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 startups choose Toptal A/B Testing freelancers for their mission-critical software projects.

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Hire Freelance A/B Testing Developers and Engineers

Elizabeth Eardley, PhD

Freelance A/B Testing Developer
GermanyToptal Member Since February 23, 2022

Elizabeth is a versatile data scientist, combining a strong scientific background from postdoctoral research with six years of industry experience, including Booking.com and Skyscanner. She excels at applying scientific techniques to data to support and automate decision-making, optimize products, and uncover actionable insights. Elizabeth has conducted extensive A/B testing and built and scaled multiple online experimentation platforms and optimization programs.

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Derek Owens-Oas

Freelance A/B Testing Developer
United StatesToptal Member Since January 21, 2020

Derek has a PhD in statistical science from Duke and has worked as a data scientist and software developer at Xylem. He's the founder of Tech Smart Magic. Published in the Journal of Classification and a TA of the year, he's an expert in research and teaching. He provides interactive apps, visualizations, and reports. Derek's Python and R programming, top AI and ML methods, and ability to communicate make him an asset to any company. His specialties include text data and online social networks.

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Muzammil Husnain

Freelance A/B Testing Developer
United StatesToptal Member Since May 30, 2023

Muzammil is a skilled and responsible developer who excels in crafting complex applications and brings a wealth of experience. His expertise spans diverse technical and business domains, honed over eight years. He values effective communication, organization, and collaboration and thrives in team environments. Muzammil embraces challenges and utilizes his creativity to discover innovative solutions and tackle challenges head-on.

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Zachary A. Goodman

Freelance A/B Testing Developer
United StatesToptal Member Since August 25, 2022

Zack is a silicon-valley experienced and PhD-educated data science consultant with expertise in experiments, causal effect estimation, and cloud data tools. He holds a PhD in economics with a research focus on estimating causal effects using big data. Zack has over seven years of experience using Python, SQL, etc., to answer questions using data. He enjoys helping his clients achieve their goals, whether building data pipelines, automated dashboards, or conducting ad hoc analyses.

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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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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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Ed Cupaioli

Freelance A/B Testing Developer
United StatesToptal Member Since August 17, 2022

Ed is a one-person web department with many years of experience embedded with marketing, digital, and communications teams. From enterprise websites to landing pages, he coded and optimized them all with a user-first approach driven by data. Typically the roles of developer, UX specialist, and product manager are separate, but you get all three with Ed.

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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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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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Tory Borsboom-Hanson

Freelance A/B Testing Developer
United StatesToptal Member Since October 31, 2022

Tory is a data scientist and forecasting specialist with extensive experience in experimental design, AB testing, and leadership roles. His stack of choice includes Python, SQL, Pandas, PySpark, Hadoop, MLFlow, XGBoost, and Scitkit-learn. Beyond data science and model development, he is an expert at data visualization and reporting, especially to non-technical audiences. He often remarks that "a poorly presented analysis can often be worse than no analysis at all."

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Conor Kenney
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Drilling into real-time data creates an industry game changer
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What our clients think
Clients Rate Toptal A/B Testing Developers4.3 / 5.0on average across 405 reviews as of May 27, 2024
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 startup, they are our secret weapon.

Brantley Pace

CEO & Co-Founder

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

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

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

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

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.

Find Experts With Related Skills

Access a vast pool of skilled developers in our talent network and hire the top 3% within just 48 hours.

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.

  • 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.

  • 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.

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 talent within 48 hours 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 A/B Testing Publications

Top A/B Testing Developers Are in High Demand.

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