Junior interview experiences

Mastercard Associate Java Developer in New York: iMocha assessment, Java and Spring Boot rounds, and Snakes and Ladders

Associate Java role. iMocha MCQs, then two rounds of Java/Spring Boot questions plus some coding. Know your resume and JpaRepository internals.

MongoDB Junior Engineer: two array questions, an LRU Cache LLD and a sharding-heavy system design

Relaxed process for a junior role. Two array questions, then LRU cache, a sharding-heavy design and STAR behavioural. Got the offer.

By Camila Patel

Vanguard Junior Engineer: OOP multiple choice, Two Sum and Valid Parentheses, then behavioural and CS fundamentals

Fastest, most relaxed loop I've done. OOP MCQs + Two Sum + Valid Parentheses, recruiter, behavioural, then CS fundamentals.

By Thomas White

BlackRock Junior Software Engineer in the USA: screening questions, two resume-plus-DSA rounds and a behavioural final

SE1 loop. Valid Parentheses + an LCA-style screen, two rounds of resume questions and easy DSA, then behavioural. Be ready for OOP theory.

Citi Junior Engineer: Two Sum II, Java and Spring Boot questions, and SOLID

Junior loop at Citi, 4 rounds. Two Sum II on a whiteboard, some Java/Spring Boot theory, then SOLID. Offer.