I recently got opportunity to interview at Headout for SDE3 frontend or Lead frontend engineer role.
In total I went through 4 rounds of interviews.
Round 1: Machine coding – Implement a virtual list
I was asked to implement the list virtualization with sorting and filtering capability in React or framework of your choice.
This is once of the most common interview question and it has been asked in many companies like ArcticWolf, Tekion, UIPath, ServiceNow.
Round 2: Machine coding – Create stacked snack bar in React
Snackbar or Toast is the common UI component that are used to provide the notifications on the UI. It is a common machine coding question where you are asked to implement the Snackbar and then also handle the stacking of them.
Round 3: Machine coding – Create a sort-able and drag-able TODO list
Todo list are the most common machine coding questions that are asked in interviews, but for the senior level there comes the added complexity where we have to make it sortable by dragging vertically and change their state by dragging them vertically.
Round 4: System Design – Design the Google sheets web application
The interview asked me to design a working Google sheets web application.
Core features
- Support for sub-sheets
- Sharing of sheet and sub-sheets
- Column and Cell level validation
- API contracts
- Optimizations
I have discussed in detail in my course on how to design the frontend of the Google sheets web application and 30 other complex web application, do check it out if you are preparing for your frontend interviews.