Hire the top 3% of freelance ÐApp developers.

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

Member since June 29, 2014
Michal is a senior software engineer, and community leader for Toptal Warsaw. He communicates well and takes the initiative needed to help startups scale. Michal writes clean, functional code, automates infrastructure, and enjoys coordinating and scoping tasks. As a ... Click to continue

Radek Ostrowski, Australia

Member since July 25, 2014
Radek is a certified Toptal Blockchain Engineer particularly interested in Ethereum and smart contracts. In the fiat world, he is experienced in big data/machine learning projects. He is a triple winner in two different international IBM Apache Spark competitions, co... Click to continue

Alexander Popov, Russia

Member since April 22, 2014
Alexander is a software developer with wide knowledge and rich expertise in different areas, mostly in Python and .NET/C#. He works with cutting-edge technologies and is always looking forward to new challenges. He works well in a team or as a single developer. Click to continue

Dan Napierski, United States

Member since December 20, 2015
Dan is a software architect and technology professional focusing on applications of blockchain technologies. He has years of experience providing professional consulting services to clients ranging from startups to global corporations. He specializes in bringing rigo... Click to continue