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Real OA and interview questions from 130 companies. How each company runs its loop, role-by-role interview guides (SWE, MLE, Research Scientist, Quant) and what is being asked this quarter. Free problems with full statements. Synced hourly.

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2026 & 2027 Tech Interview & OA Questions

Real Online Assessment and interview questions — and how each company actually runs its loop.

5,924 questions · 255 writeups · 132 companies · 2,056 free to practise · 662 reported in the last 90 days · synced from the live catalog every hour

▶ Practice these questions  ·  🏢 How each company interviews  ·  🏷️ By company type  ·  🆓 Free questions  ·  📊 What companies are asking

💼 New-grad jobs  ·  🎓 Internships  ·  📝 OA questions by role & level  ·  Report a question  ·  Fix a row  ·  Contributing


Every company has a home page — how it interviews, its interview-process guides in full, and its free questions with the whole statement and hints — under companies/. The free questions live under questions/, one folder each. Everything else opens the real problem on TrueInterview: a runnable workspace, not a screenshot, and a server-judged verdict on the algorithm, object-oriented-programming and SQL formats. Synced from the live catalog every hour, and free to share under CC BY 4.0.

📊 What companies are actually asking

Counted from the whole bank rather than claimed: which formats and companies have been reported this quarter, which questions turn up at the most employers, what the difficulty and topic mix actually is. Recomputed hourly, with every share naming the population it is a share of.

Last 90 days: 662 sightings at 86 companies — Algorithm 216 · SQL 15 · System Design 144 · AI Coding 5 · Blog 208 · Object Oriented Programming 74.

Reported most: Amazon (88) · ByteDance (43) · Google (40) · Microsoft (36) · Oracle (25) · LinkedIn (23) · OpenAI (23) · DoorDash (21)

Asked at the most companies: Merge Two Interval Lists (17) · Design Job Scheduler (16) · Merge Intervals (16) · Design News Feed (16) · Sliding-Window Rate Limiter II (14)

What companies are actually asking →  ·  Topics  ·  Companies  ·  Trends  ·  insights.json

🆓 Free to practise right now

2,056 of the 5,924 tracked questions open without a paid plan — the full statement, a runnable editor and a judged verdict.

Algorithm (483) · SQL (11) · System Design (49) · AI Coding (13) · Blog (1,416) · Object Oriented Programming (84)

Every free question, easiest first →

📖 How each company interviews

Interview process: Writeups on how 91 companies interview (255 of them)  ·  the same writeups by topic

How a round runs, a problem worked end to end, notes on a process — each one filed under the company it was reported at, and tagged with what it covers. Read the loop before you practise for it.

Every company page opens with the loop rather than the catalog — and all of it is counted from what candidates reported, never asserted:

On a company page What it answers
At a glance How many questions, when the last one was reported, what format they lean on, how much of it is free.
The loop, as reported Which rounds show up — OA, phone screen, onsite — how many questions came from each, and what each round is mostly made of.
Asked here in the last 90 days What is actually being asked now, newest first.
What they ask about The topics, as a share of the rows that carry a label — and when each was last seen.
When they asked it Month by month, so a quiet quarter looks like a quiet quarter.
Start here The handful to open tonight, under whichever of most recently reported and asked at the most other companies actually separates them — and it says so when neither does.
Guides & writeups The writeups filed under that company, and what candidates said happened in the room.

Amazon · Google · Meta · OpenAI · Stripe · Citadel — or every company →

🗣️ Latest interview reports

What candidates say happened in the room, written up by the people who sat the loop — the freshest thing here, since a report lands the week the interview happened.

Company Role Report Posted
Uber Software Uber BPS Round Interview Experience (Bengaluru, 2026) Oct 29, 2026
Uber Software Uber Freight SWE III Interview Experience (2026) Oct 29, 2026
Uber Software Uber Freight SWE III Interview Experience (2026) Oct 29, 2026
Uber Software Uber Freight SWE-3 Interview Experience (2026) Oct 29, 2026
Uber Software Uber Interview Experience (2026) Oct 29, 2026
Uber Software Uber L4 Interview Experience (2026) Oct 29, 2026
Uber Software Uber L4 Software Engineer Interview Experience (Bangalore, 2026) Oct 29, 2026
Uber Software Uber Mobile Developer Online Assessment Experience (2025) Interview Experience Oct 29, 2026

7,435 reports on the board →

🏷️ Browse by company type

Preparing for a kind of loop rather than one employer: what quant firms ask, what Big Tech asks, what a two-hundred-person startup asks. Sector and size are facts about the company, kept in one registry, and every cut says exactly what it selects.

