Hire the Best Solidity Freelancers
in Ukraine

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
4.5/5
of Upwork by G2 peer reviewers
Oleksandr D.

Veliatyn, Ukraine

$30/hr
5.0
6 jobs

👨‍💻4yrs+ Experience A smart contract developer with over 4 years of experience building DeFi and blockchain infrastructure on EVM networks. I specialize in smart contract architecture, protocol integration, and security-focused development. I have experience working with Uniswap V3/V4, account abstraction, staking protocols, and upgradeable contract patterns. I am passionate about building scalable decentralized financial infrastructure.

  • Solidity
  • Blockchain
  • Blockchain Development
  • Ethereum
  • Smart Contract
  • Web3
  • DeFi
  • Layer 2 Blockchain
  • Crypto Exchange Platform
  • NFT Marketplace
  • Decentralized Exchange
  • DApps
  • Blockchain, NFT & Cryptocurrency
  • Cryptocurrency Forking
  • Crypto Asset
  • AI App Development
  • Claude
  • Uniswap
  • Smart Contract Development
Viacheslav I.

Kyiv, Ukraine

$35/hr
5.0
3 jobs

We are a Blockchain & Web3 development team delivering full-cycle solutions - from idea to mainnet launch Our core focus is building scalable, secure, and production-ready Web3 products using modern tech stack and proven architecture. 🔧 Our Tech Stack Blockchain: Solidity, EVM (Ethereum, Arbitrum, BNB Chain, Polygon, Avalanche), Smart Contracts, Web3 integrations Frontend: React.js, Next.js, Web3.js, Ethers.js, Wagmi, WalletConnect Backend: Node.js, Express.js, NestJS, REST APIs, WebSockets Mobile: React Native (Web3 wallets, mobile dApps) Infrastructure: Docker, AWS, CI/CD, Hardhat, Foundry 💼 What We Build Smart Contracts (ERC20, ERC721, ERC1155) Token Development & TGE Launch DeFi Platforms (staking, lending, yield farming) DApps (full-stack Web3 applications) Launchpads & IDO Platforms Crypto Payment Integrations (on/off-ramp, wallets) Custom Web3 Dashboards & Admin Panels (реально відображає ваші кейси типу токенів, TGE, launchpad ) ⚙️ How We Work End-to-end development (Smart Contracts + Frontend + Backend) Clean, maintainable and scalable architecture Security-first approach (testing, audits, best practices) Fast delivery with clear milestones 🧠 Why Clients Choose Us Strong expertise in Web3 / Blockchain / DeFi Experience with tokens, staking, launchpads, and complex dApps Deep understanding of product + business logic, not just code Dedicated team (Blockchain + Frontend + Backend + PM) 📩 Let’s Build Your Web3 Product If you are looking to build a token, DeFi platform, dApp or full Web3 ecosystem - we can help you deliver it fast and right.

  • Solidity
  • Blockchain
  • Blockchain Architecture
  • Blockchain Development
  • Ethereum
  • Smart Contract
  • Node.js
  • web3.js
  • Cryptocurrency
  • JavaScript
  • Web3
  • React
  • TypeScript
  • CSS
  • SQL
  • PHP
  • WordPress
  • Python
  • Angular
  • Rust
George B.

Kharkiv, Ukraine

$78/hr
5.0
5 jobs

Summary: A highly motivated Blockchain Engineer with a robust blend of theoretical knowledge and hands-on development expertise. With a proven track record in mastering and implementing cutting-edge technologies, I pride myself on ensuring client satisfaction and fostering long-term relationships. My experience spans across various blockchain platforms and back-end technologies, making me a versatile asset in the ever-evolving tech landscape. Education: KHARKIV POLYTECHNICAL INSTITUTE Master’s degree in Software Engineering SEP 2009 - JUN 2014 Doctor of Philosophy - PhD, Computer ScienceDoctor of Philosophy - PhD, Computer Science SEP 2019 - MAR 2024 Languages: Ukrainian: Native Speaker Russian: Native Speaker English: Upper-Intermediate Technical Proficiency: Blockchain Technologies: Ethereum, Solana, Solidity, Rust, Hadhat, NodeJS, Web3JS, VueJS, and more. Back-end Technologies: Firebase, Kafka, Go base, Confluent-kafka, Akka, Cassandra, and more. Database Management: PostgreSQL, MongoDB, MySQL, Redis. Tools & Platforms: Vs Code, IntelliJ IDEA, WebStorm, Atom, Jenkins, Docker, Git, SVN, Jira, Trello. Projects: ChromaWay: Blockchain technology company focused on relational blockchain architecture. Roci.fi: A DeFi primitive for permissionless under-collateralized lending on Ethereum. Highvibe Network: Blockchain-based ecosystem for immersive experiences and multidimensional learning. BigTaurus: Crypto and Forex training platform with Token BGT CLUB. Korporatio: Merging International Business Company (IBC) and Decentralized Autonomous Organisation (DAO) to form Smart Companies.

  • Solidity
  • Ethereum
  • Smart Contract
  • Hardhat
  • Ethers.js
  • Web3
  • Rust
  • Solana
  • Stellar
  • TypeScript
  • Node.js
  • Polkadot
  • Ink
  • Uniswap
  • Chainlink
Nazarii K.

Lviv, Ukraine

$40/hr
4.9
5 jobs

Fullstack Web3 developer with experience in creating different types of dApps. My goal is to build the best web3 applications using the latest technologies. I have a good understanding of EVM blockchains and know how to solve any type of web3 challenge. I intend to explore new technologies and deliver value to people.

  • Blockchain
  • Blockchain Development
  • React
  • JavaScript
  • Three.js
  • Next.js
  • Node.js
  • TypeScript
  • MongoDB
  • Bootstrap
  • ExpressJS
  • PostgreSQL
  • Redux
  • web3.js
  • Web3

How it works

Post a job for freePost a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

How do I hire a Solidity Freelancer in Ukraine on Upwork?

You can hire a Solidity Freelancer in Ukraine on Upwork in four simple steps:

  • Create a job post tailored to your Solidity Freelancer project scope. We'll walk you through the process step by step.
  • Browse top Solidity Freelancer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top Solidity Freelancer profiles and interview.
  • Hire the right Solidity Freelancer for your project from Upwork, the world's largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a Solidity Freelancer?

Rates charged by Solidity Freelancers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a Solidity Freelancer in Ukraine on Upwork?

As the world's work marketplace, we connect highly-skilled freelance Solidity Freelancers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Solidity Freelancer team you need to succeed.

Can I hire a Solidity Freelancer in Ukraine within 24 hours on Upwork?

Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Solidity Freelancer proposals within 24 hours of posting a job description.