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Currently available Blockchain Developers

Patrick C.
Senior Blockchain Engineer & Development Lead Patrick C. Germany 8 years

Patrick is a senior blockchain developer who has been working with blockchain technologies for about 5 years. He has worked both with a startups as well as big, state institutions. He is focused on Ethereum, Smart Contracts, Solidity, also he Show more

  • #Ethereum
  • #Solidity
  • #Python
Ivan B.
CTO / Blockchain Solution Architect / Technical Manager Ivan B. Poland 10 years

Not only I develop blockchain projects, but I also fill them with the sense and value. ~ I’m a tech guy with 10+ years of experience in commercial development. Have been working in the blockchain/fintech industry for already Show more

  • #Big Data
  • #Linux
  • #Pre-sales
Margaryta K.
Blockchain Developer - Master@IBM Margaryta K. Germany 3 years

I am a software developer passionate about Blockchain and Self Sovereign Identity Show more

  • #AngularJS
  • #Node.js
Lucas J.
Javascript full-stack developer (React, Node.js) Lucas J. Toronto 5 years

Lucas Jin is a passionate software engineer. He has 8 years of professional experience in software industry. He has clear logic and ability to design project architecture, he is a fast-learner and doesn't afraid the new technologies. Show more

  • #React.js
  • #Node.js
  • #MongoDB
Ji J.
Senior Blockchain developer Ji J. Hong Kong, SAR 5 years

I have been working as a web developer for 10 years. I am a full-stack web software engineer .I'm a professional who is easy to talk to and easy to work with. Sometimes I make jokes and Show more

  • #Laravel
  • #PHP
  • #MySQL
Lukas S.
Senior Java Developer with Blockchain expertise Lukas S. Prague, Czech Republic 8 years

My 𝗹𝗶𝗳𝗲 𝗽𝘂𝗿𝗽𝗼𝘀𝗲 is to explore 𝗻𝗲𝘄 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 and deliver IT to people like 𝘆𝗼𝘂! What I like to build 🔨 - high throughput bigdata applications - audio software (VSTi, DAW) - machine learning software (dynamic timewarp, neural networks) - hardware prototypes (sensors, internet of things, motion sensors, X86 / ARM) - Show more

  • #Java
  • #SOA
  • #Python
Kevin J.
Senior Blockchain Engineer with Solidity, React, Next.js Kevin J. Singapur 5 years

Blockchain engineer specialized in custom cryptocurrency and blockchain-based Enterprise solutions. I have extensive experience in ICO's, STO's, Customising Consensus(POS/POW), Crypto exchange, Wallets, and crypto-bot design, DApps, blockchain websites, web portals, & smart Show more

  • #PHP
  • #Solidity
  • #Python

Blockchain Development trends in 2026 to consider

How much does it cost to hire a blockchain developer? It depends mostly on where the developer lives, how senior they are and what kind of blockchain work you need. A senior freelance blockchain developer typically charges $65-$150 per hour in the United States, $50-$95 in Eastern Europe, $45-$90 in Latin America and $35-$75 in South Asia.

View hiring guide

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Useful articles

Why Should You Hire Freelancers On EliteBrains?

Why Should You Hire Freelancers On EliteBrains?

So, what’s the best way to choose the best freelancers for your web or app development project? The answer is to use a platform, such as EliteBrains, that offers skilled, hand-selected, and fully-screened freelancers. More

08. 02. 2021 . 12 min read

How it works

Four steps that take you from an open role to a paid blockchain developer.

  1. Step 1

    Tell us who you need

    Share the role, tech stack, seniority, location, budget and availability. It takes about 5 minutes and becomes the brief for AI sourcing.

    EliteBrains requirements form for a new developer search
  2. Step 2

    AI sourcing

    Our AI searches the web for blockchain developers who match your criteria and delivers up to 50 relevant candidates. Every candidate comes with a match score and the place we found them.

    Pick the ones you like and we help you get the conversation started.

    $99 per 50 candidates

    AI sourcing results with matching developer candidates
  3. Step 3

    AI skills assessment

    Send a test to the candidates you like. They solve real blockchain tasks and our AI evaluates correctness, code quality and approach, so you only interview people who can do the work.

