Winterthur, Zurich, Switzerland
$40/hr · Starting at $25
Experienced blockchain/backend expert with extensive experience in Solidity, smart contracts, Ethereum, Flashbots, C++, Python, NodeJS and MySQL. Expert knowledge of the Ethereum network, and the late…
Austin, Texas, United States
$50/hr · Starting at $500
Experienced software developer with a strong background in finance and blockchain. Possessing over 8 years of experience in software development, with 4 years specifically in blockchain. Skilled in de…
Kyiv, Kiev, Ukraine
$25/hr · Starting at $500
Blockchain application development, high-load web services design and AI engineering. - 3+ years of experience in Python, C/C++ and PHP with strong theoretical knowledge of language capabilities. Prac…
Seoul, Seoul-t'ukpyolsi, South Korea
ID Verified
$30/hr · Starting at $500
Senior Backend & Blockchain Engineer | 10+ Years Experience | Upwork Top Rated Plus Project Stabilization Specialist – Revived stalled or non-operational projects (e.g., Wildfireart), delivering produ…
Islamabad, Islamabad, Pakistan
$10/hr · Starting at $100
Hello! I provide blockchain development services focused on building secure, transparent, and reliable solutions tailored to real business use cases. My approach is centered on creating systems that e…
Liviv, L'vivs'ka Oblast', Ukraine
$45/hr · Starting at $150
I provide blockchain development services for clients who need secure, transparent, and reliable decentralized solutions. This service includes smart contract development, dApp development, token con…
London, England, United Kingdom
$150/hr · Starting at $15,000
Being a leader of a cutting-edge, award-winning, Web3 development and consulting company based in London, UK called Seerbytes, I can help create secure and scalable blockchain solutions. Seerbytes, u…
Kiev, Kiev, Ukraine
$20/hr · Starting at $100
Custom Backend Development: We architect and develop robust backend systems tailored to your application's specific needs. From database design to server-side logic, our experts ensure optimal functio…
Vientiane, Vientiane, Laos
$30/hr · Starting at $1,000
I provide professional Solidity smart contract development focused on secure, efficient, and scalable DeFi solutions. My services include designing and implementing staking systems, liquidity pools, A…
Benin City, Edo, Nigeria
$20/hr · Starting at $40
I offer web design and development services using the latest technologies and industry security standards. I make use of various tools in building web solutions for clients, such as: WordPress, Shopi…
Bengaluru, Karnataka, India
$30/hr · Starting at $200
I am a Senior Developer and AWS Architect. I have worked in large to very large applications, developed distributed and highly scalable, availability platforms. I have worked and developed Web Applica…
Delhi, Delhi, India
$8/hr · Starting at $30
Ethereum, Bitcoin, EOS, Smart Contract, Web3js, Node.js, EOSjs, Truffle Framework, Scatter, Metamask, Grin Master, Rust, Solidity, C/C++, Java, Angular js, Hyperledger, Master Node, ICO, STO, ERC20, E…
Mohali, Punjab, India
I hold a bachelors engineering degree in Computer Science from India. I specialize in responsive website development on the Wordpress/Magento/Shopify/Squarespace CMS. I develop in HTML, CSS, Javascri…