
Hire the Top 3% of Open Source Developers in 48 Hours
Toptal is a marketplace for top open source developers, engineers, programmers, coders, architects, and consultants. Top companies and startups can hire Toptal dedicated (full-time), hourly, or part-time open source freelancers for their mission-critical software projects.
Toptal's work was a crucial milestone that enabled us to scale our engineering teams and systems in step with our rapid growth.
Mark Marcantano, Calm
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Meet Open Source Developers in our Exclusive Network
Featured Talent

Charles Grady
Open Source Developer
Charles is primarily a back-end developer specializing in Python. He has more than 16 years of experience developing RESTful APIs, high-throughput computations, and cluster interfaces in an open source environment. Charles published papers, gave conference presentations, and taught domestic and international workshops showcasing the tools he created, the community infrastructure, and his research projects.

Lucian Petrut
Open Source Developer
Lucian is an avid open source contributor, having a special interest in cloud computing and storage technologies. He has proven experience working on numerous projects for 7+ years using diverse programming languages and tools. Lucian is committed to delivering high-quality code without exceeding deadlines. He's able to withstand pressure and adapt to changing requirements.

Tuomas Jaakola
Open Source Developer
Tuomas believes that code is the very essence of life. He is passionate about making tools and apps to make life easier and fun. Tuomas demands high quality of himself, and is a Linux and open source lover. Tuomas has an adventurous personality and is always ready to have new challenges and experiences.

Peter Goldstein
Open Source Developer
Peter is a hands-on developer, architect, CTO, and technical founder passionate about using best practices to quickly build high-quality products. He has over 20 years of experience building full-stack applications. Peter specializes in Ruby on Rails and Go but is a software generalist who is comfortable working in many languages. He is a committed open-source enthusiast who leverages open source to reduce both the cost and time needed to build the products and features he creates.

Rajender Koppula
Open Source Developer
Rajender is a DevOps and SRE engineer with nearly four years of expertise in building and supporting web and native SaaS solutions on Kubernetes, cloud, and OpenShift. He has experience in service and infrastructure migrations and securing and integrating with open source alternatives in CI/CD processes. Rajender has worked with automation and logging and has set up metrics.

Russell Stuart
Open Source Developer
Russell has enjoyed solving complex problems using software and hardware for decades. He paid his way through university, writing accounting systems for hospitals. Russell then formed a company to develop cash registers, writing the BIOS, the operating system, a distributed database, and networking. After selling the firm, he discovered the open-source and used it to build a computer system covering 20 sites across Australia for a firm that grew into the world's largest employer of mechanics.

Zachary Eisinger
Open Source Developer
Zachary is a full-stack developer with experience developing IaaS to power secure, fast, and reliable continuous integration and continuous deployment. He works intensively with DevOps practices and runs GitHub actions and Azure Pipelines to improve their DevOps products. In addition, Zachary has worked in the eCommerce space, focused on authentication and user identity work.

Stepan Anokhin
Open Source Developer
With a solid mathematical knowledge base and a professional software developer background, Stepan has the experience and skills to fulfill most software engineering role. During his professional career, he's worked on various projects including large enterprise systems, web development, and cloud computing. Stepan is always eager to explore new areas in computer science and apply bleeding-edge technologies.

Artak Arakelyan
Open Source Developer
Artak has over 15 years of experience in different high-tech industries. He has strong knowledge in many areas of electronics, embedded systems, and signal processing. Artak has a proven ability to develop various hardware and software systems and looks for embedded systems projects with complex functional requirements.

Shane Freed
Open Source Developer
Shane is a Java developer with 25 years of experience building enterprise apps and specializes in writing maintainable, extensible, SOLID code. While 95% of Shane's experience is in the Java realm, his passion is full-stack development with Angular. Shane has served in many different roles, including architect, team lead, lead developer, and individual contributor. While Shane doesn't always have to lead a project, his USMC background makes him perfect for lead roles and mentoring.

Mostafa Draz
Open Source Developer
Mostafa is a software engineer with over a decade of experience developing software systems, from small apps to large-scale systems used by millions of users worldwide. He has experience working with large companies, such as Google, Atlassian, and Rakuten. Mostafa has worked with several technologies, such as Java, Go, Python, JavaScript, and React. He's led projects of multiple sizes across several industries, such as tourism, airlines, project management, and data analysis.

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7.4%Pass Rate
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3.2%Pass Rate
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3%Pass Rate
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Why Organizations Choose Toptal®

Toptal gave us access to the best designers out there, saving us a lot of time and allowing us to build the best possible product.
Thierry JakircevicGeneral Manager, Digital Solutions, Bridgestone

Toptal’s talent is really excellent. They are able to work through large business problems and code incredibly efficiently.
Emily LemonSenior Director, Cleveland Cavaliers

The kind of people we looked for were hard to find. Toptal helped us achieve our goals by bringing high quality resources to bear on very short notice.
Elmar PlatzerDigital Transformation Leader, CSR

If you’ve tried working with other vendors, Toptal is going to be a different type of company to work with; they’re going to meet you where your needs are.
Matthew SchumacherSenior Product Manager, Alpha - Precision Drilling
Top open source developers are in high demand. Ready to get started?