    $14.90 per candidate

    AI skills assessment with a coding task
  4. Step 4

    Contracts, timesheets and payments

    Sign the contract, track hours, approve invoices and pay your developer in their country, all in one place. EliteBrains acts as Contractor of Record and takes on compliance. No commission on the developer's rate.

    $199 per contract / month

    or $29 per contract / month if you contract the developer yourself

    EliteBrains contracts dashboard

Pricing

One tool for each step of hiring. Use the ones you need and pay only when you use them. Zero commission on your developer's rate.

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AI Sourcing

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One-time, per search

Describe the role and get up to 50 blockchain developers who match your criteria. We help you start the conversation with the ones you pick.

Start sourcing
2Verify

AI Skills Assessment

$14.90 per candidate

One-time, per candidate tested

Test only the candidates you shortlist. Each one gets an AI-evaluated assessment and you get a clear skills report before the interview.

Assess candidates
3Hire and pay

Contracts & Payments

$199 per contract / month

Monthly, while they work for you

EliteBrains acts as Contractor of Record: we sign the contract, take on compliance, handle timesheets and invoices, and pay your developer in their country. No local entity needed.

Hire through EliteBrains

Prefer to be the contracting party yourself? Contracts, timesheets and payments without Contractor of Record cost $29 per contract / month.

Example

Hiring one blockchain developer

No percentage of their rate, no placement fee.

AI Sourcing - 50 candidates
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EliteBrains vs Toptal vs Upwork

Find, verify and pay blockchain developers without giving away a cut of their rate.

EliteBrains Best value Toptal Upwork
Fee on the developer's rate 0% - no commission Markup built into the hourly rate, reportedly 30-50% Around 15% in total: a 5% client fee on every payment plus a freelancer fee of up to 15% (typically ~10%) priced into the rate
Other fees Pay only for the tools you use $79 monthly subscription and a $500 refundable deposit $0.99-$14.99 for every new contract
Finding candidates AI sourcing: 50 matching candidates for $99, you choose Toptal matches you from its own network You post a job and review proposals
Skills verification AI skills assessment of your own shortlist, $14.90 per candidate Toptal's own screening before matching Up to you
Contracts, compliance and payments EliteBrains as Contractor of Record, $199 per contract / month Billed through Toptal at its blended rate Payments through Upwork, fees above apply
Rate transparency You see and agree the developer's real rate No public rate card, one blended price Freelancer sets the rate, platform fees on both sides

Competitor fees from their public pricing pages and 2026 buyer reports, checked October 2026. Toptal does not publish its markup.


Blockchain Development trends in 2026 to consider

Blockchain developer hourly rates by region (2026)

How much does it cost to hire a blockchain developer? It depends mostly on where the developer lives, how senior they are and what kind of blockchain work you need. A senior freelance blockchain developer typically charges $65-$150 per hour in the United States, $50-$95 in Eastern Europe, $45-$90 in Latin America and $35-$75 in South Asia.

With EliteBrains you pay the developer's own rate. No markup, no commission on top.

Typical freelance blockchain developer rates in USD per hour
Region Mid-level (3-5 yrs) Senior (5+ yrs)
United States$60 - $110$65 - $150
Western Europe$50 - $90$55 - $120
Eastern Europe$40 - $70$50 - $95
Latin America$35 - $65$45 - $90
South Asia$25 - $50$35 - $75
Southeast Asia$25 - $50$35 - $80

Blockchain developer rates by type of work (2026)

The kind of work matters as much as the country. Security auditors and developers who build blockchains themselves are the most expensive. Developers who connect a website or app to the blockchain are usually the cheapest.

Typical senior (5+ yrs) freelance rates by type of blockchain work, USD per hour (estimates)
Type of work United States Eastern Europe Latin America South Asia
Web3 full-stack (React + wallets)$60 - $130$45 - $85$40 - $80$30 - $65
Smart contract developer (Solidity, Rust)$65 - $150$50 - $95$45 - $90$35 - $75
Enterprise blockchain (Hyperledger, Corda)$70 - $140$50 - $90$45 - $85$35 - $70
Core protocol developer (Go, Rust, C++)$90 - $180$60 - $120$55 - $110$45 - $95
Smart contract auditor$100 - $250$70 - $150$65 - $140$50 - $120

Key facts

  • A senior blockchain developer in Eastern Europe or Latin America costs roughly half of a US rate in 2026.
  • Latin America shares most of the working day with US time zones, at $45-$90 per hour for senior developers.
  • Smart contract auditors and core protocol developers are the most expensive. Top experts charge $100-$250 per hour or more.
  • Marketplaces add 15-50% on top of these rates. With EliteBrains the commission is 0%.

