Transferwise Interview Questions

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SQL
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Transferwise Interview Questions

Practice for the Transferwise interview with these recently asked interview questions.

QuestionTopicDifficulty
SQL
Medium

Write a query to show the number of users, number of transactions placed, and total order amount per month in the year 2020. Assume that we are only interested in the monthly reports for a single year (January-December).

Example:

Input:

transactions table

Column Type
id INTEGER
user_id INTEGER
created_at DATETIME
product_id INTEGER
quantity INTEGER

products table

Column Type
id INTEGER
name VARCHAR
price FLOAT

users table

Column Type
id INTEGER
name VARCHAR
sex VARCHAR

Output:

Column Type
month INTEGER
num_customers INTEGER
num_orders INTEGER
order_amt INTEGER
Behavioral
Medium
Product Sense & Metrics
Hard
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Transferwise Salaries by Position

Product Manager*
$110K
Product Manager
Median: $110K
Mean (Average): $110K
Data points: 1
$54K
$130K
Software Engineer
Median: $100K
Mean (Average): $95K
Data points: 11
Business Analyst*
$80K
Business Analyst
Median: $80K
Mean (Average): $80K
Data points: 1

Most data science positions fall under different position titles depending on the actual role.

From the graph we can see that on average the Product Manager role pays the most with a $110,000 base salary while the Business Analyst role on average pays the least with a $80,000 base salary.

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