I applied through an employee referral. The process took 3 weeks. I interviewed at Sia (Brussels) in Feb 2016
Interview
3 steps
1 competences interview
1 business case interview
1 fit interview with the managing partner
The business case is not easy. They make you do mathematical calculations on excel.
The fit interview is really friendly. The managing partner make yourself at ease
Interview questions [1]
Question 1
Q: what is the latest news you read about Sia Partners?
I applied through other source. I interviewed at Sia (Paris) in Jun 2026
Interview
Business case sur un projet client en utilisant l'IA et en étant évalué dessus. L'entretien dure 1h, il y a quelques éléments de contexte qui sont données au démarrage et ensuite on passe au cas pratique. On m'a demandé si j'avais des questions dessus puis on a répondu à aucune, m'a indiqué que le temps était limité 5 min et j'ai du partager mon écran pour montrer ce que je faisais avec l'IA. Il y a ensuite eu une restitution et j'ai pu poser quelques questions.
I applied online. The process took 1 day. I interviewed at Sia (New York, NY) in Dec 2025
Interview
Just had a video first round. Didnt hear about the rest of the interview process. Super friendly and straightforward. Was not what they were looking for so. Interview was with an internal recruiter.
I applied through a recruiter. The process took 4 weeks. I interviewed at Sia (Brussels)
Interview
The procedure consists of a four-step process: HR interview, first interview, business case interview where you need to prepare a business case and present it. Final step is a final interview with the CEO.
Interview questions [1]
Question 1
Are you willing to work in different industries and work in different countries?