Methodology: rates by region are compiled from published 2026 rate benchmarks (Lemon.io Solidity contract rates, Arc.dev, Second Talent and others), rounded to the nearest $5. Rates by type of work are EliteBrains estimates based on the same sources, because few benchmarks split blockchain rates by role. Rates vary by blockchain, seniority and project. Last updated October 2026.

Want to use these numbers in your article? Feel free, just mention EliteBrains and link to this page.

Which blockchain developer do you need?

"Blockchain developer" can mean very different jobs. Start with what you are building, then look for the matching skills.

Pick the blockchain developer for your project
You are building Hire Skills to ask for
A token, NFT collection or DeFi app on Ethereum or a layer 2Smart contract developerSolidity, Foundry or Hardhat, OpenZeppelin, security
An app on SolanaSolana developerRust, Anchor
The website or app where people connect a walletWeb3 full-stack developerReact or Next.js, ethers.js or viem, wallets, JavaScript
A private blockchain for a companyEnterprise blockchain developerHyperledger Fabric, Corda, Java or Go
Your own chain or layer 2Core protocol developer, often a senior backend developerGo, Rust, C++, cryptography, networking
A check before launchSmart contract auditorSecurity reviews, testing, known attack types

Blockchain development trends

We’re at the turning point of a new era. Blockchain will change everything, and these are the development trends you can’t ignore when considering building blockchain applications in 2026. Blockchain has given us a peek at the future. And it’s looking even brighter than we expected. But it’s difficult to keep track of the constant changes and updates across the various Blockchain protocols viewed as important. 

In 2021, Outlier Ventures (a venture firm invested in supporting the development and growth of emerging technologies), published a study on the state of Blockchain protocols. They indexed 6163 code repositories and analyzed over a million commits across 186 GitHub organizations. 

The research report contains a number of metrics which can be used to better understand how blockchain technology is being used, and how developers are utilizing the technology. The result will hopefully provide some unbiased insight into the trends and direction of blockchain development. The figures below are from that 2021 report; current numbers follow after them.

Here's a rundown of some of the key findings from the Outlier Ventures report (2021):

The Top 5 Blockchain protocols by development activity

  • Ethereum, the protocol with the most developer activity, has made 42457 commits to date. Cardano (37327), Bitcoin (21614), and Polkadot (18879) follow suit, each within striking distance of Ethereum. Cosmos (17854) rounds out the top 5.
  • It is noteworthy to mention that,  according to the study, there are on average 220 monthly active core developers working on Ethereum blockchain, followed by 149 on Hyperledger, 144 on Cardano, 103 for Bitcoin, and 92 on Filecoin.

Multi-chain protocols

  • There are many multi-chain protocols on the market, providing solutions to issues of blockchain interoperability. Two of the most notable multi-chain protocols are Polkadot (2x)  and Cosmos (60% increase), in core development contributions by their community of developers over the last year. 
  • Over the same time period, rival protocol Avalanche also saw significant growth - increasing its weekly commits and monthly active developers by 4x to match half of the previous 2 years' activity.

Decentralized storage protocols

  • Filecoin and Siacoin saw an influx of both core development, contributions from developers, and product adoption.

Ethereum killers

  • Core metrics for several key Ethereum killers Tron, EOS, Komodo, and Qtum dropped in commits by 50% or more.

Permissioned blockchains

  • In the course of the year, Permissioned blockchains didn't see much growth in development activity. Hyperledger saw a steep decline in contributions despite a good start to the year. Despite the fact that there was an increase in commits in the first half of 2020, Corda, just like Hyperledger, lagged behind the overall blockchain developer activity.

