R

Hire the Top 3% of Freelance R Developers

Toptal is a marketplace for top R developers, engineers, programmers, coders, architects, and consultants. Top companies and start-ups choose Toptal R freelancers for their mission-critical software projects.

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Clients Rate Toptal R Developers4.3 / 5.0on average across 42 reviews as of Jan 19, 2021

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Hire Freelance R Developers and Engineers

View Christopher

Christopher Karvetski

Freelance R Developer

United StatesFreelance R Developer at Toptal Since June 22, 2016

Dr. Karvetski has ten years of experience as a data and decision scientist. He has worked across academia and industry in a variety of team and client settings, and has been recognized as an excellent communicator. He loves working with teams to conceive and deploy novel data science solutions. He has expertise with R, SQL, MATLAB, SAS, and other platforms for data science.

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Romain Thalineau

Freelance R Developer

RomaniaFreelance R Developer at Toptal Since November 9, 2017

Romain is a seasoned data scientist and machine learning engineer with a Ph.D. in quantum physics and expertise in Python and the PyData stack. Having worked in three different countries for companies of all sizes, from startups to global organizations, Romain is a versatile and communicative engineer.

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RPythonDjangoComputer VisionDjango REST FrameworkPandasMATLABGitMachine LearningSeabornData ScienceArtificial Intelligence (AI)Statistical Analysis
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Alejandro Correa Bahnsen

Freelance R Developer

ColombiaFreelance R Developer at Toptal Since July 20, 2015

Alejandro holds a PhD in Machine Learning. He has over 8 years of experience developing data science projects in different areas such as credit card fraud detection, credit scoring, collections, churn, and direct marketing. He enjoys giving talks on successful applications of big data science to different organizations. Moreover he is an active contributor to several open source projects such as scikit-learn.

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RPythonSASSQLMicrosoft ExcelData ScienceMachine LearningDeep LearningBig DataAlgorithmsData Analyst
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Charles Bordet

Freelance R Developer

FranceFreelance R Developer at Toptal Since November 29, 2017

Experienced data scientist with a strong background in programming, machine learning, and statistics. He has helped a variety of clients in various industries, such as academic researchers, web startups, and Fortune 500 companies. His work spans from extracting and cleaning data to building data products backed with machine learning models.

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RSQLData ScienceLinuxPostgreSQLPandasComputer VisionMySQLData Analyst
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Pavel Vydra

Freelance R Developer

Czech RepublicFreelance R Developer at Toptal Since August 31, 2016

Pavel has over a decade of experience in data science and product development, especially focusing on product, project, and process management. With a strong data background, his focus has been on finding the right balance between the key value-add features and cost-effective solutions.

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RSQLjQueryTableauBusiness Intelligence (BI)ETLData AnalyticsData ScienceData Analyst
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Timofey Nevolin

Freelance R Developer

United StatesFreelance R Developer at Toptal Since June 25, 2014

Timofey is a software architect and developer with proven ability to develop efficient, scalable, and fault-tolerant server solutions for complex problems. He has excellent analytic abilities and extensive experience with big data real-time processing, server solutions, and web services.

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RJavaJavaScriptSpringSpring MVCAmazon Web Services (AWS)jQueryJava EEMySQLPostgreSQLSQLOracleAngularJS
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Rauno Viskus

Freelance R Developer

EstoniaFreelance R Developer at Toptal Since January 19, 2015

Rauno has a math/statistics background by education, but software development has been with him for quite some time now (10+ years). He's driven by innovative ways of getting stuff done but still has a feet-on-the-ground analytical way of thinking. Rauno has experience building snappy UIs, implementing machine learning models, managing databases and Kubernetes clusters, building efficient delivery pipelines, and anything in between.

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RJavaScriptExpress.jsPostgreSQL
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Mojmir Vinkler

Freelance R Developer

Czech RepublicFreelance R Developer at Toptal Since April 17, 2014

Mojmir is a full-stack data scientist with strong development skills, allowing him to handle model design, data collection, and final implementation of software. He has a strong background in statistics, machine learning, business, computer science, and predictive modeling of big data sets.

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RPythonFlaskPandasBusiness Intelligence (BI)Machine LearningApache SparkDeep Learning
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Milen Kolev Borisov

Freelance R Developer

BulgariaFreelance R Developer at Toptal Since December 11, 2015

Milen is a developer with more than ten years of experience developing software. He has extensive experience with C/C++ and Python and has been working with Angular and Bootstrap over the past year. He has an excellent grasp of mathematical/engineering modeling and in developing computational work, algorithms, web apps, and GIS software. Milen truly believes in open source development and in collaborating to create great products!

