/r/ethdevjobs
A place to discuss about ethereum developer jobs
A place to discuss about ethereum developer jobs
/r/ethdevjobs
Hey all! Just wanted to share the latest Solidity jobs that I saw this week. Hope this will be helpful for everyone who's looking for new opportunities.
Senior Fullstack Engineer at Paradex. Join Paradex, a dynamic Super App that integrates Exchange, Asset Management, and Borrow/Lend Markets. As a Senior Fullstack Engineer, you'll be instrumental in driving the lifecycle of major features, focusing on decentralized protocols and smart contracts. Ideal candidates have 5+ years in backend engineering, extensive blockchain proficiency, and cloud-native experience. Paradex offers top-tier compensation, unlimited vacation, and generous technology allowances. Apply here
Solutions Support Engineer at Paradigm. Become part of Paradigm's mission to revolutionize financial services across CeFi and DeFi. This role involves providing crucial technical support to top clients and developing tools to enhance product performance. Candidates should have 5+ years in client-facing technical roles, experience with API integration, and a knack for proactive problem-solving. Competitive pay, flexible PTO, and comprehensive benefits are offered. Apply here
Sr Software Engineer Mobile React-Native at Safe.Global. Work with Safe, the leader in Ethereum smart wallet infrastructure, to develop a new mobile app. This role emphasizes high-quality code, feature implementation, and performance optimization. Candidates should have 4+ years in React Native, familiarity with TypeScript, and experience in Web3. You'll enjoy flexible work schedules, home office budgets, and continuous learning opportunities. Apply here
Full-Stack Engineer (Web3) at Cere Network. At Cere, you'll develop and optimize blockchain protocols and applications using Substrate. The position requires proficiency in Node.js, Express, and blockchain technologies, with opportunities for growth within a multinational team. Successful candidates will contribute to decentralized data infrastructure, enjoying a hybrid work model and cutting-edge projects. Apply here
SMM Manager at Kinetex Network. Engage with the crypto community by managing Swaps' presence on social platforms. This role requires a keen understanding of DeFi culture, social media analytics, and content creation skills. Kinetex values creativity and genuine community interaction. Be part of their innovative journey in DeFi, with a focus on trends and engagement strategies. Apply here
Let me know if these are useful. Thanks fam!
Hey all! Just wanted to share the latest Solidity jobs that I saw this week. Hope this will be helpful for everyone who's looking for new opportunities.
Senior Fullstack Engineer at Paradex. Paradex is more than just a decentralized exchange; it’s a Super App, combining exchange, asset management, and borrow/lend markets under one umbrella. As a Senior Fullstack Engineer, you'll lead the charge in building features from concept to launch, improve blockchain smart contract platforms, and enhance customer experiences while tackling scalability challenges. Apply here
Solutions Support Engineer at Paradigm. Join Paradigm to innovate in the financial service infrastructure sector for CeFi and DeFi markets. Your role involves working directly with clients, providing essential technical support, and developing tools to enhance product and client success. Your proactive approach can significantly impact client engagement and satisfaction in the evolving crypto landscape. Apply here
Sr Software Engineer Mobile React-Native at Safe.Global. Based in Berlin, you’ll develop a new mobile app from scratch, emphasizing high-quality code and collaboration with cross-functional teams. Your strong proficiency in React Native and experience in Web3 will help drive the mission to accelerate the transition to smart accounts in a thriving, inclusive environment. Apply here
Web3 Backend Engineer (Rust) at CoW DAO (CoW Swap). CoW Swap is a leader in DEX aggregation and MEV protection. As a senior backend engineer, you’ll own backend services and shape the development of decentralized trading protocols, working closely with Ethereum smart contracts, contributing to the CoW Protocol's cutting-edge tech stack. Apply here
SMM Manager at Kinetex Network. Join Swaps by Kinetex Network to transform social engagement with cryptocurrency. Your role will involve crafting and executing social media strategies on platforms like Twitter, engaging with the community, and synchronizing efforts with marketing campaigns to amplify the presence in the DeFi world. Apply here
Let me know if these are useful. Thanks fam!
Hey all! Just wanted to share the latest Solidity jobs that I saw this week. Hope this will be helpful for everyone who's looking for new opportunities.
