Sigmoid Data Engineer Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 17 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at Sigmoid.
Sigmoid
Data Engineer
Mid Difficult Neutral experience Accept offer 3 rounds
Interview process
Technical screen Technical screen Recruiter call
Interview formats
Technical Coding Behavioral
So there were three rounds in total. Two were technical and one was with HR. The technical interviews were tough, like medium to hard leetcode. The HR one was pretty standard. Two of the interviews were online, and the last one was in person.
Confirmed questions4 questions
- A question about Binary Trees was asked.
- They asked a question about Data Structures.
- There were some Database related questions.
Sigmoid
Data Engineer
Entry Average Negative experience No offer 4 rounds
Interview process
Recruiter call Take home Technical screen Onsite
Interview formats
Behavioral Technical Coding
There were 3 interview rounds plus a written test. Round 1 focused on resume and project questions. Round 2 covered technical topics like Python, Power BI, and SQL. Round 3 was with the manager, including some behavioral and technical questions, though the manager seemed disengaged, joining late and leaving early, cutting the interview short. Despite the time invested in the interviews and written exam, there was no follow-up regarding the results, which was frustrating as similar experiences were reported by others in my network. This lack of professionalism and communication was disappointing.
Confirmed questions1 question
- Can you explain what a pivot is in SQL and demonstrate its usage?
Sigmoid
Data Engineering Intern
Intern Average Positive experience No offer 2 rounds
Interview process
Technical screen
Interview formats
Coding Technical
So, the interview starts with 2 rounds focused on Data Structures and Algorithms. The questions will be from beginner to medium difficulty. You need to explain your approach for each question to the interviewer. For every approach you explain, you'll be asked about time and space complexity.
Confirmed questions1 question
- There was a question about sliding windows.
Sigmoid Data Engineer Interview Questions
Quoted word for word from Sigmoid interview reports.
“Given a binary tree, find all nodes that are K distance away from a specific node N.”
Read reports →“Find the shortest path between two nodes in a tree.”
Read reports →“Reverse a linked list.”
Read reports →“Write a function to check if a given binary tree is a Binary Search Tree.”
Read reports →“Find the next greater element for each element in an array.”
Read report →“Given an array of integers representing the height of bars in a histogram, find the maximum amount of water that can be trapped between the bars.”
Read report →“Implement a queue using a stack.”
Read report →“How to rotate a 2D matrix anticlockwise?”
Read report →“Implement a hash map in Java.”
Read report →Formats, difficulty and experience
Across all 17 Sigmoid interview reports.