Ruby On Rails Engineer Interview Questions

Software Engineer (Ruby On Rails)

Interviewed at Builder.ai

2.5★

May 12, 2023

OOPS, REST, SOAP, minor questions regarding rails security, rspec, AWS and some third party concepts.

Ruby On Rails Developer

Interviewed at Bold Penguin

3.5★

Oct 14, 2019

HR Interview

Ruby On Rails Developer

Interviewed at Animoto

4.3★

Dec 18, 2010

What type of data structure would you use to implement auto-complete functionality where memory usage needs to be minimized?

Ruby On Rails Developer

Interviewed at ProProfs

4.5★

May 13, 2025

Can you walk us through how you would design a scalable, modular architecture for a complex feature in a Ruby on Rails application, while adhering to SOLID principles?

Ruby On Rails Developer

Interviewed at Nav

4★

Jul 15, 2018

How would you optimize Ruby for performance?

Ruby On Rails Developer

Interviewed at AdvantageClub.ai

4.3★

Feb 10, 2018

How does map(&:to_i) internally works?

Junior Ruby On Rails Developer

Interviewed at Kantox

4.5★

Aug 31, 2021

How will you optimize a database plenty of banks for example?

Ruby On Rails Developer

Interviewed at BestPeers Infosystem

3.8★

Aug 28, 2023

Q1. Merge 2 sorted arrays. Q2. Count the occurrences of characters in a string. Q3. Count the occurrences of unique vowels and consonants in a string. Q4. Add the digits of a number until it becomes a single digit. Q5. Write SQL query based on the given tables and constraints.

Ruby On Rails Developer

Interviewed at Calendly

2.8★

Apr 11, 2016

Am I equally comfortable with the front-end of the Rails stack as I am with the backend?

Ruby On Rails Developer

Interviewed at Google

4.4★

Sep 17, 2012

Suppose that the 'select' method of the Array does not exist. Implement it using the 'each' method. Pack it as a Module, ready to be mixed in.