Interview Questions
Hibernate Interview Questions (2026): Most Asked, With Answers
Hibernate ORM 7.0.0.Final shipped on May 19, 2025, finishing a namespace switch that started with version 6.0: every javax.persistence import became jakarta.persistence, with no…
GraphQL Interview Questions (2026): Most Asked, With Answers
On November 6, 2018, ten companies, Facebook, GitHub, Shopify, Airbnb, Twitter, Coursera, Apollo, Elementl, Hasura, and Prisma, agreed to hand GraphQL over to a…
Elasticsearch Interview Questions (2026): Most Asked, With Answers
Elastic’s own engineering guidance puts a healthy production shard somewhere between 20GB and 40GB, with 50GB quoted as the rough ceiling where things still…
Apache Spark Interview Questions (2026): Must-Know Q&A
Apache Spark’s official docs are versioned 4.1.2 as of this writing, sixteen years after Matei Zaharia and four coauthors described the project in a…
Terraform Interview Questions (2026): IaC Q&A With Examples
Terraform showed up in 18.7 percent of professional developers’ toolchains in the 2025 Stack Overflow Developer Survey, just ahead of Ansible’s 11.2 percent and…
REST API Interview Questions (2026): Design, Status Codes & Scenarios
REST is still the backbone of nearly every API interview loop in 2026, even after a decade of “GraphQL will replace it” takes. Postman’s…
MongoDB Interview Questions (2026): Most Commonly Asked, With Answers
A backend engineer candidate at a 40-person fintech startup lost the round in under two minutes in March 2026. The question wasn’t hard on…
SQL Interview Questions (2026): From Joins to Window Functions
A candidate at a Series B fintech spent six weeks grinding through LeetCode’s SQL section before her onsite. Then the interviewer opened a blank…
Selenium Automation Interview Questions (2026): WebDriver to Frameworks
A QA lead at a 60-person logistics startup rejected a Selenium candidate in April 2026 over one follow-up question: what happens if you set…
React Developer Interview Questions (2026): Hooks, Performance & Patterns
React was used by 46.9 percent of professional developers in the 2025 Stack Overflow Developer Survey, more than double Angular’s 19.8 percent and Vue’s…