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Senior Full Stack Developer Interview Questions

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1,152 senior full stack developer interview questions shared by candidates

What was your overall approach and reasoning behind your solution? How would you improve or optimize your solution if given more time? How did you handle potential errors in your solution? Are there alternative approaches you considered, and why did you decide against them? How does your solution reflect best practices in maintainability, readability, and performance?
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Full Stack Developer (Intermediate, Senior, Lead)

Interviewed at MaintainX

4.2★
Sep 4, 2025

What was your overall approach and reasoning behind your solution? How would you improve or optimize your solution if given more time? How did you handle potential errors in your solution? Are there alternative approaches you considered, and why did you decide against them? How does your solution reflect best practices in maintainability, readability, and performance?

- AWS Services - Explain features of Lambda - EC2 vs Lambda - CI/CD tools - Advantages of React - Explain the Virtual DOM - Why Node? Node vs Express? - How to create a Spring Boot application? - What are the different ways to create a Spring Boot application? - What is Dependency Injection? - What is an Actuator? - Explain Accessibility - Security in Spring Boot - How to ensure code quality in Java? - REST Methods - How to secure APIs in microservices? - Static Scan vs Dynamic Scan - Why CVS? - Monitoring & Telemetry in Spring Boot - Tracing errors for Lambdas - How to track application performance in microservices? - Code Quality Tools - what is Sonarqube and how do you use it
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Senior Full Stack Developer

Interviewed at CVS Health

3.2★
Feb 14, 2025

- AWS Services - Explain features of Lambda - EC2 vs Lambda - CI/CD tools - Advantages of React - Explain the Virtual DOM - Why Node? Node vs Express? - How to create a Spring Boot application? - What are the different ways to create a Spring Boot application? - What is Dependency Injection? - What is an Actuator? - Explain Accessibility - Security in Spring Boot - How to ensure code quality in Java? - REST Methods - How to secure APIs in microservices? - Static Scan vs Dynamic Scan - Why CVS? - Monitoring & Telemetry in Spring Boot - Tracing errors for Lambdas - How to track application performance in microservices? - Code Quality Tools - what is Sonarqube and how do you use it

1)Tell me about myself 2) How did i perfom tdd with my web forms app 3) What are latest features used from c#/.net & javascript 4) Is javascript pass by value or pass by reference using swap function 5) equality in javascript == and === 6)async & await vs promises 7) observables 8) closures & bind function (how do we persist values on callback of async function)
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Sr. FUll Stack Developer

Interviewed at IQVIA

3.7★
Aug 12, 2021

1)Tell me about myself 2) How did i perfom tdd with my web forms app 3) What are latest features used from c#/.net & javascript 4) Is javascript pass by value or pass by reference using swap function 5) equality in javascript == and === 6)async & await vs promises 7) observables 8) closures & bind function (how do we persist values on callback of async function)

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