# CollabCodeTech/backend-challenges

A public list of open-source challenges from jobs around the world

Repository: https://github.com/CollabCodeTech/backend-challenges
Canonical: https://ross.abutalabs.com/products/backend-challenges
License: MIT
License Family: permissive
Topics: backend-challenges, jobs, challenges, coding-challenges, interview-test, job-challenge, knowledge
Last push: 2026-02-04T00:02:22+00:00

## Health v2 (maintenance only)
Score: 62/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 65, release rhythm 35, longevity 100
- inputs: {"age_days": 2613, "days_push": 211, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 9984, forks 678 (observed 2026-08-28T04:10:39.167666+00:00)

## What it is
A curated public list of open-source backend coding challenges used by companies worldwide for job interviews. It catalogs challenges by company and tech stack with links to each test repository.

## Use cases
- find backend coding challenges for interview practice
- prepare for backend developer job interviews
- practice real-world take-home assignments from companies
- find coding tests by tech stack like Node.js or Java
- discover open-source technical tests used in hiring

## When to choose
- you are preparing for backend developer interviews
- you want realistic take-home challenge examples
- you want challenges filtered by specific stacks or languages

## When to avoid
- you need a tutorial or structured learning course
- you are looking for frontend or mobile challenges
- you need an interactive judge or automated grading

## Facets
- artifact type: learning-resource
- maturity: active
- function: developer-tools, documentation
- domain: developer-tools, tutorials, backend, awesome-lists
- platform: cross-platform
- tags: backend-challenges, interview-preparation, coding-challenges, curated-list, job-hunting

## Member repositories
- CollabCodeTech/backend-challenges (main) score 62

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:39.167666+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:20:01.978442+00:00, confidence not recorded.
  - readme: https://github.com/CollabCodeTech/backend-challenges (fetched 2026-08-28T04:10:39.167666+00:00, sha d459859e034b)
- Data as of 2026-08-30T08:39:29.467469+00:00.