Hire the Top 3% of Freelance A/B Testing Developers

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

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Hire Freelance A/B Testing Developers and Engineers

View Steven

Steven Calder

Freelance A/B Testing Developer

United StatesToptal Member Since November 13, 2019

Steven is a versatile data scientist who connects concepts from various fields of thought to create novel solutions and identify new areas to apply data. His work emphasizes clear communication of technical concepts via interactive visualizations and narrative storytelling, allowing decision-makers from all backgrounds to understand and take appropriate actions.

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A/B Testing DevelopersTableauPandasData AnalyticsData VisualizationBusiness Intelligence (BI)ETLMachine LearningBig DataNLTKPyTorchData PipelinesPython 3
View Nick

Nick Chikovani

Freelance A/B Testing Developer

GeorgiaToptal Member Since June 7, 2018

In addition to more than eight years of experience working as a developer and team lead for various startups, Nick brings his passion for robust, scalable, and clean-code design to every project. His specialties include real-time systems, RESTful web services, web automation, business intelligence, scalability, and open-source software. Nick is eager to take on new challenges and is fast to adapt to new development environments.

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A/B Testing DevelopersAmazon Web Services (AWS)GraphQLAmazon S3 (AWS S3)AWS LambdaAgileWebLAMPMySQLRedisUI TestingWeb App AutomationQA Automation
View Fabian

Fabian Steuer

Freelance A/B Testing Developer

IrelandToptal Member Since March 27, 2020

Fabian is a data scientist and analytics engineer with more than five years of experience using the Python data science stack. As a full-stack data scientist, Fabian is skilled in the whole data value chain—from the initial data analysis to building predictive models and deploying the solution on various cloud platforms.

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A/B Testing DevelopersPythonSQLMachine LearningData ScienceData AnalysisPandasApache Airflow
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Brian Todd

Freelance A/B Testing Developer

AustriaToptal Member Since July 3, 2019

Brian is an experienced data scientist and machine learning engineer with a track record of researching and deploying a wide range of models for natural language processing (NLP) tasks, computer vision algorithms, classical machine learning algorithms, Bayesian statistical models, time series analysis models, and large-scale data mining algorithms.

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A/B Testing DevelopersPythonGitHubData VisualizationData AnalysisSQLPandasData AnalyticsPyTorchGitData SciencePostgreSQLMySQL
View Bohdan

Bohdan Tsymbala

Freelance A/B Testing Developer

NetherlandsToptal Member Since April 19, 2020

Bohdan is a software engineer with experience in library/framework and product development, mainly in the domain of web application development. He has a strong belief in software development concepts and theories and has an interest in software modeling, programming languages, artificial intelligence, and more.

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A/B Testing DevelopersAlgorithmsSoftware EngineeringWeb ArchitectureREST APIsSpring Data JPAJava 8API DesignCSS3HTML5JavaJavaScriptTypeScript
View Ahmed

Ahmed Khaled

Freelance A/B Testing Developer

EgyptToptal Member Since March 23, 2020

Ahmed is a senior data scientist who loves to dig into his clients' problems and solve them using state-of-the-art data-driven solutions. He can design, implement, and deploy data science solutions to solve problems, optimize outcomes, or automate a process. He's worked with both small and large scale businesses. He focuses on creating business opportunities to optimize the outcome. He educates, refines, and drives himself to be a better person.

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A/B Testing DevelopersPythonArtificial Intelligence (AI)TableauPandasGitETLSQLAlgorithmsData EngineeringDeep LearningPostgreSQLMachine Learning
View Derek

Derek Owens-Oas

Freelance A/B Testing Developer

United StatesToptal Member Since January 21, 2020

Derek has a Ph.D. in statistical science and has worked as a data scientist and software developer at Xylem. A published author in the Journal of Classification, his expertise is in providing technical reports and insights with interactive visualizations. Derek's extensive knowledge of Python and R libraries, state-of-the-art methods, and ability to communicate make him an asset to any company. His specialties include text and online social network analysis.

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A/B Testing DevelopersRRStudio ShinyData ScienceData AnalyticsStatistical AnalysisData ReportingETLData VisualizationAlgorithmsData PipelinesProject ManagementAutomation
View Rahul

Rahul Anand

Freelance A/B Testing Developer

IndiaToptal Member Since February 11, 2017

Rahul is a data science professional with a blend of management expertise, technical proficiency, and business acumen. He drives results with expertise in building end-to-end solutions using algorithmic bidding, experimentation framework, and relevance and model automations.

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A/B Testing DevelopersRPython 3HadoopSparkRStudio ShinySpark MLSpark SQLAnacondaMySQLApache HiveTensorFlowData Science
View Timur

Timur Umayev

Freelance A/B Testing Developer

KazakhstanToptal Member Since October 5, 2015

Timur is a results-oriented professional with over eight years of experience in software development. He has developed native applications for two major mobile platforms, iOS and Android, including business and game projects that offer users an intuitive and friendly interface.

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A/B Testing DevelopersObjective-CiOS SDKAndroid SDKSwiftSQLiteJava
View Luca

Luca Torella

Freelance A/B Testing Developer

FranceToptal Member Since May 20, 2015

Luca is an iOS software engineer with a passion for writing maintainable, well-designed, performant, and stable software. He really enjoys user-friendly and visually appealing apps. He's a Swift enthusiast and an Apple fanatic.

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A/B Testing DevelopersObjective-CCocoa TouchSwiftXcodeiOS

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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
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Building a cross-platform app to be used worldwide
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 A/B Testing 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 A/B Testing developer for your project. Average time to match is under 24 hours.
3

The Right Fit, Guaranteed

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

FAQs

  • How are Toptal A/B Testing developers different?

    At Toptal, we thoroughly screen our A/B Testing developers to ensure we only match you with talent of the highest caliber. Of the more than 200,000 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 A/B Testing developers in less than 48 hours through Toptal?

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

  • What is the no-risk trial period for Toptal A/B Testing developers?

    We make sure that each engagement between you and your A/B Testing 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

    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

    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

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

  • 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

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

  • Expert Talent Matching

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

Top A/B Testing Developers are in High Demand.

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