Interview questions asked at Aetna

Unique contribution from past experience

What is REST, and how does it differ from SOAP?

Can you explain what an API is and how it works?

What is the purpose of a database index?

Completing project with tight deadline and limited resources

Describe the purpose and use of environment variables in app development.

Handling new requirements mid-project

What is HTTPS and why is it important?

Time you faced a difficult decision affecting others

How would you ensure scalability and reliability of a microservices app during peak traffic?

First action item if hired

Describe how you optimized a poorly performing backend service and the steps you took.

What is the circuit breaker pattern and how does it help in building resilient microservices?

Describe when you implemented caching to boost app performance and considerations.

How do you handle setbacks