Interview plan template

Use Template
to edit & run interviews

Backend Developer interview questionsDatabase Interaction Q&A round

A 60 min interview plan with a time-boxed script, what each question is for, and the signals to score against. Key skills: Database Interaction, API Development, ORM Frameworks, Data Modeling, Transactions.

Click "Use template" to edit

Introduction

5 min
•

Hi, I’m [YOUR_NAME], and I’m a [YOUR_TITLE] at [COMPANY_NAME]. I’m excited to learn more about your experience today.

•

Could you briefly introduce yourself and share what attracted you to apply for this position?

What this question is for, and what to listen for

Purpose

Assess communication skills, alignment with the role, and initial confidence.

Signals to score

  • Clear introduction provided
  • Relevant experience mentioned
  • Motivations for applying explained
  • Alignment with team values
  • Specific skills highlighted
  • Response is concise and organized
  • Understanding of role requirements

Follow-up questions

  • What excites you most about this position?
  • How does your background align with our team’s work?
•

Great, thank you for sharing! In the next 50 minutes, we’ll talk about your experience with database interaction and related topics. After that, you can ask any questions you have about the role or the company.

Database Interaction

15 min
•

Can you explain how you would optimize a slow database query?

What this question is for, and what to listen for

Purpose

Evaluate problem-solving skills and understanding of query optimization.

Signals to score

  • Identifies slow query
  • Uses indexing
  • Considers query restructuring
  • Analyzes execution plan
  • Considers database schema
  • Utilizes caching
  • Monitors performance

Follow-up questions

  • What tools do you use to identify slow queries?
  • How do you decide which indexes to use?
•

How do you handle database transactions in your applications?

What this question is for, and what to listen for

Purpose

Assess knowledge of transactions and data integrity.

Signals to score

  • Uses transactions for data integrity
  • Understands ACID properties
  • Implements rollback on failure
  • Manages transaction scope
  • Ensures consistency
  • Handles concurrency
  • Uses appropriate isolation levels

Follow-up questions

  • What are the ACID properties?
  • How do you ensure data consistency?

API Development

15 min
•

Describe how you would design a RESTful API for a new feature.

What this question is for, and what to listen for

Purpose

Assess understanding of REST principles and API design.

Signals to score

  • Follows REST principles
  • Uses appropriate HTTP methods
  • Designs clear endpoints
  • Considers versioning
  • Implements authentication
  • Ensures scalability
  • Provides documentation

Follow-up questions

  • What HTTP methods would you use?
  • How do you handle authentication?
•

How do you ensure the security of your APIs?

What this question is for, and what to listen for

Purpose

Assess knowledge of API security best practices.

Signals to score

  • Implements authentication
  • Uses HTTPS
  • Validates inputs
  • Limits rate
  • Logs access
  • Monitors for threats
  • Uses API gateways

Follow-up questions

  • How do you handle input validation?
  • What methods do you use for authentication?

ORM Frameworks and Data Modeling

15 min
•

What are the advantages and disadvantages of using an ORM framework?

What this question is for, and what to listen for

Purpose

Evaluate understanding of ORM frameworks.

Signals to score

  • Simplifies database interaction
  • Reduces boilerplate code
  • Supports multiple databases
  • Can impact performance
  • May limit complex queries
  • Requires learning curve
  • Provides abstraction

Follow-up questions

  • How does an ORM simplify database interaction?
  • What are some performance considerations?
•

How do you approach data modeling for a new application?

What this question is for, and what to listen for

Purpose

Assess data modeling skills and understanding.

Signals to score

  • Analyzes requirements
  • Identifies entities
  • Defines relationships
  • Considers normalization
  • Plans for scalability
  • Uses ER diagrams
  • Reviews with stakeholders

Follow-up questions

  • What tools do you use for data modeling?
  • How do you ensure scalability?

Closing

5 min
•

Do you have any questions for me about the team or the company?

What this question is for, and what to listen for

Purpose

Gauge the candidate’s curiosity and interest in the role.

Signals to score

  • Thoughtful questions asked
  • Interest in company culture
  • Curiosity about growth expressed
  • Questions about role raised
  • Inquiries about team challenges
  • Engagement with responses shown
  • Desire to learn next steps

Follow-up questions

  • What interests you most about this team?
  • Are there any areas of the role you’d like to explore further?
•

Thank you for your time today. We’ll be in touch soon regarding the next steps.

Use Template
to edit & run interviews
Interview Template
Position
Backend Developer
Round
Database Interaction Q&A for 60 min
Key skills
Database Interaction, API Development, ORM Frameworks, Data Modeling, Transactions

Backend Developer interviews — common questions

Who is this Backend Developer interview plan for?
It is written for the interviewer, not the candidate: the hiring manager, engineer or panel member running the Database Interaction Q&A round for a Backend Developer role. It gives you a 60 min script to follow in the conversation — 8 questions with what each one is for and the signals to score against — so you are not writing the round from scratch the night before.
What does the Database Interaction Q&A round assess?
This round is focused on: Database Interaction, API Development, ORM Frameworks, Data Modeling, Transactions. It works through Introduction, Database Interaction, API Development, ORM Frameworks and Data Modeling and Closing, scoring against 55 observable signals, with follow-up prompts on all 8 questions for going deeper where an answer is thin.
How is the 60 min split up?
Introduction (5 min), Database Interaction (15 min), API Development (15 min), ORM Frameworks and Data Modeling (15 min), Closing (5 min). The timings are there so the round stays on schedule and every candidate gets the same shape of interview — which is what makes two candidates comparable afterwards.
What other rounds should I run for a Backend Developer?

A single round does not cover a whole role. The other rounds in this library for a Backend Developer: