Take a free mock interview online for DSA, LLD, system design and behavioural rounds. An AI interviewer runs the round and you get scored feedback at the end of every one.
The four rounds that make up a software engineering loop. Pick the one you are weakest at first.
670 coding problems in Java, Python or C++, run against real test cases.
Model a parking lot, elevator or vending machine, then defend it when the requirement changes.
Design WhatsApp, a food delivery app or a URL shortener out loud, and defend the trade-offs.
Practise STAR answers to the leadership and conflict questions every loop includes.
Each free mock interview is a full round, not a demo. You get a real interview problem, a clock, and an interviewer that asks you to explain your approach and pushes on the weak points - the follow-up that a question bank cannot give you.
When you finish, a scored feedback report breaks down how you did and lists the specific things to work on. Take the same problem again to see the score move, or move on to the next one. There is no cap on how many free interviews you take.
Practising this way is how the real round stops being the first time you have explained a solution out loud under time pressure. Most people find that a handful of free mock interviews is enough to see where they lose marks.
One click with your Google account. No payment details at any point.
DSA, LLD, system design or behavioural - and a specific problem, or let the interview pick.
Work through it as you would on the day: around 45 minutes, against the clock.
A scored report shows what went well and what to fix. Then retake it or try the next problem.
The free rounds cover practice. Book a live interviewer when you want a person to probe your answers.
| Free AI mock interview | 1:1 with an engineer | |
|---|---|---|
| Price | ₹0 | ₹499 per interview, ₹899 for two |
| Credit card needed | No | Pay once at booking |
| DSA, LLD, HLD and behavioural rounds | ||
| Scored feedback | Instant, after every interview | Written by your interviewer |
| How many | As many as you like | One session per purchase |
| Live engineer asking follow-ups | ||
| When | Any time, 24/7 | A slot in the next 7 days, on Google Meet |
Not sure where to start? A 15-minute guidance session (₹149) gets you a preparation plan from an engineer. See 1:1 sessions
Yes. AI mock interviews on InstaMock are free for DSA, LLD, system design and behavioural rounds, with scored feedback on every one. There is no credit card, no trial period and no limit on how many you take.
No. You sign in with your Google account and start straight away. Payment details are only ever asked for if you choose to book a live 1:1 session.
Free mock interviews are run by an AI interviewer and give you instant scored feedback, as often as you want. A 1:1 session is a live 60-minute interview with a working engineer who asks follow-up questions and writes your feedback; it costs ₹499, or ₹899 for two.
Four rounds: a DSA coding round with 670 problems, a low level design (LLD) round, a system design (HLD) round, and a behavioural round. Each has its own problem set and feedback.
Around 45 minutes, which matches most real technical rounds. You can stop early and come back to a problem later.
Yes. The same free rounds suit SDE-1 and campus placement preparation - start with the DSA mock interview, since the coding round is the first filter at most companies, then add LLD.
The practice rounds are free for every company page - Amazon, Google, Microsoft, Meta and others - and each page explains how that company runs its loop so you can practise the right rounds.