Lead Data Engineer Interview Questions

239 lead data engineer interview questions shared by candidates

1.write singleton class 2.write a code in Java which demonstrate Deadlock. 3.Given two tables employee(empire,name,salary,deptid) Department (deptid,dept_name) Find 2nd highest salary dept wise 4.print zigzag star pattern 5.find next greater permutation Input:"21345" Output:"21354" 6.Implement EventOnlyIterator Input:[1,1,2,2,2,3,3,5,6,9,9] Output:2 2 2 6
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Lead Big Data Engineer

Interviewed at Bharti Airtel

3.8
Jun 14, 2025

1.write singleton class 2.write a code in Java which demonstrate Deadlock. 3.Given two tables employee(empire,name,salary,deptid) Department (deptid,dept_name) Find 2nd highest salary dept wise 4.print zigzag star pattern 5.find next greater permutation Input:"21345" Output:"21354" 6.Implement EventOnlyIterator Input:[1,1,2,2,2,3,3,5,6,9,9] Output:2 2 2 6

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