Freelance Data Science jobs for world-class engineers

At Toptal, you’ll work on freelance Data Science jobs and projects with top clients who understand the value of elite engineering talent. As a former Data Scientist or Machine Learning Engineer, you gain the opportunity to design your own schedule, get real-time help from a global community of experts, and enjoy top professional development opportunities.

Hiring data scientists? Learn more about Toptal.

Why should you use Toptal to build your career?

At Toptal, you’ll always have plenty of opportunities available to grow personally and professionally. From working with cutting-edge technologies to getting real-time feedback from a global community of top developers, there are always options for creating value for yourself here.

Grow your career by working with top companies

Grow your career by working with top companies

At Toptal, you’ll choose from projects with industry leaders like Airbnb and NetApp and learn cutting-edge technologies and skills.

Never worry about payments

Never worry about payments

At Toptal, you set your own rate, always get paid on time, and never have to worry about negotiating with clients or competing with cheap, inexperienced developers.

Design your own lifestyle

Design your own lifestyle

No offices, no useless meetings, and no mandatory hours. You choose your own availability and enjoy the freedom to work from wherever you want.

Learn from peers and take advanced technical courses

Learn from peers and take advanced technical courses

Have a bug? Ping the Toptal Slack Community for real-time, on-demand support from a global network of top engineers. Want to learn a new skill? The Toptal Academy is designed to help you rapidly gain professional expertise in a new technology.

Get featured on the Toptal Engineering Blog

Get featured on the Toptal Engineering Blog

With hundreds of thousands of subscribers, hundreds of advanced technical studies, and frequent syndication requests from top industry publications, publishing on the Toptal Engineering Blog is a unique chance to show off your top work to the best in the industry.

Speak at conferences and attend events

Speak at conferences and attend events

Not only will you be able to attend Toptal Community events in cities all around the world, but as part of the Toptal Speakers Network, we’ll also help you attend leading conferences, submit papers, and prepare and deliver keynote speeches.

Meet members of the Toptal Data Science community:

Katia Hayati

Sunnyvale, CA, United States

Katia has worked for twelve years as an engineer, hands-on engineering manager, and consultant. She has worked at companies of all sizes... Read More

Darin Erat Sleiter

Florianópolis - State of Santa Catarina, Brazil

Darin is a data scientist and engineer with a PhD in physics from Stanford. He's passionate about data and machine learning and has work... Read More

Eva Bojorges Rodriguez

Texcoco, Mexico

Eva is a skilled back-end developer and machine learning engineer with experience in scalability issues, system administration, and more... Read More

Radek Ostrowski

Sydney, New South Wales, Australia

Radek is a certified Toptal Blockchain Engineer particularly interested in Ethereum and smart contracts. In the fiat world, he is experi... Read More

Pedro Alves Nogueira

Porto, Portugal

Pedro is a senior researcher and prototype developer with a PhD in AI, human-computer interaction, and affective computing. His backgrou... Read More

Oliver Holloway

London, United Kingdom

Oliver is a versatile data scientist and software engineer combining several years of experience and a postgraduate mathematics degree f... Read More

Renee Ahel

Zagreb, Croatia

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 ha... Read More

Aljosa Bilic

Zürich, Switzerland

Aljosa is a data scientist and developer who has more than eight years of experience building statistical/predictive machine learning mo... Read More

Christopher Karvetski

Charlotte, NC, United States

Dr. Karvetski has ten years of experience as a data and decision scientist. He has worked across academia and industry in a variety of t... Read More

Benjamin Wilson, Ph.D.

Berlin, Germany

Ben is a Ph.D. mathematician and computer scientist with exceptional practical skills and extensive experience with machine learning sys... Read More

Pavel Vydra

Prague, Czech Republic

Pavel has over a decade of experience in data science and product development, especially focusing on product, project, and process mana... Read More

See 3 typical Data Science jobs you’ll have access to at Toptal:

Top clients, ranging from industry-leaders to rapidly growing start-ups, use Toptal to hire elite data scientists for their mission-critical jobs.

