Choose from a constant stream of top blockchain jobs while staying flexible as a freelancer.

At Toptal, you get to work on complex blockchain projects with top clients who understand the value of elite engineering talent. As a Toptaler, you can design your own schedule, get real-time help from a global community of experts, and enjoy top professional development opportunities.
Hiring blockchain developers? Learn more about Toptal.

Why should you use Toptal to build your career?

At Toptal, you’ll always have plenty of opportunities available to grow personally and professionally. From working with cutting-edge technologies to getting real-time feedback from a global community of top developers, there are always options for creating value for yourself here.
  • Grow your career by working with top companies
    At Toptal, you’ll choose from projects with industry leaders like Airbnb and NetApp and learn cutting-edge technologies and skills.
  • Never worry about payments
    At Toptal, you set your own rate, always get paid on time, and never have to worry about negotiating with clients or competing with cheap, inexperienced developers.
  • Design your own lifestyle
    No offices, no useless meetings, and no mandatory hours. You choose your own availability and enjoy the freedom to work from wherever you want.
  • Learn from peers and take advanced technical courses
    Have a bug? Ping the Toptal Slack Community for real-time, on-demand support from a global network of top engineers. Want to learn a new skill? The Toptal Academy is designed to help you rapidly gain professional expertise in a new technology.
  • Get featured on the Toptal Engineering Blog
    With hundreds of thousands of subscribers, hundreds of advanced technical studies, and frequent syndication requests from top industry publications, publishing on the Toptal Engineering Blog is a unique chance to show off your top work to the best in the industry.
  • Speak at conferences and attend events
    Not only will you be able to attend Toptal Community events in cities all around the world, but as part of the Toptal Speakers Network, we’ll also help you attend leading conferences, submit papers, and prepare and deliver keynote speeches.

Meet members of the Toptal Blockchain community:

Amaury Martiny
Paris, France
Amaury has more than five years of experience building full-stack web and mobile apps (Node.js, React, React Native). He is currently working at Parity Technologies as a blockchain app developer. He is really interested in entrepreneurship and has worked for startups of various sizes. In his spare time, he reads about machine learning and writes about hitchhiking, culture, and philosophy on his travel blog. Read more
Fabrice Triboix
London, United Kingdom
Fabrice is a software engineer with 19 years of experience who works primarily with C++, and Python. He's worked for clients such as Cisco, Samsung, Imagination Technologies, Philips, Alcatel, Sagem, and also many small- and medium-sized companies. He's also assumed managerial responsibilities working as the team lead and release manager. Read more
Radek Ostrowski
Sydney, New South Wales, Australia
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-creator of PlayStation 4's back-end, a successful hackathon competitor, and speaker at conferences in Australia, Poland, and Serbia. Read more
Andras Fuchs
Kecskemét, Hungary
Andras is one of the very first Toptal certified Blockchain specialists and he's also a Microsoft Certified .NET Application Developer. He enjoys being part of a successful high performing team delivering a positive impact for businesses on a global scale. Besides his technical knowledge, Andras has strong communication and interpersonal skills. HackerRank.com also has ranked him the top 917 (top 0.15%) algorithm programmers globally. Read more
Philip Frank
Munich, Bavaria, Germany
Lean, build, teach, repeat. Philip is a self-taught full-stack software engineer with 9 years of experience working mostly on web and Android projects. He values openness and transparency a great deal so that he can understand why decisions are made in a certain way and can voice any doubts early on. In addition, learning and teaching is an important part of being a good engineer for him. Read more
Antonios Minas
Athens, Central Athens, Greece
Antonios is a senior software engineer specializing in front-end, WordPress, Blockchain technology, PHP, and JavaScript frameworks with more than six years of professional experience spanning from the IT sector to digital advertising. He is passionate about applying top-end solutions and software engineering patterns in order to solve complex problems. Read more
Ryan Jurgensen
Portland, OR, United States
Ryan is a full-stack developer with eight years of experience who enjoys working on new, challenging projects. He has recently contributed to key projects for Google (Gmail, Wallet, City Experts) and the US Navy as well as a few startups. He has proven ability to architect and lead large projects or join existing teams with equal ease, and his passion has molded him into a capable generalist with the perfect skill set for any development project. Read more
Emilio Almansi
Buenos Aires, Argentina
Emilio has a broad skill set ranging from full-stack development and distributed computing to blockchain technologies. He has had extensive experience with the Java and Node.js ecosystems as an intern at Google and the Max Planck Institute for Informatics, as well as working remotely with a big data startup in Berlin. He has strong analytical skills and takes great care in communicating with clients to find the right solution for their needs. Read more
Máté Solymosi
Zug, Switzerland
Máté is a full-stack software engineer with 7+ years of experience working on web applications of all sizes, from small greenfield projects to complex legacy systems. He is extremely organized, communicates very well, and prides himself in writing clean, future-proof code with a low tolerance for technical debt. Máté's formal education is in accounting, banking, and finance; therefore, he has extensive domain knowledge in these fields as well. Read more
Charles Lee
New York, NY, United States
Charles is an application and database developer with more than 5 years of experience. He has been the database owner of multiple products—including an automation tool used extensively in asset management at JPMorgan Chase and a bank deposits pricing tool with 20+ clients and more than $1 billion under analysis. Read more

