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

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

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. He seeks new ways to empower decision making with data. With his Masters of Science degree in Computational Intelligence and experience in data mining and predictive modeling, his speciality is in clustering, modeling, and predicting user behavior. 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

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

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

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

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

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

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

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
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Testimonials
“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
“Our experience with Toptal was very good. We had an open ended development project when we got started and the programmer from Toptal was very helpful, working with us on everything from the top level outline all the way down to development and delivery of functioning code." ”
Michael Milton
VP of Engineering @ SLANTRANGE
“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
“We've had multiple needs for various development talent and Toptal doesn't disappoint. They truly focus on matching the best developer to our specific engagements, and they continue to stay connected in an effort to exceed our expectations at all times”
Mindle Hastings
Sr. Product Manager @ Bodybuilding.com
“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 really enjoy working with Toptal. The experience has been very positive, and we'd recommend it to anyone seeking developers on-demand.”
Jeff Kerr
CEO @ CaseFleet
“Toptal has provided us developers for a wide range of projects. They are quick to provide candidates, and always very quick in communication. We have been happy with the quality of work from the developers as well as the Toptal representatives. Highly recommend!”
Gena Romano
Vice President of Digital @ VOX Global
“With the pressure on and millions watching the Cleveland Cavaliers during the NBA Playoffs, Toptal delivered the talent and expertise needed to launch a brand new fan engagement platform.”
Conor Kenney
Director of Professional Services @ Cleveland Cavaliers
“Andrea is doing an amazing job. I don't think we could have gotten a better person. He is fun to work with, he thinks out of the box, and he is extremely knowledgeable in what he is going. He not only does an excellent job, he also helps our company to differentiate our business model further (e.g. making our app offline-capable). I would recommend Andrea as well as Toptal any time to any friend.”
Pascal Girardat
Co-Founder / CEO @ Lifestage Solutions AG
“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
“When you're growing quickly and your internal resources are strapped, you need to find a way to move forward regardless. We couldn't have done it without Toptal. From content creation to programming and design, we were able to leverage the expertise of Toptal's network to move even faster that we could have otherwise. They prioritized finding us the right person, not just a person. Every single one they introduced us to was not only qualified and professional, but also eager to help us.”
Josh Leskar
Manager @ Udemy
“Toptal provides a great service: Within a week of posting my job, I was matched with my developer and ended up completing the entire project with him. I'll continue to use Toptal in the future for any new development work I may need.”
Mike Jones
CEO @ DigitalDripped
“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
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