The HackerRank for
Product Thinking
AI-scored system design assessments that test how candidates think about building products — not how they code. Paste a JD, get tailored questions, receive a detailed scorecard.
No credit card required. Free for up to 3 assessments/month.
Strong problem framing with thorough requirements analysis. Excellent system decomposition with clear component boundaries.
Tradeoff analysis could be deeper — consider pushing on second-order effects and alternative approaches.
Recommendation: Proceed to final round
Coding tests miss the point
In the age of AI, test how people THINK — not how they type. The best engineers in 2026 aren't the fastest coders. They're the best product thinkers.
Coding tests are commoditized
AI writes better code than most candidates. Testing implementation speed tells you nothing about their ability to design systems.
Resume screening misses signal
Years of experience and brand-name companies don't predict who can reason about complex product problems under ambiguity.
Interviews are inconsistent
Different interviewers ask different questions and evaluate on different criteria. Your hiring decisions are noisy.
Bad hires are expensive
A wrong hire costs 6-12 months of salary. Better evaluation at the top of the funnel saves hundreds of thousands.
Three steps to better hiring
From job description to scorecard in minutes. No interviewer scheduling, no inconsistent evaluation, no coding tests.
Paste a Job Description
Drop in any JD and our AI analyzes the role to generate tailored system design questions. Senior PM? Backend engineer? Product designer? Every question is role-specific.
Candidates Design Systems
Candidates answer structured system design questions covering requirements, high-level design, low-level design, tradeoffs, and scalability. AI follow-up questions probe deeper.
AI Scores with a Detailed Scorecard
Our LLM-as-a-Judge pipeline evaluates each response across 5 dimensions of product thinking. You get a weighted score, per-dimension breakdown, and actionable recommendations.
Test how candidates work with AI
The best engineers in 2026 do not just write code — they collaborate with AI to build deliverables. Our AI Collaboration Mode tests prompt engineering, iterative refinement, and critical evaluation of AI output.
Freelancers waste 5-8 hours/week creating invoices manually. They need a tool that auto-generates invoices from tracked time entries and sends payment reminders.
Solo freelancer: 1-3 active clients, bills hourly, uses Toggl for time tracking, wants Stripe integration...
1. Auto-generate invoice from time entries
2. Send invoice via email with payment link
3. Dashboard showing outstanding payments...
How AI Collaboration Assessment works
Candidate gets a scenario
A realistic product or engineering challenge with a structured deliverable template to fill out.
They collaborate with AI
Candidates use a limited number of prompts to work with an AI assistant. Every interaction is recorded.
AI evaluates the process
We score prompt quality, iterative thinking, domain knowledge, critical evaluation, and the final output.
8 assessment types — every deliverable that matters
Each type tests a different facet of how candidates think, communicate, and work with AI.
What we score in AI Collaboration Mode
Five dimensions that measure how effectively a candidate works with AI tools.
Free for up to 3 assessments per month. No credit card required.
Five dimensions of product thinking
Every response is evaluated across five research-backed dimensions. Weighted scoring produces a single score with a clear hiring recommendation.
Problem Framing
Can they scope a problem before solving it? Do they clarify requirements, identify constraints, and define success metrics?
System Decomposition
Can they break complex systems into well-bounded components with clear interfaces and logical data flow?
Tradeoff Analysis
Do they consider alternatives, articulate tradeoffs explicitly, and justify decisions with context-specific reasoning?
Scalability & Edge Cases
Do they think about 10x growth, failure modes, graceful degradation, and operational concerns?
User-Centric Design
Do technical decisions serve the user? Do they consider latency, UX during failures, and product feature enablement?
Maps to a clear recommendation: Strong Hire, Hire, Lean No, or No Hire.
Stop wasting engineer hours on interviews
Your senior engineers spend 8-12 hours per week conducting system design interviews. AssessAI gives you the same signal without the time cost.
Save 10+ hours per role
No more scheduling system design interviews with senior engineers. Send a link, get a scorecard.
Consistent evaluation
Every candidate is scored on the same rubric by the same AI. No interviewer bias, no calibration drift.
Deeper signal than coding tests
System design assessments reveal how candidates think about building products — the skill AI can't replace.
Results in minutes
AI generates questions and evaluates responses instantly. Screen candidates at the top of the funnel, not the bottom.
Role-specific questions
Questions are generated from the actual job description. Every assessment is tailored to the role you're hiring for.
Actionable recommendations
Get a clear hiring recommendation with per-dimension scores and specific feedback — not just a pass/fail.
- Senior engineers spend 8-12 hrs/week interviewing
- Inconsistent evaluation across interviewers
- 2-3 week scheduling delays
- Coding tests miss product thinking signal
- Interviewer fatigue = noisy decisions
- Automated assessments — zero engineer time
- Consistent 5-dimension rubric for every candidate
- Results in under 5 minutes
- Tests product thinking, not just coding
- Objective AI scoring eliminates bias
Start free, scale as you grow
No credit card required. Upgrade when you need more capacity.
Free
Perfect for trying out AssessAI
- 3 assessments per month
- 5 candidates per assessment
- AI Assistant for question generation
- AI-powered evaluation
- Detailed scorecards with dimension breakdown
- Community support
Pro
For teams hiring at scale
- Unlimited assessments
- 50 candidates per assessment*
- Full question bank access
- AI Assistant for question generation
- Detailed scorecards with dimension breakdown
- Candidate comparison view
- Custom assessment instructions
- MCP support (coming soon)
- Priority support
Enterprise
For organizations with custom needs
- Everything in Pro
- SSO / SAML authentication
- API access for integrations
- Dedicated support
- Custom pricing
*Need more than 50 candidates? Contact us for custom limits. All plans include AI-powered evaluation and 5-dimension scoring rubric. Need something else? Let's talk.
Hiring insights & best practices
Learn how to evaluate product thinking, run better system design interviews, and build stronger engineering teams.
Beyond Coding Tests: How AI Collaboration Assessments Are Changing Hiring
Coding tests measure the wrong thing. AI collaboration assessments test how candidates work WITH AI to build real deliverables — the skill that actually matters in 2026.
Why Product Thinking Matters More Than Coding in the Age of AI
With AI coding assistants handling implementation, the real differentiator is how engineers think about building products. Here's why product thinking is the new competitive advantage.
How to Evaluate System Design Answers: A Rubric-Based Approach
A practical framework for scoring system design interview responses using a 5-dimension rubric. Stop relying on gut feel — start evaluating consistently.
Start Assessing Product
Thinking Today
Join forward-thinking companies that evaluate how candidates think — not how they code. Set up your first assessment in under 2 minutes.