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

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

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

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

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

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

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

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

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

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
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“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 helped us when we had a hiring gap we needed to fill. The developer we received was excellent, with a great work ethic and fit in very well with the team. We are very happy with the service and would definitely consider using Toptal again in future should we need additional help. ”
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CEO @ Dataloop.io
“I couldn’t have been more pleased with Toptal. They are professional, quick, well priced, and fun. I will be using them again for my next project, and the next, and the next, and the next ... ”
Mac Smith
President @ New Texas Investments
“I really enjoyed my experience with Toptal. Searching for a developer was both painless and engaging, and the first match was a perfect fit! Toptal is a fantastic way to find talented developers for small or large aspects of your project.”
Willem Shepherd
Creative Director @ Mookieyams
“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
“In our 2 years of operations this is by far the most enjoyable and productive working relationship we have had with a developer. I plan on continuing to recommend Toptal's services to other entrepreneurs I run into.”
David Sawyer
CEO @ TSOLife
“We've been very pleased with our experience working with Toptal. Their team was incredibly helpful in finding us the perfect developer for our project. The work was stellar, the communication was excellent, and we couldn't have been happier with the overall experience. We're excited to work with Toptal for more projects in the future. ”
Ryan Walker
Director, Product Management @ Rand McNally
“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
“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
“Through Toptal, we were able to find and select a senior engineer who is both very professional and easy to work with. The quality of matching that Toptal enabled has been crucial to our success, was at a fair price, and came with a much appreciated, risk-reducing trial period.”
John Olsen, Director
Director @ Bingosolutions
“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
“It has been wonderful to work with Fabian for the past two years. He is an expert in JavaScript development and has built our embeddable widget and video player. He is a quick study and is able to learn how to integrate new technologies, which is so critical for a startup. He even took the extra effort to teach others on the team. He is super responsive and often went above and beyond to help us meet deadlines (including working on weekends). Thank you Fabian. Thank you Toptal for making it so easy to find and work with amazing talent.”
Natasha Mohanty
CTO @ FEM Inc
“FundedByMe needed to quickly scale our development team to create the equity crowdfunding leg of our operation. Working with a small budget, we couldn't spend time on vetting candidates, so we turned to Toptal. They identified a stellar developer that truly set the bar when it came to delivering product.”
Arno Smit
CTO @ FundedByMe.com
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