Solutions Support Engineer at Paradigm. Dive into a career with Paradigm, a zero-fee institutional liquidity network revolutionizing derivatives trading in CeFi and DeFi markets. You'll be at the forefront of building financial infrastructure and work directly with top clients to provide technical support, ensuring seamless API integrations and developing analytical tools. Ideal candidates will have five years of client-facing experience, proficiency with tools like Datadog, GitHub, and API integration, and be ready for on-call duties. Relocation to Singapore is required for this role. Apply here
Sr Software Engineer Mobile React-Native at Safe.Global. Join Safe, a leader in Ethereum smart wallet infrastructure, to develop a new mobile app from scratch. Based in Berlin, you'll focus on high-quality code using React Native, TypeScript, and a deep understanding of mobile development cycles. The role encourages collaboration with cross-functional teams and provides opportunities for mentorship. Experience in Web3 development, specifically with crypto wallets, is a plus. Apply here
Web3 Backend Engineer (Rust) at CoW DAO (CoW Swap). Become part of CoW DAO’s mission to secure Ethereum users against DeFi risks. As a backend engineer, you'll work on decentralised trading protocols, using Rust to build systems that support evolving blockchain applications. You'll interact with Solidity smart contracts and play a key role in feature development. This fully remote role prefers candidates based in Europe or within +/- 4 hours of CEST. Apply here
SMM Manager at Kinetex Network. This remote role involves managing and growing the social media presence of Swaps by Kinetex Network. By leveraging your expertise in crypto trends and social media platforms, especially Twitter, you'll craft engaging content and develop strategies to boost engagement. A strong background in DeFi and a keen understanding of crypto culture are essential. Apply here
Senior Backend Developer at Wonton. Join the team behind Wonton, a Telegram mini-game platform. This role is crucial for designing and maintaining scalable backend services. Expertise in Node.js (ExpressJS, NestJS), TypeScript, and RDBMS like MySQL or PostgreSQL is required. Experience with blockchain environments and smart contracts is advantageous. The position offers a remote work setup. Apply here
Let me know if these are useful. Thanks fam!
Hey all! Just wanted to share the latest Solidity jobs that I saw this week. Hope this will be helpful for everyone who's looking for new opportunities.
Monarch's Right Hand Man at CSGOEmpire. This unique role involves running the day-to-day operations of Monarch's personal and professional life, especially within the exciting crypto/CSGO skin gambling space. If you are an expert with a passion for crypto, a knack for turning ideas into reality, and are ready for a demanding live-in role across Europe and the Middle East, this might be for you. Benefits include a $20k/month start with perks like luxury accommodations and a private chef. Apply here
Solutions Support Engineer at Paradigm. Join Paradigm to innovate within CeFi and DeFi markets, providing technical support to top clients. This involves API integration, developing analytical tools, and creating automation for seamless client engagement. Prior experience in client-facing roles and proficiency in tools like Datadog and Grafana is required. Opportunities include top-tier compensation and a comprehensive benefits package in Singapore. Apply here
Senior Backend Engineer at Pichi Finance. Be a part of the first trustless points trading protocol, working on optimizing backend systems and building scalable features. Required skills include proficiency in Nest.js with TypeScript, Node.js, AWS, and PostgreSQL. If you're passionate about Web3 and DeFi/PointsFi, this remote role offers competitive compensation and the opportunity to work in a dynamic environment. Apply here
Web3 Backend Engineer (Rust) at CoW DAO (CoW Swap). This role is perfect for someone looking to build decentralized trading protocols. You will be involved in writing Rust backend systems, interacting with Solidity smart contracts, and addressing technical challenges in DeFi protocols. Enjoy the flexibility of a remote working environment with a preference for candidates close to the CEST timezone. Apply here
Senior Backend Developer at Wonton. Focus on developing and maintaining secure, scalable backend services for a Telegram mini-game. Key responsibilities include designing APIs, ensuring application reliability, and collaborating on blockchain-adjacent projects. Proficiency in Node.js, TypeScript, MySQL, and cloud services like AWS is required. Apply here
Let me know if these are useful. Thanks fam!
Hey all! Just wanted to share the latest Solidity jobs that I saw this week. Hope this will be helpful for everyone who's looking for new opportunities.
Monarch's Right Hand Man at CSGOEmpire. This unique role is for someone to manage the day-to-day activities of Monarch, with deep involvement in CSGOEmpire's operations. Ideal candidates are crypto/CSGO skin gambling experts, have a proven track record of building and scaling projects, and are willing to commit to a demanding live-in role across Europe or the Middle East. You'll have the chance to significantly impact the company's operations and drive projects from loose ideas to solid strategies, while building and leading your own team. Starting salary is $20k/month, with luxury accommodations and a private chef included. Apply here
Senior Backend Engineer at Pichi Finance. This role involves working on optimizing Pichi's backend system and developing new features for their trustless points trading protocol. You'll need strong proficiency in Nest.js with TypeScript, experience with AWS services, and familiarity with blockchain concepts. It's a remote position offering competitive compensation in both tokens and fiat, with performance adjustments. Apply here
Full Stack Developer at InfiniFi Labs. Join InfiniFi Labs to build a decentralized financial system that maximizes returns and collapses traditional banking inefficiencies. The role involves full-stack development, blending front-end frameworks like React or Svelte with backend tasks. You'll work in a fully remote environment for a company dedicated to making banks obsolete through blockchain. Apply here
Solidity Developer at InfiniFi Labs. This role is perfect for those who want to write impactful smart contracts in Solidity and reshape financial systems. You'll work closely with the technical team, focusing on Solidity development efforts to create secure and efficient engineering solutions. It comes with competitive compensation in a fully remote setup. Apply here
Senior Backend Developer at Wonton. This position requires designing scalable and secure backend services to optimize user experience for a Telegram mini-game. Proficiency in Node.js frameworks, relational databases, and a good understanding of blockchain technologies are essential. The job offers a chance to work on innovative applications and interact with blockchain environments. Apply here
Let me know if these are useful. Thanks fam!
