Stop spending 33% of your week interviewing.

An LLM-powered voice agent runs your first-round interviews - probing reasoning, flagging inconsistencies, scoring against your rubric. You meet only the pre-vetted top 20%.

Book a Demo →See How It Works

voice agent · listening

How it works

One engine, Four moves.

roundz · live interview

Data Structures & Algorithms

◷ 54:49

Problem Statement

A 0-indexed array derived with length n is derived by computing the bitwise XOR (⊕) of adjacent values in a binary array original.

Given an array derived, determine whether a valid binary array original could have formed derived. Return true if such an array exists or false otherwise.

Example 1:

Input:  derived = [1,1,0]
Output: true
Explanation: A valid original
array is [0,1,0].

Example 2:

Input:  derived = [1,1]
Output: true
Explanation: A valid original
array is [0,1].

Example 3:

Input:  derived = [1,0]
Output: false
Explanation: There is no valid
original array.

Constraints:

n == derived.length
1 <= n <= 10^5
The values in derived are either 0 or 1.

Agent Audio

Language :

Status

Clientready

Agentready

Devices

Audio Output

💬 Conversation

21:06:44

assistant…in your own words to ensure we're on the same page.

21:07:32

userOkay. Sure.

01 · Voice screening

AI agents that interview like your best engineer.

A live voice agent runs the full coding round - problem statement, real-time editor, spoken follow-ups and a running transcript - probing the reasoning behind every answer, not just the final output.

Try a free mock →

roundz · employer dashboard

Active Job Racks

Candidates Sourced

2048

Interviews Scheduled

—

Avg. Time-to-Hire

12 days

Active Job Racks

Overview of your current recruiting processes

Position	Location	Status	Cand.
Full Stack Engineering - Entry	Remote	Sourcing	1929
Data Engineering - Entry	Remote	Sourcing	50
Software Development Engineer - Entry	Remote	Sourcing	50
Marketing executive	Mohali	Sourcing	0
Full Stack Dev	Remote	Sourcing	0

Upcoming Interviews

Active PENDING & IN_PROGRESS interviews

Noah Patel

Full Stack Engineering - Entry

25/6/2026 9:05 AM

02 · Job manager

One dashboard to post, screen and track.

Spin up job racks, watch candidates flow through sourcing and screening, and filter your pipeline by stage, match score and hire signal - all from one board.

roundz · candidate feedback

Full Stack Engineering - Entry

⛃ Filters✓ Completed 33 ▾% All Match ▾👍 Hire ▾

Interview Loop Progress

3/3 Rounds Complete

✓ DS & Algorithm Coding Workflow

✓ Low Level Design Interview Workflow

✓ Full Stack Engineering Workflow

✉ et•••••@gmail.com📞 +91 ••••• ••584

Key Matches

HTMLCSSJavaScriptReactAngularNode.jsSQL

03 · Auto-evaluated feedback

Auto-scored feedback for every round - then you decide.

Every completed loop rolls up into strengths, growth areas and a hire signal. Open any round for the full technical and behavioral assessment - then make the call.

roundz · interview loops

⟳ Interview Loops

Manage interview loops — sequences of interview rounds for different roles

🔍 Search loops by name or description…

Loop Name	Rounds	Duration	Completion
Data Engineering - Entry Data Engineering - Entry	⊟ 2 rounds	◷ 115 min	🗓 7 days
Full Stack Engineering - Entry Full Stack Engineering - Entry	⊟ 3 rounds	◷ 175 min	🗓 7 days
Marketing executive - Screening Loop Auto-generated screening loop for Marketing executive	⊟ 1 rounds	◷ 45 min	🗓 1 days
Full Stack Dev - Screening Loop Auto-generated screening loop for Full Stack Dev	⊟ 1 rounds	◷ 45 min	🗓 3 days
Data engineer - Screening Loop Auto-generated screening loop for Data engineer	⊟ 1 rounds	◷ 45 min	🗓 3 days
AWS Devloper - 008 - Screening Loop Auto-generated screening loop for AWS Devloper	⊟ 1 rounds	◷ 45 min	🗓 5 days

04 · Interview loops

Design the whole interview loop, round by round.

Build a hiring loop from a library of ready-made rounds - coding, system design, behavioral and more. Click rounds in, reorder them, set the timeline and reuse the loop across roles.

10x

Faster screening

80%

Less CTO time

92%

Fraud detection

100

applicants

Top 20%

to your team

AI runs the full loop - Technical and Non-Technical rounds - scores every candidate, and gives you the hiring signal. You make the final call.

What our users say

What Our Users Say

Real feedback from professionals who found success with Roundz

"I just went through the post and the article looks great. It really dives deeper into the rounds and expectations in each one of them. Loved the idea and the way overall experience has been structured!"

Vanshika Shukla

Tech Professional

"Roundz is a unique product - while others offer interview prep, none specialize in aggregating interview experiences like you do. A truly valuable niche in job hunting."

Vivek Shenoy

Industry Expert

"The insights into Google's interview process were spot-on, especially around structured problem-solving. This will definitely help in my current interviews."

Vamsi Karuturi

Engineer at Google

"Your content is quite valuable and great. I'm following every post of yours - keep up the good work!"

