code.rajkar.dev
Launching July 17, 2026

Watch them
think.

A shared code editor built for technical interviews — live cursors, instant session control, and zero setup for the candidate. Share a link, watch them solve it with you in the room.

No account for candidates · 6-character passcode · in-browser execution

RKAK
LIVE
1function twoSum(nums, target) {
2 const seen = new Map();
3 for (let i = 0; i < nums.length; i++) {
4 const need = target - nums[i];
5 if (seen.has(need)) {
6 return [seen.get(need), i];
7 }
8 seen.set(nums[i], i);
9 }
10}
Raj
Public beta opens in
July 17, 2026
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What it is

Coding interviews that feel like pair programming.

01

Live cursors

See every keystroke and cursor as it happens — Google-Docs style, in a real code editor. No screen share, no guessing.

02

Zero candidate setup

Share a six-character passcode. They're coding in seconds — no account, no install, no email verification.

03

Instant session control

Start, freeze, and end sessions in one click. Their work is auto-saved every keystroke, so nothing is ever lost.

Built onNext.jsPartyKitSupabaseCodeMirror 6SandpackTypeScript

Built by Raj Kar after CodeSandbox removed live collaboration — because watching a candidate type over a screen share is no way to run an interview.