28 questions · from 2 interviews
Nxtwave interview questions
Every question candidates reported from their Nxtwave interviews, most frequently asked first. Each links to the write-up it came from, so you can see the round and how it went.
Nxtwave coding and DSA questions
- 01
Count Islands With Total Value Divisible by K
LeetCode problem: Count Islands With Total Value Divisible by K.
From NxtWave SDI Internship Interview Experience — August 27, 2026
- 02
Minimum Number of Arrows to Burst Balloons
LeetCode problem: Minimum Number of Arrows to Burst Balloons.
From NxtWave SDI Internship Interview Experience — August 27, 2026
- 03
Minimum Genetic Mutation
LeetCode problem: Minimum Genetic Mutation.
From NxtWave SDI Internship Interview Experience — August 27, 2026
- 04
Two Sum
State the problem (Given an array of integers nums and an integer target , return indices of the two numbers such that they add up to target .) and discuss possible approaches at a high level. No solution code.
Easy · From Back-End Developer Interview Questions — NxtWave
Nxtwave system design questions
- 01
Handling Long-Running Operations in Django
Describe strategies for executing heavy or long-running operations within a Django application to avoid blocking the main thread or requests.
- 02
Celery with Django
Explain what Celery is and discuss its common use cases when integrated with a Django application.
- 03
Minimal E-commerce Table Design
Design a table diagram for a minimal e-commerce application. Identify the core entities, their primary/foreign keys, and the relationships between them.
- 04
E-commerce Entity Relationships
Building on the minimal e-commerce design, identify and specify the types of relationships (one-to-one, one-to-many, many-to-many) that exist between the entities, indicating where each relationship applies.
- 05
End-to-End Production Web App Deployment
Explain the complete end-to-end deployment process for a production web application. Detail the necessary machines and services, including considerations for EC2, S3, databases, load balancers, networking, and observability tools.
- 06
Improving API Latency Under Load
Discuss strategies to improve API latency for a real service operating under heavy load, considering optimizations across the entire stack: network, application code, database, caching mechanisms, and deployment strategies.
- 07
Caching Strategies in Django/FastAPI
Identify optimal locations to implement caching within a Django or FastAPI service and specify the types of data or responses that would be suitable for caching.
- 08
Synchronous vs. Asynchronous Execution in Web API
Discuss the criteria and considerations for choosing between synchronous and asynchronous execution paths when designing a web API.
- 09
Monitoring Metrics and Logs for Latency/Error Budgets
Describe the key metrics and logs you would monitor to ensure compliance with latency and error budgets in a production system.
Nxtwave behavioural and HR questions
- 01
Tell Me About Yourself
Share a brief introduction about yourself, your background, and your relevant experience.
- 02
Describe Current Application and Problem Solved
Explain the application you are currently working on, the specific problem it addresses, and the target users it serves.
- 03
Jira Integration in Daily Workflow
Discuss how you integrate Jira into your team's daily development workflow.
Nxtwave other questions
- 01
Django Request/Response Lifecycle
Explain the complete end-to-end lifecycle of a request and response in a Django application.
- 02
Authentication vs. Authorization in Django
Define and contrast the concepts of authentication and authorization specifically within the context of Django.
- 03
Token-Based Authentication in Django
Explain what token-based authentication is in Django and describe its appropriate use cases.
- 04
Lazy Loading in ORM
Describe lazy loading in the context of databases or Object-Relational Mappers (ORMs). Explain situations where it is beneficial and where it can be detrimental.
- 05
Django Many-to-Many Relationship Modeling
Explain how to model a many-to-many relationship between tables using Django's ORM.
- 06
Django ORM Joins
Explain the internal workings of Django ORM joins and demonstrate how to write them in a clean and efficient manner.
- 07
ACID Properties in Databases
Explain the ACID properties (Atomicity, Consistency, Isolation, Durability) in the context of database transactions.
- 08
Atomicity in Transactional Systems
Define atomicity and explain its significance in transactional database systems.
- 09
Database Indexing
Explain what indexing is in a database and provide guidelines on when it is appropriate to add an index.
- 10
Internal Mechanism of Database Indexing
Provide a high-level explanation of how database indexing works internally.
- 11
Indexing vs. GROUP BY
Compare and contrast database indexing with the GROUP BY clause, highlighting their differences in purpose and how they affect query execution plans.
- 12
Jira Integration with Development and Release Pipeline
Explain how you integrate Jira into your development and release pipeline, referencing issue states, branching strategies, pull request (PR) reviews, and release notes.
Nxtwave interview questions FAQ
What questions are asked in Nxtwave interviews?
Candidates reported 28 distinct questions across 2 Nxtwave interviews. 4 coding and DSA questions, 9 system design questions, 3 behavioural and HR questions, 12 other questions.