Blockchain & Crypto Jobs & Projects

108 jobs found

We found 108 Blockchain & Crypto jobs that paid in cryptocurrency. Search for work, find a remote job that suits your needs, and apply now!

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NFT Game

Posted by Bluestar Super

Required skills

Hi there
We are looking for a developer to write a smart contract on polygon network for nft game.
To get more detail about the game, consult more detail.
And please introduce your simple bio in your proposal.
This will be salary contract for 2~3 months.
Regards.

Budget

$4,500
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Blockchain Development Ideas

Posted by Stephen Bishop

Required skills

I am in the process of brainstorming for a new startup using blockchain technology to create a decentralised marketplace in the travel industry. I run an existing travel business, but do not have enough expertise in blockchain development. I need an expert to help me create ideas of how this can work.

Budget

$500
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NFT Marketplace MVP

Posted by Terrance Porter

Required skills

We're looking to bring in a Principal Engineer to provide thought leadership for our project. We're a startup looking to release our Marketplace that has a twist to it. We have the front-end development covered but need to have our backend developed. 
We have a configurator we've built and the next step is to build a secondary marketplace around it & on chain. 

Budget

$5,000
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Calling Eth contract withdraw function

Posted by hello

Required skills

Our last dev screwed us. We have some money in a smart contract that we want to receive. I have the admin wallet and the last version of the withdraw function before the last dev deleted the code on github. The contract is unverified on the Eth mainnet. I don't think it will be hard to withdraw but I just want to make sure it's not screwed up. 

Budget

$100
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Smart Contract Consultation and Code Review

Posted by Dragon Baby LLC

Required skills

We're about 4-5 weeks into building a blockchain-based game (about which we can provide more detail).
We need a developer with great blockchain experience who can help us with the following 2 things:
1. Periodic consultation (via chat, call, or email) to answer questions and help us or our devs solve certain problems;
2. Ongoing code review (likely 1-2 times per week) of smart contracts and related code, to ensure accuracy, security, etc.
There's also some potential for doing some collab development with our current devs, but that's not what we're primarily looking for at the moment.
This will likely be a 2-3 month project, since all of the smart contract work will be finalized within that period, and would likely be around 5 hours per week.
We're open to either project-based pricing or hourly pricing, although the latter would be easier.

Budget

$5,000
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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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hiring blockcahin developer with long term

Posted by Mark tony

Required skills

Hi, We are a NFT company looking for a senior developer for our project. Need to have a good understanding of the NFT world and be creative. Our project got a strong community following us and we need someone serious and motivated. Salary to % of theincreasing possible. 
Skills:
 smart contract 
generate collection
 deployment opensea with attributes 
HTML/java
 solidity 
blockchain 
plus :React or Angular,Node,Golang
Looking forward for your candidature.
to communicatewith us please check attach file.
thanks

Budget

$8,000
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Dapp frontend and contracts integration

Posted by Joop Jo

Required skills

We are looking for a freelancer who is able to setup the following in our DApp
- integration of the contracts on the front-end
- Tweak existing the front-end to suit our project 
- review and provide deploy script for existing staking contract
brief-overview is attached for more details or at
https://docs.google.com/document/d/1yJYLRzCpERzi1m90qDI3OuAVRhYBeivZ03wpwV8qlNM/edit?usp=sharing
I'll pay you on polygon
all above on polygon chain

Budget

$100
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SOL Developer with Metaplex experience required

Posted by Wong Say Jon

Required skills

We're building a NFT marketplace on the Solana blockchain, using Metaplex.
PRIOR AND DIRECT EXPERIENCE WITH METAPLEX REQUIRED.
So we require an experienced developer to develop the following:
1. Allow users to list their tokens for sale
2. Allow buyer to "purchase" their tokens and our platform can extract a fee
The work we require is a Program design which will help achieve this in the best possible manner. I would think that when users list their tokens to us, we need to assure them that we're not going to simply run away with it. So the Program may need to have a mechanism where although the token is passed to us, the original owner can withdraw it back IF it hasn't been sold away.
We might achieve the above using Metaplex, or via custom Program.
IF you're interested to apply, please tell me: Can we achieve the above using Metaplex out-of-the-box? If no, what net-new is required?
Thank you.

Budget

$3,000
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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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Gaming for play to earn

Posted by Frank Iannelli

Required skills

Hi, 
I am looking for someone to participate in play to earn gaming namely Axie Infinity but also others that will earn tokens/cryptocurrencies. Please contact me to discuss budget, length of contract, experience, time playing etc
Thankyou
Frank

Budget

$150
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Blockchain Related Services

Posted by Anonymous

Required skills

Hello,
This is Arjun (Business Analyst)
I Have experience of around 8+ years in blockchain and we have delivered many successful projects to our clients so far.
Listed below are the Mainstream services that we offer:
1. Custom Web and Mobile App Development
2. NFT Token Development
3. NFT Marketplace Development
4. De Fi Platform
5. All types of Cryptocurrency Exchange Development
6. Crypto wallet application development
7. Ethereum, BSC, Tron standard tokens, and Custom coin Creation
8. Blockchain Development Services
Kindly Ping me to discuss further

Budget

$5,000
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Crypto Market Research

Posted by Rob Ross

Required skills

Crypto startup seeks a motivated, super smart and results driven analyst to provide expert market research to co-founders. You’ll be paid to research crypto ecosystems on a per-project basis. Preferred knowledge/awareness of Dapps, DeFi, Liquidity Pools, Coin Utility, Tokenomics, etc.

Budget

$300
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