Skip to contentSkip to footer

Senior Backend Developer Interview Questions

Salaries
Interviews

1,045 senior backend developer interview questions shared by candidates

1. whats different between inhertance vs composition what you prefer 2, Write mysql query to get all author who has publish atleast 3 books... there were two table ( Author , books) 3. There was a code and i have to do code review 4. Learn interface , SOLID , depency inversion principle 5. Mysql joins and group by and having clause The salary is too low they are giving 67k for mid to senior level. They will promise that they have budget till 85k and in the interview they will tell that you are not upto mark with all skills so we can offer you mid level position and we can offer you max 67k. they wasted my time... My interview went pretty good but. still they told me my mysql part is week.
avatar

Senior Backend Developer

Interviewed at GotPhoto | fotograf.de

2★
Nov 17, 2022

1. whats different between inhertance vs composition what you prefer 2, Write mysql query to get all author who has publish atleast 3 books... there were two table ( Author , books) 3. There was a code and i have to do code review 4. Learn interface , SOLID , depency inversion principle 5. Mysql joins and group by and having clause The salary is too low they are giving 67k for mid to senior level. They will promise that they have budget till 85k and in the interview they will tell that you are not upto mark with all skills so we can offer you mid level position and we can offer you max 67k. they wasted my time... My interview went pretty good but. still they told me my mysql part is week.

League Backend Challenge In main.go you will find a basic web server written in GoLang. It accepts a single request /echo. Extend the webservice with the ability to perform the following operations Given an uploaded csv file 1,2,3 4,5,6 7,8,9 Echo (given) Return the matrix as a string in matrix format. // Expected output 1,2,3 4,5,6 7,8,9 Invert Return the matrix as a string in matrix format where the columns and rows are inverted // Expected output 1,4,7 2,5,8 3,6,9 Flatten Return the matrix as a 1 line string, with values separated by commas. // Expected output 1,2,3,4,5,6,7,8,9 Sum Return the sum of the integers in the matrix // Expected output 45 Multiply Return the product of the integers in the matrix // Expected output 362880 The input file to these functions is a matrix, of any dimension where the number of rows are equal to the number of columns (square). Each value is an integer, and there is no header row. matrix.csv is example valid input. Run web server go run . Send request curl -F 'file=@/path/matrix.csv' "localhost:8080/echo" What we're looking for The solution runs The solution performs all cases correctly The code is easy to read The code is reasonably documented The code is tested The code is robust and handles invalid input and provides helpful error messages
avatar

Senior Software Engineer Backend – (Apps & Solutions)

Interviewed at League

3.8★
Feb 24, 2025

League Backend Challenge In main.go you will find a basic web server written in GoLang. It accepts a single request /echo. Extend the webservice with the ability to perform the following operations Given an uploaded csv file 1,2,3 4,5,6 7,8,9 Echo (given) Return the matrix as a string in matrix format. // Expected output 1,2,3 4,5,6 7,8,9 Invert Return the matrix as a string in matrix format where the columns and rows are inverted // Expected output 1,4,7 2,5,8 3,6,9 Flatten Return the matrix as a 1 line string, with values separated by commas. // Expected output 1,2,3,4,5,6,7,8,9 Sum Return the sum of the integers in the matrix // Expected output 45 Multiply Return the product of the integers in the matrix // Expected output 362880 The input file to these functions is a matrix, of any dimension where the number of rows are equal to the number of columns (square). Each value is an integer, and there is no header row. matrix.csv is example valid input. Run web server go run . Send request curl -F 'file=@/path/matrix.csv' "localhost:8080/echo" What we're looking for The solution runs The solution performs all cases correctly The code is easy to read The code is reasonably documented The code is tested The code is robust and handles invalid input and provides helpful error messages

Viewing 811 - 820 interview questions

Glassdoor has 1,045 interview questions and reports from Senior backend developer interviews. Prepare for your interview. Get hired. Love your job.