🏛️ Big Tech (2,892) · 🏗️ Large tech (1,000–9,999) (1,721) · 🏤 Mid-sized tech (200–999) (127) · 🌱 Startups (under 200) (15) · 🧠 AI labs & AI infrastructure (504) · 📱 Consumer internet & media (1,591) · 🛒 E-commerce & marketplaces (1,238) · ☁️ Developer tools, cloud & data infrastructure (302) · 🏢 Enterprise & business software (723) · 🔒 Cybersecurity (80) · 💳 Fintech, payments & crypto (509) · 📈 Quant trading & hedge funds (375) · 🏦 Banks, insurers & asset managers (428) · 🔬 Semiconductors & chips (64) · 🖥️ Hardware, devices & networking (225) · 🚗 Autonomy, automotive & mobility (200) · 🎮 Gaming & interactive (106) · 🧾 IT services & consulting (45)

Every company type, with what each one selects →

🏢 Browse by company

Meta (489) · Amazon (470) · Google (383) · ByteDance (350) · Uber (266) · Microsoft (242) · Capital One (213) · Apple (182) · OpenAI (176) · DoorDash (151) · Snowflake (147) · LinkedIn (145) · Pinterest (128) · Stripe (119) · Oracle (115) · Airbnb (112) · Netflix (107) · Roblox (106) · Salesforce (100) · Anthropic (99) · Citadel (98) · Bloomberg (95) · Databricks (89) · Coinbase (87)

+ 108 more companies

Snapchat (87) · Waymo (87) · Goldman Sachs (68) · Instacart (65) · Atlassian (63) · Karat (61) · Rippling (58) · Square (56) · C3.ai (55) · NVIDIA (54) · Robinhood (54) · Tesla (52) · Two Sigma (50) · Lyft (49) · Upstart (49) · Ebay (48) · Disney (47) · Reddit (47) · IBM (45) · Squarepoint (45) · xAI (43) · Expedia (41) · Point72 (41) · Shopify (41) · Intuit (38) · PayPal (37) · SoFi (37) · Ramp (36) · Akuna Capital (35) · Optiver (35) · Scale AI (35) · Walmart Labs (35) · Verkada (33) · Confluent (30) · Applied Intuition (29) · Figma (29) · Datadog (28) · JPMorgan (28) · Cisco (27) · Pinduoduo (27) · Perplexity (25) · Harvey (23) · Hudson River Trading (22) · Tradedesk (22) · WeRide (22) · Yelp (22) · Dropbox (21) · Cvs Health (20) · Boston Consulting Group (19) · Rubrik (19) · Whatnot (19) · Affirm (18) · Voleon (18) · Thumbtack (16) · Bitkernel (15) · Jane Street (15) · Vanta (15) · Visa (15) · Mercor (14) · Airwallex (13) · HubSpot (13) · Microsoft AI (13) · Okta (13) · Nuro (12) · Onemain Financial (12) · Palantir (12) · Tubi (12) · Airtable (11) · Asana (11) · Axon (11) · Discord (11) · AMD (10) · Drw (10) · Glean (10) · Imc (10) · Mistral AI (9) · Sig (9) · Amplitude (8) · MongoDB (8) · Arista (7) · Bobyard (7) · Cursor (7) · GEICO (7) · Lead Bank (7) · Wayfair (7) · Circle (6) · Gusto (6) · Luma AI (6) · Moveworks (6) · OKX (6) · Together AI (6) · Ziphq (6) · Block (5) · Chicago Trading (5) · Faire (5) · Millennium (5) · Rokt (5) · Sigmacomputing (5) · StackAdapt (5) · Brex (4) · Siemens (4) · Cohere (3) · Oscar Health (3) · Stubhub (3) · Indeed (2) · Render (2) · Houzz (1) · Nclusion (1)

Every company, with counts →

🧩 Browse by format

Algorithm (2,653) · SQL (301) · System Design (758) · AI Coding (134) · Blog (1,416) · Object Oriented Programming (662)

📅 Browse by month reported

Oct 2026 (31) · Sep 2026 (333) · Aug 2026 (302) · Jul 2026 (126) · Jun 2026 (240) · May 2026 (249) · Apr 2026 (399) · Mar 2026 (274) · Feb 2026 (329) · Jan 2026 (389) · Dec 2025 (221) · Nov 2025 (217) · every month →


🔥 Latest sightings

🔥 reported in the last 14 days  ·  🆕 in the last 45  ·  a dash means no sighting date was recorded, which is not the same as old.

