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Senior Frontend Developer Interview Questions

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1,626 senior frontend developer interview questions shared by candidates

- How do you make issue queries/mutations to a graphql server - how do you create graphql server ? What things you need ? - What is directive in graphql ? What is Fragment in GraphQL ? - How do you write unit tests for your Queries/Mutation (on server side) - TypeScript basics - Partial in TS - Decorators - union & discriminating unions - What are Generics in TS ? simple example - useCallback vs useMemo - call parent func from child component in React
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Senior Frontend Developer-React JS

Interviewed at Firstsource Solutions

4.1★
Jul 25, 2023

- How do you make issue queries/mutations to a graphql server - how do you create graphql server ? What things you need ? - What is directive in graphql ? What is Fragment in GraphQL ? - How do you write unit tests for your Queries/Mutation (on server side) - TypeScript basics - Partial in TS - Decorators - union & discriminating unions - What are Generics in TS ? simple example - useCallback vs useMemo - call parent func from child component in React

1. Given binary matrix write algorithm to find rectangle with largest area. e.g. [ [1,0,0,0] [0,1,1,1] [0,1,1,1] [0,0,0,0] 2. Analog to MS paint where you click a point, and all connected areas are auto filled with a color, you're given a matrix/grid with random number in it, so write a function that takes as parameters: canvas (matrix), x/y coordinates, and the color number to replace with. e.g. coordinates: 1,3, newColor:3 [[0,1,1,2,0,1] [1,0,2,2,1,1] [1,0,2,2,2,0]] so all adjacent 2's should be replaced with 3 3. Design front-end for an online chess game 4. Manager interview, just conversation about the interview process and about your background
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Senior Software Engineer - Frontend

Interviewed at Microsoft

4★
May 7, 2022

1. Given binary matrix write algorithm to find rectangle with largest area. e.g. [ [1,0,0,0] [0,1,1,1] [0,1,1,1] [0,0,0,0] 2. Analog to MS paint where you click a point, and all connected areas are auto filled with a color, you're given a matrix/grid with random number in it, so write a function that takes as parameters: canvas (matrix), x/y coordinates, and the color number to replace with. e.g. coordinates: 1,3, newColor:3 [[0,1,1,2,0,1] [1,0,2,2,1,1] [1,0,2,2,2,0]] so all adjacent 2's should be replaced with 3 3. Design front-end for an online chess game 4. Manager interview, just conversation about the interview process and about your background

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