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Check out a sample of the 195 Smart Contracts jobs posted on Upwork

Custom blockchain development. Hourly ‐ Posted 20 days ago

30+ hrs/week
Hours needed

More than 6 months
Duration

Intermediate
Experience level

Custom blockchain development. A mixed blockchain( POS & POW) with multiple functionality, private lines and a public line, API featur…

Smart Contracts Ethereum Cryptocurrency Bitcoin Smart Contract Blockchain Development Blockchain Architecture Blockchain
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I have problem in withdrawal usdt from tron contract Fixed-price ‐ Posted 16 days ago

US$200
Fixed-price

Expert
Experience level

I have a smart contract on Tron network to the address : TD69nKrH492mn4WNhjrzKts8Yg2i6q7Hfj All the functions of this contract work ex…

Smart Contracts Blockchain Cryptocurrency Smart Contract Solidity
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Meme Token + Unity Game Developer Required. Hourly ‐ Posted 16 days ago

Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Expert
Experience level

Hi, I need an indie developer or a team(preferred), who can help me in creating a meme Token and then integrate that into a unity game…

Smart Contracts Smart Contract Solidity Game Development Unity
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Crypto Wallet Developer Hourly ‐ Posted 15 days ago

Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Intermediate
Experience level

Job Title: Experienced Crypto Wallet Developer Introduction: We are seeking an experienced Crypto Wallet Developer to join our innovat…

Smart Contracts Blockchain Development iOS Smart Contract Bitcoin Gold DApps Initial Coin Offering Smartphone API Integration Bitcoin
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Smart Contract Developer Hourly ‐ Posted 12 days ago

30+ hrs/week
Hours needed

More than 6 months
Duration

Expert
Experience level

Looking to hire a smart contract developer to build a defi platform.

Smart Contracts Solidity Ethereum Blockchain Smart Contract
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Need blockchain and token developer Chandigarh only Fixed-price ‐ Posted 19 days ago

US$1,000
Fixed-price

Expert
Experience level

I from Chandigarh area who understand the blockchain and already danda token works and contract works on the blockchain I want to start…

Smart Contracts Cryptocurrency Smart Contract Blockchain Development Blockchain Architecture Ethereum Blockchain
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30+ hrs/week
Hours needed

1 to 3 months
Duration

Intermediate
Experience level

We are seeking a highly skilled and experienced Blockchain Developer to help us transition our existing blockchain ecosystem from Solid…

Smart Contracts Ethereum Blockchain Architecture Blockchain Development Blockchain Solidity Smart Contract Rust
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US$2,000
Fixed-price

Expert
Experience level

Again: It's not the fastest applicant who wins. Rather, it's the one who has read everything carefully and addresses the points. I will…

Smart Contracts Blockchain Architecture Blockchain Ethereum Smart Contract Solidity
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Blockchain Marketplace Developer Hourly ‐ Posted 12 days ago

Less than 30 hrs/week
Hours needed

3 to 6 months
Duration

Intermediate
Experience level

We are seeking a skilled developer with a strong background in blockchain marketplace development, web3, and NFT to join our team. As a…

Smart Contracts JavaScript Smart Contract Ethereum Blockchain Blockchain Architecture
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Blockchain Smart Contracts Developer needed. Fixed-price ‐ Posted 11 days ago

US$20
Fixed-price

Intermediate
Experience level

I need two developer for blockchain project. Please check the docs before write cover letter. https://docs.google.com/document/d/17lDK…

Smart Contracts API Blockchain Development React Smart Contract Blockchain
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