Hire the top 3% of freelance data scientists.

Toptal is a marketplace for top data scientists. Top companies and start-ups choose Toptal Data Science freelancers for their mission-critical software projects.

No-Risk Trial, Pay Only If Satisfied.

We've been blown away by the level of talent we've been able to hire through Toptal.

Brad Rozran, Optimizely

Trusted by leading brands and startups

Our Exclusive Network of Data Scientists

Katia Hayati

Data Scientist

Katia has worked for twelve years as an engineer, hands-on engineering manager, and consultant. She has worked at companies of all sizes, from tiny two-pers...on startups to major enterprises including Groupon and Microsoft. She specializes in data processing, data-related algorithms, searching, and machine learning, but she has worked up and down the whole stack. 

Hire Katia

Darin Erat Sleiter

Data Scientist

Darin is a data scientist and engineer with a PhD in physics from Stanford. He's passionate about data and machine learning and has worked on data science p...rojects across numerous industries and applications. Darin's co-founded an AI company and led a team of data scientists to build a product which uses machine learning and optimization techniques to reduce energy consumption in data centers. He's eagerly waiting for quantum computers. 

Hire Darin

Eva Bojorges Rodriguez

Data Scientist

Eva is a skilled back-end developer and machine learning engineer with experience in scalability issues, system administration, and more. She has a flair fo...r well-structured, readable, and maintainable applications and excellent knowledge of Python, Ruby, and Go. She is a quick learner and has worked in teams of all sizes. 

Hire Eva

Radek Ostrowski

Data Scientist

Radek is a certified Toptal Blockchain Engineer particularly interested in Ethereum and smart contracts. In the fiat world, he is experienced in big data/ma...chine learning projects. He is a triple winner in two different international IBM Apache Spark competitions, co-creator of PlayStation 4's back-end, a successful hackathon competitor, and speaker at conferences in Australia, Poland, and Serbia. 

Hire Radek

Pedro Alves Nogueira

Data Scientist

Pedro is a senior researcher and prototype developer with a PhD in AI, human-computer interaction, and affective computing. His background in academic and s...tartup environments give him an edge in implementing state-of-the-art, elegant, and efficient custom-built solutions. Additionally, his experience as director of engineering for a multi-million dollar startup makes him an expert communicator and project manager. 

Hire Pedro

Oliver Holloway

Data Scientist

Oliver is a versatile data scientist and software engineer combining several years of experience and a postgraduate mathematics degree from Oxford. Career a...ssignments have ranged from building machine learning solutions for startups to leading project teams and handling vast amounts of data at Goldman Sachs. With this background, he is adept at picking up new skills quickly to deliver robust solutions to the most demanding of businesses. 

Hire Oliver

Renee Ahel

Data Scientist

Renee is a data scientist with over ten years of experience, and five years as a full-stack software engineer. For over ten years, he has worked in internat...ional environments, with English or German as a working language. This includes 2.5 years working remotely for German client companies and 9 months working remotely as a member of the Deutsche Telekom international analytics team. 

Hire Renee

Aljosa Bilic

Data Scientist

Aljosa is a data scientist and developer who has more than eight years of experience building statistical/predictive machine learning models, analyzing nois...y data sets, and designing and developing decision support tools and services. He joined Toptal because freelancing intrigues him, and the best projects and people are to be found here. 

Hire Aljosa

Christopher Karvetski

Data Scientist

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 setti...ngs, 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. 

Hire Christopher

Benjamin Wilson, Ph.D.

Data Scientist

Ben is a Ph.D. mathematician and computer scientist with exceptional practical skills and extensive experience with machine learning systems. He has worked... extensively with large clients in real-time bidding, recommender systems, knowledge management, and NLP (from research to implementation of the system in production). 

Hire Benjamin

Pavel Vydra

Data Scientist

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

Hire Pavel

Hire Data Scientists Seamlessly with Toptal

1
Talk to One of Our Industry Experts
A Toptal director of engineering will work 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 data scientist for your project. Average time to match is under 24 hours.
3
The Right Fit, Guaranteed
Work with your new data scientist for a trial period (pay only if satisfied), ensuring they're the right fit before starting the engagement.

FAQs

  • How are Toptal data scientists different?

    At Toptal, we thoroughly screen our data scientists to ensure we only supply experts of the highest caliber. Of the more than 100,000 people who apply to join the Toptal network each year, we accept fewer than 3%. You'll work with engineering experts (never generalized recruiters or HR reps) to understand your goals, technical needs, and team dynamics. The end result: expertly-matched talent from our network, hand-selected to fit your business needs.

  • What is the no-risk trial period for data scientists?

    We make sure that each engagement between you and your data scientist 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.

  • How fast can I hire data scientists through Toptal?

    Depending on availability and how fast you can progress, you could start your no-risk trial with a data scientist within 48 hours of signing up. Most of our engagements start within 2 weeks of discussing your project with us.

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 Data Scientists are in high demand.

Get Started