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French

Junior Scala Developer
6 years of experience

A Software Engineer utilizing open source technologies and experience on big data, web services and integration. Has 5 years of experience on Full . . .

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Hap

Scala Developer
5 years of experience

Over 5 years of experience in Java Development An adept web applications developer with more than 5 years hands-on experience in the field of web a. . .

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Alfonso

Mid-level Scala Developer
7 years of experience

Alfonso is a Software Engineer utilizing open source technologies and experience on big data, web services and integration. Has 5 years of experience . . .

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Roberts

Senior Scala Developer
15 years of experience

With 15 years of full stack development experience, he possess expertise in Object-Oriented Analysis/Design, Java Development and other open source te. . .

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Hap

Scala Developer
5 years of experience

Over 5 years of experience in Java Development An adept web applications developer with more than 5 years hands-on experience in the field of web a. . .

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How to Hire the Best Scala Developers

To make the best decision when hiring Scala developers, hiring managers and recruiters must first understand the language as well as the technologies related to it. Hiring managers who are familiar with even the basics of Scala are able to know the crucial skills and traits to look for when screening CVs and candidates for the position.

 

We’re discussing some important information about hiring tech talents such as developers to help make your hiring and recruitment process faster and easier.

 

Scala, which gets its name from the combination of scalable and language, is designed by Martin Odersky. Built to grow with the demand of its users, Scala combines object-oriented and functional programming in a high-level language. It first appeared in 2004, and since its inception, it has grown tremendously in demand. It is widely used by some of the biggest names such as Twitter, LinkedIn, The Guardian, Tumblr, and FourSquare among others.

 

Scala’s strong static type system is effective in avoiding bugs in complex applications. It works on JVM, JavaScript, and LLvm, and its JVM and JavaScript runtimes allow developers to create high-performance systems with the help of huge ecosystems of libraries. Aside from its strong static type system, Scala supports functional programming, which makes it a good choice for general purpose programming.

 

Another interesting thing about Scala is that it provides language interoperability with Java. This means that libraries written in these two languages can be referenced directly in Scala or Java code.

What are the benefits of using Scala?

Comprehensive solution for all kinds of projects

Scala is a comprehensive software development platform that can help you develop business solutions regardless of the industry you are in. It uses a simplified version of Java syntax and is compatible to run on the JVM; it also bridges the gap between object-oriented and functional programming.

 

Scala is suitable for high-level software programming, and it is able to help developers build great Android applications and APIs through powerful JavaScript functions.

 

A growing framework

Another benefit of using Scala is that it has a growing set of libraries and frameworks. Lift and Play are only two of some great Scala frameworks out there. Akka, a Scala-based concurrent framework, is another great tool used to build highly-concurrent, fault-tolerant event-driven applications on the JVM. Apache Spark, on the other hand, is a tool which developers use in Big Data Space.

 

Big Data Projects

The Big Data market has experienced huge growth, and it is also expected to cross $103 billion marks by 2027.

Having Scala developers in your team can help you build Big Data projects should you want to in the future because of the powerful features of Scala and the Spark platform. In fact, Apache Spark is one of the top 5 big data processing platforms in the market, according to training provider KnowledgeHut.

 

Scalability

As its name implies, Scala is able to scale with your business. The option to use both the OOP and functional programming on the JVM offers you huge flexibility as you develop your applications. With Scala, you can scale up any feature that works well in short software applications to make them work in large software ecosystems efficiently and effectively. It is a tool that grows with your business.

What kind of projects can a Scala developer work on?

Scala is a powerful, flexible and versatile tool that can be used to create and develop any type of application. With Scala, you can work on web applications, desktop applications, mobile applications, enterprise applications, and more.

 

Here are some applications and uses of Scala:

  • Writing web applications
  • Creating applications that work with streaming data
  • Distributed applications
  • Data analysis with Apache Spark
  • Parallel batch processing

 

Scala takes less time to code compared to Java as Java usually needs more lines of code. Moreover, it has a wide variety of powerful tools and APIs to help you build diverse applications. 

What technical skills should you look for when hiring Scala developers?

It is impossible to find the right Scala developer for your business when you have no idea of the technical and soft skills they must possess. As you screen your candidates, it is also essential for you to learn how to evaluate a candidate’s qualifications against the skills and expertise that your vacancy requires.

 

Aside from a bachelor’s degree in Computer Science or any similar field, here are some great technical skills and traits you must look for:   

  • A basic understanding of programming and best practices in Scala development.
  • Java - If your business has a Java codebase along with Scala, experience and skills in Java development are required. If your business is building a product from scratch using Scala, you will need someone with a basic understanding of Java.
  • Ability to work on JVM (Java Virtual Machine)
  • Knowledge of statistical analysis
  • Knowledge in using distributed file storage systems (HDFS)
  • Knowledge in SQL and relational database management system
  • Knowledge of object-oriented programming
  • Knowledge of functional programming - Great Scala developers know and understand great FP techniques that make their work more efficient.
  • Experience with building web applications or big data frameworks - Not a requirement, but Scala developers who have experience working with Play!, Spray, Akka-HTTP (which are used for building web applications) may have skills that you will need in the future.  

