Sigmoid Interview Questions, Process, and Tips

Consist of 2 coding questions, multiple choice of around 30 question including, math, code, logic and core concepts.

1 hr of coding test mostly on leetcode platform. level : Hard

Q1. Db related question
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Q1. Why this company?
Ans. 
I am impressed by the company's innovative products, strong company culture, and opportunities for growth.
• Innovative products: I am excited about the cutting-edge technology and solutions the company is developing.

• Strong company culture: I have heard great things about the supportive and collaborative work environment at the company.

• Opportunities for growth: The company's commitment to employee development and career a...read more
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2 coding problem 1)NSE

This is again a coding round 1) boundary traversal of binary tree and 2)Rotten Oranges

Q1. About project which I have done
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Q2. 2 DSA problem of linked list
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Q1. What is Data science?
Ans. 
Data science is a field that uses scientific methods, algorithms, and systems to extract knowledge and insights from structured and unstructured data.
• Data science involves collecting, analyzing, and interpreting large amounts of data to solve complex problems.

• It combines statistics, machine learning, and domain knowledge to make predictions and decisions.

• Data scientists use programming languages like Python and R, as w...read more
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Q2. What is Decision Tree
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A decision tree is a flowchart-like structure in which each internal node represents a test on an attribute, each branch represents the outcome of the test, and each leaf node represents a class label.
• Decision trees are a popular machine learning algorithm used for classification and regression tasks.

• They are easy to interpret and visualize, making them useful for understanding the decision-making process.

• Each internal...read more
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Q1. Case study based on Customer Churn
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Q2. Resume based project question
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Topics like sql, python, aptitude were covered.

Q1. Questions from stats, machine learning were asked. Behavioral questions were also covered.
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Topics advance mathematics and electronics

Q1. Valid parentheses
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Q2. Currying with arrow function
Ans. 
Currying is a technique in functional programming where a function with multiple arguments is transformed into a sequence of nested functions, each taking a single argument.
• Currying can be achieved using arrow functions in JavaScript.

• Arrow functions automatically bind 'this' and do not have their own 'this' value.

• Example: const add = a => b => a + b;

• Example: const addFive = add(5); const result = addFive(3); // result
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Q1. DFS related problem
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Q2. Machine coding round
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