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About the test:

The NumPy online test uses multiple-choice questions to evaluate a candidate's knowledge and skills related to NumPy arrays and operations, indexing and slicing, linear algebra and statistics, broadcasting, ufuncs and vectorization, and data input and output. The test aims to assess the candidate's proficiency in NumPy and their ability to apply numerical computing and data analysis techniques using Python.

Covered skills:

  • Open Source Numerical Python Library
  • 3d Plots/Visualizations
  • SciPy
  • Cores
See all covered skills

9 reasons why
9 reasons why

Adaface Numpy Online Test is the most accurate way to shortlist Python Developers

Reason #1

Tests for on-the-job skills

The NumPy Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates.

The Adaface NumPy Online Test screens candidates for the typical skills recruiters look for NumPy Developer roles:

  • Previous experience as a Python Developer with SQL knowledge
  • Knowledge of Numpy/Pandas
  • Working knowledge of at least one popular Python framework (like Django, Flask or Pyramid)
  • Understanding of object-relational mapping (ORM)
  • Experience with front-end technologies (like JavaScript and HTML5)

The insights generated from this assessment can be used by recruiters and hiring managers to identify the best candidates for NumPy Developer roles. Anti-cheating features enable you to be comfortable with conducting assessments online. The NumPy Online Test is ideal for helping recruiters identify which candidates have the skills to do well on the job.

Reason #2

No trick questions

no trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface ->
Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

These are just a small sample from our library of 10,000+ questions. The actual questions on this Online NumPy Test will be non-googleable.

🧐 Question


Array Manipulation and Summation
Array Manipulation
Mathematical Operations
Consider the following code snippet:
What will be the value of G after executing the code?


Matrix Eigenvalues and Diagonalization
Linear Algebra
Matrix Operations
Consider the following code snippet:
After running this code, which of the following statements is true regarding the B matrix?
🧐 Question🔧 Skill


Array Manipulation and Summation
Array Manipulation
Mathematical Operations
2 mins


Matrix Eigenvalues and Diagonalization
Linear Algebra
Matrix Operations
3 mins
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Array Manipulation and Summation
Array Manipulation
Mathematical Operations
Medium2 mins
Matrix Eigenvalues and Diagonalization
Linear Algebra
Matrix Operations
Medium3 mins
Reason #4

1200+ customers in 75 countries

customers in 75 countries

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!

Brandon Lee, Head of People, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Online NumPy Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Online NumPy Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

invite candidates
Reason #7

Detailed scorecards & benchmarks

Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

test completion rate
Reason #9

Advanced Proctoring

About NumPy/Python Developer Roles

NumPy is used to conduct a wide range of array-based mathematical operations. It extends Python with sophisticated data structures that provide efficient computations with arrays and matrices and a vast library of high-level mathematical functions that work on these arrays and matrices.

Typical NumPy/Python Developer responsibilities include:

  • Create efficient, scalable code
  • Create back-end components to boost responsiveness and overall performance
  • Incorporate user-facing components into programmes
  • Program testing and debugging
  • Enhance the functionality of current systems
  • Put in place security and data protection measures
  • Evaluate and rank feature requests
  • Collaborate with internal teams to comprehend user needs and propose technological solutions

What roles can I use the Online NumPy Test for?

  • Python Developer
  • NumPy Developer
  • Data Analyst
  • Data Scientist
  • Machine Learning Engineer

What topics are covered in the Numpy Online Test?

Open Source Numerical Python Library
3d Plots/Visualizations
NumPy Array Dimensions
Negative Indexing
Data Types
Shape Property

Through slicing a portion of the array is selected, by mentioning the lower and upper limits. Slicing creates views from the actual array and does not copy them.

Array Slicing
Seed Function
Copy and View
Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.

reduction in screening time


Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

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