Find Freelance Blockchain Jobs

Check out 71 posted Blockchain Jobs. At LaborX you have a great option to choose a freelance job for Blockchain Apply for a job now and get paid in cryptocurrency.
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Presale Dapp

I want a dapp on my site for presale own token . Customers can to buy presale by eth/bsc via it and after paying successful via Eth/BSC it shows them how many tokens they bought . So i can send token to them manualy after finish presale period

Solana sniper

Job Posting: Seeking a skilled developer to create a trading bot with the following features:
1. Scan feature: Ability to scan for new liquidity pools, sourced either from Raydium or a specified Telegram group.
2. Trading Sequence: Start in USD, convert to token, back to USDC, with gas fees paid in SOL.
3. Risk Management: Implement stop-loss and take-profit mechanisms, along with the option to set a minimum liquidity requirement.
4. Customizable Settings: Allow users to adjust trade duration (e.g., under 5 seconds), liquidity requirements, and investment amounts.
If interested, please provide your relevant experience, proposed implementation methods, and estimated timeline. Open to suggestions on the best approach for scanning new liquidity pools. 

I need a senior Blockchain & React Developer

We are currently seeking a highly skilled and experienced Senior Blockchain & React Developer to join our team. The ideal candidate will have a strong background in Blockchain, Crypto, web3.js, Javascript, and Dapps development. As a Senior Developer, you will be responsible for designing, developing, and implementing secure and efficient Blockchain solutions using React and other relevant technologies. You will work closely with our cross-functional teams to gather requirements and deliver high-quality products.
Responsibilities:
- Collaborate with cross-functional teams to gather and define requirements for Blockchain projects.
- Design and develop robust and secure Blockchain solutions using React and other relevant frameworks.
- Write clean, efficient, and maintainable code.
- Conduct code reviews and provide constructive feedback to team members.
- Optimize the performance and scalability of existing Blockchain systems.
- Troubleshoot and resolve technical issues in a timely manner.
- Stay up-to-date with the latest industry trends and technologies related to Blockchain and React development.
- Mentor junior developers and provide technical guidance and support.
Requirements:
- Bachelor's degree or equivalent experience in Computer Science, Information Technology, or a related field.
- Proven experience working as a Senior Blockchain & React Developer.
- Strong knowledge of Blockchain, Crypto, web3.js, Javascript, and Dapps development.
- Experience with React and other relevant frontend technologies.
- Solid understanding of smart contracts and decentralized applications (Dapps).
- Familiarity with Blockchain development frameworks (e.g., Ethereum, Hyperledger).
- Proficient in using version control systems (e.g., Git).
- Excellent problem-solving and critical thinking skills.
- Strong collaboration and communication skills.
Preferred:
- Experience working in Agile development environments.
- Familiarity with DevOps practices.
- Knowledge of other Blockchain platforms and protocols.
- Contribution to open-source Blockchain projects is a plus.
We offer a competitive salary package and a challenging work environment where you will have the opportunity to make a significant impact. If you are passionate about Blockchain technology and have the required skills, we would love to hear from you. Apply now!

deploy this telegram bot on Eth mainnet and some l2

The bot will be deployed on etherum but the product will be available on L2s like scroll, linear and base.

Creations of Web3 TDL (top level domain)

Looking for expert to create and launch smart contract for creations of Web3 TDLs (top level domains).

Integrating blockchain and NFT into the game

Goal: Integrate blockchain and create mechanisms to support digital assets in the form of NFTs (non fungible tokens) within the game.
Define NFT objects: Develop a list of digital assets that will represent NFT objects in the game. These could be unique items, characters, real estate, or other important elements of the game's virtual economy.
(Don't worry, we'll provide you with some blanks!)
Create smart contracts: Using the chosen blockchain platform, design and implement smart contracts that will manage the creation, exchange, and ownership of NFT objects. Consider features such as uniqueness, ownership, transfer of rights, and tradeability. (We will guide you and help you at every stage of creation)
Integrate blockchain into the game: Link your game to the blockchain to enable interaction with NFT objects. Develop mechanisms for creating and monetizing NFTs, and for buying, selling or exchanging NFT objects between players.

Need Senior Solana Developer

I have a p2p trade project.
A user create offer to buy token and other create order to sell token.
But cancelling offer doesn't work.
You can check with this link:
https://mansa-trade.com
If you can fix it, let me know.
Thanks

Dapp update with bug fix and completion

We are new company which want to make our own cryto project as first ranking in the crypto world.
We will launch our own appasap but it still has got some bugs and also needs to add more features for completion.
Our old developer has got problems now and so we need more developers who are really good at smart contract/web3 UI.
If you are good at above skills, please reply. We will share with you all informations about our projects and we can deal other more important things.
We will share current projects with you and will hire with highly rate.
Remember that we will hire only talent and experts.
Thanks

uploading deploying code / clean up code sec marketplace

simple onboarding of smart contract into network (create buy sell transaction allocated fees), code clean up if necessary to function . 
20$ usd 

Fork indexer and onepage frontend using react, tailwind

In direct. Using react, ethers, axios, tailwind, wagmi (https://wagmi.sh/) and rainbowkit (https://www.rainbowkit.com/)

Crypto Arbitrage HFT Bot

Hi Dev,
Subject: Crypto Arbitrage High Frequency Trading Bot 
I am looking for a crypto arbitrage trading (HFT) bot with simple dashboard for CEX which gives daily percentage of 3% - 7% or even more with 0% risk.
I have researched and found below strategies, kindly check and let me know if this is okay or suggest me the best strategies if you can.
● Market Making
● Cross Market
● Triangular and Latency Arbitrage
 
Also, let me know if it is good idea to make use of hummingbot open source code for this project.
Please let me know.
Thank You!

create an nft mining website

i need a developer who can help me with my project send me your offers and i will get back to for moreinfo about my project!!!