Salary 12000k USD.
Positioning : Web3 Crypto Trading.
platform Engineer
Join our expanding team, We recently secured $3M funding to grow further.
Requirements:
• Proficiency in Go / Rust
• Experience in trading/sniper/MEV bot development, Geth customizations.
• Familiarity with latency optimization and high-performance applications
• General dev-ops, networking knowledge
• Solidity, SQL, Mongo, Postgres, Redis, Cloud (Hetzner/AWS) expertise
• Fast, clear-thinking coder for high-stakes MEV trading
• built trading bots/sniper bots!
• Smart contract development experience
contract emulation on the evm level
solana
MPC
Nice to have:
• Track record of tackling cool, challenging projects
Our Web UI is set. Work alongside our lead developer on trading strategies. Long-term position. Interested? Submit your resume, cover letter, and GitHub links. We're eager to connect with top talent!
Contract : DM
Hi guys, I am Atilla. I've contributed to many large scale crypto projects as a blockchain and MERN stack developer, some of them being BitPay, StellaSwap and Dash to name a few. I am now looking for more flexible short term freelance work.
My back-end skills:
My front-end skills:
- ReactJS, Redux, React Native (with crypto wallet integration)
- Firebase
- Material and TailwindCSS
- Mobile responsive design
- ThreeJS, Unity3d, metaverse and gambling games
- dapp minting and NFT minting pages
My blockchain skills:
- ETH/BSC: Solidity smart contracts, pentesting and static analysis, hardhat, random mint NFT,
- Polkadot/Moonbeam: smart contracts, Moonbeam XCM, Parachain deployment and management, Pallet development,
- TON: Telegram mini apps, TON token and NFT launches, smart contracts
- TRON: TRC20 contracts, JustSwap API integration, NFT launches and front-end integration using tronweb
- Solana: Rust Anchor smart contract development, pump fun bots, transaction parsing using gRPC, rpc node and validator setup,copy trade and sniper bots, NFT contracts with vesting etc
I'll share my github and linkedin in private as I had my repos stolen a few times, thanks for understanding!
In need of a short-term contractor to help us knock out a few issues on our React Native mobile app:
Paid. Seeking a competitive rate. DM me.
Looking for a developer who can make telegram based game
Hello,
I hope everyone is doing great. My name is Nabeel and I am a Professional UI/UX Designer and Website Developer. I also do Graphic Designing for my projects. I have been working in the IT Space for nearly 8 years now and I have worked with a lot of clients, working on several projects and completed them successfully. Here is my area of expertise along with the services I offer -
1. Website Design - I can design Websites, Landing Pages, Capture Pages, Web Apps, Mobile Apps, Browser Extensions etcetera using Figma.
2. Website Development - I can develop websites using React, Next.js, PHP and more. Also, I can build websites using Wordpress, Webflow and Shopify.
3. Graphic Design - I can make Promotional Videos, Logo, Branding, Pamphlets, Flyers, Brochures, Powerpoints, Banners and more.
If anyone is looking for a Designer or Developer, I would love to connect with you and work on your projects. Thank you so much and I will be looking forward to your comments/messages.
P.S I will share my work portfolio in DM.
Regards,
Nabeel
Attached link to my resume. I am even open to work for $20/hr, which is negotiable too.
Hey everyone,
I'm looking for a joint venture partner who has a crypto token. I have a crypto bounty platform that's perfect for promoting your token. Here's what we can do together:
What I Offer:
What You Bring:
Bounty Hunter Tasks:
If you're interested, PM me and let's discuss how we can make this happen!
Since the day I saw it, I found the name "Merkle Tree" scary. Turns out they were not, and quite useful. Here, check my guide out. In this article I first briefly talk about merkle trees, and then directly get into building one, and then writing a smart contract that only whitelisted addresses can interact, and finally testing it via Hardhat. I hope you'll enjoy =>
Hello everyone! In this article, we will first talk about Merkle Trees, and then replicate a whitelisting scenario by encrypting some "whitelisted" addresses, writing a smart contract in Solidity that can decode the encrption and only allow whitelisted addresses to perform some action, and finally testing the contract to see whether our method works or not.
IF you already know about merkle trees and directly start with the hands-on experience, you can skip the Theory part and start reading from the Practice section.
In the evolving world of blockchain and decentralized applications (dApps), efficient and secure management of user access is paramount. One popular method for controlling access is through whitelisting, where only approved addresses can interact with specific functionalities of a smart contract. However, as the list of approved addresses grows, maintaining and verifying this list in an efficient and scalable manner becomes a challenge.
