Notion interview, decoded.

Notion does not publish its interview process, so the stages below come from candidate reports. Glassdoor averages about 27 days across 221 reports and puts engineering manager loops near 90. Ask the recruiter for your exact rounds, because they vary by team.

These come from LeetCode Discuss (June 2024), Glassdoor (September 2026) and PracHub's list of Notion questions (July 2025 to June 2026). They are object models shaped like Notion's product more than algorithm puzzles, so what matters is a clean class design, operations that compose, and code that runs.

• A text document with apply, undo and redo: Reported as a phone screen in June 2024: operations append text to the end or delete n characters from the end, then undo the latest and redo. Represent each operation as an object that can apply itself and produce its inverse, keep one stack for undo and one for redo, and clear the redo stack when a new operation arrives. For the delete, store the characters you removed so undo can put them back.
• Implement list functionality: Asked in a technical phone screen in September 2026, with no more detail in the report. In Notion a list is a block that holds child blocks, so prepare to add, remove, move and nest items, and to say how you would keep order stable when items move.
• Design a todo list object model: Items with state, due dates and ordering inside lists. Decide what belongs on the item and what on the list, and keep the operations small enough to test one at a time.
• Implement table aggregation: Rows with typed columns, then aggregates per column: count, sum, average, grouped by another column. This is Notion's database view in miniature. Handle empty cells and mixed types explicitly.
• Find the top errors in a time window: Count errors by type over a sliding window of timestamps. Keep a queue of events in the window and a count per type, evict from the front as time moves, and use a heap when you need the top k.
• A recursive JSON viewer in React, with collapse: A component that renders a value and calls itself for each child of an object or array, with collapsed state per node. Key nodes by their path so state survives re-renders, and handle deep nesting and empty containers.
• Implement a DAG task graph: Reported for data engineers in April 2026. Store tasks and dependencies, detect cycles, and produce a run order with a topological sort; be ready to run independent tasks in parallel.

One candidate's advice from the undo and redo screen: don't expect any hints during the interview. Get a working version first, then extend it.

Notion publishes four values on its careers page, and its job ads add one line about craft: building things that last.

• Customer in every room
• Own the outcome
• Why not today
• Direct and kind
• Craft, building things that last

The coding problems recur and have their own section below. The behavioural questions follow Notion's values and what candidates report being asked.

Levels.fyi figures for Notion software engineers in the US, from a snapshot dated August 2025 and read on 25 September 2026: a median package of $242K, rising from $196K at L1 to $910K at L5, with stock making up much of the difference at senior levels. Notion posts base ranges on its ads, for example $150K to $200K for a software engineer on product infrastructure in San Francisco or New York, and $135K to $155K for new graduates. Calibrd benchmarks the pay on any posting you scan against its level and location.

1. Write an undo and redo system from scratch once: operations as objects, two stacks, inverses stored at apply time.
2. Practise modelling a small piece of Notion in classes: a list with nested items, a todo list, a table you can aggregate.
3. Prepare one system design close to the product, such as a shared calendar or a collaborative document service.
4. Use Notion properly before the loop, including its AI agents. Candidates in non-technical roles report a strong emphasis on AI fluency.
5. Plan for three office days a week: Monday, Tuesday and Thursday.

This guide covers Notion's software, data and early-career engineering loops. Sales and solutions roles run a different process that includes a demo. For management and leadership roles the loop is similar but the bar shifts to people, delivery and strategy, so pair it with the leadership interview prep hub. The bar for your exact role comes from the role-by-role guides, and the prep that actually transfers is spoken, so run a mock interview before the real one.

Also interviewing at Datadog, Linear or Canva? Their guides follow the same format, from the first screen to the offer.

• 01LeetCode Discuss, Notion tech screena text document class that applies operations (append, delete n characters from the end), undoes and redoes them, and 'don't expect any hints'; June 2024
• 02Glassdoor, Notion Labs interview questions (archived September 2026)221 interviews, an average of 27 days and about 90 for engineering managers, a September 2026 phone screen on implementing list functionality, and a solutions architect asked how they would use Notion Agents
• 03PracHub, Notion interview questionsundo and redo text editor (August 2025), a recursive React JSON viewer (July 2025), table aggregation (February 2026), a todo list object model, top errors in a time window and a shared calendar service (June 2026), and a DAG task graph for data engineers (April 2026); an aggregator, so treat the round names in its guide as reported, not published
• 04Notion job board (Ashby)129 open roles on 25 September 2026, 17 in engineering, with posted base ranges
• 05Notion careersthe four values and the three office days: Monday, Tuesday and Thursday
• 06Levels.fyi, Notion software engineer (archived August 2025)the $242K US median and the L1 to L4 figures
• 07CNBC, Notion crosses $500 million in annual revenuefounded in 2013, about 1,000 employees and over 100 million users; 18 September 2025
• 08TechCrunch, Notion turns its workspace into a hub for AI agentsthe developer platform and more than a million agents built by customers; 13 May 2026

Interview processes change. This reflects widely-reported and sourced conditions as of 2026 — confirm specifics with your recruiter, and treat it as a map rather than a guarantee.