Vidor has strong business English and years of remote-working experience. The screening process is designed to evaluate your skills and give you a sense of the freelance blockchain developer work we do with our clients. By screening every candidate and vetting every client, we ensure that Toptal maintains top-tier professionals in the network.

They are looking for a senior JS developer to join their SE Asian team building a Blockchain platform and help them build new features and applications for their enterprise clients. They are looking for a senior backend developer to join their SE Asian team building a Blockchain platform and help them build new features and applications for their enterprise clients. The project is with a financial service firm that owns a SaaS platform for Flash loans for traders. Engineer to help them in deploying complex smart contract systems in Ethereum mainnet. I am looking for an experienced freelancer to explore a specific aspect of blockchain technology with me – proof of work. I have clear goals in mind and am seeking someone with intermediate knowledge of blockchain technology.

Dedicated blockchain developer platforms

You know they should be able to tell which solutions to use in a specific business context. He has handled DBA operations, developed modules for PostgreSQL, and has experience developing firmware for IoT devices. He helped establish the Toptal blockchain specialization, served as a tech screener, and lectured for Toptal Academy. Vidor is a Computer Science Ph.D. candidate actively doing research and development in the blockchain space with a focus on Tendermint, Ethereum, and Hyperledger.

  • I’m looking for someone who can handle the full scope of this project – from design to coding and administration.
  • We’re an early stage startup looking to raise funds via an ICO.
  • Serkan is a seasoned software engineer with 14 years of experience in consultancy and in-house development.
  • Freelancers are charged 10% in platform fees for each Job or Gig they complete.

Previously, he worked as a consultant for different companies and projects for 6+ years. As a software consultant, he led development teams of up to ten developers and worked on employee relations, learning management, and eCommerce applications. Blockchain Developers use their thorough knowledge of the Blockchain technology to develop smart contracts and web applications.

Senior Product Designer

Hire professionals with a wide range of skills, or offer your own in-demand expertise. This website is using a security service to protect itself from online attacks. The action you just performed triggered the security solution. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data.

A white paper is a hybrid document that tries to sell technical aspects of a project in a way that can be understood by the average reader. The proof-of-work system is one in which the sender of a message (or the creator of a kind of transaction) needs to perform hard work to sign the operation. But the process of verification of this work is easy and fast, so that everyone can do it in a very short period. Total’s screening and matching process ensures exceptional talent are matched to your precise needs. The rate that you set is the rate that you will receive for every engagement with a client.

What is the no-risk trial period for Toptal blockchain developers?

Also, in cases where a piece of data needs to be pushed into the blockchain, a DApp developer needs to know how to achieve that. Toptal offers a no-compromise solution to businesses undergoing rapid development and scale. Every engineer we’ve contracted through Toptal has quickly integrated into our team and held their work to the highest standard of quality while maintaining blazing development speed. Toptal makes connecting with superior developers and programmers very easy.

freelance blockchain developer

We’ve compiled information on the average blockchain developer salaries and rates across different hiring platforms. Please note that in-house developer salaries on Glassdoor may not include bonuses and non-financial benefits. YouTeam’s commission is up to 10% of the engineer’s hourly rate, while on Upwork, you’ll pay a flat 5% fee for fixed-price and hourly jobs. As a result, hiring a skilled and experienced developer can be similar to finding a needle in a haystack.

Blockchain Engineer Madison, NY (This position can become remote work after 1 months on Site)

David is a senior software engineering generalist with blockchain and security experience. With two years of management training and strong communication skills, he excels at bridging business requirements with modern technology. David’s current passion is building on his experience as a leader to maximize team effectiveness through industry best practices. I’m looking for a proficient developer with experience in blockchain development and Kotlin Android programming to create a website.

freelance blockchain developer

When a block is transmitted, each node that receives it can decide to append this block onto its most extended chain. (This is the default behavior in bitcoin, which guarantees that we can achieve consensus.) Then the node can start mining a new block linking to this latest addition as its previous block. We can say that a transaction is accepted when a specific number of nodes have added this block onto their chains. They paired us with the perfect developer for our application and made the process very easy. It was also easy to extend beyond the initial time frame, and we were able to keep the same contractor throughout our project. We definitely recommend Toptal for finding high quality talent quickly and seamlessly.

Web Developers

It is a difficult computer science problem without a general solution, having been solved only for specific use cases, like bitcoin. When we create a currency, we need to have a way to know who is the current owner of a coin and also the history of its movement. Bitcoin is a digital, distributed ledger where everyone can verify all coin operations. You also know that you’ll need to get more specific than that if you’re going to hire someone who’s right for your project. We needed some short-term work in Scala, and Toptal found us a great developer within 24 hours. This simply would not have been possible via any other platform.

freelance blockchain developer

Feature to add onto my existing Kotlin mobile application utilizing blockchain. Upon successful completion, we will work on other major projects as well. Companies can hire remote contractors with experience in blockchain technology on YouTeam. Janko is a software engineer and architect specializing in blockchain and focusing on decentralized finance and self-sovereign identity (SSI).

Featured Toptal Blockchain Publications

We need an engineer with blockchain experience to assess our needs, propose a solution, and implement it with the approach of their choosing. You would be responsible for extending MVP smart contracts and testing them. You would be responsible to fork from existing contracts (eg Aave lending pool) and supporting the design process. You will be implementing periphery/factory contracts and dealing with unit testing, and stubs. Crypto Gaming United (CGU) fits neatly into’s suite of blockchain-based products and services, with both sides bringing network effect, liquidity, utility and users to the other.