Test duration:
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Level of experience:
Entry Level/Mid/Senior

Erlang Skills Test

Utilize this assessment to identify candidates' and employees’ skill gaps through assessments and make skill-first talent decisions. It enables you to assess individuals’ skills in topics like OTP, VM, debugging, and more. Additionally, this test helps you save 45% of your hiring time and measure ROI of your learning programs.

The Erlang logo, a programming language known for its concurrency, robustness, and scalability
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Erlang Skills Test

1. What is Erlang?

It is a runtime environment and general-purpose programming language. It simplifies concurrent programming for programmers. Instead of using shared variables to exchange data, the processes use message passing, which does away with the requirement for locks. It is an effective framework for fault tolerance and error containment.  

2. Why use iMocha's skills test?      

All the questions of this skills test are designed by SMEs considering the Equal Employment Opportunity (EEOC) guideline to enable you to assess the capabilities of existing and potential candidates bias-free.  

That is why the emphasis is placed on assessing the practical skills acquired through real work experience rather than just theoretical understanding. Moreover, this assessment also helps organizations benchmark their workforce against industry standards.

Wondering what other skills we have in our World’s Largest Skills Assessment library?
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How it works

Test Summary

The skills assessment test helps to screen candidates who possess the following abilities:  

  • Excellent programming skills in OTP  
  • Knowledge and experience with programming in languages such as C, C++, Python, JavaScript, and Objective C
  • Experience and understanding of databases  
  • Debugging and correcting code
  • Understanding of syntax and data structure  
  • Experience with EPMD
  • Familiarity with debugging and profiling tools  
  • Knowledge of libraries and frameworks such as Cowboy, RabbitMQ, and Riak.  
  • Experience with unit testing frameworks, such as EUnit and PropEr.  

The test reporting capabilities of this test will allow you to get a complete overview of their test performance and skills. Also, to safeguard the integrity of individuals and the accuracy of the results during their assessment, you can employ numerous anti-cheating measures provided along with this assessment.  

Useful for hiring
  • Erlang Developer
  • Distributed Systems Engineer
  • Telecoms Software Engineer
  • DevOps Engineer
  • Network Engineer
  • Platform Engineer
  • Software Engineer (Real-Time Systems)
Test Duration
No. of Questions
Level of Expertise
Entry Level/Mid/Senior
Topics Covered





Sample Question
Choose from our 100,000+ questions library or add your own questions to make powerful custom tests.
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Topics covered


A helicopter view of the employee's progress
Test Report
You can customize this test by

Setting the difficulty level of the test

Choose easy, medium, or tricky questions from our skill libraries to assess candidates of different experience levels.

Combining multiple skills into one test

Add multiple skills in a single test to create an effective assessment and assess multiple skills together.

Adding your own
questions to the test

Add, edit, or bulk upload your coding, MCQ, and whiteboard questions.

Requesting a tailor-made test

Receive a tailored assessment created by our subject matter experts to ensure adequate screening.
How is the Erlang skills test customized?
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Our Erlang skills test can be customized in many ways to fit the requirement of the role in the company. The questions are created by SMEs based on their knowledge and expertise. Using this test, you can assess candidates' technical and non-technical skills in a single assessment. In this test, you also get to choose which type of question you want to include to assess candidates' capabilities better.

What are the most common interview questions related to this position?
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Here is a list of some common interview questions:      

  • Name some datatypes.  
  • Explain what PID datatype is.  
  • How is the runtime error handled in this program?  
  • Explain what Spawn/ 1l3 and Spawn_link 1l3 are.  
  • Mention what is the syntax to write Macros  
  • Explain what EPMD is.  
  • What are the methods of I/O?  

If you are looking for more customized questions, iMocha can help!

What are the required skill sets for Erlang?
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Individuals in this role are required to have the following set of technical and non-technical skills:      

Technical Skills:  

  • OTP & SIP.  
  • Event Loop architecture  
  • Asynchronous programming in JavaScript  
  • Basic frameworks such as HTML/CSS, SASS, JavaScript (+jQuery), ES6  
  • Design and debugging  
  • Performance Tuning  
  • Database Connectivity  
  • Data Structures  
  • Concurrency Control  
  • Distributed Computing  
  • Reactive Programming  


Non-Technical Skills:    

  • Problem-Solving Skills  
  • Collaboration Skills  
  • Communication Skills  
  • Time management skills  
What are the roles and responsibilities for this role?
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Listed below are the roles and responsibilities:    

  • Working as part of an extended team using relevant communication, project management, and version control software  
  • Experience with Linux and Solaris operating systems  
  • Programming skills and experience with languages such as C and Java  
  • Experience in the implementation of soft real-time servers  
  • Experience with communications protocols (HTTP, XMPP, SMPP, …)  
  • Experience with Agile Methods, including Test Driven Development  
  • Designing, coding, testing, and related software support.  
  • Identifying and analyzing user requirements.  
  • Understanding software cycles and assigning and executing tasks throughout SDLC.  
  • Writing efficient, readable, and maintainable code.