Crio.Do Product Engineer Interview Questions and Answers

Q1. Hr calls to understand candidates experience and expectations
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Q1. Both technical discussion and coding happens in this round
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Q1. Some technical discussion with engineer manager and cultural fit
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Speed distance, relations, coding decoding, work time

Strings, LinkedList

Basic bath included and Strings sorting, leetcode medium basic SQL and some basic web related things

Implement login with Google SSO, show emails in a single place

Q1. How to implement JWT
Ans. 
JWT can be implemented by generating a token with user information and a secret key, then verifying the token using the same secret key.
• Generate a JWT token with user information and a secret key

• Include necessary claims like expiration time, issuer, etc.

• Verify the JWT token using the same secret key

• Handle token expiration and refresh if needed
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Q2. Please read about it on the internet, do take care of public and private key use
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Q3. Middleware in express, how to create one?
Ans. 
Middleware in Express is a function that has access to the request and response objects.
• Create a middleware function using app.use() method in Express.

• Middleware functions have access to the request object (req), the response object (res), and the next middleware function in the application's request-response cycle.

• Example: app.use((req, res, next) => { console.log('This is a middleware function'); next(); });
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Q4. Read about it on the internet
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Q1. Discussed about guards in Angular
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Q2. Read about it on the internet
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Q3. How does lazy loading work in Angular
Ans. 
Lazy loading in Angular delays loading of modules until they are needed
• Lazy loading helps improve performance by only loading modules when they are required

• It is achieved by using the loadChildren property in the route configuration

• Lazy loaded modules are loaded asynchronously when the user navigates to the corresponding route
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Q4. Read about lazy loading in Angular
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Q5. How to enable SSR in Angular
Ans. 
Server-side rendering (SSR) in Angular can be enabled by using Angular Universal.
• Install Angular Universal using Angular CLI

• Create a new Angular Universal project

• Update app.module.ts to include server-side rendering

• Build and run the Angular Universal project
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Q6. Read about Angular Universal for this
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It was on hacker rank

It was a aptitude test taken by me of the new and all the response and the of new

Q1. Low Level design on Quiz Portal Application
Ans. 
Designing a low level architecture for a quiz portal application
• Use a microservices architecture for scalability and flexibility

• Implement a database schema to store quiz questions, answers, and user responses

• Utilize caching mechanisms to improve performance

• Design an authentication system to ensure secure access to quizzes

• Include features for creating, editing, and taking quizzes
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Q1. Questions Based on Python
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Q1. Salary Expectations and Joining Process
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Q1. DS and algorithm questions
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Q1. IOS /Skillset questions some tricky questions
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Q1. Personality and Compensation discussion
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Coding round with 3 problem statements

Q1. Questions related to project you have mentioned on resume
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Q2. Questions related to technologies you have mentioned
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Q3. Questions related to the coding test
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Q4. Nothing discussed everything as I know
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Q5. All the best those who are trying their best
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