...
Compute account balances with rejection and overdraft
You are given a list of transaction records as strings. Each record has the format: ` account_id,timestamp,currency,amount ` - account_id: string iden...
Implement JSON parsing and HTTP integration tasks
This question evaluates proficiency in JSON parsing, file I/O, HTTP client integration, request/response handling, payload construction, mapping data ...
Process auth requests with fraud rules
Question Implement a function that, given a list of Authorization Requests (timestamp_seconds, unique_id, amount, card_number, merchant), outputs a hu...
Validate transactions with risk rules and reporting
This question evaluates skills in CSV parsing and input validation, numerical and timestamp parsing, rule-based fraud detection and behavioral feature...
Implement a CSV dataset join
Implement joinDataSet(fieldName, customerFile, processorFile, skipUnmatched). You are given two datasets represented as List<String>, where: - custome...