Sanjai Damavarapu

Tech Community Leader

Vanshika Shukla

Tech Professional

"Roundz is a unique product - while others offer interview prep, none specialize in aggregating interview experiences like you do. A truly valuable niche in job hunting."

Vivek Shenoy

Industry Expert

"The insights into Google's interview process were spot-on, especially around structured problem-solving. This will definitely help in my current interviews."

Vamsi Karuturi

Engineer at Google

"Your content is quite valuable and great. I'm following every post of yours - keep up the good work!"

Sanjai Damavarapu

Tech Community Leader

Vanshika Shukla

Tech Professional

"Roundz is a unique product - while others offer interview prep, none specialize in aggregating interview experiences like you do. A truly valuable niche in job hunting."

Vivek Shenoy

Industry Expert

"The insights into Google's interview process were spot-on, especially around structured problem-solving. This will definitely help in my current interviews."

Vamsi Karuturi

Engineer at Google

"Your content is quite valuable and great. I'm following every post of yours - keep up the good work!"

Sanjai Damavarapu

Tech Community Leader

Vanshika Shukla

Tech Professional

"Roundz is a unique product - while others offer interview prep, none specialize in aggregating interview experiences like you do. A truly valuable niche in job hunting."

Vivek Shenoy

Industry Expert

"The insights into Google's interview process were spot-on, especially around structured problem-solving. This will definitely help in my current interviews."

Vamsi Karuturi

Engineer at Google

"Your content is quite valuable and great. I'm following every post of yours - keep up the good work!"

Sanjai Damavarapu

Tech Community Leader

"This is informative, well organized and easy to follow. I like the story format as well. Good work."

Mridul Gain

Product Manager

"Even for non-technical roles, Roundz provided valuable insights into company culture and interview styles. Highly recommend!"

Emma Rodriguez

Marketing Manager at Microsoft

"I've reviewed Roundz and it looks really impressive. I truly believe it has the potential to transform the interview experience and make the entire process much smoother and more efficient."

Bharat Heerani

Developer @ Tata Technologies

"The platform feels well-designed and intuitive, especially the dashboard. With added personalization, richer analytics context, and community engagement features like verified contributions, it has strong potential to become an even more impactful and user-centric interview preparation ecosystem."

Keerti Deshpande

Full-Stack & AI Systems Developer

"This is informative, well organized and easy to follow. I like the story format as well. Good work."

Mridul Gain

Product Manager

"Even for non-technical roles, Roundz provided valuable insights into company culture and interview styles. Highly recommend!"

Emma Rodriguez

Marketing Manager at Microsoft

"I've reviewed Roundz and it looks really impressive. I truly believe it has the potential to transform the interview experience and make the entire process much smoother and more efficient."

Bharat Heerani

Developer @ Tata Technologies

Keerti Deshpande

Full-Stack & AI Systems Developer

"This is informative, well organized and easy to follow. I like the story format as well. Good work."

Mridul Gain

Product Manager

"Even for non-technical roles, Roundz provided valuable insights into company culture and interview styles. Highly recommend!"

Emma Rodriguez

Marketing Manager at Microsoft

"I've reviewed Roundz and it looks really impressive. I truly believe it has the potential to transform the interview experience and make the entire process much smoother and more efficient."

Bharat Heerani

Developer @ Tata Technologies

Keerti Deshpande

Full-Stack & AI Systems Developer

"This is informative, well organized and easy to follow. I like the story format as well. Good work."

Mridul Gain

Product Manager

"Even for non-technical roles, Roundz provided valuable insights into company culture and interview styles. Highly recommend!"

Emma Rodriguez

Marketing Manager at Microsoft

"I've reviewed Roundz and it looks really impressive. I truly believe it has the potential to transform the interview experience and make the entire process much smoother and more efficient."

Bharat Heerani

Developer @ Tata Technologies

Keerti Deshpande

Full-Stack & AI Systems Developer

For teams

$555K/year of broken hiring - gone.

→ Voice AI that probes reasoning, not just output
→ Semantic resume matching, not keywords
→ An explainable, rubric-scored report per candidate

For candidates

Walk in already warmed up.

→ 10,000+ real questions, scaled to your seniority
→ DSA, LLD & HLD - code or whiteboard live
→ Honest feedback, on your schedule

Hiring is broken on both sides.
We fixed both.

Pick a time that works for you. We'll walk you through how Roundz screens your first candidate in under 24 hours.

Book a demo

See Roundz in action

✓ Live walkthrough of AI voice screening
✓ Custom rubric and loop setup
✓ Integration with your hiring workflow
✓ No commitment, no credit card

Or try a free mock instead

Select a date

Pick a day and we'll show you available time slots.

July 2026

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Stop spending 33% of your week interviewing.

One engine, Four moves.

AI agents that interview like your best engineer.

Active Job Racks

Upcoming Interviews

One dashboard to post, screen and track.

Full Stack Engineering - Entry

Auto-scored feedback for every round - then you decide.

⟳ Interview Loops

Design the whole interview loop, round by round.

What Our Users Say

$555K/year of broken hiring - gone.

Walk in already warmed up.

Hiring is broken on both sides.We fixed both.

See Roundz in action

Hiring is broken on both sides.
We fixed both.