Engineering Decisions Junior interview questions and answers
12 questions for a Engineering Decisions (Junior) interview - with correct answers, explanations and links to the docs.
Take this quiz- 1.A server-rendered site lets guests pick a dark theme. The very first HTML must already use the right theme, with no flash. Where do you keep the choice?
- 2.A search box calls an API billed per request. Results should appear while the user types, but not on every keystroke. What fits?
- 3.A popular blog gets its articles edited a few times a day. Search traffic matters, and text up to an hour old is fine. How do you render the pages?
- 4.An online store's catalog has 10,000 products. Shoppers compare items, share links to a position and need the footer. How do you display the list?
- 5.Two sibling components on one page share a filter value: one edits it, the other shows the filtered table. Nothing else needs it. Where does the state go?
- 6.A badge shows unread notifications. They arrive a few times an hour, a one-minute delay is fine, and the hosting doesn't allow long-lived connections. What do you use?
- 7.Users upload avatars of up to 5 MB. The app runs on several instances behind a load balancer. Where do you store the files?
- 8.Moderators delete comments, and sometimes must restore one within 30 days. Regular queries should stay simple. How do you implement deletion?
- 9.A big feature takes three weeks, while the team ships to production daily and conflicts are getting painful. How do you develop it?
- 10.Sign-up sends a welcome email through a provider that sometimes takes 10 seconds. Sign-up itself must stay fast, and the email may arrive a minute later. What do you do?
- 11.A small team has one day to add tests before a launch. The checkout flow earns all the revenue and has never been covered. What do you write first?
- 12.The product needs an accessible date picker next week. Nobody on the team has built one, and the app already uses a maintained component library. What do you pick?