I applied through college or university. The process took 2 months. I interviewed at Ecolab (Nāgpur, Maharashtra) in May 2021
Interview
Firstly aptitude then technical +Hr and then Final HR round.
In aptitude there were general apti question as well as technical questions and had to answer 30 question in 45 minutes which was decent enough followed by the technical interview which was moderate and HR interview which was easy
I applied through other source. I interviewed at Ecolab (Pune) in Jun 2024
Interview
Was moderate level..mostly based on cooling Tower, Corrosion, scaling and fouling. 30 mins duration and online interview. Two rounds of interviews are there. First a technical interview and second as a hr interview. But if you cleared the first level. You got selected
I applied through college or university. I interviewed at Ecolab (New Delhi) in Jun 2022
Interview
The first round was technical test which was conduced in amity university
The second round was HR + Technical interview.The third and final round was only HR interview which was scheduled online.