I interviewed for the Software Engineer position at "Mabaya - Criteo" after successfully completing a home assignment. The assignment involved implementing a REST API using Spring Boot, allowing me to work with any database of my choice while managing products and campaigns. During the interview process, I was asked a series of fundamental Java questions, which covered topics such as StringBuilder versus constructors, design patterns, and the implementation of the Singleton pattern. Additionally, there was a continuous discussion related to the home assignment.
Interview questions [1]
Question 1
- Home assignment : implementing a REST API using Spring Boot : return a single promoted product, the one with the highest bid
This has first round of HR screening and two rounds of Technical round (more coding discussing with interviewer) and one round of system design. Later last round of offer discussion.
Processus de recrutement en quatre étapes : un entretien RH pour discuter du parcours et des motivations, un entretien technique Python d’environ 1h avec des exercices de programmation, un entretien technique web de 2h portant sur les technologies et concepts web, et enfin un entretien d’1h sur le software design pour évaluer les compétences en architecture et conception de systèmes.
Interview questions [1]
Question 1
Programme Python classique pour vérifier si les parenthèses sont valides
I applied online. I interviewed at Criteo (Bucarest, ) in Jan 2026
Interview
application screening, followed by a initial video interview with the HR, than a first technical interview to assess basic qualifications. Questions were of type medium leetcode problem with deep dive and improvements after