Blockchain developers in 2026: the numbers

  • Ethereum has the most developers: 31,869 active developers and 16,181 new ones in the first nine months of 2025.
  • Solana is second with 17,708 active developers and 11,534 new ones. Bitcoin added 7,494 new developers.
  • Most new developers build on Ethereum’s layer 2 networks, not on Ethereum itself.

Source: Electric Capital 2025 Developer Report, as shared by the Ethereum Foundation (October 2025).

So far, we can't tell (we can only guess) which of the protocols will become more popular by the end of 2026, but there is little question about one thing: blockchain development is on the rise and moving forward. 

To that end, we would like to discuss some of the trends that shape blockchain development in 2026.

Looking for blockchain developers for your startup? EliteBrains AI sourcing finds up to 50 matching candidates for $99, and you can test the ones you like before you hire. See the blockchain developer rates at the top of this page.

What is blockchain technology?

Blockchain Technology

Blockchain is a digital ledger technology that stores transactional records and associated data in blocks. Each block contains a timestamp and a link to a previous block. Read more about how blockchain works.

You may recall that the ancient Egyptians had something like this: they used a kind of "ledger" called a papyrus roll to record events that happened, and then re-used the rolls again to record new events. That gave them a permanent historical memory.

The Blockchain takes this a step further by making a historical record that everyone agrees on, and by making it possible for everyone to do something with it – like make smart contracts – without placing the burden of trust on a single entity or individual. In other words, the blockchain is a decentralized network that exists over peer-to-peer networks with no central authority or third party overseeing transactions.

The bitcoin currency is the first widespread use of the technology, but many people in the blockchain community see it as a platform for many kinds of decentralized systems, including file storage and even user-to-user messaging and e-commerce.

Bitcoin's blockchain is one decentralized ledger made mainly for payments. Newer blockchains added more features. The best known of these is Ethereum, which runs smart contracts on its blockchain. 

What is a smart contract?

Computer scientist and cryptographer Nick Szabo first used the term “smart contract” in 1994, referring to "a set of promises, specified in digital form, including protocols within which the parties perform on these promises".

When run on the blockchain a smart contract becomes like a self-operating computer program that automatically executes when specific conditions are met. Because smart contracts run on the blockchain, they run exactly as programmed without any possibility of censorship, downtime, fraud, or third-party interference.

Smart contracts remove the need for a "middle man" by hosting the code on a blockchain. Smart contracts can be used to create applications that allow for the direct exchange of money and content between individuals in a transparent way without any third-party intermediary.

The Ethereum Project, led by Vitalik Buterin, formalized these concepts for the first time in 2014 within a general-purpose programming language for building decentralized applications.

Blockchain protocols - What are they?

The word "protocol" may bring to mind images of stuffy academics debating over arcane details, but in the case of blockchains, it's a very significant term with a very specific definition.

A protocol sets forth a set of rules for the computers on a network to follow. These rules dictate how computers send data to each other, make sure that data is secure, and agree upon how multiple nodes will interact with each other on the network.

From a business perspective, the most important thing about blockchains is that they provide a platform for decentralized applications (dApps). Blockchain protocols are open-source, meaning anyone can see the code and suggest changes. As data is entered into the blockchain, it is grouped with other data so it cannot be edited or deleted.

Why is this important? The blockchain protocol determines what kinds of applications can be built on top of it.

There are hundreds of blockchain protocols, and we will here take a brief look at the most popular ones. 

Multi-chain protocols 

A multi-chain refers to a blockchain project that is deployed independently in another chain rather than the original chain. For example, say a project was launched on Ethereum, that has its own token and smart contracts, it can be deployed as a multi-chain on another chain such as BNB Smart Chain (formerly Binance Smart Chain, BSC).

A multi-chain is a blockchain that can provide users with multiple different access routes to the same smart contract. A protocol does not have to be a part of the original blockchain to become a multi-chain. It just has to have its own protocol as well as smart contracts and dApps.

A flurry of multi-chain protocols is propelling development forward. With the ability to tap into the same decentralized applications and tokens, each protocol is adding its own spin on how it will make blockchain useful.

So far, the number of core developers, as well as developer contributions, is on the rise across multi-chain technologies such as Polkadot, Cosmos, and Avalanche.

