Practice behavioral, DSA, and system design interviews with an AI coach that asks real follow-ups, gives a structured scorecard, and never charges a cent.
No signup, no setup — pick your mode and start practicing in under 30 seconds.
Select behavioral, DSA/coding, or system design. Then set your target role and company tier.
The AI asks 5 realistic questions with contextual follow-ups — just like a real interview loop. Request a hint anytime.
Receive scores on clarity, depth, structure, and accuracy — plus strengths, gaps, and a sample ideal answer.
Each mode has its own AI persona, question bank, and scoring rubric.
STAR-structured questions about leadership, conflict, ambiguity, and impact.
Algorithm problems tuned to your tier. Explain your approach first, then handle complexity and edge cases.
Design real-world systems at scale. Drills into DB choices, caching, bottlenecks, and CAP theorem.
Questions are generated in real time by Gemini 2.5 Flash, guided by detailed prompts encoding proven interview frameworks.
Questions generated in real time guided by system prompts encoding question categories, difficulty levels, and follow-up patterns for each mode and tier.
Primary sourcePrompts informed by well-documented FAANG patterns from Blind, Glassdoor, Leetcode Discuss, and resources like Grokking and "Cracking the Coding Interview."
Prompt engineeringDSA categories aligned with the Blind 75 and Neetcode 150 problem sets — the most widely used curated lists for technical interview prep.
DSA frameworkSystem design problem categories and evaluation criteria mirror the frameworks in "System Design Interview Vol. 1 & 2."
System design frameworkInterviewIQ is fully open source. The backend, prompts, and deployment guide are all public.
Everything you need to know before your first session.