Build your System Design rating.
System design is the hardest skill to measure
Every senior role requires it. Yet the tools to practice and prove it haven't evolved in a decade.
3 out of 4 candidates fail, and nobody tells them why
At top tech companies, only 20-25% of candidates pass technical interviews. Even the strongest performers fail 22% of the time, not for lack of knowledge, but because results shift with the interviewer, the day, and luck. And 41% of those rejected never find out what went wrong.
There's no benchmark for architecture skills
Coding platforms gave algorithms an objective score years ago. But for system design, the skill that defines senior engineers, there's nothing equivalent. No score, no comparison, no way to track progress.
Engineers consistently misjudge their own level
In studies of software teams, 32-42% of engineers rated themselves in the top 5% of their peers. Without objective measurement, self-assessment is unreliable, and so is every resume that says "designed distributed systems."
Until now.
The first platform that makes system design measurable
Archlify replaces vague feedback with a number that means something. Solve real-world challenges, get AI-powered evaluations, and earn an Elo rating that reflects your true architectural ability, not just how well you talk.
Elo Rating for Architecture
The same algorithm that ranks chess grandmasters now ranks engineers on system design. Every evaluation moves your rating based on performance and challenge difficulty.
AI Evaluation in Seconds
Not a rubric check. A deep analysis of scalability, reliability, security, and trade-offs, with specific, actionable feedback on every decision you made.
Verified Portfolio
Your highest-scoring solutions become a public portfolio. A verifiable proof of architectural ability that a resume bullet point can't match.
From challenge to ranking in minutes
A structured workflow that turns practice sessions into measurable progress.
Pick a real-world challenge
Browse a library of curated system design scenarios or spin the Interview Simulation roulette for a true surprise. Practice mode lets you explore freely, while Interview Simulation randomly assigns a challenge you've never seen, just like a real interview.
Design on the infinite canvas
Drag-and-drop infrastructure components: services, databases, caches, queues, CDNs, load balancers. All on a professional diagramming canvas. Draw connections, label protocols, and annotate your design decisions in a written explanation.
Get AI evaluation in seconds
Submit your solution and receive a detailed breakdown in under 30 seconds. The AI scores you across scalability, reliability, security, and trade-off awareness, highlighting specific bottlenecks, missing components, and actionable improvements.
Watch your Elo rating climb
Every evaluation updates your Elo rating. Watch your ranking move as you solve harder challenges and improve your designs. Your best solutions automatically build a public portfolio: a verified record that speaks louder than any resume line.
Built different. Not just better.
Three things Archlify does that no other platform does.
Elo rating for your architecture
Every evaluation updates a competitive Elo rating, the same system that ranks chess grandmasters. Know exactly where you stand relative to engineers worldwide, and watch your score climb as your architecture thinking sharpens.
Deep evaluations, not checklists
Our AI doesn't just check if you added a cache. It analyzes your full architecture across scalability, reliability, security, and trade-off awareness, then gives specific, actionable feedback on every decision you made.
Real-world challenges
Not toy problems. Our challenge library covers actual system design scenarios: payment systems, real-time feeds, distributed caches, search engines. Each comes with production-grade requirements, constraints, and scale targets.
Start free. Upgrade when you're ready.
See where you rank among engineers worldwide. Your first 2 evaluations are free.
Free to start · 2 evaluations included
Sign up and get 2 AI evaluations. Try Practice or the full Interview Simulation. No payment info needed.
Starter
~5 mock interviews
10 evaluations
- 10 AI-powered evaluations
- Full dimension breakdown
- Elo rating updates
- Portfolio contributions
Pro
~25 mock interviews
50 evaluations
- 50 AI-powered evaluations
- Full dimension breakdown
- Elo rating updates
- Portfolio contributions
- Full interview cycle coverage
Expert
~50 mock interviews
100 evaluations
- 100 AI-powered evaluations
- Full dimension breakdown
- Elo rating updates
- Portfolio contributions
- Multiple interview cycles
Credits never expire. · Payments processed securely via Paddle & Stripe.
Questions, answered
Everything you need to know before you start.
Elo is a mathematical rating system originally designed to rank chess players. In Archlify, every AI evaluation affects your Elo score based on your performance and the difficulty of the challenge. High scores on harder challenges earn more Elo points. This gives you a single, meaningful number that reflects your true architectural ability, not just how many challenges you've attempted.
When you submit a solution, our AI analyzes your architecture diagram and written explanation across multiple dimensions: scalability, reliability, security, performance, and trade-off awareness. It identifies specific bottlenecks, single points of failure, missing components, and architectural anti-patterns, then provides actionable suggestions. The entire process typically takes 10–30 seconds.
Yes. Every new account receives 2 evaluation credits at no cost, no credit card required. You can explore the full challenge library, build on the canvas, and submit two complete solutions before spending anything. After that, you can purchase credits in whatever amount fits your practice pace.
Practice Mode lets you browse the full challenge library, costs 1 credit, and is untimed. It earns XP but doesn't affect your Elo rating, ideal for learning. Interview Mode uses a blind roulette: you select a difficulty, spin, and receive a random challenge you've never seen. It costs 2 credits (charged at spin time), includes a countdown timer, and your first attempt impacts your Elo rating. It also features an AI-generated Q&A defense phase.
No. Credits you purchase never expire. Buy at your own pace and use them whenever you're ready, whether that's in a focused practice week or spread across months.
Archlify is built for software engineers at any level who want to get serious about system design: whether you're preparing for upcoming FAANG-style interviews, working toward a senior or staff promotion, or simply want a portfolio that verifiably proves your architectural ability. It's also used by hiring teams and engineering leads who want an objective way to assess candidates.
Interview Simulation offers timed challenges where you don't choose the topic. A roulette draws a random challenge, and you only see the title before starting. Requirements are revealed when the timer begins. This prevents gaming the system by practicing a challenge first, making the Elo score a true measure of your ability. Credits are charged at spin time, so there's no backing out.
Find out where you
actually rank.
Join engineers who are trading vague feedback for a number that means something. 2 free evaluations, no credit card required.
No credit card · 2 free evaluations · Cancel anytime