This is where Merkle trees come into play. Merkle trees provide a cryptographic way to handle large sets of data with minimal storage and computational overhead. By leveraging Merkle trees, we can efficiently verify whether an address is whitelisted without needing to store or process the entire list of addresses within the smart contract.
In this tutorial, we'll dive deep into how to implement a whitelisting mechanism using Merkle trees in Solidity. We'll cover the following key aspects:
Understanding Merkle Trees: A brief overview of what Merkle trees are and why they are useful in blockchain applications.
Setting Up the Development Environment: Tools and libraries you need to start coding.
Creating the Merkle Tree: How to generate a Merkle tree from a list of whitelisted addresses.
Solidity Implementation: Writing the smart contract to verify Merkle proofs.
Verifying Addresses: Demonstrating how to use Merkle proofs to check if an address is whitelisted.
Testing the Contract: Ensuring our contract works correctly with various test cases.
By the end of this tutorial, you'll have a robust understanding of how to leverage Merkle trees for efficient and secure whitelisting in Solidity smart contracts, providing you with a powerful tool for your future dApp development endeavors.
Merkle trees, named after computer scientist Ralph Merkle, are a type of data structure used in computer science and cryptography to efficiently and securely verify the integrity of large sets of data. In the context of blockchain and decentralized applications, Merkle trees offer significant advantages for managing and verifying data with minimal overhead.
What is a Merkle Tree?
A Merkle tree is a binary tree in which each leaf node represents a hash of a block of data, and each non-leaf node is a hash of its two child nodes. This hierarchical structure ensures that any change in the input data results in a change in the root hash, also known as the Merkle root.
Here’s a simple breakdown of how a Merkle tree is constructed:
Leaf Nodes: Start with hashing each piece of data (e.g., a list of whitelisted addresses).
Intermediate Nodes: Pair the hashes and hash them together to form the next level of nodes.
Root Node: Repeat the process until a single hash remains, known as the Merkle root.
This structure allows for efficient and secure verification of data.
Why Merkle Trees are Useful in Blockchain Applications
Merkle trees are particularly useful in blockchain applications for several reasons:
Efficient Verification: Merkle trees enable the verification of a data element's inclusion in a set without needing to download the entire dataset. This is achieved through a Merkle proof, which is a small subset of hashes from the tree that can be used to verify a particular element against the Merkle root.
Data Integrity: Any alteration in the underlying data will change the hash of the leaf node and, consequently, all the way up to the Merkle root. This makes it easy to detect and prevent tampering with the data.
Scalability: As the size of the dataset grows, Merkle trees allow for efficient handling and verification. This is particularly important in blockchain networks where nodes need to validate transactions and states without extensive computational or storage requirements.
Security: Merkle trees provide cryptographic security by using hash functions that are computationally infeasible to reverse, ensuring that the data structure is tamper-proof and reliable.
Practical Use Cases in Blockchain
Bitcoin and Ethereum: Both Bitcoin and Ethereum use Merkle trees to organize and verify transactions within blocks. In Bitcoin, the Merkle root of all transactions in a block is stored in the block header, enabling efficient transaction verification.
Whitelisting: In smart contracts, Merkle trees can be used to manage whitelisted addresses efficiently. Instead of storing a large list of addresses directly on-chain, a Merkle root can be stored, and users can prove their inclusion in the whitelist with a Merkle proof.
Enough theory, now it is time to get our hands dirty. We are going to create an empty folder, and run the following command on the terminal to install Hardhat => npm install --save-dev hardhat
Then, with `npx hardhat init` command, we will start a Hardhat project. For this project, we will use Javascript.
After the project has ben initiated, we will install these following packages also => npm install @openzeppelin/contracts keccak256 merkletreejs fs
In this step, we have a bunch of whitelisted addresses, we will write the script that will construct the merkle tree using those addresses. We will get a JSON file, and a single Merkle Root. We will use that merkle root later on to identify who's whitelisted and who's not.
In the main directory of the project, create `utils/merkleTree.js`
```js
const keccak256 = require("keccak256");
const { default: MerkleTree } = require("merkletreejs");
const fs = require("fs");
//hardhat local node addresses from 0 to 3
const address = [
"0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
"0x70997970C51812dc3A010C7d01b50e0d17dc79C8",
//"0x3C44CdDdB6a900fa2b585dd299e03d12FA4293BC",
"0x90F79bf6EB2c4f870365E785982E1f101E93b906",
];
```
Note that we commented the address number 2.
You see we do not need to manually write the logic for the merkle tree, we're using a library for ease of development. The addresses are the first 4 addresses in Hardhat node. Do not send any money to them, their private keys are publicly known and anything sent to them will be lost.
Now, we will do the following:
Hash all individual items in the address array (creating leaves)
construct a new merkle tree
```
// Hashing All Leaf Individual
//leaves is an array of hashed addresses (leaves of the Merkle Tree).
const leaves = address.map((leaf) => keccak256(leaf));
// Constructing Merkle Tree
const tree = new MerkleTree(leaves, keccak256, {
sortPairs: true,
});
// Utility Function to Convert From Buffer to Hex
const bufferToHex = (x) => "0x" + x.toString("hex");
// Get Root of Merkle Tree
console.log(`Here is Root Hash: ${bufferToHex(tree.getRoot())}`);
let data = [];
```
You see that we're logging the root hash. We will copy it when we run the script.
