Glassdoor users rated their interview experience at Mantel as 25% positive with a difficulty rating score of 2.5 out of 5 (where 5 is the highest level of difficulty). Candidates interviewing for Customer Service Representative and Senior Data Engineer rated their interviews as the hardest, whereas interviews for Customer Service Representative and Consultant roles were rated as the easiest.
The interview was streamlined, professional and the HR team was amazing the whole way through the experience. I felt like the company was special before completing the interview. It felt very different to other organisations interview processes.
I applied online. I interviewed at Mantel in Jan 2026
Interview
Initial HR Catchup
Take home assessement - Impatient to hear out your responses
They didn't even look at the assessment (I could verify this as there were no unique views or pulls from my github project but they blatantly lied that they viewed my project)
The tech lead had this inferiority complex interviewing me as I had more experience and a thorough coverage of the tech assessment that I carried out and ended up cutting me short while explaining.
They went quiet after the interview and got ghosted.
Thankfully understood their culture and red flags prior
The process took 4 weeks. I interviewed at Mantel in May 2025
Interview
The interview process was precisely designed with meaningful steps and each step, a clearer idea of the role and better understanding of both sides were obtained. The entire process and expectations was very professional and demands critical thinking.
Interview questions [1]
Question 1
My understanding and experience in end to end ML architecture.