TierOnePrep

What it does

Interactive interview prep for FAANG and AI-era companies (Meta, Anthropic, Nvidia, Google, OpenAI, SpaceX). System design questions are 4-phase simulations of real interviews — vague brief, clarifying questions, architecture, hard follow-ups. Coding questions show algorithms running live with step-by-step visualizations. Written by engineers who've conducted hundreds of interviews at top companies. 12 free questions, no credit card.

Interactive system design and coding interview prep modeled on real interview patterns at Google, Meta, Amazon, Anthropic, OpenAI, and Nvidia. Start practicing free.

Interview prep for every software engineer — whether you're targeting a startup, Microsoft, Uber, or the top of big tech. Built on the interview patterns these companies actually use. Crack FAANG · Conquer the AI frontier — Google, Meta, Amazon, Anthropic, OpenAI, and Nvidia are our specialty. Design a chess engine core for two human players. Support the full rules: all piece movement, castling, en passant, promotion, check, checkmate and stalemate, plus takeback and the draw rules for threefold repetition and fifty moves. The board is standard 8x8. A search engine is not required now, but the design should not make one impossible later. The user interface and the clock are out of scope.…from tieroneprep.com

• 
  FAANG2024 · asendia.ai · ▲511

  Land your dream job 10x faster with Sarah, your AI job agent

• 
  I'm writing a free, illustrated textbook for system design interviews2021 · docs.google.com · ▲67

  📕 SystemDesign.org Textbook for System Design ✅ Step-by-Step Illustrated Guide ✅ Curated Questions ✅ + pages ✅ Completely Free 🤑 📖 Document link: systemdesign.org Why are we writing this book? After talking to hundreds of engineers and candidates at FAANG companies, we fo...

• 
  I couldn't afford interview prep, so I built a free alternativeSep 2026 · learningto.co · ▲41

  Learning to pass the Google interview? Master data structures, algorithms, and system design with interactive visualizations, a code playground, and AI feedback.

• 
  interviewing.io 2.02020 · interviewing.io · ▲18

  anonymous technical interview practice with FAANG engineers

• 
  Prepper2025 · prepper-frontend.onrender.com · ▲12

  AI UI for Behavioral,Technical System Design interviews

• 
  ArchqoMay 2026 · archqo.com · ▲2

  AI-Assisted System Design Practice for |

• 
  /dev/null▲490

  a social network for devs

  Dev tools · 4d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 29d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 27d ago · github.com

• 
  Run full iOS 16.5 firmware on Android Devices▲403

  Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.

  Dev tools · 16h ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 24d ago · openbot.run

• 
  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 21d ago · talanoa.email

• IR
  I replaced a $120k bowling center system with $1,600 in ESP32s▲2,935

  I might be the only SRE on Earth with his own bowling center. It's a more in-depth gig than you'd think. My family and I bought an abandoned 8-lane bowling center in the rural mid-west. In our small town there weren't many recreation options for families. You've heard of a food desert? This is an R&R desert. It had been abandoned for a good reason. The roof leaks, the electrical system was constantly surging, and my 70-year-old bowling equipment (still) doesn't work perfectly. The system that keeps your score is particularly interesting to me. It's the thing you watch during your game, but…

  Life & fun · Jul 2026

• 
  Elevators▲1,680

  How elevators push your buttons

  Life & fun · Jul 2026 · john.fun

• 
  18 Words▲1,160

  Play 18 Words, the free daily word puzzle. The official home is 18words.com. Tap Play now to open today

  Life & fun · Jul 2026 · 18words.com

• BA
  Bento - An entire PowerPoint in one HTML file (edit+view+data+collab)▲1,033

  Over the past few months, our team has been building more and more slidedecks using web frontend technologies with coding harnesses like Claude Code, but a common complaint is to make even small edits we need to edit the code either manually or via the harness. To avoid this loop, I ended up creating Bento, a single HTML file with everything you need in a slide tool including animations and shared editing. There's no install or cloud login, everything works offline. The default deck is around 560 KB and it doesn't need to fetch anything once you got it. Open it in a browser and then you can…

  Dev tools · Jul 2026 · bento.page

• 
  Getting GLM 5.2 running on my slow computer▲937

  A few days ago I found myself trying out GLM 5.2 and was really positively impressed. The capabilities and security I was getting from this LLM are similar to those I've gotten from models like Claude or GPT, and this really surprised me. But then I thought, "I wonder how it would work on a normal computer like mine," and above all, "I wonder if it would work without going into OOM on a computer like mine." So I started working with the help of agents to test this possibility. I started converting the model to int4, understanding MTP usage, and if possible implementing DSA for long context.…

  AI · Jul 2026 · github.com

• 
  OpenSEO▲928

  Hello! For the last 2 months, I've been building OpenSEO. It's a user friendly UI wrapping the DataForSEO API which has high quality SEO data for keywords, backlinks, AI SEO and competitor research. Instead of paying $100+ per month, you buy DataForSEO credits and pay only for usage. The coolest thing about the project so far has been hearing about what people are building on top of it. People are using coding agents to quickly integrate with Google Search Console, Google Ads and building their own AI SEO and reporting features. Many were already building their own custom solutions around…

  Dev tools · Jul 2026 · openseo.so