And now we'll do the following:
Push all the proofs and leaves in the data array we've just created
Create a whitelist object so that we can write into a JSON file
Finally write the JSON file
```js
// Pushing all the proof and leaf in data array
address.forEach((address) => {
const leaf = keccak256(address);
const proof = tree.getProof(leaf);
let tempData = [];
proof.map((x) => tempData.push(bufferToHex(x.data)));
data.push({
address: address,
leaf: bufferToHex(leaf),
proof: tempData,
});
});
// Create WhiteList Object to write JSON file
let whiteList = {
whiteList: data,
};
// Stringify whiteList object and formating
const metadata = JSON.stringify(whiteList, null, 2);
// Write whiteList.json file in root dir
fs.writeFile(`whiteList.json`, metadata, (err) => {
if (err) {
throw err;
}
});
```
Now, if we run `node utils/merkleTree.js` in the terminal, we will get something like this: Here is Root Hash: 0x12014c768bd10562acd224ac6fb749402c37722fab384a6aecc8f91aa7dc51cf
We'll need this hash later.
We also have a whiteList.json file that should have the following contents:
```json
{
"whiteList": [
{
"address": "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
"leaf": "0xe9707d0e6171f728f7473c24cc0432a9b07eaaf1efed6a137a4a8c12c79552d9",
"proof": [
"0x00314e565e0574cb412563df634608d76f5c59d9f817e85966100ec1d48005c0",
"0x1ebaa930b8e9130423c183bf38b0564b0103180b7dad301013b18e59880541ae"
]
},
{
"address": "0x70997970C51812dc3A010C7d01b50e0d17dc79C8",
"leaf": "0x00314e565e0574cb412563df634608d76f5c59d9f817e85966100ec1d48005c0",
"proof": [
"0xe9707d0e6171f728f7473c24cc0432a9b07eaaf1efed6a137a4a8c12c79552d9",
"0x1ebaa930b8e9130423c183bf38b0564b0103180b7dad301013b18e59880541ae"
]
},
{
"address": "0x90F79bf6EB2c4f870365E785982E1f101E93b906",
"leaf": "0x1ebaa930b8e9130423c183bf38b0564b0103180b7dad301013b18e59880541ae",
"proof": [
"0x070e8db97b197cc0e4a1790c5e6c3667bab32d733db7f815fbe84f5824c7168d"
]
}
]
}
```
Now, check this Solidity contract out:
```js
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.24;
import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol";
// Uncomment this line to use console.log
// import "hardhat/console.sol";
contract MerkleProofContract {
bytes32 public rootHash;
constructor(bytes32 _rootHash) {
rootHash = _rootHash;
}
function verifyProof(
bytes32[] calldata proof,
bytes32 leaf
) private view returns (bool) {
return MerkleProof.verify(proof, rootHash, leaf);
}
modifier isWhitelistedAddress(bytes32[] calldata proof) {
require(
verifyProof(proof, keccak256(abi.encodePacked(msg.sender))),
"Not WhiteListed Address"
);
_;
}
function onlyWhitelisted(
bytes32[] calldata proof
) public view isWhitelistedAddress(proof) returns (uint8) {
return 5;
}
}
```
What it does is the following:
Imports Openzeppelin's merkle proof contract
Enters the root hash we've just saved in the constructor. This means that there will be no more whitelisted accounts added, and it is final
a private verifyProof function invokes Openzeppelin and requires the proof from the user
a isWhitelistedAddress modifier makes sure that msg.sender is the whitelisted address. Without this modifier, anyone with the public whitelisted address could call the contract, now, only the owner of the whitelisted address can call
a basic onlyWhitelisted function requires the user proof and returns 5. That's is, we just want to see if we can call this function as a non-whitelisted user or not
Now in the test folder create a MerkleProof.js file and add the following there:
```js
const { expect } = require("chai");
const { formatEther } = require("ethers");
const { ethers } = require("hardhat");
describe("MerkleProof", function () {
it("only whitelisted address can call function", async function () {
let owner, addr1, addr2;
let merkleTreeContract;
let rootHash =
"0x12014c768bd10562acd224ac6fb749402c37722fab384a6aecc8f91aa7dc51cf";
// async function setup() {
[owner, addr1, addr2] = await ethers.getSigners();
const MerkleTree = await ethers.getContractFactory("MerkleProofContract");
merkleTreeContract = await MerkleTree.deploy(rootHash);
console.log(merkleTreeContract.address);
// }
// beforeEach(async function () {
// await setup();
// });
const user = addr1;
const proof = [
"0xe9707d0e6171f728f7473c24cc0432a9b07eaaf1efed6a137a4a8c12c79552d9",
"0x1ebaa930b8e9130423c183bf38b0564b0103180b7dad301013b18e59880541ae",
];
console.log(
`user address: ${user.address} and proof: ${proof} and rootHash: ${rootHash}`
);
expect(
await merkleTreeContract.connect(user).onlyWhitelisted(proof)
).to.equal(5);
await expect(
merkleTreeContract.connect(addr2).onlyWhitelisted(proof)
).to.be.revertedWith("Not WhiteListed Address");
});
});
```
This test file works as such:
owner, addre1 and addr2 are the first 3 addresses in Hardhat node
deploys the merkle tree contract with the saved root hash
user is addr1, that is the 2nd addess in whiteList.json file. We get the proof from there
-connects to a whitelisted user and calls the function, gets the correct value of 5
-connects with a non-whitelisted user (we did comment out the address number 2 at the very beginning ) and calls the function, is reverted.