Polkadot

Polkadot, the next-generation base-layer protocol that facilitates interoperability among blockchain technology, has doubled its mark in its short period of existence.

This is a multi-chain protocol that provides cross-chain connectivity between different chains. It does this by allowing users to create and run their own blockchain, called parachains, that are linked to the main chain. The Polkadot protocol is decentralized in nature and operates with a Nominated proof-of-stake algorithm.

In essence:

"Polkadot consists of many parachains with potentially differing characteristics. Transactions can be spread out across the chains, allowing many more transactions to be processed in the same period of time."

What is special about polkadot?

Polkadot is a network protocol that supports the transmission of any type of data across blockchains, not only tokens. With Polkadot, applications get the best of both worlds: security from the robustness of the Ethereum ecosystem and performance from a true multi-chain architecture. This indicates that Polkadot is a fully functional multi-chain application environment, where cross-chain registries and cross-chain computations become a reality.

What's more?

Polkadot is built by an open-source community of developers and users. Everyone is welcome to contribute to the code, run a node, or build services on Polkadot. Grants are also available for qualifying parties.

Types of Projects on the Polkadot Network:

Polkadot can be used to develop different types of decentralized applications. Some projects include:

  • Acala - A decentralized financial consortium
  • Moonbeam - a smart contract deployment platform
  • Ternoa - A blockchain designed to transmit NFT-based decentralized data.
  • Shadows - a marketplace that allows users to trade, borrow, and lend derivative assets. 

Cosmos

The goal of this project is to "create an Internet of Blockchains, a network of blockchains able to communicate with each other in a decentralized way." Cosmos is, like Polkadot, a proof-of-stake network.

Cosmos is a new internet at the block level. It’s a network of blockchains that can talk to each other using Inter-Blockchain Communication (IBC), through what we call “Peg Zones". Each blockchain can maintain its own tokens and operate independently.

Since its launch, hundreds of blockchains have been built with Cosmos technology, for example Cronos (from Crypto.com), Osmosis and dYdX. Not every project lasted: Terra (Luna), once one of the biggest Cosmos chains, collapsed in May 2022.

Within the Cosmos network, users can create and run services and applications on their own chain. Cosmos allows users to create their own token, or otherwise connect to other chains.

Avalanche

Avalanche is the third most popular multi-chain in the market, which is used by many projects. The Avalanche blockchain is "the fastest smart contracts platform in the blockchain industry" and in 2021 it supported up to 4,500 transactions per second.

Incentives such as private sales and grants might assist to stimulate developer interest. According to the Avalanche Foundation, 225 projects supported the platform in 2021. They include other blockchain projects like Tether, Chainlink, SushiSwap, Trader Joe, The Graph, Circle, etc.

Ethereum killers:  Making a case for scalability and the environment

After bitcoin, Ethereum is the second-largest cryptocurrency by market value, and it is the base for most smart contract apps. However, the blockchain has had some problems, such as scalability and high transaction fees. Until 2022 it also used a lot of energy, but in The Merge (September 15, 2022) Ethereum moved to proof of stake and cut its energy use by about 99.95%. These problems led to the rise of a wave of rivals known as "Ethereum killers".

Ethereum killers are projects that purport to do everything that Ethereum does but better.

There are many Ethereum killers in the market, but the following have been able to capture a majority of users’ interest:

Cardano

Cardano is a fully open-source decentralized public blockchain and cryptocurrency project founded by Charles Hoskinson, former co-founder of Ethereum. It has taken a research-intensive approach to development, encouraging peer reviews and community participation before projects are implemented. This slowed things down, but Cardano’s smart contracts went live with the Alonzo upgrade in September 2021. It improves on Ethereum by allowing for greater scalability and improved efficiency with limited environmental impact.

BNB Smart Chain (formerly Binance Smart Chain, BSC)

Binance is popularly known as the world’s largest cryptocurrency exchange, but it is also moving into blockchain development. Binance Smart Chain, renamed BNB Smart Chain in 2022, is a separate blockchain that runs the same kind of smart contracts as Ethereum, with lower fees.

