Hire the top 3% of freelance algorithm developers.

Toptal is a marketplace for top algorithm developers, programmers, coders, and architects. Top companies and start-ups choose Toptal freelance algorithm developers for their mission critical software projects.
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Etienne de Boursetty, United States

Member since April 10, 2016
Etienne has been working in the financial industry for 10 years, building models and market analysis tools for traders at world class financial institutions and hedge funds. Working primarily in C#, he has designed and developed large scale data analysis platforms th... Click to continue

Aljosa Bilic, Switzerland

Member since May 30, 2016
Aljosa is a data scientist and developer. He has more than 6 years of experience analyzing noisy data sets and building statistical/predictive machine learning models combined with designing and developing the decision support tools and web applications that provide ... Click to continue

Arthur Stankevich, Russia

Member since February 18, 2016
Arthur has 15 years of professional software development, mostly with .NET and SQL Server. He started with simple database applications, moved to client-server application development and project management for real-time systems with clients and servers distributed o... Click to continue

Raphael do Vale Amaral Gomes, Brazil

Member since April 6, 2016
Raphael has over a decade of experience in developing web apps including coding, project planning, and specification. He has worked in several Java and JavaScript projects during his career. His technology stack involves Java, Spring, relational databases, and JavaSc... Click to continue

Konstantin Medvedev, Canada

Member since November 28, 2015
Konstantin is a software engineer with more than eighteen years of financial sector database work. He has long term experience in the development and performance optimization of large databases with diverse data structures. His SQL and DB creation skills are top-not... Click to continue

Richard Hardebeck, United Kingdom

Member since February 2, 2016
Richard has worked at a broad range of companies from small startups to large multinationals with often overlapping roles of software developer, quantitative analyst, and financial market professional. He is comfortable with all aspects of software development, from ... Click to continue

Maksim Sipos, United Kingdom

Member since May 22, 2015
Max's academic background is in numerical computational physics (Ph.D.). He worked as a quant developer on Wall Street, and then as a data scientist consultant in finance and internet companies. Max writes full-stack, production-level, high-performance, distributed s... Click to continue

Ronald In 't Velt, Netherlands

Member since May 12, 2016
Ronald has over 15 years of experience in designing and developing IT solutions, working with startups as well as Fortune 500 companies. He currently develops mobile apps using the Xamarin cross-platform environment, using C# in Visual Studio, and also develops nati... Click to continue
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