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19,506 full stack software developer interview questions shared by candidates

Q1: Can you explain the purpose of the dotenv package in this code? A1: dotenv is used to load environment variables from a .env file. It helps keep sensitive information, such as API keys or database connection strings, separate from the codebase. Q2: What is the purpose of the helmet middleware, and why is crossOriginResourcePolicy used here? A2: helmet is a security middleware for Express. crossOriginResourcePolicy helps in setting the Cross-Origin Resource Policy header, enhancing security by controlling how resources can be requested across different origins. Q3: Explain the role of the morgan middleware in this code. A3: morgan is a middleware for logging HTTP requests. In this code, it is configured with the "common" format, which logs the standard Apache common log output. Q4: What is the purpose of the body-parser middleware, and how is it configured in this code? A4: body-parser is used to parse the incoming request bodies in a middleware. In this code, it is configured to handle JSON and URL-encoded data with specified limits.

Full Stack Developer

Interviewed at Techhut

4.7★
Jan 7, 2024

Q1: Can you explain the purpose of the dotenv package in this code? A1: dotenv is used to load environment variables from a .env file. It helps keep sensitive information, such as API keys or database connection strings, separate from the codebase. Q2: What is the purpose of the helmet middleware, and why is crossOriginResourcePolicy used here? A2: helmet is a security middleware for Express. crossOriginResourcePolicy helps in setting the Cross-Origin Resource Policy header, enhancing security by controlling how resources can be requested across different origins. Q3: Explain the role of the morgan middleware in this code. A3: morgan is a middleware for logging HTTP requests. In this code, it is configured with the "common" format, which logs the standard Apache common log output. Q4: What is the purpose of the body-parser middleware, and how is it configured in this code? A4: body-parser is used to parse the incoming request bodies in a middleware. In this code, it is configured to handle JSON and URL-encoded data with specified limits.

Round 1: Online assessment contains 2 programming questions. Most of dynamic programming problems. Round 2: Technical interview with CTO for 1 hr. Questions were from previous company projects, our responsibilities in previous project, java technical questions like java 8 features, java concepts. Questions also from Databases, front end technologies, deployment process and production issue handling. Round 3 : Interview with CEO. Discusses about my previous companies and projects. Some basic technical questions and managerial interview questions. Round 4 : Interview with HR. Discussed about the experience of the interview, he explained about the company and culture and Cost to company discussion. Finally I got an offer from Zumen.
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Full Stack Developer

Interviewed at Zumen

4.1★
Jul 19, 2021

Round 1: Online assessment contains 2 programming questions. Most of dynamic programming problems. Round 2: Technical interview with CTO for 1 hr. Questions were from previous company projects, our responsibilities in previous project, java technical questions like java 8 features, java concepts. Questions also from Databases, front end technologies, deployment process and production issue handling. Round 3 : Interview with CEO. Discusses about my previous companies and projects. Some basic technical questions and managerial interview questions. Round 4 : Interview with HR. Discussed about the experience of the interview, he explained about the company and culture and Cost to company discussion. Finally I got an offer from Zumen.

Architecture questions, nodejs async/await questions. Home task: Develop a  web app (Front + Back) that gets latest rates for BTC-USD, ETH-USD and LTC-USD from at least 2 sources for each.  The app should get rates every X minutes and store them in a database. The app should have 2 pages:  1. Front page that shows all 3 pairs and their latest average rate 2. A list of historical rates for each pair from each source.   Using: * Docker, docker-compose * Nodejs * Redis / MySQL * React / Vue Bonus Add a shoutbox on the front page (a simple interface for users to write whatever they want) Some sources for crypto rates (you can use others) coinmarketcap.com cryptocompare.com bitstamp.net
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Full Stack Developer

Interviewed at Coinmama

4.6★
Apr 11, 2021

Architecture questions, nodejs async/await questions. Home task: Develop a  web app (Front + Back) that gets latest rates for BTC-USD, ETH-USD and LTC-USD from at least 2 sources for each.  The app should get rates every X minutes and store them in a database. The app should have 2 pages:  1. Front page that shows all 3 pairs and their latest average rate 2. A list of historical rates for each pair from each source.   Using: * Docker, docker-compose * Nodejs * Redis / MySQL * React / Vue Bonus Add a shoutbox on the front page (a simple interface for users to write whatever they want) Some sources for crypto rates (you can use others) coinmarketcap.com cryptocompare.com bitstamp.net

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