The Best MCQ Questions for Software Engineer Screening
Why MCQ screening still works in 2026
It is fashionable to dismiss multiple-choice tests as "trivia." That critique is fair when the questions are bad. Good MCQ questions are the cheapest, fastest filter in your funnel: they take a candidate 15 minutes and an interviewer zero, and they reliably separate "knows what a hash map is" from "added 'JavaScript' to their LinkedIn."
What separates a good MCQ from a bad one
Bad: Which year was Python first released?
Good: You see this code in a PR. What is the most important issue to flag in review? (with four plausible options, only one of which is the real bug)
The best MCQ questions:
- Test judgment, not recall. "Which of these is the right tool" beats "what is the syntax."
- Have plausible distractors. Every wrong answer should be the right answer to a different question.
- Use real artifacts. Show a stack trace, a SQL query, a diff — not abstract prose.
- Time-box per question. 60–90 seconds forces gut-level competence rather than Googling.
Sample question types we recommend
- Bug spotting. A 15-line function with one subtle bug. Four answer choices, one correct.
- Complexity reasoning. "What is the time complexity of the function above?"
- Tool selection. "You need to deduplicate a 200GB log file on a single machine with 16GB RAM. Best approach?"
- API knowledge. Real method signatures from frameworks the role uses.
- Security. "Which of these endpoints is vulnerable to IDOR?"
How long the test should be
For a senior IC role: 15–20 questions, 25-minute hard cap. Anything longer punishes good candidates without improving signal. We see the strongest correlation with on-the-job performance at exactly the point where candidates feel mildly time-pressured but not panicked.
Don't stop at MCQ
MCQ alone cannot tell you whether a candidate can write code. It tells you whether they should advance to the part where you find out. Pair it with a short live coding round and you have replaced an entire phone screen.