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Ecolab

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Ecolab Senior Technical Engineer Interview Questions and Answers

Updated 3 Sep 2021

Ecolab Senior Technical Engineer Interview Experiences

1 interview found

Senior Technical Engineer Interview Questions & Answers

user image Anonymous

posted on 3 Sep 2021

I was interviewed in Mar 2021.

Interview Questionnaire 

3 Questions

  • Q1. What is proficiency level in Python, Selenium & Power BI?
  • Ans. 

    Proficient in Python, Selenium & Power BI

    • Expertise in Python programming language and its libraries

    • Experience in using Selenium for automated testing

    • Proficient in creating interactive dashboards using Power BI

    • Ability to integrate Python scripts with Power BI for data analysis

    • Familiarity with data visualization and reporting techniques

    • Answered by AI
    Add your answer
  • Q2. Describe a real use case where you leveraged raw data to solve a business problem.
  • Ans. 

    Used raw data to optimize website performance for a client

    • Analyzed website traffic data to identify slow loading pages

    • Used A/B testing to determine optimal page design

    • Implemented changes to improve page load times and user experience

    • Monitored performance metrics to ensure continued success

    • Answered by AI
    Add your answer
  • Q3. How do you handle class imbalance problems and presence of outliers?
  • Ans. 

    I handle class imbalance by using techniques like oversampling, undersampling, and SMOTE. For outliers, I use statistical methods like Z-score and IQR.

    • For class imbalance, I use oversampling techniques like SMOTE or undersampling techniques like random undersampling.

    • I also use ensemble methods like bagging and boosting to handle class imbalance.

    • For outliers, I use statistical methods like Z-score and IQR to detect and ...

    • Answered by AI
    Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Anticipate the questions that are going to be asked and pen them into paper and practice it well

Skills evaluated in this interview

Top trending discussions

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Interview Tips & Stories
2w
gandalfthepurple
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·
works at
MicroEnergy Credits, Corp.
SQL and Python Interview Tips needed ASAP!
My SQL and Python technical round is in 3 days and I need a list of important topics to practice for Python. I have worked on NumPy and Pandas libraries at my current workplace. Need an exhaustive list of topics that you guys have been asked in DA/BA role interviews. The interview is for a Big4 company. Any help is much appreciated!
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Interview questions from similar companies

Technical Lead Interview Questions & Answers

Veolia user image D Charak

posted on 15 Dec 2024

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Waht is water treatment ?
  • Ans. 

    Water treatment is the process of removing contaminants from water to make it safe for consumption or other uses.

    • Water treatment involves processes such as filtration, disinfection, and sedimentation.

    • Examples of water treatment methods include chlorination, reverse osmosis, and UV treatment.

    • Water treatment is essential for ensuring access to clean and safe drinking water for communities.

    • Industrial water treatment is al...

    • Answered by AI
    Add your answer
  • Q2. To know charcter of water
    • Add your answer

Technical Architect Interview Questions & Answers

Clean Harbors user image Sujitha Kolli

posted on 1 Nov 2024

Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
-
Result
-

I applied via Naukri.com

Round 1 - Technical 

(1 Question)

  • Q1. System Design for E Commerce appliation
  • Ans. 

    System design for an E-commerce application involves designing scalable architecture to handle high traffic, secure transactions, and seamless user experience.

    • Use microservices architecture to break down the application into smaller, independent services for scalability and flexibility.

    • Implement a distributed database system to handle large amounts of data and ensure high availability.

    • Utilize caching mechanisms like Re...

    • Answered by AI
    Add your answer

Skills evaluated in this interview

Technical Lead Interview Questions & Answers

Itron user image 9995121379

posted on 13 Oct 2022

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Coding Test 

Metrix problem to find the shortest order of the largest matrix in given metrix with all non-zer0's

Round 3 - Technical 

(2 Questions)

  • Q1. TCP header details like information included in TCP header?
  • Ans. 

    TCP header contains important information for reliable data transmission.

    • TCP header includes source and destination port numbers

    • It also includes sequence and acknowledgement numbers

    • TCP header has flags for various control functions like SYN, ACK, FIN, etc.

    • Window size, checksum, and urgent pointer are also included in TCP header

    • Answered by AI
    Add your answer
  • Q2. IPv6 vs IPv4 comparison and advantages of IPv6
  • Ans. 

    IPv6 offers more IP addresses, better security, and improved performance compared to IPv4.

    • IPv6 uses 128-bit addresses, providing a virtually unlimited number of unique IP addresses.

    • IPv6 includes built-in security features, such as IPsec, which provides end-to-end encryption and authentication.

    • IPv6 also offers improved performance through features like multicast and anycast addressing.

    • IPv6 simplifies network configurati...

    • Answered by AI
    Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Do lot of programming attempts in C/C++. We need to do programming in limited time

Skills evaluated in this interview

Technical Engineer Interview Questions & Answers

Nalco water user image Anonymous

posted on 15 Jul 2022

Round 1 - Aptitude Test 

Technical and general awareness questions

Round 2 - Group Discussion 

Current topics were discussed

Round 3 - Technical 

(1 Question)

  • Q1. Questions related to thermo heat transfer mass transfer
    • Add your answer
Round 4 - One-on-one 

(1 Question)

  • Q1. Asked about the goals strengths
    • Add your answer
Round 5 - HR 

(1 Question)

  • Q1. Asked basic questions
    • Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Just be confident through out the interview

Technical Support Engineer Interview Questions & Answers

Nalco water user image Anonymous

posted on 12 May 2018

I applied via Referral and was interviewed in Apr 2018. There were 8 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. Basic Chemical engineering questions
    • Add your answer
  • Q2. Some puzzle questions related to real life like those matchstick problems of moving them around to get different numbers
    • Add your answer
  • Q3. Basic HR questions and stuff
    • Add your answer

Interview Preparation Tips

Round: Group Discussion
Experience: Smart work vs hard work
Always speak on both topics... Always remember... This is a GD... Not a debate...

Round: Test
Experience: Aptitude and Reasoning
This can only be improved by practice.

Round: Case Study Interview
Experience: Real life problem related to engineering issues and simple solutions expected

Round: Team leads round
Experience: Basically all previous rounds summed up along with some insight into career and life before the interview..

General Tips: Confidence is the key to cracking this one... Work on your language skills and brush up on technical knowledge before entering.. it's not easy cracking this interview..
Skills: Communication, Body Language, Problem Solving, Analytical Skills, Leadership, Presentation Skills, Decision Making Skills
Duration: 1-4 weeks
More about working at Ecolab

Ecolab Interview FAQs

What are the top questions asked in Ecolab Senior Technical Engineer interview?

Some of the top questions asked at the Ecolab Senior Technical Engineer interview -

  1. Describe a real use case where you leveraged raw data to solve a business probl...read more
  2. How do you handle class imbalance problems and presence of outlier...read more
  3. What is proficiency level in Python, Selenium & Power ...read more

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