 

Moreover, here are some Scala-related technical skills that are worth looking for in your candidates:

  • Knowledge on and experience with Scala frameworks and libraries
    • Working on the Back-end (e.g. Akka, Finagle)
    • Big Data (e.g. Spark, Scalding)
    • For building web applications (e.g. Play, Lift, Scalatra)
    • Utils (e.g. Scalaz Cats)  
  • Knowledge on and experience in using Scala testing tools (e.g. ScalaTest, Specs2)
  • Knowledge of and experience in using Scala build tools (Simple Build Tool (sbt))

What are the best practices in Scala development?

Whether you’re looking for more questions to ask Scala developers during the interviews, or you simply want to know more about how to develop better products with Scala, it will be very helpful to know and understand the best practices in Scala development. Let’s go through some of them here:  

 

Use uppercase suffix.

When declaring literal numbers like Long or Float, it is a good practice to use upper case suffix. Some letters can look a lot like numbers especially with certain fonts and syntax highlighting scheme, so it’s wise to use uppercase to distinguish letters from numbers.

 

For example, it is easy for the casual reader to miss a Long sneaked in this list of Ints:

List(1, 11, 111, 111l, 11111, 11111, 11111)

With uppercase letters, the Long becomes more obvious:

List(1, 11, 111, 111L, 11111, 11111, 11111)

Avoid structural types

Instead of using a structural type, consider using a type class instead.

 

Structural types aren’t always the best solution to problems. Structural types rely on runtime reflection, which is inherently slower than solutions where all the work is done at compile time. Another reason to consider avoiding structural types is that they are not always supported. For example, when running on the JVM, structural types can break because reflection is controlled by what SecurityManager is running. This can break your code in such a way that it cannot be validated statically.

 

Do not use = = when comparing arrays

It is a better practice to use sameElements rather than == when comparing two arrays.

 

== compares arrays not for value equality but for reference equality. Array, which is essentially an alias for Java’s array, implements equals as reference equality. Using equals will give you this counter-intuitive behaviour:

 

Array(1) == Array(1)// res0: Boolean = false
On the other hand, using sameElements will give you this:
Array(1) sameElements Array(1)// res1: Boolean = true

What is the usual rate of Scala developers?

There are several factors to consider when talking about rates of Scala developers. You have to consider the level of expertise you need as well as where you are hiring. Below is a table comparing the average annual salary and hourly rates of Scala developers from the UK, the US, Canada, and Australia. All figures are from Neuvoo and Payscale.

 

  Scala Developer Average Annual Salary Scala Average Hourly Rate
United Kingdom GBP 52,500 GBP 26.92
United States USD 115,000 USD 58.97
Canada CAD 123,375 CAD 63.27
Australia AUD 101,500 AUD 52.86


Companies and organisations are now opting to outsource and work with IT outsourcing service providers to reduce costs on recruitment and operations. Through working with service providers and outsourcing companies, these businesses are able to find the tech talents they need to help them build their products, hence improving their performance.

 

We at Cloud Employee understand every business’ need to find alternative and cost-effective staffing solutions that are crucial in their growth and performance. This is why we help businesses and firms from all over the world find the skilled offshore Scala developers they need at competitive industry rates and in as fast as two weeks.

 

For more information on software development outsourcing costs, here is a helpful blog on offshore developer rates from different outsourcing regions. 

What interview techniques should you use to hire the best Scala developer?

In interviews, it’s crucial to remember that it’s not about having many questions to ask. To be able to assess a candidate’s skills properly, you have to be prepared with the right questions.

 

Start the interview by asking the usual generic questions to get an idea of their personality, previous work experiences, as well as their work ethics. It’s also important to note that making the interviewee feel at ease and comfortable will help you get better and more accurate answers.

 

After the basic questions have been asked, it’s time to ask technical questions to test your interviewee’s knowledge on Scala development. There are plenty of technical questions you can ask, and here are some you can start with:

 

Q: What are the isInstanceOf and asInstanceOf methods used for in Scala? Is there a similar concept in Java?