Hope you enjoyed it! If you have any corrections or suggestions, please let me know in the comments.
Cheers!
Hello reddit. I have been on the crypto and defi markets for about 4 years. I have finally framed a protocol that I feel has the potential to work in the current markets. I have made a gitbook and thats all i can do on zero budget. I have about a thousand dollars and hiring a dev would not complete it for sure. I am very lost at this moment. I really want to bring my vision to the blockchain but I am tight on budget and i did think of bootstrapping but i need a beta product to convince investors as well. Has anyone had experience hiring a dev on a profit sharing basis? How do i convince them with just a pitch.
Hello everyone, we are developing a dApp in the DeFi field. We have a live prototype on the testnet but we are looking for a Senior Solidity developer capable of taking our dApp to the highest level of quality. The project is well established, with several very important partners, three DAOs, and a VC ready to invest in us. Our community and social media are already active with thousands of followers and organic users.
SKILLS
The ideal candidate must have a deep knowledge of:
-Solidity (+3 years)
-DeFi Common Protocols Architectures & Logic
-Comfortable with Hedera Development Environment (preferably with referenced experience in this ecosystem)
TO DO
The developer will mainly work on the following steps:
-Review, backtest, and upgrade the current Smart Contracts, where there are two errors to correct
-Development of future parts of the project, such as Token development and Governance
SALARY & DEADLINES
We have considered two payment options:
-Milestones (CASH PAYMENT) + Token Allocation + Shares of the protocol's revenues
-Token Allocation + Shares of the protocol's revenues
For deadlines, we are very flexible as this is work to be distributed over several months. The only phase where we need to move faster is the first one (testing and fixing of existing Smart Contracts). For this reason, even if the milestones do not reach a significant economic value considering the seniority we are looking for, it can also be a side-hustler or a long-term investment for the candidate. The candidate should attend a technical interview before joining. Feel free to DM me here if you are interested.
Hey All,
I am the founder of InternetMoney.io - a Metamask Alternative with its own unique and innovative features.
We have been growing rapidly and as such, are looking to expand our development team! Currently available on Android, iOS and Chrome with over 36,000 downloads and an active community, your work will not go unnoticed!
Please see more details in this tweet: Here is the link to the tweet
If you have questions, feel free to drop a comment! I will be monitoring.
EDIT: Per request, we are offering $85-$140 per hour based upon experience and skill level.
Howdy! I'm from Toposware, a company developing a zero-knowledge ecosystem called Topos, on which blockchains can be built. It allows for seamless and secure interoperability between networks built upon it. We are currently in testnet and providing a micro grant program for folks to get an opportunity to tinker and build. Here is a link to the GitHub page for the grant program.
The total budget for the grant program is $10k.
Here is a timeline for the program:
The grant program is judged and voted on by a community panel in our Discord. If you have any questions, please let me know.
Hello fellow Redittors,
My name is Mutahi019. I'm a creative arts designer with high motivation, initiative, and years of experience in graphic design. I am available for hire immediately.
I deliver the best design for the following software,
Adobe Illustrator- All print designs but not limited to, posters, business cards, social media posters, restaurant menus, stickers and product labels, resume design
Adobe Photoshop- Product mock-ups, T-shirts and merchandise mockups,
Adobe In Design- Company profiles, magazine design and layouts, book and document formatting, interactive PDF, annual reports
Figma- web interfaces, mobile app wireframes. Generally UI/UX designs.
My recent project involved designing labels for a peanut butter product newly launched. With a background in Fine Arts, I pay attention to colour psychology, typography, design layout, and set branding guidelines.
Here is my portfolio on Behance. Hit me up via Reddit chat or PM. Let's do this!
We are planning to develop a DEX aggregator which consists of
We plan to build them in order as listed above.
Currently we are looking for someone who wants to build something in Web3 with a team. We are currently a team of 3 consisting of 1 developer and 2 marketers at the moment.
Our combined backgrounds have:
We need someone who is in the crypto space and know the current culture and trends. It is difficult to keep up with the current trends if you are not in it at the moment.