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Chris Pagnutti

Freelance R Developer

CanadaFreelance R Developer at Toptal Since June 27, 2013

Chris is a versatile developer who can adapt to any technology, methodology, or environment. Able to build full-stack applications from scratch or step right in to critical issues, he's eager to develop and implement unique and cutting-edge solutions with a keen eye for the important details.

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RPythonPHPJavaDjangoYiiLinuxPlayAngularJSGoogle APIGitMeteorAmazon Web Services (AWS)
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Carl Dunham

Freelance R Developer

United StatesFreelance R Developer at Toptal Since January 20, 2014

Carl has a lifelong passion for building software, systems, and teams. He caught the bug in college, began working with a startup the summer before graduation, and hasn't stopped since. He loves learning new languages and technologies, and most of all, he like using them to build large, interesting things.

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RPythonAgile Software DevelopmentLinuxMongoDBMySQLScientific ComputingDjango REST FrameworkVisual FoxPro

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Trustpilot
Toptal in the press

... allows corporations to quickly assemble teams that have the right skills for specific projects.

Despite accelerating demand for coders, Toptal prides itself on almost Ivy League-level vetting.

Our clients
Building a cross-platform app to be used worldwide
Thierry Jakicevic
Building a cross-platform app to be used worldwide
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3
Creating an app for the game
Conor Kenney
Creating an app for the game
1
2
3
Leading a digital transformation
Elmar Platzer
Leading a digital transformation
1
2
3
Testimonials

Tripcents wouldn't exist without Toptal. Toptal Projects enabled us to rapidly develop our foundation with a product manager, lead developer, and senior designer. In just over 60 days we went from concept to Alpha. The speed, knowledge, expertise, and flexibility is second to none. The Toptal team were as part of tripcents as any in-house team member of tripcents. They contributed and took ownership of the development just like everyone else. We will continue to use Toptal. As a start up, they are our secret weapon.

Brantley Pace, CEO & Co-Founder

Tripcents

I am more than pleased with our experience with Toptal. The professional I got to work with was on the phone with me within a couple of hours. I knew after discussing my project with him that he was the candidate I wanted. I hired him immediately and he wasted no time in getting to my project, even going the extra mile by adding some great design elements that enhanced our overall look.

Paul Fenley, Director

K Dunn & Associates

The developers I was paired with were incredible -- smart, driven, and responsive. It used to be hard to find quality engineers and consultants. Now it isn't.

Ryan Rockefeller, CEO

Radeeus

Toptal understood our project needs immediately. We were matched with an exceptional freelancer from Argentina who, from Day 1, immersed himself in our industry, blended seamlessly with our team, understood our vision, and produced top-notch results. Toptal makes connecting with superior developers and programmers very easy.

Jason Kulik, Co-Founder

ProHatch

As a small company with limited resources we can't afford to make expensive mistakes. Toptal provided us with an experienced programmer who was able to hit the ground running and begin contributing immediately. It has been a great experience and one we'd repeat again in a heartbeat.

Stuart Pocknee , Principal

Site Specific Software Solutions

We used Toptal to hire a developer with extensive Amazon Web Services experience. We interviewed four candidates, one of which turned out to be a great fit for our requirements. The process was quick and effective.

Abner Guzmán Rivera, CTO and Chief Scientist

Photo Kharma

Sergio was an awesome developer to work with. Top notch, responsive, and got the work done efficiently.

Dennis Baldwin, Chief Technologist and Co-Founder

PriceBlink

Working with Marcin is a joy. He is competent, professional, flexible, and extremely quick to understand what is required and how to implement it.

André Fischer, CTO

POSTIFY

We needed a expert engineer who could start on our project immediately. Simanas exceeded our expectations with his work. Not having to interview and chase down an expert developer was an excellent time-saver and made everyone feel more comfortable with our choice to switch platforms to utilize a more robust language. Toptal made the process easy and convenient. Toptal is now the first place we look for expert-level help.

Derek Minor, Senior VP of Web Development

Networld Media Group

Toptal's developers and architects have been both very professional and easy to work with. The solution they produced was fairly priced and top quality, reducing our time to launch. Thanks again, Toptal.

Jeremy Wessels, CEO

Kognosi

We had a great experience with Toptal. They paired us with the perfect developer for our application and made the process very easy. It was also easy to extend beyond the initial time frame, and we were able to keep the same contractor throughout our project. We definitely recommend Toptal for finding high quality talent quickly and seamlessly.

Ryan Morrissey, CTO

Applied Business Technologies, LLC

I'm incredibly impressed with Toptal. Our developer communicates with me every day, and is a very powerful coder. He's a true professional and his work is just excellent. 5 stars for Toptal.