As a matter of fact (2021 figures): every second, BSC could handle an average of 55 to 60 transactions which translates to over 3.5 million transactions per day, which is above 1.1 million transactions for Ethereum.

BSC is like Ethereum, but with a different twist. It is similar to Ethereum in that it is a platform for hosting smart contracts and tokens.  The blockchain’s key difference from Ethereum, however, is that project developers can connect with potential investors through the Binance trading platform which is a potent combination.

Solana

Solana is a public blockchain platform that uses proof of stake and proof of history to achieve consensus which makes it more energy-efficient and has better performance characteristics than the “proof of work” algorithm used by Bitcoin (and by Ethereum until 2022).

Solana can execute smart contracts in the same way as Ethereum. However, Solana may accommodate tens of thousands of transactions every second, whereas Ethereum’s main chain handles far fewer and has higher transaction "gas" fees. That is why most everyday Ethereum activity now runs on layer 2 networks. 

Polygon

Polygon is often listed with the Ethereum killers, but it is really a network that helps Ethereum scale. Apps run on Polygon with lower fees and still connect to Ethereum.

Polygon has reinvented itself as the "Ethereum's Internet of Blockchains." At its core, the Polygon platform functions as a software development kit (SDK) or a platform that allows developers to build and launch ready-made blockchain networks making it your quintessential multichain system.

Other Ethereum killers are EOS, Tron, Komodo, and Qtum, albeit seeing a decline in core development metrics.

DeFi protocols  - The blockchain of decentralized finances

DeFi is short for "decentralized finance" and it refers to any kind of decentralized blockchain-based financial network as well as software tools for generating such networks.

DeFi protocols are different from classical financial models in that they rely on open-source, community-driven development and the use of open standards.

DeFi is proving itself as a better alternative to traditional finance in that it is significantly more efficient, has lower transaction rates, and offers a wider investment diversification potential. 

Decentralized finance protocols can enable a variety of online marketplaces that will provide users with the opportunity to trade, sell, and buy items and services the world over. These platforms will be able to handle transactions in both fiat and cryptocurrencies globally, across borders. They will also be able to handle peer-to-peer transactions such as freelancing gigs, digital collectibles such as NFTs (more of this later), or physical items such as apparel, electronics, real estate, and more.

Decentralized finance marketplaces will be able to do all these without the need for a middleman or a middle party, which will be able to change the face of eCommerce as we know it.

How many DeFi protocols are there?

In 2021 there were about 234 DeFi protocols; today there are thousands. The majority are developed on Ethereum. However, there are also protocols developed on EOS (14) and Bitcoin (24). Examples of the most popular DeFi protocols:

  • Aave - Ethereum-based decentralized lending platform.
  • Uniswap - Ethereum-based automated market maker for ERC20 tokens.
  • Yearn - a group of protocols built on the Ethereum blockchain that allows users to optimize their earnings on crypto assets through lending and trading services.
  • Synthetix - provides on-chain exposure to a wide variety of highly liquid synthetic assets (synths).
  • Sushiswap - Like Uniswap, this is another automated market maker where users can buy and sell crypto assets using a collection of liquidity pools to achieve this goal.

NFT projects 

Just a few years ago, the mainstream public was in a frenzy over Bitcoin and cryptocurrencies. It seems that everyone in tech knows what a cryptocurrency is, even if they don't fully understand it. Now we have another new buzzword in town: non-fungible tokens, or NFTs.

NFTs are the Next Frontier of Innovation in Blockchain Technology. Short for Non-Fungible Tokens, NFTs represent unique assets or tokens on a blockchain. With NFTs, anything that can be digitized - gifs, images, recipes, birth certificates, etc. can be put onto a blockchain, creating new opportunities for trading and monetization.

The term "fungible" means that the things we're referring to, i.e. apples and oranges, can be freely substituted for each other and that their difference is insignificant. So, non-fungible tokens are different from that. They can't be substituted or replaced by another token, which makes them unique.

NFTs are created using smart contracts and have a built-in scarcity similar to collectibles and sports cards. They are the first of their kind to bring together aspects of both cryptocurrencies and collectibles. 

What are NFTs used for?