Of course we would prefer the applicant to be okay with an equity payout. However if you do require a bit of payment for creating the project, we can discuss.
However just to note that this would not be salary based in the long run. We hope to find another team member to take on the project just like it belongs to them as well.
Do reach out to me here or on discord if you are interested / want to discuss further: branzed
Sigma interpreter:
Github: https://github.com/ScorexFoundation/sigmastate-interpreterList of Bounties: https://github.com/kushti/bounties/blob/master/data/sigma.csv
Ergo node (official reference protocol client):
Github: https://github.com/ergoplatform/ergoList of Bounties: https://github.com/kushti/bounties/blob/master/data/node.csv
Ergo's Authenticated AvlTree+ implementation in Rust:
Github: https://github.com/ergoplatform/ergo_avltree_rustList of Bounties: https://github.com/kushti/bounties/blob/master/data/avltree-rust.csv
ChainCash Contracts:
Github: https://github.com/ChainCashLabs/chaincashList of Bounties: https://github.com/kushti/bounties/blob/master/data/chaincash-c
ChainCash Server:
Github: https://github.com/ChainCashLabs/chaincash-rsList of Bounties: https://github.com/kushti/bounties/blob/master/data/chaincash-server.csv
Some of my services ;
Pancakeswap, Goose, Pantherswap, Uniswap, Sushiswap, Peatio, Bitshares clones or forks with custom functionalities.
Smart contract development (Any chain) and Blockchain development (Pivx, Bitcoin, ETH or other blockchain forks)
Web design & development (Landing pages, token sale dashboards, scripts, arbitrage or discord bots)
Mobile app development (crypto wallets, dex, NFT games, gambling & more)
Marketing & SEO - apart from development i have a strong background in marketing and SEO as well.
NFT marketplace or Game development (Axie infinity, Raribles & more)
My past work experience
I'm a highly disciplined and versatile developer flexible and passionate in team environments. On-time or ahead of schedule delivery, high quality and clean code. If you are looking for a reliable developer - Look no more.
Telegram : https://t.me/thisistheway001
--- Portfolio, LinkedIN and github available upon request ---
Hello fellow Redittors,
My name is Mutahi019. I'm a creative arts designer with high motivation, With a background in Fine Arts, I pay attention to color psychology, typography, design layout, and set branding guidelines.th respect to the following software,
Adobe Illustrator- All print designs but not limited to, posters, business cards, social media posters, restaurant menus, stickers and product labels, resume design
Adobe Photoshop- Product mock-ups, T-shirts and merchandise mockups,
Adobe In Design- Company profiles, magazine design and layouts, book and document formatting, interactive PDF, annual reports
Figma- web interfaces, mobile app wireframes. Generally UI/UX designs.
My recent project involved designing a landing page concept for Wagerboard. With a background in Fine Arts, I pay attention to colour psychology, typography, design layout, and set branding guidelines.
Here is my portfolio on Behance and a drive link for reference. Hit me up via Reddit chat or PM. Let's do this!
Hey all! Just wanted to share the latest Solidity jobs that I saw this week. Hope this will be helpful for everyone who's looking for new opportunities.
Site Reliability Engineer at Cooperative Kleros. This job engages with the development team to ensure the safety and reliability of Kleros’ software. Main tasks include AWS infrastructure maintenance, developing software with Node, Python, Go, or a language of your choice, and blockchain interaction. A keen interest in blockchain plus the ability to handle staking nodes are must-haves for this post. Apply here
Senior Solidity Engineer at Frax Finance. In this role, you’ll be working flexibly and autonomously to write and test Solidity contracts on EVM-compatible chains, possibly while using Foundry or Hardhat. It would be great if you’re comfortable with front-end development and APIs. The team is global, and they offer a competitive salary package. Apply here
Smart Contract / Solidity Engineer - CCIP at Chainlink Labs. Looking for engineers who are immersed in the blockchain ecosystem, have deployed smart contracts to Ethereum or an EVM compatible chain, and can lead long-term projects. The scope of work is broad, covering everything from the technical to operational and beyond. Apply here
Blockchain Infrastructure Developer at ReDeFi Regulated Decentralised Finance Ltd. If you're proficient in Rust, Solidity, Go, and C++, and have 2+ years of blockchain infrastructure development experience, check out this opportunity. The role includes developing, testing, and launching blockchain-based solutions and maintaining current infrastructure. Familiarity with DEX protocols can give you an edge. Apply here
Senior Software Engineer - Cross Chain Interoperability Protocol at Chainlink Labs. This job requires strong development experience and a distinct interest in blockchain and Web 3.0 technologies. Tasks include designing and implementing new features and ensuring the security of the CCIP product, among others. They're looking for experienced developers and technical leads. Apply here
Let me know if these are useful. Thanks fam!
Hey all! Just wanted to share the latest Solidity jobs that I saw this week. Hope this will be helpful for everyone who's looking for new opportunities.