Data Scientist
Data Science, Machine Learning, Big Data

We are a popular online learning platform with millions of users leading the way in connecting students with instructors around the world. We would like to hire a talented Data Scientist to help us analyze data and pull out interesting insights and patterns. The ideal hire will be creative, enjoy working collaboratively and cross-functionally, and have experience with data visualization.

Machine Learning Engineer
Data Science, Python, TensorFlow, AWS

We are a digital creative platform with a large client base working to democratize access to digital content. We are looking for a Machine Learning Engineer to join our product and data team produce predictive models using AWS, TensorFlow, and other tools. The ideal developer will have experience analyzing data and building regression models.

Chief Automation Engineer
Python, Data Science, Kubernetes

We are a healthcare startup using big data and machine learning to automate healthcare news. We are looking to hire an automation engineer to work directly with our CEO to optimize our automation platform using Kubernetes. The output of this project will be a platform that enables the company to scale across many users and allow for the automation of their work.

Enjoy competitive, worry-free compensation.

At Toptal, you set your own rates and never have to spend time marketing yourself, billing clients, etc. Most Toptalers make substantially more through Toptal than they did at their previous jobs, and we’ll always pay you on time, even if clients have not yet paid us. Never worry about payments again.

Trusted by:
HP Enterprises worked with Toptal to add freelance developers to their team in Israel.
Airbnb trusted Toptal to help hire programmers to support their Berlin office.
Zendesk trusted Toptal contractors to develop their key software applications.
Thumbtack hires software engineers from Toptal for their mission-critical initiatives.
Shopify logo
NetApp hires software engineers from Toptal for their mission-critical initiatives.

Design your own lifestyle.

At Toptal, you can choose your own schedule and work from anywhere in the world that has Internet. Whether you want to spend more time at home with your family or start traveling and work from exotic beaches, the choice is completely up to you. No offices, no mandatory hours, just complete freedom to work in the way that suits you best.

Join tech conferences, advanced skill development sessions, and more.

Not only will you be able to attend Toptal Community events in cities all around the world, but if you join the Toptal Speakers Network, we'll also help you attend leading conferences, submit papers, and prepare and deliver keynote speeches.

Publish technical papers alongside data scientists on the Toptal Engineering Blog.

The Toptal Engineering Blog features hundreds of thousands of subscribers, daily in-depth technical studies, and frequent syndication requests from leading publications across the tech industry. By joining, you’ll be able to publish on the Toptal Engineering Blog and show your top work off to a global audience of data scientists.

Why do top Data Science experts join Toptal?

Dilip Mathew Thomas

Machine Learning Developer
Kerala, India

Along with having earned a PhD in computer science and engineering, Dilip has over a decade of experience in the industry. Since 2015, he’s been focusing on projects related to machine learning and deep learning for computer vision. Dilip has an eye for detail which helps in identifying data biases and developing models for image classification of fine-grained data, object detection, text recognition, image translation, and face recognition.

Toptal gives me the opportunity to work on challenging projects in Artificial Intelligence and Data Science. I find the work at Toptal absolutely rewarding since it requires me to develop cutting-edge solutions and, in the process, pushes my boundaries in this rapidly evolving field.

João Filgueiras

AI Researcher
Porto, Portugal

João is an accomplished researcher and prototype developer with a special talent for breaking down large problems into solvable pieces. His background in R&D gives him the edge in implementing efficient, effective, and sophisticated yet clean solutions.

Being part of Toptal has allowed me to pursue several of the most interesting projects I've ever worked on, especially when it comes to AI and Data Science. From music recommendation engines to complex NLP tasks in healthcare, I have had the opportunity to put my expertise to good use in concrete and challenging projects. If that weren't enough, I've also met incredible people, clients, and colleagues alike, learning a lot in the process.

By joining Toptal, you’ll have full flexibility over which projects you choose and when you want to work.

Aside from enjoying the benefits of our amazing community, you’ll have full flexibility to accept or reject projects as you prefer. Whether you prefer to work full-time at Toptal or you’d rather just take on occasional hourly jobs, the choice is yours.