BNY Lead Engineer Interview Questions and Answers

Q1. React machine coding question
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Q2. JavaScript based question
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Q1. Explain your last project and your role in this project
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Q2. Overall working experience with other companies
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Q3. Why choose kafka over MQ ? what challenges you faced during kafka implementation ?
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Q4. Monolith to microservice migration journey ? what all decisions needs to be taken and how the entire migration took place.
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Q5. If worked for RestAPI ? what is the use of swagger ? what is the content of Swagger documentation ?
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Q6. Only this was asked to me , and rejected
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Q1. Not applicable question
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Q2. Not applicable questions
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Q1. HR round was crucial as the third round
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Q2. HR round was crucial
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Q1. Difference between BERT and GPT
Ans. 
BERT is bidirectional, GPT is unidirectional. BERT uses transformer encoder, GPT uses transformer decoder.
• BERT is bidirectional, meaning it can look at both left and right context in a sentence. GPT is unidirectional, it can only look at the left context.

• BERT uses transformer encoder architecture, while GPT uses transformer decoder architecture.

• BERT is pretrained on masked language model and next sentence prediction ta...read more
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Q2. Explain the attention mechanism
Ans. 
Attention mechanism allows models to focus on specific parts of input sequence when making predictions.
• Attention mechanism helps models to weigh the importance of different parts of the input sequence.

• It is commonly used in sequence-to-sequence models like machine translation.

• Examples include Bahdanau Attention and Transformer models.
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Q3. Bias and variance trade off
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Q4. How to deal if the distribution of a variable is skewed
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To deal with skewed distribution of a variable, transformations like log, square root, or box-cox can be applied.
• Apply log transformation to reduce right skewness

• Apply square root transformation to reduce left skewness

• Apply box-cox transformation for a more generalized approach

• Consider removing outliers before applying transformations
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Python code to determine the least common sub word in a given list with strings

Q1. Could you provide details about your experience?
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Q1. 1) Difference between Inner join and outer join. Explain it to a non technical person
Ans. 
Inner join combines only matching rows from two tables, while outer join includes all rows from one table and only matching rows from the other.
• Inner join only includes rows that have matching values in both tables

• Outer join includes all rows from one table and only matching rows from the other

• Example: Inner join would return only customers who have made a purchase, while outer join would return all customers with thei
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Q1. What is the work in last company
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Q1. Sql CTE, SP, Function, Triggers, optimization
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Q2. Read in websites
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