In basic terms, NFTs are used to create digital assets with unique properties, which can be further traded or sold like you would any other asset with the exception that they are unique and virtual in nature. NFTs are used for a number of things, including creating digital assets to represent real-world items such as artworks, collectibles, real estate, and more. Consider these digital tokens as certificates that confer ownership or authenticity.

Well-known NFT projects

These are some of the best-known NFT projects. The NFT market is much smaller today than at its peak in 2021, so treat them as examples, not as investment tips:

  • Cryptopunks
  • Cryptoadz
  • Sneaky vampire syndicate
  • Bored ape Yacht club
  • Cool Cats NFT
  • The cryptoDads
  • Mutant Ape Yacht Club
  • CyberKongz

Skills to look for when you hire a blockchain developer

Blockchain code is hard to change once it is live, and a single bug can lose real money. That is why the skills list is a bit different from a normal web developer:

  • Smart contract languages: Solidity for Ethereum and its layer 2 networks, Rust for Solana. Most projects need one of them in depth, not all of them.
  • Security: knows the common attacks (reentrancy, access control mistakes, price oracle tricks) and writes code that avoids them.
  • Testing: writes tests for every contract with tools like Foundry or Hardhat, including tests that try to break the code.
  • Gas costs: every transaction costs money, so a good developer writes code that is cheap to run.
  • Upgrades: knows how to plan upgrades for contracts that are already live, and when not to make them upgradeable.
  • Front end and wallets: for a full product, someone has to connect the contracts to a website or app with ethers.js or viem and wallets like MetaMask.
  • One or two chains in depth: Ethereum and its layer 2 networks, Solana, BNB Smart Chain or a private chain like Hyperledger Fabric.

For more detail, see our guide to blockchain developer skills.

How to vet a blockchain developer before you hire

A good CV and a nice interview don’t always mean the developer can do the job. In blockchain this matters even more, because mistakes are expensive. The best way to check is to see how they solve a real task. Here is a simple process:

  1. Look at their code. Ask for a GitHub profile or contracts they deployed. Many are public, so you can see them on a block explorer like Etherscan.
  2. Give them a practical task. A short task from your real project tells you more than questions about blockchain theory.
  3. Ask about security. Ask which attacks they protect against and if their code was ever audited.
  4. Check communication. Remote work goes well when the developer writes clear updates and shares some working hours with your team.
  5. Start small. A small first project shows you if they deliver on time before you sign a long contract.

Example tasks to test blockchain developers

  • Security: here is a vault contract that an attacker can drain with a reentrancy attack. Find the bug and fix it.
  • Gas: make this function cheaper to run without changing what it does.
  • Testing: write tests for a token contract, including one that tries to transfer more tokens than the user has.
  • Upgrades: explain how you would fix a bug in a contract that is already live and holds user funds.
  • Oracles: the price feed stops updating. What happens to the app, and how do you protect it?
  • Web3 front end: connect a wallet, show the user’s token balance and send a transaction with a clear error message if it fails.
  • AI code review: here is a contract that was written with AI. Find the two problems and explain them.

Interview questions that show real skill

Questions to ask a blockchain developer and what a good answer shows
Question A good answer shows
What is a reentrancy attack and how do you prevent it?They know the most famous smart contract bug and update balances before sending money.
How do gas fees work, and how do you make a contract cheaper to use?They think about the cost for users, not only about the code.
How do you upgrade a contract that is already live?They know upgrade patterns and the risks they bring.
When would you build on a layer 2 instead of Ethereum itself?They can explain the trade-off between cost, speed and security.
How do you test a smart contract before launch?They write many tests, try to break their own code and plan for an audit.
Which parts of your last project did AI write, and how did you check them?They use AI tools but still understand, test and own the code.

With the EliteBrains AI skills assessment, you can send tasks like these to the candidates you like. Our AI checks their answers and code, so you only interview people who can really do the work. It costs $14.90 per candidate. For more ideas, see our blockchain interview questions. And because more and more code is written by AI, ask candidates to review AI code, not only to write their own.

Where to hire blockchain developers

Hire blockchain developers

In this day and age, where blockchain technology is just finding its feet in mainstream adoption, there are not many people who have developed an app or product on the blockchain, let alone use it.

Hiring a developer with experience in blockchain technology is not an easy feat either as there are not many people who have the requisite skills.

