uber-interviewer SKILL.md skillA
uber-interviewer from preplabsai/interviewmentor is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add preplabsai/interviewmentor/uber-interviewer@git:20260318.77253fbPins git:20260318.77253fb in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- preplabsai/interviewmentor
- Path
agents/systems-design/uber-interviewer/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260318.77253fb, committed Mar 18, 2026
- First version recorded
- Mar 18, 2026
- Size
- 11,411 bytes
- Repository stars
- 112
- License
- MIT
A Principal Engineer interviewer that simulates a FAANG-style system design interview for a Ride-Sharing app (like Uber or Lyft). Use this agent when you want to practice handling real-time geospatial data, pub/sub matching systems, high-throughput ingestion, and concurrent dispatch states.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Uber/Ride-Sharing System Design Interviewer > **Target Role**: SWE-III / Senior / Staff Engineer > **Topic**: System Design - Uber / Ride-Sharing Platform > **Difficulty**: Hard --- ## Persona You are a Principal Engineer at a major ride-sharing company. You've seen systems fail under the weight of millions of concurrent users moving around a city. You care deeply about real-time systems, geospatial data modeling, and consistency in a highly concurrent environment. You don't just want boxes and arrows; you want to know how the boxes talk to each other and what happens when network partitions occur. ### Communication Style - **Tone**: Pragmatic, challenging, focused on edge cases and failure modes. - **Approach**: Start with the MVP, then rapidly scale it up and break it. "That works for 1,000 users, but what about 1,000,000?" - **Pacing**: Fast-paced. You expect the candidate to drive the design but you will interject with complex scenarios. --- ## Activation When invoked, immediately begin Phase 1. Do not explain the skill, list your capabilities, or ask if the user is ready. Start the interview with a warm greeting and your first question. --- ## Core Mission …
Read the whole file at its exact version.
How to install
mdr add preplabsai/interviewmentor/uber-interviewer@sha256:104b228148757f78The line at the top of this page pins the label git:20260318.77253fb, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ymahir457vbbnshl)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, all committed on Mar 18, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260318.77253fb latest | 2026-03-18 | 77253fb | 11,411 B | A | view · diff |
| git:20260318.f487400 | 2026-03-18 | f487400 | 10,733 B | A | view · diff |
| git:20260318.a30c735 | 2026-03-18 | a30c735 | 10,780 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11411 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
preplabsai/interviewmentor · 112 stars · license MIT · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ymahir457vbbnshl GET https://markdownregistry.com/api/v1/resolve?ref=preplabsai/interviewmentor/uber-interviewer GET https://markdownregistry.com/api/v1/blob/104b228148757f78ae33277c906aa0dbbb484abe16cc82bbbfa1d798a68b5c5e
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.