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AI mock interview for Software Engineers (SDE)
A live, adaptive SDE interview that moves between coding, data structures, design trade-offs and behavioral questions — then shows you exactly which competency held you back.
Free 10-minute interview with a full report. Paid plans run full-length sessions.
Software Engineer interview questions you might get
A sample of the starting questions. The live interview follows up on your answer, so no two sessions go the same way.
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Given a stream of log lines, return the 10 most frequent error codes in the last hour. Walk me through your approach before you code.
What it tests: Tests heap vs. hash map trade-offs and sliding windows.
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Design the data model and API for a URL shortener. Where does it break first at 10x traffic?
What it tests: Checks whether you reason about bottlenecks, not just boxes.
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Your teammate's PR passes tests but you think the design is wrong. What do you do?
What it tests: Collaboration under disagreement.
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Detect a cycle in a linked list, then return the node where the cycle begins.
What it tests: Classic pointer reasoning with a follow-up.
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Tell me about a production bug you caused. How did you find it and what changed afterwards?
What it tests: Ownership and learning signal.
How a session works
About 20–30 minutes from setup to report. End any time and you still get feedback on what was covered.
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Set your target
Pick a role, level and stack. Add a job description or your resume if you want questions about your real projects.
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Answer live
Speak or type. The interviewer follows up on thin answers, raises the difficulty when you're doing well and switches to code when it fits.
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Read the notes
A report scores every competency, quotes the answers that cost you, and gives you a prep plan for the next session.
A report that quotes you, not a pat on the back
Every score links back to something you actually said.
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Competency scores
Weighted to the role you picked, so a system design gap counts more for a senior backend role than for a frontend junior.
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STAR check on every story
See which part of each behavioral answer was missing — usually the Result.
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How you sounded
Filler words, hedging, "I" versus "we", and whether you cited real numbers — measured from your words, and compared between the first and second half of the interview.
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A prep plan
The two or three things to practice next, and a skill graph that tracks them across sessions.
Competencies — sample report
STAR — "Tell me about a missed deadline"
How you sounded
Questions
Does it include a coding round?
Yes. Technical SDE interviews can switch into a coding question with an in-browser editor; your code snapshot is reviewed alongside your explanation.
Can I target SDE-1, SDE-2 or senior levels?
Yes. Pick Junior, Mid, Senior or Staff before you start. The interviewer adjusts difficulty up or down based on your answers during the session.
Is this the same as a real company's interview?
No AI tool can reproduce a specific company's private process. It follows widely documented SDE interview patterns and tells you which competencies need work.
Is it free to try?
Yes. Each month you get a free interview of up to 10 minutes with its scored report. Paid plans add full-length interviews, every track and the full 360 report.