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Early access — Q2 2026

DSA Coding Rounds
AI-First Hiring
Built for How Engineers Work Today

One link. One real task. One scorecard. No rounds.

What you see in the scorecard

How they break down problemsHow they use Cursor, Copilot & ClaudeWhat they actually ship

No DSA. No trick questions. Just real work.

We'll invite you to the beta when it's ready.

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Book a 15-min call — help shape what we build
AI Evaluating...
RS
Rahul Sharma
Senior Engineer · Full-Stack
> Challenge
Build a rate-limited API with exponential backoff using AI tooling. 
CursorClaudeCopilot
14m 04s
> add rate limiting with exponential backoff
Cursor generating...
async function fetchWithRetry(url) {
  for (let i = 0; i < MAX_RETRIES; i++) {
    const res = await fetch(url);
    if (res.status !== 429) return res;
    await sleep(BASE_DELAY * 2 ** i);
  }
}
> add error logging and tests
PASS · 3 tests passed
AI Evaluation
Problem Solving87%
AI Prompting92%
Execution Speed94%
Iteration Quality78%
88
88 / 100Strong Hire
Evaluated in 4 min

“Strong engineer who solves real-world problems efficiently, uses AI effectively, and delivers production-ready code.”

The Solution

Stop Guessing.
Start Seeing.

DSA rounds were built for a world before AI coding agents. PromptLens tests what actually matters today — how engineers solve real problems with the tools they use every day.

The Old Way

DSA Rounds + Interview Panels

✕

DSA rounds test memorization, not engineering ability. You lose great candidates who can’t invert a binary tree on a whiteboard.

✕

HR sits through hours of interviews, coordinates panels, and still can’t tell who can actually build.

✕

No data to share with hiring managers — just “seemed good” vs “didn’t seem good.”

The PromptLens Way

One Link. One Task. One Scorecard.

✓

Share a link. Candidates solve a real problem using Cursor, Copilot, or Claude — their choice.

✓

HR doesn’t need to sit in. The AI watches every step and generates a scorecard automatically.

✓

Hiring managers get a clear report with scores, key moments, and a recommendation. No debrief needed.

How It Works

From Task to Hire —
in Three Steps

No interview panels. No HR sitting through rounds. Just share a link and get a scorecard.

1

Share a Link

Pick a role-matched challenge and send the candidate a link. That’s it — no scheduling, no coordination, no one needs to sit in.

2

They Solve It with AI

Candidates open the link and solve the problem using their favorite AI coding agent — Cursor, Copilot, Claude, or whatever they use daily. We record how they think, prompt, and iterate.

3

You Get the Scorecard

AI evaluates the entire session and delivers a scorecard to HR and the hiring manager. Scores, key moments, and a hire/no-hire signal — no debrief meeting needed.

Problem Solving
AI Prompting
Execution Speed
Iteration Quality
What We Evaluate

Not Just a Score —
A Complete Picture

Every candidate is evaluated across four dimensions that tell you exactly how they work — not just what they deliver.

01

Problem Understanding

Did they understand the task before jumping in?

We track how the candidate breaks down the problem, what clarifying questions they ask, and whether they identify edge cases before writing a single line of code.

02

AI Usage Approach

Are they using AI effectively — or just copy-pasting?

We analyze prompt quality, context-setting, and whether they guide the AI with clear constraints. Strong candidates treat AI as a collaborator, not a slot machine.

03

Iteration Process

Do they improve their work — or give up after the first try?

We measure how candidates respond to incorrect AI output: do they debug, refine their prompt, and converge on a better solution? Or do they re-roll the same vague request?

04

Final Output Quality

Is the end result something your team would actually ship?

We evaluate code correctness, error handling, test coverage, and whether the solution accounts for real-world conditions like failure modes and edge cases.

Sample Scorecard

Not Your Gut Feel —
Actual Proof

This is what lands in your inbox — not a vague interview summary. Every dimension scored, key moments timestamped. Forward it to the hiring manager and skip the debrief. This is what replaces the DSA round.

PromptLens — Candidate Report
Candidate
Rahul Sharma — Senior Engineer
Challenge: Rate Limiter Debug + Backoff · 14 min session
88
Strong Hire
Top 15% of candidates
PASS·3 tests passed
AI Evaluation
Problem Solving87%

Identified the root cause before jumping to fixes. Broke the problem into clear steps and solved each systematically.

AI Prompting92%

Used clear, context-rich prompts. Avoided vague instructions and guided the AI step-by-step.

Execution Speed94%

Delivered a working solution in 14 minutes. Moved quickly from diagnosis to implementation and testing.

Iteration Quality78%

Adjusted approach after the first attempt failed. Improved prompts based on AI output instead of repeating the same attempt.

Key Moments
2:14Asked AI to explain existing code before making changes
5:41Caught incorrect AI suggestion and corrected course
8:02Added error handling the AI missed — shows real-world judgment
11:30Wrote targeted test covering the specific failure mode
Get Started

Hire With Proof. Not Hope.

One real task. One scorecard. That's all it takes to hire with confidence.

PromptLens is in closed beta. Get early access for your team.

We'll invite you to the beta when it's ready.

or
Book a 15-min call — help shape what we build