Pietro Casoar, CEO

Ronin Play Pty Ltd

Working with Toptal has been a great experience. Prior to using them, I had spent quite some time interviewing other freelancers and wasn't finding what I needed. After engaging with Toptal, they matched me up with the perfect developer in a matter of days. The developer I'm working with not only delivers quality code, but he also makes suggestions on things that I hadn't thought of. It's clear to me that Amaury knows what he is doing. Highly recommended!

George Cheng, CEO

Bulavard, Inc.

As a Toptal qualified front-end developer, I also run my own consulting practice. When clients come to me for help filling key roles on their team, Toptal is the only place I feel comfortable recommending. Toptal's entire candidate pool is the best of the best. Toptal is the best value for money I've found in nearly half a decade of professional online work.

Ethan Brooks, CTO

Langlotz Patent & Trademark Works, Inc.

In Higgle's early days, we needed the best-in-class developers, at affordable rates, in a timely fashion. Toptal delivered!

Lara Aldag, CEO

Higgle

Toptal makes finding a candidate extremely easy and gives you peace-of-mind that they have the skills to deliver. I would definitely recommend their services to anyone looking for highly-skilled developers.

Michael Gluckman, Data Manager

Mxit

Toptal’s ability to rapidly match our project with the best developers was just superb. The developers have become part of our team, and I’m amazed at the level of professional commitment each of them has demonstrated. For those looking to work remotely with the best engineers, look no further than Toptal.

Laurent Alis, Founder

Livepress

Toptal makes finding qualified engineers a breeze. We needed an experienced ASP.NET MVC architect to guide the development of our start-up app, and Toptal had three great candidates for us in less than a week. After making our selection, the engineer was online immediately and hit the ground running. It was so much faster and easier than having to discover and vet candidates ourselves.

Jeff Kelly, Co-Founder

Concerted Solutions

We needed some short-term work in Scala, and Toptal found us a great developer within 24 hours. This simply would not have been possible via any other platform.

Franco Arda, Co-Founder

WhatAdsWork.com

Toptal offers a no-compromise solution to businesses undergoing rapid development and scale. Every engineer we've contracted through Toptal has quickly integrated into our team and held their work to the highest standard of quality while maintaining blazing development speed.

Greg Kimball, Co-Founder

nifti.com

How to Hire R Developers through Toptal

1

Talk to One of Our Industry Experts

A Toptal director of engineering will work with you to understand your goals, technical needs, and team dynamics.
2

Work With Hand-Selected Talent

Within days, we'll introduce you to the right R developer for your project. Average time to match is under 24 hours.
3

The Right Fit, Guaranteed

Work with your new R developer for a trial period (pay only if satisfied), ensuring they're the right fit before starting the engagement.

FAQs

  • How are Toptal R developers different?

    At Toptal, we thoroughly screen our R developers to ensure we only match you with talent of the highest caliber. Of the more than 100,000 people who apply to join the Toptal network each year, fewer than 3% make the cut. You'll work with engineering experts (never generalized recruiters or HR reps) to understand your goals, technical needs, and team dynamics. The end result: expert vetted talent from our network, custom matched to fit your business needs. Start now.

  • Can I hire R developers in less than 48 hours through Toptal?

    Depending on availability and how fast you can progress, you could start working with an R developer within 48 hours of signing up. Start now.

  • What is the no-risk trial period for Toptal R developers?

    We make sure that each engagement between you and your R developer begins with a trial period of up to two weeks. This means that you have time to confirm the engagement will be successful. If you're completely satisfied with the results, we'll bill you for the time and continue the engagement for as long as you'd like. If you're not completely satisfied, you won't be billed. From there, we can either part ways, or we can provide you with another expert who may be a better fit and with whom we will begin a second, no-risk trial. Start now.

Tap Into World-Class Talent

  • Trusted Experts Only

    Trusted Experts Only

    All of our talent are seasoned experts who ramp up quickly, readily contribute as core team members, and work with you to minimize onboarding time.

  • The Right Fit

    The Right Fit

    We have a knack for matching you with the right fit. Start working with your new hire on a no-risk trial period, paying only if satisfied.

  • Scale as Needed

    Scale as Needed

    Hire in under 2 weeks and scale your team up or down as needed, no strings attached.

  • Seamless Hiring

    Seamless Hiring

    We handle all aspects of billing, payments, and NDA’s. Let us take care of the overhead while you focus on building great products.

  • Flexible Engagements

    Flexible Engagements

    Choose the engagement type that suits your needs — hourly, part-time, or full-time — with the ability to change anytime.

  • Expert Talent Matching

    Expert Talent Matching

    Focus on your project and enjoy support from your dedicated account executive and expert talent matcher.

Featured Toptal R Publications

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Stars Realigned: Improving the IMDb Rating System

by Juan Manuel Ortiz de Zarate
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Boost Your Data Munging with R

by Jan Gorecki
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Top R Developers are in High Demand.

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