Full Stack Software Engineer Interview Questions

1,668 full stack software engineer interview questions shared by candidates

Round 1 Interviewer part: For the first 15mins: He went on with my resume and asked me questions about how I used to work. What strategy do I follow? What kind of processes were involved? How did you do this? What kind of SDLC method I have followed in my previous companies? Agile, Scrum, iterative, waterfall Questions: What is Redux? Alternatives for Redux What is Thunk doing in redux How do you make API calls in useEffect() The rest of the time, solving a Coding question in ReactJs. Round 2 Questions: What are the new additions in ES6 What is the output of this code? let a = 10 test = () => { let a = 12 console.log(a) } test() // logs 12 What is the difference between let, var and const? How do we handle form data in a single object react? Detail about redux? Hooks in redux? Context API Promises vs async await? Which one do you prefer How to update components having no child and parent relation? What are the different verbs for HTTP requests? Difference between put, post and patch? What are the access modifiers in Java? Primitive data types? Write code to implement a doubly linked list. Justifying each step What are generators/generics in Java Round 3 The managerial round was like a discussion about me and how I am. It was more like a conversation than an interview.
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Full Stack Software Engineer

Interviewed at Lowe's Home Improvement

3.5
Apr 10, 2024

Round 1 Interviewer part: For the first 15mins: He went on with my resume and asked me questions about how I used to work. What strategy do I follow? What kind of processes were involved? How did you do this? What kind of SDLC method I have followed in my previous companies? Agile, Scrum, iterative, waterfall Questions: What is Redux? Alternatives for Redux What is Thunk doing in redux How do you make API calls in useEffect() The rest of the time, solving a Coding question in ReactJs. Round 2 Questions: What are the new additions in ES6 What is the output of this code? let a = 10 test = () => { let a = 12 console.log(a) } test() // logs 12 What is the difference between let, var and const? How do we handle form data in a single object react? Detail about redux? Hooks in redux? Context API Promises vs async await? Which one do you prefer How to update components having no child and parent relation? What are the different verbs for HTTP requests? Difference between put, post and patch? What are the access modifiers in Java? Primitive data types? Write code to implement a doubly linked list. Justifying each step What are generators/generics in Java Round 3 The managerial round was like a discussion about me and how I am. It was more like a conversation than an interview.

1.Introduce yourself 2.What is your core skill(I said java) 3.What do you know about java 4.What is oops concept 5.How to achieve multiple inheritances in java 6.Difference between interface and abstraction 7.What are method overloading and method overriding?
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Full Stack Software Engineer

Interviewed at Cognizant

4
Sep 30, 2021

1.Introduce yourself 2.What is your core skill(I said java) 3.What do you know about java 4.What is oops concept 5.How to achieve multiple inheritances in java 6.Difference between interface and abstraction 7.What are method overloading and method overriding?

(Same as another reviewer described) The technical challenge was a variation of leetcode merge interval. The FIRST part is easy. After that they gave a more complex variation of the problem, with arrays nested 3 levels deep.
May 7, 2025

(Same as another reviewer described) The technical challenge was a variation of leetcode merge interval. The FIRST part is easy. After that they gave a more complex variation of the problem, with arrays nested 3 levels deep.

1. General questions from our CV, what you do, how you do and how you are structured in the team. 2. What happens when you enter a website name?(he wanted answers about DNS) 3. Can a website have more than 1 IP addresses and how? 4. What is HTTP and difference between HTTP and HTTPS?
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Full Stack Software Engineer

Interviewed at TeamViewer

3.4
Apr 5, 2024

1. General questions from our CV, what you do, how you do and how you are structured in the team. 2. What happens when you enter a website name?(he wanted answers about DNS) 3. Can a website have more than 1 IP addresses and how? 4. What is HTTP and difference between HTTP and HTTPS?

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