> ## Documentation Index
> Fetch the complete documentation index at: https://intervyo.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Cookbook: Backend Engineer

> A standard backend hiring loop — Screen → System Design → Coding — with a rising pass bar and a human sign-off before the final.

A solid, reusable loop for hiring **backend engineers**: a quick screen, a
system-design Round, and a coding Round, with the bar rising as candidates
advance and a human approving before the last step.

## Step 1 — Build the Interviewers (once)

| Interviewer                   | Persona                                                   | Scores on                                 |
| ----------------------------- | --------------------------------------------------------- | ----------------------------------------- |
| **Friendly Screener**         | "Hi, I'm Riya — a few quick questions to start."          | Motivation, communication, basics         |
| **System Design Interviewer** | "I'm Alex, a staff engineer — let's design a system."     | Scalability, data modeling, trade-offs    |
| **Coding Interviewer**        | "I'm Sam — we'll work through a coding problem together." | Correctness, clarity, complexity, testing |

<Tip>
  Reuse the **Friendly Screener** across every Role — backend, frontend, data,
  anything. That's the point of Interviewers being separate from Roles.
</Tip>

## Step 2 — Create the Role

**Role:** `Senior Backend Engineer`

* **Objective:** "Can this person own backend system design and ship correct,
  maintainable services?"
* **Skills:** `Go`, `PostgreSQL`, `Distributed Systems`, `APIs`, `Kafka`
* **Use case:** Hiring

## Step 3 — Add the Rounds

| # | Round         | Interviewer               | Pass mark | On pass                   |
| - | ------------- | ------------------------- | --------- | ------------------------- |
| 1 | Phone Screen  | Friendly Screener         | 60        | Auto-advance              |
| 2 | System Design | System Design Interviewer | 75        | Require reviewer approval |
| 3 | Coding        | Coding Interviewer        | 80        | Final                     |

<Note>
  The **rising pass mark** (60 → 75 → 80) filters progressively, and **reviewer
  approval** before the final keeps a human in the loop where it matters.
</Note>

## Step 4 — Add candidates and go

Add candidates to the Role (or share its apply link). Upload resumes so the AI
can reference real projects — and so the applications page can rank candidates by
interview score with **CV match** as the tiebreaker.

<Tip>
  Turn on **coding** for the Coding Round so candidates write and run real code
  during the interview, not just talk about it.
</Tip>

## Variations

* **Junior role?** Drop the System Design Round and lower pass marks (50 / 65).
* **Take-home instead of live coding?** Swap the Coding Round's type to an async
  assessment and let the Coding Interviewer review the submission.