Company Question Format Reported
Airbnb Progressive Banking System Object Oriented Programming 🆕 Oct 14, 2026
Airbnb Parcel Attribute Store Object Oriented Programming 🆕 Oct 09, 2026
Disney Data Pipeline Design (Data Engineer) System Design 🆕 Oct 08, 2026
Disney Data Engineer Tech Questions: LLM Prompting, Data Quality & Security Object Oriented Programming 🆕 Oct 08, 2026
Disney Data Engineer Hiring Manager & Panel Behavioral Blog 🆕 Oct 08, 2026
IBM Customers with High Average Resource Usage SQL 🆕 Oct 05, 2026
ByteDance Ticket Booking System Under Flash-Sale Traffic System Design 🆕 Oct 05, 2026
C3.ai Star Sum: Best k-Star Sum in a Graph Algorithm 🆕 Oct 04, 2026
Stripe Payment State Machine Object Oriented Programming 🆕 Oct 04, 2026
Google Course Scheduling and Dependency Variants Algorithm 🆕 Oct 04, 2026
Google Connected Crop Arrangement on a Grid Algorithm 🆕 Oct 04, 2026
Google Longest Non-Decreasing Subarray with One Replacement Algorithm 🆕 Oct 04, 2026
OpenAI Design a Cloud IDE System Design 🆕 Oct 04, 2026
Amazon Number of Islands with Max-Area and Streaming-Rows Follow-Ups Algorithm 🆕 Oct 03, 2026
Microsoft Count Non-Decreasing Arrays with Target Digit Sums Algorithm 🆕 Oct 03, 2026
Amazon Service Instance Rating Threshold Algorithm 🆕 Oct 03, 2026
Capital One Number-Line Block Placement Algorithm 🆕 Oct 02, 2026
Capital One Matrix Pattern Matching Algorithm 🆕 Oct 02, 2026
Amazon Checkout Price Engine Object Oriented Programming 🆕 Oct 02, 2026
Apple Plant Infection Spread: Days Until Stable Algorithm 🆕 Oct 02, 2026
Google ML System Design (Recsys / Chatbot / Image Classifier) System Design 🆕 Oct 02, 2026
Citadel Memory Blocks — Reachable MEX After One Increment Algorithm 🆕 Oct 01, 2026
Snowflake Tiered Rate Limiting Service Object Oriented Programming 🆕 Oct 01, 2026
Microsoft Maximum Subarray Sum After K Concatenations Algorithm 🆕 Oct 01, 2026
Microsoft Employee Attrition Prediction Algorithm 🆕 Oct 01, 2026
Amazon / Scale AI Lowest Common Manager in an Org Chart (Binary-Tree LCA Family) Algorithm 🆕 Oct 01, 2026
Microsoft Reconstruct a Sentence from a Dictionary (Word Break Variant) Algorithm 🆕 Oct 01, 2026
Microsoft Minimum Set of Values to Remove Half the Array Algorithm 🆕 Oct 01, 2026
Microsoft Maximum Number of Occurrences of a Substring (LC 1297) Algorithm 🆕 Oct 01, 2026
Microsoft House Robber IV (LC 2560) Algorithm 🆕 Oct 01, 2026
Apple / Amazon / Bloomberg / ByteDance / LinkedIn / Meta / Microsoft / PayPal / Pinduoduo / Shopify LRU Cache AI Coding 🆕 Oct 01, 2026
Stripe Request Routing System Algorithm 🆕 Sep 30, 2026
Waymo Merge Object Histories Across Two Tracking Systems Object Oriented Programming 🆕 Sep 29, 2026
IBM Function Signature Matching Library (Variadic Overloads) Object Oriented Programming 🆕 Sep 29, 2026
Snowflake Encode and Decode Strings (LC 271) Algorithm 🆕 Sep 29, 2026
Microsoft Lab Machine Compute-Load Monitoring System Design System Design 🆕 Sep 29, 2026
Google Shortest Path Nodes and Escaping a Pursuer Algorithm 🆕 Sep 29, 2026
Google Grid Path Count with Diagonal Moves and Checkpoints Algorithm 🆕 Sep 29, 2026
Microsoft Region Sizes in a Binary Image Algorithm 🆕 Sep 29, 2026
Google Maximum-Area Rectangle from Planar Points Algorithm 🆕 Sep 29, 2026
Amazon Ones and Zeroes (LC 474) Algorithm 🆕 Sep 29, 2026
Amazon Maximize Bitwise AND Under a Budget Algorithm 🆕 Sep 29, 2026
Amazon Lowest Common Ancestor of a Binary Search Tree (LC 235) Algorithm 🆕 Sep 29, 2026
Google Path Minimizing the Maximum Cell (Swim in Rising Water) Algorithm 🆕 Sep 29, 2026
Google Meeting Rooms / Interval Scheduling Variants Algorithm 🆕 Sep 29, 2026
Google Friend Graph with Timeline (Friend / Unfriend Events) Algorithm 🆕 Sep 29, 2026
Uber / Google Squares of a Sorted Array Algorithm 🆕 Sep 29, 2026
Oracle Large-File Video Upload System Design 🆕 Sep 28, 2026
LinkedIn Systems and Java Fundamentals Blog 🆕 Sep 28, 2026
OpenAI Poker Simulation Object Oriented Programming 🆕 Sep 28, 2026
