Clean Harbors Interview Questions, Process, and Tips

Q1. Tell me about yourself
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Q2. Left join right join
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Q3. Union and intersect
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Was fine not tough for person with computer science background

Q1. What do you know about B2b and b2c sales ?
Ans. 
B2B sales involve selling products or services to other businesses, while B2C sales involve selling products or services directly to consumers.
• B2B sales typically involve longer sales cycles and higher value transactions compared to B2C sales.

• In B2B sales, the focus is on building relationships and providing solutions to meet the specific needs of businesses.

• Examples of B2B sales include selling software to companies f...read more
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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...read more
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Q1. Do you know SQL
Ans. 
Yes, I am proficient in SQL and have experience writing complex queries.
• Proficient in writing SQL queries

• Experience with complex joins and subqueries

• Familiar with database management systems like MySQL, PostgreSQL, etc.
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Q2. Do you know excel
Ans. 
Yes, I am proficient in Excel and have experience using it for data analysis and reporting.
• Proficient in creating formulas and functions

• Experienced in data manipulation and analysis

• Skilled in creating charts and graphs for reporting purposes
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