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Find and Hire Freelance R Developers

What R Development Is and Its Popularity

R development is a developmental process based on programming in the R language. R language is a language originally developed by statisticians as an alternative for other, more expensive statistical software. It is based on open-source code. It is used for graphical and statistical computing. 

Now it has become one of the most popular languages for data analysis. It is because of the opportunities it gives. Thus, it can be used not only in programming, but also for data analysis, data storage, data management, and graphical facilities. It also gives an opportunity of implementing clustering, graphical techniques, time-series analysis, linear and non-linear modeling.

Its main features are its ability to work with large amounts of data and analyze it successfully, it can do even the most difficult analysis processes and build representative graphics and tables based on it. In addition to it, it also provides a step-by-step algorithm for using smaller programs to execute the whole program and achieve a programming task.

Also, as nowadays the demand on data science has increased a lot, more and more companies are willing to hire data scientists. And at the same time, as a result, the demand for R programmers has increased. So its popularity in the market nowadays is inevitable and it is absolutely justified as it is a unique tool with plenty of benefits. This trend underscores the importance for businesses to hire data science developer experts who are proficient in R, among other skills.

That is why you may need an R developer for your company or business project. But to hire R developers that will correspond to all your needs and help your business to achieve greater results may be a hard task in some cases. That is why we prepared this article with all the information you may need to hire your best R-developer.

Choose excellent quality and guarantees, hire R developers with us! Contact via the form below to get professional help right now!

Hard & Soft Skills

First of all, when deciding to hire R developer, it is important to learn more about this job and its specifics. And the most basic and general thing you can explore is hard and soft skills that are required for R developers.

Hard skills

The most general hard skills include:

  1. Deep skills and experience of working solely with R
  2. Additional knowledge in other languages that may include C++, Python, Java, Perl
  3. Knowledge on R integration within the other languages like PHP
  4. Knowledge in popular packages (like, for example, OpenNLP) that can help with NLP and text analysis
  5. Skills on creating time series analysis with the help of R language
  6. Skills on using of data visualization packages on R

Besides the already mentioned skills, a good R programmer should also have skills that will raise his competence. They include the following:

  1. Expertise in statistical calculations. As programming in the R language is connected with data analytics and statistics, knowledge in this field is a must have for a good specialist. R language has a large pool of different packages for data management but a developer still should be aware of the core specifics of the statistical frameworks and calculations.
  2. Knowledge in Machine Learning. A dedicated specialist should be familiar with all the AI and ML concepts for the development of more effective data models and software applications. 
  3. Skills in coding of scalable applications. Programmers should have a clue of the requirements for the scalability and the most important performance metrics that should be used to achieve it.

Soft skills

In addition to all the hard skills, a good professional should also have a range of soft skills that make working with him easier and more pleasant. Soft skills include:

  1. Good communication skills
  2. Ability to understand the task
  3. Ability to describe the working process
  4. Time-management skills

How to Find the Best R Developer

  1. Set the task and goals clearly. It is super important for you to know precisely what you are expecting from such a collaboration to set the task clearly. It is the most common and basic thing that has a huge influence on the whole working process and the quality of the results.
  2. Set the budget. One more preparing step that will help you a lot in the searching process. It can help you to determine the category of developers you are looking for. Thus, you can hire R programmers in-house or appeal to R freelance, that is super good for hiring a freelance data analyst.
  3. Choose a platform for the hiring. This step is especially important if you want to hire remote R developers. Thus, it will be great for you to check the best sites to hire R developers to find a best suiting one just for. There are a lot of them now, especially if you are looking for r/freelance.
  4. Choose candidates and interview them. Now, when you already know hard and soft skills R developers should have, you can evaluate them and choose candidates. But it is only a halfway of the choosing process, as after it you need to interview candidates and choose the best one.
  5. Describe the task and wishful results to the developer. When you have already chosen one candidate that suits you the best, you need to tell him your aspirations and results you expect from this cooperation. It is also important to check soft skills of the programmer on this step as it is 50% of the perfect results and comfortable work.

How to Interview and Hire R Language Developers

When you are willing to hire an R programmer it may be important to know some interview questions and expected answers on them. So we prepared 5 best questions to ask when you hire R developers.

  • Question:Name some data mining packages on R.

Answer: The most popular and convenient data mining packages include Arules;  data.table; GGplot; rpart and caret; Forecast.

  • Question: How will you decide which data package to use to solve the problem with the usage of R?

Answer: Answer on this question cannot be precisely determined but it will show you the depth of the knowledge a programmer has and its experience in using different packages.

  • Question: Which advantages of using the Apply family of Functions feature can you name?

Answer: This question is more deep and complex and a beginner may have no answer to it. It requires not only superficial knowledge but also more holistic and deep. This function can be used as an alternative to the loops but it is much faster and more efficient than them. Also it allows programmers to manage vectors, matrices, data frames and arrays.

  • Question: Which types of data and objects do you know in R?

Answer: There are six types of data objects that can be used in R programming. They include vector, matrix, list, data frame, factor, and array.

  • Question: Name the steps you will follow to build and evaluate a linear regression model using the R?

Answer: Such steps may include: 1. Loading the data into R. 2. After that you should make sure that data corresponds to the assumptions. 3. Then you should perform the linear regression analysis. 4. The next step is to check for homoscedasticity. 5. When all previous is done it is time to visualize the results using the graphic tools. 6. And the last step is to report the results.


  • Why should I hire an R developer?

Nowadays most of the time we spend in the digital world and it is important for business to adapt to it. As a result companies need to manage their business processes successfully. And R language is a great method to do it. That is why it is a widely used tool among thousands of companies that help them to update their websites or apps to ensure better user experience.

  • Are R developers on demand in the market now?

Yeah, the demand for R developers is really high now and it is a result of all the benefits it gives to its clients. And it is especially popular among the startups that confirms that it is a modern and good solution for the business.

  • Does R language have any limitations?

Despite all the advantages it has, there are also some limitations. Thus, such include limitations connected with the data managing. But the good news is that skilled developers know how to manage with such limitations. That is why it is important to find a great professional with a deep understanding of R language and possible nuances of working with it.

R Developer Pricing in Different Countries


*Ukrainian salaries are provided based on Mobilunity’s Recruitment Team research on the local job markets. All salaries are net and do not include the service fee (in case of hiring on a dedicated team model). The salaries are provided for comparison purposes and could be not entirely accurate. Contact us to know the exact cost of hiring a developer corresponding to the required parameters.

As you can see, hiring R developers in Ukraine will be a cost-effective decision.

Mobilunity Is a Reliable Provider of R Development in Ukraine

Mobilunity is a Ukrainian company with more than 12 years experience in providing IT services. There are more than 40 clients from 15 countries all over the world. They include such companies: Pafin, i-doit, OnTrack retail, XPLG, Zenchef, Camptocamp, Esurance, Booqable, Paidy, BYG-E and many more!

With us you can hire specialists corresponding to any kind of your needs! There are two possible ways of cooperation with us: dedicated teams of R developers that are super suitable for large projects, and part-time consultants that are a good idea for the short-term projects or projects with a small load.

Find your best R developers with us and save your money! High quality services and great results are guaranteed.

Choose excellent quality and guarantees, hire R developers with us! Contact via the form below to get professional help right now!

All salaries and prices mentioned within the article are approximate NET numbers based on the research done by our in-house Recruitment Team. Please use these numbers as a guide for comparison purposes only and feel free to use the contact form to inquire on the specific cost of the talent according to your vacancy requirements and chosen model of engagement.

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