Hire the top 3% of freelance Open Source developers.

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

Dan Lecocq, United States

Member since May 6, 2014
Dan is an engineer and cowboy coder with a background in big data and distributed systems. He has extensive experience with profiling, optimization, asynchronous network I/O, and getting huge amounts of work pushed through a pipeline reliably and efficiently. Click to continue

Ivan Voras, Croatia

Member since June 18, 2014
Ivan is primarily a back-end developer with 10+ years of experience in architecting and implementing server-side solutions, including non-web-related distributed platforms such as Bitcoin, chat servers, and general client-server solutions. He has handled DBA operations, developed modules for PostgreSQL, operating system kernel modules (FreeBSD), and new algorithms. He is interested in general client-server problems and distributed apps. Click to continue
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“Toptal allows corporations to quickly assemble teams that have the right skills for specific projects.”
Steven Norton
“One of their engineers from Colombia has joined our team as a full-time developer for more than 6 months, sometimes flying to work on-site in New York City with us. He is one of the best developers I've ever worked with.”
Carter Cleveland
CEO @ Artsy
“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
“Dave as a developer was absolutely fantastic! The guidance that he provided us will allow us to make tremendous improvements to the next version of our application.”
Baroni Parson
IT Manager @ City Real Estate Advisors, Inc.
“Toptal has been extremely helpful to us in finding top remote talent. The ratio from interview to hire with Toptal candidates is the highest I've ever experienced in my professional career.”
Philipp Berner
Co-founder and CTO @ KeepSafe
“We've actually remodeled the way we do our work to take advantage of Toptal's capabilities. We develop pseudo code with some code fragments and send to our Toptal developer with a specific task set. The work is then further processed by the next group of Toptal engineers. It's been very efficient and we've seen a massive improvement in our development speed.”
William North
CTO & Co-Founder @ Swizly
“I’m a big believer in the saying, ‘hire smart, or manage tough’. For us non-hackers, Toptal takes the guesswork out of hiring. Their coders are vetted, and the work is guaranteed. Why look anywhere else?”
Greg Archbald
Founder & CEO @ Greasebook
“Best talent is here for sure. Toptal hiring and overall working experience has been wonderful. This is way better and faster than any other means of getting top talent.”
Rajesh Nagarajan
Co-Founder & CTO @ maxMantra
“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
“I'm incredibly impressed with Toptal. What I'm experiencing is something so different from what I'm used to. Our developer is communicating with me constantly every day, and he is a very powerful coder. His work is just excellent, and he is a true professional. I'm really pleased so far. 5 stars for Toptal.”
Pietro Casoar
CEO @ Ronin Play Pty Ltd
“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
“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
“Working with Marcin is a joy, I can't find a better word. He is competent, professional, flexible, and extremely quick to understand what is required -- and to implement it -- even if the source code that's given to him is, shall we say, less than optimally elegant and clear. Oh and he has the same sense of humour as me. ;)”
André Fischer
CTO @ App Promotions
“We recently launched our app with the help of Toptal and Nikola, an iOS developer. I was immediately impressed with the constant communication, detail, and level of talent that Nikola brought to the table. More importantly, when the project was underway, Nikola proactively provided creative workarounds for unforeseen hurdles and challenges. I couldn't be happier with our engagement and would highly recommend Nikola and Toptal.”
Chip O'Toole
Founder @ Humans Helping Robots LLC
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