See 3 typical Blockchain jobs you’ll have access to at Toptal:

Top clients, ranging from industry-leaders to rapidly growing start-ups, use Toptal to hire elite blockchain developers for their mission-critical jobs.
  • Enterprise Blockchain Developer
    Blockchain, Java, Hyperledger, R3 Corda
    We are a Fortune 1000 business transforming a critical part of our system to become powered by blockchain technology. We are hiring multiple engineers who are familiar with blockchain and related technologies to work within our teams. The project is cross-functional and will take our business to the next level on a global scale.
  • Blockchain Engineer
    Blockchain, Distributed Systems, Python, C++, Security Skills
    We are a medium-sized business in the logistics space looking to utilize blockchain to optimize parts of our process and better integrate our services with our users and customers. We are looking for an engineer who is experienced with blockchain to assess our needs, propose a solution, and implement it with the approach of their choosing.
  • Solidity Developer
    Solidity, Ethereum, Smart Contracts
    We are an early stage startup looking to raise funds via an ICO. We are looking for a developer who is very experienced in building smart contracts to help us launch and sell our token. We need a developer who has a security-oriented mindset and can implement stable, secure and optimized code for the smart contract. Experience with Solidity and Ethereum is a must have.

Enjoy competitive, worry-free compensation.

At Toptal, you set your own rates and never have to spend time marketing yourself, billing clients, etc. Most Toptalers make substantially more through Toptal than they did at their previous jobs, and we’ll always pay you on time, even if clients have not yet paid us. Never worry about payments again.
  • Trusted by:

Design your own lifestyle.

At Toptal, you can choose your own schedule and work from anywhere in the world that has Internet. Whether you want to spend more time at home with your family or start traveling and work from exotic beaches, the choice is completely up to you. No offices, no mandatory hours, just complete freedom to work in the way that suits you best.

Join tech conferences, advanced skill development sessions, and more.

At Toptal, you’ll always have plenty of opportunities available to grow personally and professionally. From working with cutting-edge technologies to getting real-time feedback from a global community of top engineers, there are always options for creating value for yourself here.
24
Apr
Warsaw
Poland

Interested in Blockchain and IoT development? Come get hands-on experience at the third event of Toptal’s Blockchain IoT workshop series, April 24th in Warsaw.

You’ll be working with other developers on an open source project: creating smart contracts to manage machines, and prototypes of high quality, as well as open source embedded IoT devices to connect to machines’ control units.

The demand for developers with blockchain skills is booming, so please invite anyone with relevant skills who may be interested in learning more about Toptal!

This event is open to all current and prospective Toptalers, hardware and software engineers, product designers, entrepreneurs, champion racers, and regular riders who will cooperate remotely and on-site, to deliver performant, open solutions.

The event begins at 6:30 PM at Campus Warsaw. If you are in the area earlier, please join a Toptal Coworking Day at the same venue.

For more information, please see the event website or contact the host, Michal Mikolajczyk.

24
Apr
Bangkok
Thailand

Join Toptalers around the world as we gather for #GlobalCoworkingWeek 2018!

All are welcome at The Hive Prakanong between 10:00AM and 5:00PM. If you happen to be in the area, stop by and get to know your colleagues.

If you are interested in updating your professional headshot, wear business-casual clothing. Attendees are encouraged to take headshots for one another, using Toptal’s portrait guide.

This event is open to all current and prospective Toptalers. It’s a perfect opportunity to invite contacts who may be interested in learning more about Toptal.

Please RSVP on this page to give us an accurate headcount. For any questions, please contact the organizer directly.

24
Apr
Warsaw
Poland

Join Toptalers around the world as we gather for #GlobalCoworkingWeek 2018!

All are welcome at Campus between 10:00AM and 6:00PM. If you happen to be in the area, stop by and get to know your colleagues — including Tomasz Jonasz Kujawski, a Toptal designer.