Amazon Othello Move — Flip Captured Pieces Algorithm 🆕 Sep 28, 2026
Google URL Request Handler Router Object Oriented Programming 🆕 Sep 28, 2026
ByteDance Spiral Matrix (LC 54) with Follow-Up Constraints Algorithm 🆕 Sep 28, 2026
Amazon Evaluate Division (LC 399) with a High-Volume Query Follow-Up Algorithm 🆕 Sep 28, 2026
Citadel Research Engineer Sequence Classification Algorithm 🆕 Sep 27, 2026
Amazon Multi-Head Attention Coding Algorithm 🆕 Sep 26, 2026
Amazon GRPO Notebook Exercise Algorithm 🆕 Sep 26, 2026
Oracle Valid Parentheses with a Follow-Up Algorithm 🆕 Sep 25, 2026
Oracle Logger Handler Pipeline Object Oriented Programming 🆕 Sep 25, 2026
ByteDance Tic-Tac-Toe Game-State Check Algorithm 🆕 Sep 25, 2026
Pinterest Senior Staff Hiring-Manager Conversation Blog 🆕 Sep 23, 2026
Netflix MLE Intern OA: ML Fundamentals Blog 🆕 Sep 23, 2026
Amazon SDE Project and Resume Deep Dive Blog 🆕 Sep 23, 2026
OpenAI / Airbnb / Amazon / Meta / Microsoft AI Design Online Chess Game System Design 🆕 Sep 23, 2026
Amazon Explain a Project That Could Not Meet a Tight Deadline Blog 🆕 Sep 20, 2026
Amazon Design a Kafka-Based File Watcher for Millions of Files System Design 🆕 Sep 20, 2026
Amazon Coordinate a Fleet of Restaurant Robots System Design 🆕 Sep 20, 2026
Amazon Describe a Deep Debugging Investigation Blog 🆕 Sep 20, 2026
Airbnb Document Redaction Algorithm 🆕 Sep 19, 2026
Oracle Resume / Project Deep Dive (HM or Tech Screen Opener) Blog 🆕 Sep 19, 2026
Amazon Extensible File Search Object Oriented Programming 🆕 Sep 18, 2026
Ramp Spreadsheet String Concatenation with Dependent Cells Algorithm 🆕 Sep 18, 2026
Rippling Design Raw and Computed Spreadsheet Views Object Oriented Programming 🆕 Sep 18, 2026
Google Design Extensible Spreadsheet Aggregation APIs Object Oriented Programming 🆕 Sep 18, 2026
Citadel Design a Top-Ten Trade Query with Exact Amounts Algorithm 🆕 Sep 18, 2026
Amazon Design a Distribution-Center Inventory Update Service System Design 🆕 Sep 18, 2026
Citadel Define a Reliable Trade-Reconciliation Library Contract Object Oriented Programming 🆕 Sep 18, 2026
Instacart Debug Search and Stock Behavior in a Library Application Blog 🆕 Sep 18, 2026
Houzz Convert a Column Number to an Excel-Style Label Algorithm 🆕 Sep 18, 2026
Instacart Calculate Inventory Purchases with Buy-X-Get-Y-Free Coupons Algorithm 🆕 Sep 18, 2026
Citadel SDE OA Fundamentals Quiz Blog Sep 17, 2026
Microsoft Distributed Embedding and LM Head Design System Design Sep 17, 2026
Meta Data Engineering Leadership — Impact and Mentorship Blog Sep 17, 2026
NVIDIA Research Project Deep Dive: Motivation, Training Pipeline, Results, and Takeaways Blog Sep 17, 2026
Cisco Formalize a Minimum-Trip Transport Puzzle with Horses and Ladders Blog Sep 17, 2026
Robinhood Find the Top Ten Words When a Book Exceeds Memory System Design Sep 17, 2026
Meta Diagnose a Single-Server Crash with Concrete Linux Evidence Blog Sep 17, 2026
LinkedIn Define Project Success, Handle Direction Changes, and Apply Feedback Blog Sep 17, 2026
Sig Rotate a Square Matrix Clockwise While Both Diagonals Stay Fixed Algorithm Sep 17, 2026
OpenAI Order Tasks with Dependencies Using a Deterministic Topological Sort Algorithm Sep 17, 2026
Sig Count Equal-Difference Triples After Each Add or Remove-All Operation Algorithm Sep 17, 2026
LinkedIn Explain a Project with a Diagram and Deep Dive into Your Design Blog Sep 17, 2026
LinkedIn Block Malicious IPs at an API Gateway Across Data Centers System Design Sep 17, 2026
Render Rate Limit an API During a Traffic Attack Object Oriented Programming Sep 17, 2026
Ziphq Find the Guaranteed Capture Time in a Turn-Based Graph Game Algorithm Sep 17, 2026
Snowflake Explain a Technical Project from Milestone to Production Blog Sep 17, 2026
Robinhood Design a Task Scheduler System Design Sep 17, 2026
Snowflake Four-in-a-row Game Algorithm Sep 17, 2026
Snowflake / Anthropic Web URL Crawler at Scale Algorithm Sep 17, 2026
Amazon Music Recommendation and CTR Modeling Blog Sep 16, 2026