The best way to go about it is to find candidates who match your needs with AI sourcing, then test the ones you like with an AI skills assessment before you hire.

Startups and enterprises alike hire blockchain developers to realize their most ambitious ideas: from security protocols to decentralized exchanges, from supply chain solutions to prediction markets. 

The right developer helps a company reshape the future of its industry - whether it is to create smart contracts with the best security or dApps that solve real-world problems. Agencies and talent marketplaces can find developers fast, but they usually add 15-50% on top of the developer’s rate.

Freelance, contract or dedicated blockchain developers?

Blockchain developers for hire usually work in one of three ways. Which one is best depends on how long you need them and how important the work is for your product.

Three ways to work with a blockchain developer
Freelance Contract Dedicated
How longA few hours or one projectA few months, part-time or full-timeFull-time and long-term, only on your product
Good forA code review, one contract, a small fixBuilding and launching your contracts and appYour main product and its smart contracts
How you payPer hour or per projectMonthly invoiceMonthly, often a fixed amount
Legal riskLowMedium - the contract has to match how you really work togetherHigher - long full-time work can look like employment

Hiring a dedicated blockchain developer in another country is where many companies get stuck. You want someone full-time, but you don’t have a company in their country. With EliteBrains as your Contractor of Record, we sign the contract, take care of the legal side and pay the developer in their country. You don’t need to open a company there. If you want to sign the contract yourself, you can still pay international contractors through EliteBrains and keep contracts, timesheets and invoices in one place.

Looking for a Blockchain developer?

Blockchain development is hard work! With EliteBrains AI tools you find, check and hire blockchain developers yourself. You decide who you hire, and you never pay a commission on the developer’s rate. It works in four simple steps:

  1. Tell us who you need. The blockchain, tech stack, seniority, location, budget and when they should start. It takes about 5 minutes.
  2. Get matching candidates. Our AI sourcing finds up to 50 blockchain developers who fit your needs for $99. Pick the ones you like and we help you start the conversation.
  3. Test the best ones. Send an AI skills assessment for $14.90 per candidate and only interview those who pass.
  4. Sign and pay. EliteBrains acts as Contractor of Record for $199 per contract per month. We handle the contract, legal rules, timesheets, invoices and payments in the developer’s country.

FAQ

It depends mostly on where the developer lives, how senior they are and what kind of blockchain work you need. A senior freelance blockchain developer usually costs $65-$150 per hour in the US, $50-$95 in Eastern Europe, $45-$90 in Latin America and $35-$75 in South Asia. Smart contract auditors often charge more. With EliteBrains you pay the developer’s own rate and only the tools you use. There is no commission on top.

You can use talent marketplaces, agencies, crypto job boards, GitHub or your own network. Marketplaces and agencies are fast, but they add 15-50% to the rate. With EliteBrains AI sourcing, you tell us who you need and get up to 50 matching blockchain developers for $99. Then you contact the ones you like directly.

It depends on the blockchain. Solidity is the language for Ethereum and its layer 2 networks, BNB Smart Chain and other chains that run Ethereum-style smart contracts. Rust is used for Solana and some newer chains. Pick the chain first, then hire for its language.

If your contracts will hold real money, yes. Even good developers miss bugs, and smart contracts are hard to change once they are live. Plan an audit by a separate security team before launch, and budget time to fix what they find.

First look at their code on GitHub or contracts they deployed. Then give them a short real task, for example fixing a reentrancy bug or writing tests for a token contract. The EliteBrains AI skills assessment does this for you and checks the results for $14.90 per candidate.

A freelancer is great for a code review, one contract or a small fix. A dedicated blockchain developer is better when your product depends on its smart contracts and needs ongoing work. If the developer works full-time for you from another country, make sure the contract fits how you really work together, or hire through a Contractor of Record.

No. EliteBrains acts as Contractor of Record for $199 per contract per month. We sign the contract, handle the legal side and pay your developer in their country.

No. EliteBrains is software. You find, test and hire blockchain developers yourself, and you don’t pay any commission on their rate.

Related blockchain articles

Are you looking for a specific skill set?

The EliteBrains network consists of developers whose software development skills are listed below:

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