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      Ecolab

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      Jobs at Ecolab

      1 jobs in United States
      Principal Microbiologist
      Naperville, IL
      ·
      $86K - $129K /yr
      (Employer provided)
      View job

      Ecolab interviews FAQs

      • R&D Intern applicants have rated the interview process at Ecolab with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 50% positive. To compare, the company-average is 69.3% positive. This is according to Glassdoor user ratings.
      • Candidates applying for R&D Intern roles take an average of 21 days to get hired, when considering 2 user submitted interviews for this role. To compare, the hiring process at Ecolab overall takes an average of 32 days.
      • Common stages of the interview process at Ecolab as a R&D Intern according to 2 Glassdoor interviews include:

        Phone interview:  33%

        Personality test:  33%

        One on one interview:  33%

      • Here are the most commonly searched roles for interview reports -

        1. Territory Manager(298) ;
        2. Territory Representative(147) ;
        3. Account Manager(123) ;
        4. Service Specialist(86) ;
        5. District Manager(81) ;
        6. Pest Control Technician(81) ;
        7. Financial Analyst(64) ;
        8. District Representative(53) ;
        9. Route Sales Manager

      R&D Intern Interview

      Nov 4, 2025
      Anonymous Interview Candidate
      Minneapolis, MN

      Other R&D Intern Interview Reviews for Ecolab

      R&D Intern Interview

      Nov 14, 2021
      Anonymous Interview Candidate
      No offer
      Positive experience
      Average interview

      Application

      No offer
      Negative experience
      Average interview

      Application

      I interviewed at Ecolab (Minneapolis, MN)

      Interview

      Honestly they are just super unprofessional, interviewed in person second round with them almost two months ago, was never sent any follow up, emailed to ask politely for an update and they never responded. It’s not a good look to treat university students like this

      Interview questions [1]

      Question 1

      Tell me about your classes
      Answer question

      I applied through a recruiter. The process took 3 weeks. I interviewed at Ecolab in Oct 2021

      Interview

      They'll first schedule you for an initial intake interview with a regular Human Resources person where the questions are mostly basic behavioral questions. Then, after passing that, they send you to two leaders that represent the two divisions of their R&D: the "laboratory side" where they formulate their products, and the "commercialization side" where they scale up these products and turn them into real-world deliverables.

      Interview questions [1]

      Question 1

      What's a challenge you faced and how did you address it?
      Answer question
      (53) ;
    • Customer Service Representative(48) ;
    • Sales Representative(48) ;
    • Territory Sales Manager(48) ;
    • Corporate Account Manager(45) ;
    • Intern(44) ;
    • Territory Sales Representative(44) .
    • View all R&D Intern Jobs