Question bank

Interview questions, with guidance on how to answer

834 questions across 64 roles. Open one to see what a strong answer includes and common slips, then drill it out loud with Ava. New to answer structure? Start with the learning hub.

572 questions match your filters.

TechnicalMid levelBusiness Analyst
How do you write acceptance criteria, and how do you know a user story is ready for the team to start building?
Tests: Documentation & user stories
TechnicalMid levelBusiness Analyst
After a solution goes live, how do you check that it actually delivered the benefit everyone expected?
Tests: Solution evaluation
TechnicalSeniorBusiness Analyst
How do you decide which requirements truly matter when the budget only covers about half of them?
Tests: Domain & business acumen
TechnicalEntry levelTechnical Support Engineer
A customer says the product is slow but gives you no other details. What would you ask them first?
Tests: Troubleshooting & root cause
TechnicalEntry levelTechnical Support Engineer
In simple terms, what happens when you type a web address into a browser and the page loads?
Tests: Technical knowledge
TechnicalMid levelTechnical Support Engineer
Walk me through a tricky technical issue you solved recently, step by step.
Tests: Troubleshooting & root cause
TechnicalMid levelTechnical Support Engineer
How do you use logs or monitoring tools to narrow down a problem? Give me a real example.
Tests: Logs, tools & scripting
TechnicalMid levelTechnical Support Engineer
How do you decide when to escalate a ticket to engineering, and what do you include when you do?
Tests: Escalation & engineering collaboration
TechnicalMid levelTechnical Support Engineer
Several urgent tickets arrive at the same time. How do you decide what to work on first?
Tests: Ticket & incident handling
TechnicalSeniorTechnical Support Engineer
How would you reduce repeat tickets for the same issue across the whole support team?
Tests: Documentation & knowledge sharing
TechnicalAny levelTechnical Support Engineer
How do you write a help article or internal note so the next person can solve the issue on their own?
Tests: Documentation & knowledge sharing
TechnicalEntry levelAny software role
Coding problem: Pair With Target Sum. You are given a list of integers `nums` and an integer `target`. Return the positions of the two different entries that add up to `target`, as a list `[i, j]` with `i < j`.
Tests: Problem solving
TechnicalEntry levelAny software role
Coding problem: Balanced Brackets. Given a string `text`, decide whether its brackets are balanced. The bracket pairs are `()`, `[]` and `{}`; every other character is ignored.
Tests: Problem solving
TechnicalEntry levelAny software role
Coding problem: First Unrepeated Character. Given a string `text`, return the index of the first character that occurs exactly once in the whole string. Return `-1` if every character repeats.
Tests: Problem solving
TechnicalEntry levelAny software role
Coding problem: Palindrome After Cleanup. Decide whether `text` reads the same forwards and backwards once you drop every character that isn't a letter or a digit and ignore letter case.
Tests: Problem solving
TechnicalEntry levelAny software role
Coding problem: Totals by Category. Each record is an object `{"category": string, "amount": integer or null}` describing one sale, with the amount in cents. Return an object that maps each category to the sum of its amounts.
Tests: Problem solving
TechnicalEntry levelAny software role
Coding problem: Flatten Nested Settings. Given a nested object `obj` (for example, a settings tree), return a flat object whose keys are the dot-separated paths to every leaf value.
Tests: Problem solving
TechnicalMid levelAny software role
Coding problem: Merge Booked Slots. A calendar holds booked slots as `[start, end]` pairs of integers (minutes from midnight), in no particular order. Merge every group of overlapping or touching slots and return the merged slots sorted by start.
Tests: Problem solving
TechnicalMid levelAny software role
Coding problem: Most Frequent Terms. Given a list of lowercase `words` and an integer `k`, return the `k` most frequent distinct words, most frequent first. Break ties alphabetically, using plain character order (so `"ant"` comes before `"bee"`, and `"car"` before `"cart"`).
Tests: Problem solving
TechnicalMid levelAny software role
Coding problem: Errors per Minute. Each entry of `lines` is one line of a service log in the form `<timestamp> <level> <message>`, for example `2025-03-14T09:26:53Z ERROR payment declined`. The timestamp is UTC in exactly the form `YYYY-MM-DDTHH:MM:SSZ` (a digit in every letter position), followed by one space and the level, a single word with no spaces. After the level there may be a space and a message, which can contain any text, or nothing at all.
Tests: Problem solving