Interview questions by company and technology

Browse reported interview questions by company and technology. Read available community answers and practise for your next interview.

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Practical explanations for technical interviews, full-stack development and career growth.

Career & Interview Preparation · 19 Oct 2026

HTML Interview Questions on Dialogs and Focus

A modal dialog needs a clear purpose, an understandable close action and a usable focus path. The native dialog element provides useful browser behavior, but adding the tag alone does not make every design accessible. Test the complete interaction in the browsers you intend to support.

Career & Interview Preparation · 19 Oct 2026

HTML Interview Questions on Links, Buttons and Keyboard Use

Use a link to navigate to a resource and a button to perform an action. Both can look similar after styling, but their native behavior is different. HTML interview questions about clickable elements are often really questions about meaning, keyboard use and predictable browser behavior.

Career & Interview Preparation · 19 Oct 2026

HTML Interview Questions on Images and Loading

Useful HTML image answers cover the image's purpose, its space in the layout and how the browser chooses when and what to load. An image can have correct alternative text and still move the page around if its expected space is missing. Loading every image lazily can also delay the page's most…

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Interview questions by company and technology

Latest developer insights

HTML Interview Questions on Dialogs and Focus

HTML Interview Questions on Links, Buttons and Keyboard Use

HTML Interview Questions on Images and Loading

Questions

Describe a practical unit, integration, contract, and end-to-end test strategy for a Java full-stack product.

How would you review a pull request that changes Spring Security authentication and authorization?

Design a dashboard API that aggregates millions of records without expensive queries on each request.

How would you implement soft deletion in JPA without leaking deleted records through joins or native queries?

Explain Java collection choices for concurrent read-and-write workloads and their performance tradeoffs.

How do you keep TypeScript frontend contracts aligned with Spring Boot request and response models?

Design a search autocomplete API that is fast, accessible, rate-limited, and safe from injection.

How would you choose between REST, gRPC, and Kafka for communication among Java services?

Explain CORS, CSRF, and XSS for a React and cookie-authenticated Spring Boot application.

How would you debug a production race condition in a concurrent Java order-processing workflow?

Design a zero-downtime deployment for Spring Boot services with backward-compatible database changes.

How would you model hierarchical categories efficiently with SQL, JPA, and Hibernate?

Explain hexagonal architecture in Java and when extra ports and adapters add more complexity than value.

How do you protect a Java service from slow dependencies using timeouts, retries, bulkheads, and circuit breakers?

Compare server-side and client-side filtering for a React table backed by Spring Boot.

How would you implement real-time notifications with WebSockets while handling reconnects and authorization?

Design an append-only audit trail for sensitive changes in a Java product application.

How would you protect and rotate secrets for a Spring Boot application running on AWS?

Explain propagation and rollback behavior in Spring transactions, including common proxy-related mistakes.

How do you validate nested request objects in React and Spring Boot without trusting client-side checks?