web3.js Jobs & Projects

25 jobs found

We found 25 web3.js jobs that paid in cryptocurrency. Search for work, find a remote job that suits your needs, and apply now!

Work and hire for crypto

Use LaborX to extend your opportunities as a freelancer or to source talent from a global marketplace. Secured by blockchain, powered smart contracts.

Looking for Blockchain Developer to fork DeFi Olympus DAO

Posted by Jiah Manoguerra

Required skills

I'm in search for an experienced Blockchain developer that can fork Olympus DAO but instead of the ETH network I'm looking to have my DAO on the BSC network. I'm needing back-end and front-end to be developed. References of what I will need have been linked below. Looking to get started ASAP so please let me know 

Budget

$2,000
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Need a developer to code NFT contract

Posted by Zel Os

Required skills

Our company is going to implement a simple NFT mint.
The artwork is ready. The website is available, with only basic web3 integration.
Your job is to create / provide a smart contract and plug it to the front-end. It is on an ethereum layer 2, so the contract will be in solidity.
There is no element of randomness, it's a single picture. There is a finite amount of mint, after which no NFT can be minted again. Also needs to be transferable.

Budget

$300
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Build a DeFi Wallet Tracking Website

Posted by Chris Nolan

Required skills

Hi,
Need a capable web developer to build a DeFi wallet tracking website tracking a specific portfolio wallet's assets across EVM chains with live charts. 
An example will be 
https://mcc.holdings/dashboard
You can use existing APIs such as Debank and Zerion:
https://openapi.debank.com/docs
https://docs.zerion.io
https://www.fohmo.io
I will need from UI/UX to front end and back end, also you must be familiar with building crypto websites and calling necessary APIs.
Site style I like will be these ones, simple and get the necessary data:
https://spartacus.finance
https://www.metaverse.pro
Please let me know if you are available and can get this site done with speed in next 1-3 days. 
If so you can apply to this job, thanks.
 

Budget

$1,000
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Develop a token bridge like TIME Bridge

Posted by Nate Green

Required skills

Hi,
I'm looking to hire a developer to build an ERC-20 token bridge like TIME Bridge, allowing an existing ERC-20 token to be able to bridge across chains while keeping the existing token supply. 
The token needs to be able to bridge between ETH, BSC and FTM.
https://timebridge.org
Will need both front end (minimal & simple) & back end work, please apply if you are familiar with token bridge building. 
 

Budget

$1,000
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Looking for Blockchain Developer to fork DeFi Olympus DAO

Posted by Alec M

Required skills

I'm in search for an experienced Blockchain developer that can fork Olympus DAO but instead of the ETH network I'm looking to have my DAO on the BSC network. I'm needing back-end and front-end to be developed. References of what I will need have been linked below.
References
Landing Page: https://www.olympusdao.finance
App: https://app.olympusdao.finance/#/dashboard
Landing Page #2: https://www.wonderland.money
App #2: https://app.wonderland.money/#/stake
I have a budget around $2,000, but I'm flexible and willing to work with any solid developer who I can trust long-term.

Budget

$2,000
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GoodDollar Bounties

Posted by GoodDollar

Required skills

GoodDollar is a non profit organization which has launched a blockchain protocol over Etherem and Fuse.io to generate and distribute free crypto universal basic income.
We have multiple bounties both for the development of the wallet (react) and of the protocol (solidity)
Some bounties are defined and has a tag price in GoodDollars.
If the bounty is not defined contact us for scope of work and bounty amount.
https://github.com/GoodDollar/bounties
for help and onboarding https://t.me/gooddollarbounties

Budget

$10,000
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DEVELOP A MULTI CRYPTO WALLET APP

Required skills

WE NEED WALLET MULTI CRYPTO AND INTEGRATE MY CUSTOM BLOCKCHAINS AND CONTRACT ON BEP20, TRC20 AND GET PROFIT PER TRANSACTIONS USERNAMES TRANSFER USING WALLET, EMAIL OR MOBILE PHONE WALLET FOR WEB, APP ANDROID, IOS and integrate my chat p2p
https://github.com/ZOE-Cash?q=community&type=&language=&sort=
we need integrate wallets from node providers like ZABO, Tatum or cybavo

Budget

$10,000
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Senior Blockchain Developer

Posted by MVP Match

Required skills

MVP Match
MVPMatch, we are a freelance network that connects the world’s best tech talent with the most ambitious companies to solve challenging problems and create amazing digital products that delight their users.
We are teaming up with a blockchain company that enables users to launch and trade their own ERC-20 tokens.
We are looking for a Senior Blockchain Developer to help build the first version of the MVP.
Your Job:
Leading the development of solidity smart contracts based on business requirements, perform testing and deployment
Collaborate on developing the blockchain architecture and product roadmap
Write technical documentation for internal users
Requirements:
1-2 years of experience with developing Ethereum smart contracts written in Solidity
Proficient in working with GoLang
Understanding of smart contract related vulnerabilities, security, and best practices
You are proactive, enjoy sharing ideas and finding ways
You follow strong coding guidelines
Good communication skills in English.
Nice to haves:
Experience with web3 related libraries.
Experience in working with Truffle.
Experience working with Polygon, Arbitrum, Loom, or other scaling solutions.
Here is the link for the project: https://elite.mvpfactory.co/main/project-invite/6149d0d8f61d980019b8ea1f

Budget

$500
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build nft mint engine and dex on solana, fantom, algorand

Posted by paul james

Required skills

is a team of blockchain developers offering our services on fiver with passion to offer best blockchain development services available in the market.
What we offer with this gig:
Frontend development with metamask integration in react js.
Backend development in node js
Smart contract erc721
Minting
Pausing / Unpausing
Supply Management
Pricing Management
Receive payments from customer in ETH/BNB or ERC20 tokens.
On chain / Off Chain Metadata management
Withdraw
Support Blockchains:
Ethereum
Binance Smart Chain
Cardano
Tron
etc.
We will deploy your contract on testnet, If you need help in deploying on mainnet let us know.

Budget

$2,000
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CiMPLE.cc (React + Meteor Devs)

Posted by CiMPLE

Required skills

The CiMPLE DAO is looking for contributors.
You can learn about what CiMPLE is here: http://CiMPLE.cc
In short, CiMPLE is a set ofstrategies and calculations that generally results in acquiring more tokens. This is done by borrowing against the tokens (when the price dips) to buy more and selling some when the price goes back up to pay down the debt and allow you to do it again on the next dip. There are also yield strategies made possible by flash loans, and insurance against liquidations from too much leverage. Finally, there are graphs to show the user how well these strategies have worked for them compared to just HODLing the tokens.
The application is built on Meteor with React as the MVC and D3.js for all the graphs.
The user's smart account is built on top of InstaDapp, so to complete any transaction, we're using their SDK.
In addition to the web application developers, we're looking for someone to make tweaks to the react code to make it compatible with react native & build an application that more/less functions as the metamask wallet on browser mode viewing the web app, including a wallet to sign transactions and a link between their mobile and web app so they can sign transactions from both devices while retaining separate wallets to sign.
LaborX requires us to put a budget, this is for on-going contributions, please submit your competitive monthly salary request and hours of availability in your application.

Budget

$5,000
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