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Session · Senior Software Engineer
29:42
Interviewer
Thinking
Let’s start with your approach. How would you solve this before writing code?
solution.ts
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)) return [seen.get(need), i];
6 seen.set(nums[i], i);
7 }
8}
TypeScriptLn 1, Col 1Running
AnalysisTime O(n)Space O(1)Optimal
Quality
8.8
Live session previewtwoSum · O(n)
Built for serious software engineers.
01
AI interviewer
02
Real coding problems
03
Real-time feedback
04
Monaco editor
05
Performance analysis
/ 01The system

Everything you need to simulate the real interview.

Not a compiler with a chatbot bolted on. A complete loop: an interviewer that probes your thinking, a real editor, and a debrief that shows where your solution breaks.

AI interviewer

Evaluating

An interviewer that evaluates more than your final answer. It follows your reasoning, questions your choices, and scores the whole performance.

Problem understanding
Approach & trade-offs
Time & space complexity
Edge cases
Implementation quality
Communication

Performance analysis

Every submission is measured across the dimensions interviewers actually care about.

Time complexity92
Space complexity78
Code quality86
Edge cases64

Real coding environment

The same Monaco editor that powers VS Code, with eight languages and syntax intelligence. No toy sandbox.

solution.tsMedium
1const merge = (a, b) => {2  return [...a, ...b].sort((x, y) => x - y);3}
TypeScriptUTF-8Ln 2, Col 10

Interview history

Every session is saved with its code, feedback and timing, so you can review your progress over time.

MediumMerge Intervals
86
HardLRU Cache
72
MediumGroup Anagrams
91
/ 02Built for developers

A workspace that works the way you do.

The little things that make practice feel like real work, not a quiz box.

solution.tsRun against examples
1function twoSum(nums, target) {
2 const seen = new Map();
3 // ...your solution
4}
Run pass fail8 languages
/ 03How it works

Three steps from cold start to clear feedback.

01

Choose your challenge

Set the company, role and experience level. MockOffer generates a fresh, on-pattern problem tuned to that bar.

02

Solve under pressure

The clock runs while you work in a real editor. The interviewer nudges your thinking without giving away the answer.

03

Get an honest debrief

Correctness, complexity, code quality and edge cases, plus exactly what to fix and what to practice next.

InterviewReady

Your next interview starts here.

Think clearly. Code precisely. Know exactly what to improve before it counts.