Skip to content

Scala coding interview questions

DevSkiller Scala online coding tests and interview questions were developed by our subject-matters experts to verify Scala developer skills for various positions. Our Scala online tests are perfect for technical screening and online interviews.

DevSkiller Scala online tests are powered by RealLifeTestingTM methodology which allows you to select developers with the highest skills.

Technologies covered:

Programming language: Scala

Build tools: sbt

Tested skills
102 minutes max.
Test overview

Choice questions

assessing knowledge of Scala, Functional Programming

Programming task - Level: Hard

Scala | Akka Streams | IoT Data Streaming - Define a time-based aggregator for a stream of data from IoT sensors.

Tested skills
66 minutes max.
Test overview

Choice questions

assessing knowledge of Scala

Programming task - Level: Easy

Scala | Spark | ML Logs Transformer - Complete the implementation of the logs' transformation pipeline.

Tested skills
76 minutes max.
Test overview

Choice questions

assessing knowledge of Scala, Akka, Scala-Actors

Programming task - Level: Medium

Scala | Akka | TCP Stream Messages - Implement client handler for TCP stream messages, process them and send back result to the sender and databaseSaverActor.

The right Scala online tests to screen Scala developers

Recommended roles for our Scala coding tests and interview questions

  • Scala developer
  • Front end developer
  • Back end developer
  • Full-stack developer
  • Web developer
  • Senior scala developer
  • Junior scala developer

How our Scala coding interview questions work

DevSkiller Scala coding interview questions are powered by the RealLifeTestingTM methodology. Our tests not only assess your candidates’ general knowledge but also their coding abilities in real-world situations. Analyze applicants’ development coding know-how, analytical ability, and programming efficiency.

Key features

  • Determine your candidates’ coding skills and not just their general knowledge
  • Remote testing that can be held at your convenience, anywhere in the world
  • The RealLifeTestingTM methodology creates a better user experience where candidates can use their own IDE, clone to GIT, run unit tests and access Stack Overlow/Github/Google for research
  • Stringent anti-plagiarism tool that ensure test accuracy
  • Automatically generated results that non-technical recruiters can easily understand
  • Scala coding interview questions for junior, middle, and senior developers

What to look for in a Scala developer

Scala is a general-purpose programming language that provides support for functional programming and strong static type system. The design for Scala began in 2001 by Martin Odersky. The key advantage of Scala is that its functional, object-oriented, and can work with all programming styles.

Experienced Scala developers should have extensive knowledge of the pattern-matching system, and Scala’s uniques case classes. In addition to this, a proficient Scala developer should understand the main object-oriented patterns of Scala; Singleton, Value object patterns, and lazy initialization.

Skills covered in our Scala coding interview questions

  • Akka
  • Scala-Actors
  • Pattern matching
  • Big Data
  • Utils
  • Case classes
  • ScalaTest
  • Specs2
  • Object-oriented patterns

Like what you see, but looking for more?

Do you want to test applicants using your own codebase? Easy! With DevSkiller, you can build custom tests to suit your particular needs with our online task wizard. Deliver your uniques tests to applicants all over the world, any time.

Want proof that our Scala coding interview questions work?

You might feel that our Scala coding interview questions sound like just what your company needs, but it is understandable to be a little apprehensive when it comes to investing your company’s finances. Take a look at what some of our clients have said about us in the past:

Victoria Cyczewska – Talent Acquisition Specialist at Stepstone Services

“We now have a tool which allows us to not only collaborate to create tests assessing technical skills we need to grow, but also to communicate internally and externally (with candidates). What is more, our technical recruitment process is now more structured. As an example, we use our technical screening results as a conversation starter during technical interviews.”

Sabu Pappu – Talent Acquisition Lead at Veriday

“We have reduced the tech rejection which is great. We’ve seen a 25% improvement at this point after the implementation of DevSkiller. The platform really helps us to assess the programming skills of candidates and provide a logical approach to the problem-solving skills of IT professionals. DevSkiller saved us a lot of time while we had a ramp up and helped us to invite good quality candidates who have performed well in the test, which eventually improved the selection criteria.”

Patrycja Kiljańska – Talent acquisition specialist at Spartez

“We’ve replaced a high-maintenance in-house solution with DevSkiller. Our process looks the same, however, the product gives us better performance. The results are also way easier to assess.”

Frequently asked questions

How are DevSkiller Scala coding interview questions evaluated?

Our DevSkiller Scala coding interview questions have been designed from start to finish, to be as automated and simple to use as possible, in order to take the pressure off recruiters. Our aim is to simplify the recruitment of developers and to quicken up the whole recruitment process.

With our Scala coding interview questions, once a candidate has completed their test, or the allocated time has elapsed, then the DevSkiller platform automatically gets to work on evaluating the results. Once the results are in, an automated report is produced on how well the candidate did, designed so that even the most non-technical recruiter will easily be able to understand.

Candidates are evaluated on their coding skills if they have made any errors and the quality of the code itself. They will also be assessed on whether the solutions they have provided would run (an essential factor in all software development). Robust plagiarism features are also implemented to ensure that results are verified and have not been plagiarized from previous tests.

How do candidates take Scala coding interview questions?

Our Scala coding interview questions are accessed remotely, from anywhere in the world. This is a great time-saver when it comes to recruitment testing as it means the candidate can take the test at their earliest convenience, with no waiting around.

When taking a test, candidates can use their favorite IDE and clone the project to GIT afterward. If they prefer, DevSkiller has our own state of the art in-browser IDE, which candidates can use to complete their Scala test. Recruiters can observe candidates taking tests in real-time if they like. During the assessment, candidates have the option to run unit tests to ensure their solutions are working in the required way, much like they would in their real development work.

Do I need to be a programmer to use DevSkiller?

No. We have our own Scala programming experts who have designed our tests to be able to challenge expert developers, while still being simple and easy to use for recruiters who don’t necessarily know much about Scala themselves. This means you don’t have to be an expert to be able to find one for your business.

Our Scala coding interview questions are automated when it comes to evaluation and when generating progress reports for recruiters.

What’s the test duration?

All our Scala coding interview questions come ready-prepared with default settings. However, if you decide to alter the default settings, then the duration of each Scala test can be easily adjusted. For greater control, recruiters can even attach specific time-limits to each question within a test, if they desire.