Afterward, you are welcome to join the Blockchain IoT Workshop taking place at the same venue.

If you are interested in updating your professional headshot, wear business-casual clothing. Attendees are encouraged to take headshots for one another, using Toptal’s portrait guide.

This event is open to all current and prospective Toptalers. It’s a perfect opportunity to invite contacts who may be interested in learning more about Toptal.

Please RSVP on this page to give us an accurate headcount. For any questions, please contact the organizer directly.

24
Apr
London
United Kingdom

Join Toptalers around the world as we gather for #GlobalCoworkingWeek 2018!

All are welcome at 100 Wardour Street (HAUS) between 10:00AM and 4:00PM. If you happen to be in the area, stop by and get to know your colleagues — including Merott Movahedi, Toptal developer and Community Leader for London.

A photographer will be there from 2:30 - 3:30 to take professional headshots. If you are interested in updating your professional headshot, wear business-casual clothing.

This event is open to all current and prospective Toptalers. It’s a perfect opportunity to invite contacts who may be interested in learning more about Toptal. Thanks to Haus for hosting us.

Please RSVP on this page to give us an accurate headcount. For any questions, please contact the organizer directly.

Publish technical papers alongside blockchain developers on the Toptal Engineering Blog.

The Toptal Engineering Blog features hundreds of thousands of subscribers, daily in-depth technical studies, and frequent syndication requests from leading publications across the tech industry. By joining, you’ll be able to publish on the Toptal Engineering Blog and show your top work off to a global audience of blockchain developers.
Radek Ostrowski
Freelance Ethereum Developer
Time-locked Wallets: An Introduction to Ethereum Smart Contracts
Launch yourself into Ethereum smart contract development with the Truffle framework! In this tutorial, Toptal Freelance Ethereum Developer Radek Ostrowski shows you how to create a practical ĐApp in the Solidity language, complete with its own ERC20 token.
Michal Mikolajczyk
Freelance Ethereum Developer
Blockchain, IoT, and the Future of Transportation: Understanding the Motoro Coin
Open-source, IoT, and Ethereum smart contracts work together with a new utility coin to make transportation more accessible and reduce vehicle waste. In this article, Toptal Freelance Ethereum Developer Michał Mikolajczyk explains the motivations and methodology behind his startup's latest initiative.

Why do top Blockchain experts join Toptal?

Radek Ostrowski
Blockchain Consultant
Sydney, Australia
Radek is a blockchain engineer particularly interested in Ethereum and smart contracts. In the fiat world, he is experienced in big data and machine learning projects. He is a triple winner in two different international IBM Apache Spark competitions, co-creator of PlayStation 4's back-end, a successful hackathon competitor, and a frequent speaker at conferences in Australia, Poland, and Serbia.
Blockchain is one of the most exciting spaces to be working in right now. Finding exciting projects, however, is challenging as it is an emerging technology and the opportunities are limited. Thanks to Toptal, I don’t have to worry about finding projects, and can focus on consulting and software development for various international clients from the comfort of my home.
Dan Napierski
Principal Software Engineer
Boston, Massachusetts
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. Dan specializes in bringing rigorous testing and bulletproof code to complex engineering challenges. He has broad expertise in many aspects of artificial intelligence, blockchain, machine learning, and automation.
Right now we are experiencing tremendous growth in interest in blockchain, cryptocurrencies, and new financial technologies. Through Toptal I gain access to clients looking not only to enter these fields but break new ground using the latest tools and methods. Being a part of the Toptal community has rewarded me with engagements that match my skills and expertise.
Ivan Voras
Senior Blockchain Engineer
Zagreb, Croatia
Ivan is primarily a back-end developer with 15+ years of experience in architecting and implementing server-side solutions, including distributed platforms such as Bitcoin and other blockchains, chat servers, and game back-ends. He has handled DBA operations, developed modules for PostgreSQL, operating system kernel modules (FreeBSD), and new algorithms. He has recently branched into hardware design for IoT devices.
Blockchain technologies are currently in high demand and Toptal provides the perfect opportunity to find quality clients who have the need and the vision to build something truly great. The projects and their requirements are diverse, and the Toptal platform gives me the opportunity to stay on the bleeding edge of technology and advance in both software and hardware development skills.

By joining Toptal, you’ll have full flexibility over which projects you choose and when you want to work.

Aside from enjoying the benefits of our amazing community, you’ll have full flexibility to accept or reject projects as you prefer. Whether you prefer to work full-time at Toptal or you’d rather just take on occasional hourly jobs, the choice is yours.