A: Both isInstanceOf and asInstanceOf methods are defined in Any class, but the difference lies in this:

 

isInstanceOf method is used in testing whether the object is of a given type or not. If it is a given type, it returns “true”; otherwise, it returns “false”. See example:

scala> val str = "Hello"      
scala>str.isInstanceOf[String]
res0: Boolean = false   

On the other hand, asInstanceOf method is used to cast the object to a certain type. See example:

scala> val str = "Hello".asInstanceOf[String]
str: String = Hello

There is a similar concept in Java for Scala’s ‘isInstanceOf’ method: ‘instanceof’. On the other hand, for Scala’s ‘asInstanceOf’ method, there is also a similar concept as seen in this manual type casting:

AccountService service = (AccountService)
context.getBean("accountService");

Q: What is the keyword “object” used for in Scala?

The “object” keyword can be used for different things. Here are three of them:

 

  • To automatically create a singleton object:
object MySingletonObject

  • To automatically make an executable Scala program
object MyScalaExecutableProgram{     
    def main(args: Array[String]){       
          println("Hello World")   
     }
}

  • To define static members as static variables and static methods without using the ‘static’ keyword. See example:
object MyScalaStaticMembers{  
      val PI: Double = 3.1414    
      def add(a: Int, b: Int) = a + b
}

In this example, PI variable and add methods become static members and there’s no need to create a separate object like MyScalaStaticMembers.add(10,20) to call them.

 

Q: What is the diamond problem and how does Scala resolve this?

A: The diamond problem is also known as the multiple inheritance problem. This happens when there is an inability to decide on which method implementation to choose. For example, we have classes B and C which both inherit from class A, while we have class D which inherits from both class B and C. While implementing multiple inheritance and B and C overrides some methods from class A, there will be a problem and confusion with what D should inherit.

 

This multiple inheritance problem is resolved by Scala with the concept of Traits and class linearisation rules.

How can Cloud Employee help you?

Here at Cloud Employee, we help companies, tech startups, and SMEs hire the Scala developer they need from the Philippines’ ever-increasing pool of expert IT professionals. We’re a UK-managed IT outsourcing company committed to helping you hire offshore Scala developers through our simple, no-risk and client-oriented business process

 

To get started, simply let us know the skills and experience you need. Our team of expert recruiters conducts a local search for available Scala developers who meet your qualifications. Afterwards, we get back to you with a list of pre-screened CVs from which you select the developers you want to interview and do technical testings. We make sure you hire offshore Scala developers you need at zero recruitment fees.

 

After onboarding, your outsourced Scala developer now works exclusively for you. They work on the same working hours as you do, reporting directly to you from our modern offices.

 

Meanwhile, Cloud Employee handles everything else so you can focus on growing your business and managing your team. We take care of all HR and general administrative functions, and we also provide your outsourced Scala developer with high-spec hardware and software, fast internet connection, a designated workspace, and full IT support. We make sure they have everything they need to get your job done.

 

Hire offshore Scala developers to solve your IT hiring needs efficiently. Our Scala developers have a wide range of skill sets which include Java, JVM, Spring, Hibernate, Apache Struts, Java SE, Java EE, and Scala IDE.

What is the dedicated developer model?

Here at Cloud Employee, we employ the dedicated developer model in which we provide our clients with dedicated developers as well as equipment and resources tailored specifically to their project’s requirements.

 

When you gain a dedicated developer to your team, you gain an outsourced Scala developer who works 100% exclusively for you. They follow only the systems and processes you have, and they use only the tools you use. Moreover, they mirror your working hours, allowing them to work smoothly with you and be seamlessly integrated into your in-house team.

 

Along with this benefit of reduced risks in miscommunication and miscoordination, another convenience this model brings is that you only pay a single sum of money which already includes the offshore team member’s monthly salary as well as the outsourcing provider’s service fee.

 

The dedicated developer model is widely preferred by startups and companies due to the hiring flexibility that it offers. With this model, our clients can request the tech talents, equipment, and other services they need for their project anytime, helping them scale their offshore Scala development team as their business grows. 

 

Advantages

  • Highly recommended for long-term projects, especially those with a changing scope and undefined specifications
  • Works well for short-term projects with a definite scope
  • You have full knowledge and control from recruitment to candidate selection, and to the management of the offshore team
  • You have full control on quality control and assessment
  • You gain an offshore Scala developer or development team who will work exclusively for you; compared to freelance workers, your dedicated Scala developers are more focused on your objectives, goals, standards, and expectations

 

Compared to other outsourcing setups, Cloud Employee’s dedicated developer model has made task coordination and information relay in offshore development projects faster and more efficient. Ultimately, this business model has also simplified the hiring process and made the outsourcing experience a hassle-free and zero-risk experience all in all.

 

 

Why Hire Offshore Scala Developers With Cloud Employee

Beyond Value

AVG Cost

UK Developer

£40 per hour

AVG Cost

Cloud Employee Developer

£14 per hour

Clients save on average £60,000 per annum

Beyond Simple

Beyond Benefits

Beyond Expectations

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