Senior Front End Engineer Interview Questions

2,000 senior front end engineer interview questions shared by candidates

1. Multiple questions on this object like what is this, they asked me find the value of this on from the JS snippets. 2. Flatten a multidimensional array without using inbuilt function. 3. Debounce/Throttling, Closures, Arrow functions & how it is different from normal function, Web worker, Service worker, Webpack, Typescript 4. Difference between px, rem, em and write css for some problem(flex grow/shrink) 4. React all hooks, Redux, React design pattern, improve site security, improve site performance, how to override console log output, pure component, error boundaries 5. Solid principle, Unit testing
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Senior Front End Developer

Interviewed at EPAM Systems

4
Mar 9, 2022

1. Multiple questions on this object like what is this, they asked me find the value of this on from the JS snippets. 2. Flatten a multidimensional array without using inbuilt function. 3. Debounce/Throttling, Closures, Arrow functions & how it is different from normal function, Web worker, Service worker, Webpack, Typescript 4. Difference between px, rem, em and write css for some problem(flex grow/shrink) 4. React all hooks, Redux, React design pattern, improve site security, improve site performance, how to override console log output, pure component, error boundaries 5. Solid principle, Unit testing

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