Site Reliability Engineer at Cooperative Kleros. Are you enthusiastic about decentralization and building new systems of governance? If you are, then this role at Cooperative Kleros might be right up your alley - working on bug-free, seamless open source code for dispute resolution. There's a range of responsibilities from development using Node, Python, Go and AWS infrastructure maintenance. Apply here
Smart Contract / Solidity Engineer - CCIP at Chainlink Labs. Chainlink Labs is seeking an individual focused on what truly matters and can deliver excellent results with their engineering background. The candidate should be well versed in myriads of web3 projects and exhibit rapid evolution skills. Your knowledge in chainlink services will be an asset to the company. Apply here
CTO - Co-founder at Stealth Project. This job is perfect for a full-stack developer who is ready for the challenges new ventures bring to the table. If agile, quick execution, and rapid innovation are your forte, then this opportunity is for you. The role also offers a large revenue share and significant equity. Apply here
Head of Engineering at Boson Protocol. If leveraging bleeding-edge technology and industry-leading development practices appeals to you, this role at Boson Protocol is for you. Boson Protocol is looking for a Head of Engineering who can lead a team of engineers to navigate the evolving blockchain space. Apply here
Site Reliability Engineer at Aragon. Aragon is seeking a Site Reliability Engineer capable of managing CI/CD pipelines, ensuring optimal performance, and setting up monitoring tools for proactive issue identification. If you're looking for a remote, flexible role with a high degree of autonomy, this position may be for you. Apply here
Let me know if these are useful. Thanks fam!
Hey all! Just wanted to share the latest Solidity jobs that I saw this week. Hope this will be helpful for everyone who's looking for new opportunities.
Senior Web3 Back End Developers (NodeJs & AWS) at Pop Social. You'd be collaborating with cross-functional teams to design and maintain scalable back-end systems using Node.js and AWS. Implement server-side apps, integrate blockchain tech and develop APIs. An amazing opportunity if you have a firm grip on Node.js, AWS, and blockchain technologies. Apply here
CTO - Co-founder at Stealth Project. Step into this exciting new venture as a co-founder with substantial revenue sharing and allocations. Having a strong background in both front-end and back-end development and proficiency in solidity are a must. Apply here
Head of Engineering at Boson Protocol. Here's your chance to lead a growing engineering team, closely work with Product, and contribute to the evolution of Boson Protocol. 6 years+ experience in building complex systems and a deep understanding of Ethereum are required. Apply here
Site Reliability Engineer at Aragon. Oversee our CI/CD pipelines, optimize backend services, and set up monitoring tools in this role. Minimum requirements include 3+ years in an SRE or similar role, practical experience with Kubernetes, and an understanding of decentralized systems. Apply here
Solidity Engineer at ION Group. You'll be responsible for designing, building and maintaining smart contracts on various blockchain platforms with a special focus on Ethereum. Proficiency in Solidity language and knowledge of Ethereum network are essential for this role. Apply here
Let me know if these are useful. Thanks fam!
Hi everyone.
We are looking for a developer that can undertake this task:
We have a dapp that uses "@web3-react/core": "^6.0.9". You will be responsible for migrating it to v 8.2.0, add support to wallet-connect v2 (currently v1) and ensure that everything works smoothly. On successful delivery of the job, there is the possibility to take on a larger contract to do the same job, for a different dapp.
Skills required: - frontend work with web3 - web3js - understanding the different between web3-react v6 and v8
I recommend reading this: https://docs.walletconnect.com/advanced/migration-from-v1.x/dapps#web3-react
Feel free to DM me your details/github/experience or leave a message here.
Hey all! Just wanted to share the latest Solidity jobs that I saw this week. Hope this will be helpful for everyone who's looking for new opportunities.
Senior Web3 Back End Developers (NodeJs & AWS) at Pop Social. This role involves collaborating with cross-functional teams to develop and maintain scalable and reliable back-end systems using Node.js and AWS services. Familiarity with blockchain technologies and Web3 protocols is highly desirable. You'll also participate in code reviews and maintain code quality standards. Apply here
CTO - Co-founder at Stealth Project. They are seeking a full-stack developer who embodies skills, hands-on expertise, agility, and ambition. Proficiency in Solidity is essential for working on blockchain-related projects. The role offers substantial revenue sharing and equity participation. Apply here
Head of Engineering at Boson Protocol. The role requires you to lead a small team of engineers in building applications powered by blockchain. Ideal candidates must have a keen interest in blockchain technologies with proven experience. The position is remote and open for long-term relations. Apply here
Site Reliability Engineer at Aragon. The responsibilities include leading the management of CI/CD pipelines, maintaining backend services, and setting up monitoring tools. Candidates should have experience in managing Linux and cloud providers, understanding how to work in an agile environment, and a general understanding of Solidity. Apply here
Solidity Engineer at ION Group. As a Solidity Engineer, you'll design, build and maintain smart contracts on various blockchain platforms. There is a focus on unit and integration tests. Strong knowledge of Ethereum network, transactions, and tools is a requirement. Apply here
Let me know if these are useful. Thanks fam!