The newest slice, not the bank — use the navigation above for the rest. Every question is on a company page, a format page, and (if it carries a sighting date) a month page.


💾 Take the data

data/questions.jsonl one JSON object per line, slug-sorted
data/questions.csv the same rows as a spreadsheet
data/companies.csv every company and its question count
data/guides.csv every Study-section writeup, with its company and topics
data/insights.json every number on the insights pages, as data
data/paths.json the folder each published question and guide was given — stable, so links never move
Live API what this repo is generated from

⚙️ How it stays current

Everything under companies/, questions/, formats/, by-month/, guides/, insights/, free/, experiences/ and data/ is generated hourly by scripts/sync.py from TrueInterview's public, documented, read-only catalog API — which publishes metadata only — plus one export of the free tier's bodies: the statements and hints of free questions, and the interview guides. Solutions, test cases and paid questions are never exported, so they are never here; they live on the site.

python3 scripts/sync.py          # refresh from the live catalog
python3 scripts/sync.py --check  # verify nothing is stale
python3 -m unittest discover scripts

Design notes, the byte budgets and the rules the renderers hold: DESIGN.md.

🤝 Contributing

Sightings keep this current. Report a question or fix a row — read CONTRIBUTING.md first. Short version: a summary in your own words, never a screenshot or a copied problem statement.

📄 Licence

The text — question statements, hints, company pages and interview guides — is licensed CC BY 4.0: repost, translate or adapt it anywhere, commercially or not, crediting TrueInterview with a link back. The scripts are MIT (LICENSE). Reference solutions, test cases and paid questions are not published here and are not covered by either.


🤝 Related

💼 New-Grad-Opportunities Every open entry-level tech role in the catalog, refreshed hourly and filtered by company type, role and metro.
🎓 Internship-Opportunities The same, for internships and co-ops.
🧭 TrueInterview The catalog behind all three: a runnable workspace, server-side judging on the coding formats, CV tailoring and application tracking.

The loop, end to end: find the role on one of the job lists → read how that company interviews here → practise the exact questions it has been reported asking.

About

Real OA and interview questions from 130 companies. How each company runs its loop, role-by-role interview guides (SWE, MLE, Research Scientist, Quant) and what is being asked this quarter. Free problems with full statements. Synced hourly.

Resources

Contributing

Stars

4 stars

Watchers

1 watching

Forks

Contributors

Languages