Poshmark Interview Questions

Poshmark Interview Guides

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SQL
(53)
Data Structures & Algorithms
(51)
Machine Learning
(44)
Probability
(27)
A/B Testing
(22)

Poshmark Interview Questions

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

QuestionTopicDifficulty
SQL
Easy

Given a table of transactions, write a query to find the average quantity of each product purchased per transaction each year.

The output should include the year, product_id, and average quantity of the product purchased per transaction that year. The output table should be sorted by year and product_id in ascending order. The value for avg_quantity should be rounded to two decimal places.

Example:

Input: transactions table

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

Output:

Columns Type
year INTEGER
product_id INTEGER
avg_quantity DECIMAL
Data Structures & Algorithms
Medium
Data Structures & Algorithms
Hard
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Poshmark Salaries by Position

ML Engineer*
$165K
ML Engineer
Median: $165K
Mean (Average): $165K
Data points: 1
Data Engineer*
$155K
Data Engineer
Median: $155K
Mean (Average): $155K
Data points: 1
$124K
$207K
Software Engineer
Median: $140K
Mean (Average): $153K
Data points: 8
Data Scientist*
$116K
$139K
Data Scientist
Median: $128K
Mean (Average): $128K
Data points: 2
Product Manager*
$110K
Product Manager
Median: $110K
Mean (Average): $110K
Data points: 1
Data Analyst*
$100K
$105K
Data Analyst
Median: $103K
Mean (Average): $103K
Data points: 2

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

From the graph we can see that on average the ML Engineer role pays the most with a $165,000 base salary while the Data Analyst role on average pays the least with a $102,500 base salary.

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