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      C2S Technologies

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      Data Engineer Interview

      May 2, 2025
      Anonymous employee
      Bellevue, WA
      Accepted offer
      Positive experience
      Difficult interview

      Application

      I applied through other source. The process took 2 weeks. I interviewed at C2S Technologies (Bellevue, WA) in May 2023

      Interview

      The interview process consisted of two rounds. The first round focused on SQL queries, testing my ability to manipulate and analyze data effectively. The second round included Python and LeetCode-style coding questions, emphasizing problem-solving skills and algorithmic thinking. Both rounds were technical and assessed hands-on proficiency.

      Interview questions [1]

      Question 1

      One key question they asked was to write a SQL query to find the second highest salary from an employee table, which tested both knowledge of subqueries and handling NULL or duplicate values.
      Answer question

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