How to prepare for the backend mock interview — Basic
Review REST, Express layers, Knex CRUD, error handling; practice explaining decisions aloud; use official docs for syntax only during the assessment.
Learn: The mock interview combines live coding (Qualified) with verbal explanation. Practice narrating your structure out loud; passing tests is necessary but interviewers also assess how you think through tradeoffs.
Supplementary examples
Explain-aloud template
# 1. Restate the endpoint requirement
# 2. Name files you will touch (router, controller, service)
# 3. Describe data model / migration if needed
# 4. Implement smallest test-passing slice
# 5. Mention edge cases (404, 400, empty list)Course example
# Preparation checklist
# - All Qualified challenge tests pass
# - Can explain router vs controller vs service
# - Can write a migration + Knex query from scratch
# - Know when to use 201 vs 204 vs 404
# - Behavioral stories ready (STAR format)Additional references & examples
- Behavioral interview tips
Interview preparation resource from the mock interview module.
- STAR method for interviews
Structure behavioral answers: Situation, Task, Action, Result.
- RESTful API design (readthedocs)
Resource naming and HTTP verb conventions (cited in course).