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Check out a sample of the 257 Smart Contracts jobs posted on Upwork

Experienced Solidity Developer Needed Hourly ‐ Posted 7 days ago

Less than 30 hrs/week
Hours needed

1 to 3 months
Duration

Intermediate
Experience level

We are seeking an experienced Solidity developer to join our team. As a Solidity developer, you will be responsible for designing, impl…

Smart Contracts Blockchain Architecture Smart Contract Node.js Blockchain JavaScript
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Solana swap script Fixed-price ‐ Posted 6 days ago

$150
Fixed-price

Expert
Experience level

I need to have a few things 1- a csv file where i can input private keys for the script to use the wallets that are in that csv 2- pr…

Smart Contracts Blockchain JavaScript Smart Contract TypeScript Python web3.js
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Solidity Developer Hourly ‐ Posted 6 days ago

Less than 30 hrs/week
Hours needed

More than 6 months
Duration

Intermediate
Experience level

We are seeking a skilled Solidity Developer to join our team and contribute to the development of smart contracts on the Ethereum block…

Smart Contracts Blockchain Architecture JavaScript Ethereum Smart Contract Solidity
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Blockchain Architect Hourly ‐ Posted 5 days ago

Less than 30 hrs/week
Hours needed

3 to 6 months
Duration

Expert
Experience level

I am currently looking for a Lead Blockchain Architect who can draft a comprehensive and scalable architecture for a DAO project idea,…

Smart Contracts Ethereum Smart Contract Software Architecture & Design Blockchain Development Blockchain Architecture Blockchain
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Hours to be determined
Hours needed

1 to 3 months
Duration

Intermediate
Experience level

Project to be build using existing scrips, platforms and templates. To be integrated and smartcontracrs implemented. Working knowledge…

Smart Contracts API HTML JavaScript PHP Smart Contract Ethereum
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Experienced Solidity Developer Needed Fixed-price ‐ Posted 7 days ago

$4,000
Fixed-price

Intermediate
Experience level

We are seeking an experienced Solidity developer to join our team. As a Solidity developer, you will be responsible for designing, impl…

Smart Contracts Blockchain Architecture Smart Contract Node.js Blockchain JavaScript
See more
Solidity Developer Hourly ‐ Posted 6 days ago

Less than 30 hrs/week
Hours needed

More than 6 months
Duration

Intermediate
Experience level

We are seeking a skilled Solidity Developer to join our team and contribute to the development of smart contracts on the Ethereum block…

Smart Contracts Blockchain Architecture JavaScript Ethereum Smart Contract Solidity
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Rust Developer - Smart Contract Creation Fixed-price ‐ Posted 5 days ago

$1,000
Fixed-price

Intermediate
Experience level

Job Description: We are seeking a motivated Rust developer to join our team and contribute to the development of a new smart contract…

Smart Contracts Cryptocurrency Smart Contract Blockchain Rust
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crypto consultant for Payment Gateway Integration Fixed-price ‐ Posted 5 days ago

$35
Fixed-price

Intermediate
Experience level

Need a technical consulting / discussion and guidance for website development on Cryptocurrency Payment Gateway Integration. Specifica…

Smart Contracts Smart Contract Blockchain Payment Gateway Integration Cryptocurrency
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Senior Solidity developer Hourly ‐ Posted 4 days ago

30+ hrs/week
Hours needed

More than 6 months
Duration

Expert
Experience level

We are Blaize. Founded in 2016, Blaize company covers all areas of blockchain and crypto development, including projects in DeFi, NFT-…

Smart Contracts Smart Contract Blockchain Architecture JavaScript API Ethereum Solidity
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