Node.js
Practice runtime fundamentals, async flows, and backend scenarios typical of Node interviews.
View role pageAI-powered · Role-based practice
Free mock interviews for developers
Practice mock interviews for Node, React, System Design, and more- structured like real screens so you build confidence before the real thing.
Prefer reading first? Explore technical interview questions by topic, then come back here to practice aloud.
Choose your interview role
Each card opens a dedicated interview prep page for that track.
React
Drill hooks, rendering, performance, and frontend architecture questions at interview pace.
View role pagePython
Cover language internals, data structures, and patterns common in Python-heavy roles.
View role pageDevOps
Talk through CI/CD, infra, observability, and reliability like a real DevOps screen.
View role pageSystem Design
Design scalable systems under time pressure-APIs, storage, trade-offs, and diagrams.
View role pageSQL
Sharpen query modeling, indexing, and database reasoning with interviewer-style follow-ups.
View role pageJava
Practice JVM concepts, concurrency, and enterprise patterns asked in Java interviews.
View role pageML / AI
Walk through modeling choices, evaluation, and ML systems questions clearly and confidently.
View role pageProduct
Structure answers for product sense, prioritization, and stakeholder-style prompts.
View role pageBehavioral
Refine STAR-style stories for leadership, conflict, and collaboration behavioral rounds.
View role pageFrequently asked questions
- Are these mock interviews really free?
- Yes. Choosing a role below is free for logged-in users; we link you to Zavnia’s mock interview experience using your session token so you can practice without extra signup steps.
- Do I need an account to start?
- You need to sign in so we can securely pass your auth token to the mock interview app. If you’re not logged in, you’ll be redirected to the login page first.
- How do mock interviews relate to your interview question guides?
- Use our topic guides to study, then run a mock interview for the same stack-links are on each role card so you can prep and practice in one flow.
- What roles are supported?
- We cover Node.js, React, Python, DevOps, System Design, SQL, Java, ML/AI, Product, and Behavioral sessions-each tuned to common interviewer prompts.