AI Mock System Design Interview
Master System Design Interviews Before the Real One
AI Mock System Design Interview launched on January 25, 2026 with 8 votes, #1,339 of 14,584 launches that month and more than 90% of that year's launches.
What it does
Why do smart engineers fail system design interviews? It's not due to a lack of technical knowledge—it's about how they perform during the interview. SystemDesignTrainer.com offers a realistic system design interview simulator that provides actionable feedback to help engineers excel in system design interviews at Big Tech companies.
AI-powered system design mock interviews with instant feedback. Realistic FAANG scenarios, expert evaluation on every architecture decision. Start free — no credit card required.
The AI system design simulator built for serious interview prep. Practice with realistic mock interviews, get instant feedback on architecture decisions, and ace your next interview at FAANG and top tech companies. 45-minute timed sessions with an AI interviewer that interrupts, challenges, and applies real interview pressure. Monitors if you covered requirements, discussed scale, proposed APIs, and identified trade-offs in real-time. Detailed performance breakdown across multiple dimensions. Know exactly what you missed and how to improve. Practice with curated cases based on real FAANG interviews. URL shortener, social feeds, streaming, and more. Visual diagram editor to draw architecture…from systemdesigntrainer.com
Does a similar job
all alternatives →
interviewing.io is out of beta and open to engineers of all levels2020 · blog.interviewing.io · ▲171interviewing.io is now open to all engineers in North America and the UK, regardless of seniority. Get hyper-realistic mock interviews and actionable feedback.
LeetSys2025 · leetsys.dev · ▲7I built a free platform for practicing system design interviews!: https://leetsys.dev. The currently available problems will always be listed as free! It lets you chat with an interviewer in real time as you work through a system design problem. It also gives you detailed feedback at the end of the interview that you can use to assess your performance and see where you can improve. Please try it out and let me know what you think!
MockinglyAI - Interview Practice with AI2025 · mockingly.ai · ▲6An AI interviewer for software engineers to practice with on-demand mock system design interviews.
More life & fun this month
the category →
A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.
Life & fun · 2d ago · permit.petercai.com
- IV
Life & fun · 14d ago · tanzaniaeducationproject.org
Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.
Life & fun · 15d ago · bigwords.page
Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.
Life & fun · 8d ago · guitoro.com
Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.
Life & fun · 13d ago · carrierexplode.com
Life & fun · 22d ago · space.bl2.net
Source: Product Hunt launch ↗
Launched alongside, January 2026
the whole month →- IN
Hey HN! I wanted to share something I built over the last few weeks: isometric.nyc is a massive isometric pixel art map of NYC, built with nano banana and coding agents. I didn't write a single line of code. Of course no-code doesn't mean no-engineering. This project took a lot more manual labor than I'd hoped! I wrote a deep dive on the workflow and some thoughts about the future of AI coding and creativity: http://cannoneyed.com/projects/isometric-nyc
AI · Jan 2026 · cannoneyed.com
Automatic AI-powered code reviews the moment you open a PR
Dev tools · Jan 2026 · kilo.ai
