Hire the top 3% of freelance
Cython developers.

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

Adnan Ademovic, Bosnia and Herzegovina

Member since May 12, 2015
Adnan is an engineer with experience in desktop, embedded, and distributed systems. He has worked extensively in C++ (working at both low and high levels), Python, and in other languages. He is experienced in developing complex algorithms and intelligent systems, optimization, networking, and signal processing. He is very passionate about problems faced by robotics and mechatronics in general. Click to continue

Allen Gary Grimm, United States

Member since October 17, 2014
Fascinated by the intersection of abstraction and reality, Allen found his calling in data science. Formally trained in Machine Learning and with a breadth of experience in applying ML models to production, his specialty is in finding tractable solutions to complex data modeling problems (user behavior prediction, recommender systems, NLP, and intelligent data cleaning). Click to continue

Logan Raarup, Denmark

Member since July 6, 2015
Logan is a full-stack engineer who has been developing web applications for more than 14 years. He has worked with a wide variety of organizations, ranging from startups to large corporations, on projects that required knowledge about web applications, distributed systems, scientific computing, and embedded software. Nowadays, his primary tools are Node.js, Meteor, Ruby on Rails, Python, and PHP. Click to continue

Vladyslav Millier, Cyprus

Member since November 11, 2013
Vlad is self-motivated, versatile, positive software developer with work experience in many programming languages and frameworks. He is interested in architecting, building, and working with scalable systems and applications for complex problems. He is currently perfecting his knowledge of Scala and machine learning. Click to continue

Thomas Reinhardt, Germany

Member since March 11, 2015
Thomas started programming at the age of 9, and is fascinated by the world of computer vision, AI, and robotics. He has been working as a freelancer for about a decade. His focus is on algorithm development for challenging computer vision and machine learning tasks. He is a great communicator and an enthusiastic developer. Click to continue

Yasser Rashwan, Egypt

Member since August 4, 2015
Yasser is passionate about algorithms and problem solving. He enjoys taking on big problems, optimizing solutions, and providing insightful methods for solving those solutions. Yasser interned at Palantir Technologies where he worked with brilliant engineers from all over the world in an attempt to provide data-driven solutions to various customers. He is eager to learn and has the fundamentals necessary to make an immediate impact. Click to continue

Franco Risso, Argentina

Member since December 19, 2014
Franco has been working on PHP, MySQL, and JavaScript since the dark days of Internet Explorer 5. He loves REST APIs to separate consumers from providers and TDD to improve code quality. He thrives in Laravel framework for PHP and AngularJS for JavaScript. He has read extensively on startups and believes in their potential to bolster the economy and social progress. He is a proactive individual, constantly striving to improve his work. Click to continue

Marcin Kosztołowicz, Poland

Member since March 5, 2015
A year ago, Marcin earned the master's degree in computer science and currently is a student of philosophy. During his studies, he worked as an Android developer for 2 years. Then, he participated in projects related to data analysis. Recently, he has been associated with a cognitive science laboratory. His passion for solving problems demonstrates his intense focus and desire to learn and use new technologies. Click to continue

Mauro Schilman, Argentina

Member since April 30, 2015
While in high school, Mauro competed in several international math Olympiads and has since continued his love for problem solving and abstract thinking. He completed a master's degree in computer science and mathematics, and has done two internships with Google as an undergraduate. Click to continue

Andrey Bryzgalov, Russia

Member since May 12, 2014
Andrey is professional developer with 10 years of experience and a proven ability to develop efficient solutions for numerous platforms. He specializes in developing games and interactive virtual and augmented reality projects. He has worked both individually and as a group leader. Click to continue
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CEO @ ConsumerAffairs
“The task of finding and hiring the right developers and programmers can be daunting, especially for startups. After sifting through countless unfit freelancers, we came across Toptal. They were able to fill our open position in no time, and I'd highly recommend the service!”
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CEO @ Tubestart
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Product Lead @ ClassDojo
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Savannah de Savary
Founder @ Industry Hub
“Toptal was the best thing to happen to my web app. Initially, I hired a team of freelancers from India through another freelancing website—which was a nightmare. In fact, it was so bad that I had to start again from scratch, which is when I found Toptal. The experiences were like night and day. It was so refreshing to get partnered up with a quality developer that I could trust due to Toptal's extensive screening process. I will only use Toptal from now on and highly recommend you do the same.”
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CEO @ HootRecruit
“We have been incredibly happy with our Toptal experience. Initially a skeptic, the process to find and recruit a fabulous iOS developer was very easy. Rather than sifting through hundreds of CVs, we saw two and hired them. They have worked effectively, getting up to speed incredibly quickly and have almost become part of the team. We would definitely use Toptal again. ”
James O'Day
Co-Founder @ Pearlshare
“We've used Toptal developers multiple times for multiple projects, and they've always been world-class—regardless of whether they've been from South Africa, Brazil, or the United States.”
Alex Haro
CEO @ Life360
“I struggled for weeks with a Youtube API-specific problem and couldn't find anyone to solve it. Toptal immediately identified the right consultant who took the time to investigate the issue and resolve it quickly. The process was seamless and I will continue to use Toptal with any other issues that arise.”
Rohit Gupta
CEO @ Bollyshake
“Working with Enrique has been a pleasure and a relief. His knowledge in the IT space is broad and in-depth. Zoomedia has been in need of this level of support for some time and I feel confident we are an exponentially stronger team with Enrique on board.”
Justin Bane
Senior Technical Lead @ Zoomedia
“My business relationship with Toptal has been nothing short of terrific. From reviewing my project with their team to choosing a highly-talented developer, and all the way through releasing our application, it has been an incredibly smooth and successful experience.”
Gary Craig
Senior Analyst @ NetApp
“We had a wonderful experience with our Toptal consultant. He was very reliable and punctual, delivering excellent work on a budget—we will certainly be using him again!”
Barbara Karpf
President @ DecoratorsBest
“We needed a talented developer and we needed him/her very quickly. So we turned to Toptal and couldn't be happier with the results! Our Toptal freelancer has contributed extraordinary knowledge, talent, and startup experience to our team. We will continue to work with Toptal to fulfill our future talent needs.”
Lindsay Fairman
Founder & Owner @ FairTech Labs, LLC
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