| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Bondex | Remote |
| |||
OpenZeppelin | Remote | $105k - $180k | |||
Ephemera | Remote | $235k - $275k | |||
SMASH | San Jose, CA, United States | $96k - $112k | |||
| Learn job-ready web3 skills on your schedule with 1-on-1 support & get a job, or your money back. | | by Metana Bootcamp Info | |||
SMASH | San Jose, CA, United States | $72k - $100k | |||
OpenZeppelin | Remote |
| |||
OpenZeppelin | Remote | $105k - $228k | |||
EPS Consultants | Manila, Philippines | $45k - $72k | |||
Eden Holdings Philippines Inc. | Manila, Philippines | $62k - $77k | |||
Lazer | Canada | $87k - $93k | |||
EPS Consultants | Manila, Philippines | $62k - $77k | |||
Trilitech | London, United Kingdom | $98k - $108k | |||
OpenZeppelin | Remote | $58k - $100k | |||
OpenZeppelin | Remote | $76k - $84k | |||
OpenZeppelin | Remote | $88k - $168k |
This job is closed
Overview
We're seeking a Senior Blockchain Developer to lead the technical implementation of cutting-edge Web3 integrations across multiple blockchain ecosystems. You'll be responsible for architecting and developing complex integrations with DID providers, Layer 2 solutions, educational platforms, and DeFi protocols while building scalable on-chain identity and reputation systems.
This role is perfect for an experienced blockchain developer who thrives on solving complex multi-chain challenges, implementing innovative Web3 protocols, and driving the future of decentralized professional networking.
Candidate requirements
- 4+ years of blockchain development experience with production deployments
- Strong Solidity development skills with experience in complex smart contract architecture
- Multi-chain development experience (Ethereum, Base, Solana, Polygon)
- Deep understanding of EVM and blockchain fundamentals
- Experience with Layer 2 solutions (Optimism, Arbitrum, Base)
- Advanced knowledge of smart contract security best practices and audit processes
- Experience with OpenZeppelin contracts and established patterns
- Proficiency in testing frameworks (Hardhat, Foundry, Truffle)
- Understanding of gas optimization techniques and contract upgradeability
- Experience with multi-signature wallets and timelock mechanisms
- Extensive experience with Web3.js/Ethers.js and blockchain API integration
- Wallet integration expertise (MetaMask, WalletConnect, Phantom, Rainbow)
- Experience with IPFS/Arweave for decentralized storage
- Knowledge of GraphQL for blockchain data querying (The Graph Protocol)
- RESTful API development for Web3 applications
- Understanding of DeFi protocols (Uniswap, Aave, Compound)
- Experience with token standards (ERC-20, ERC-721, ERC-1155, SPL tokens)
- Understanding of tokenomics and mechanism design
- Experience with stablecoin integration and payment rails
Desirable
- Experience with zero-knowledge proofs (zk-SNARKs, zk-STARKs)
- Knowledge of account abstraction (ERC-4337) and gasless transactions
- Familiarity with MEV protection and transaction optimization
Job responsibilities
- Design and develop smart contracts for identity verification, attestation systems, and reputation scoring
- Implement cross-chain bridges and multi-chain wallet integration
- Build escrow systems and payment processing for freelancer marketplace
- Develop tokenized bounty and referral systems with automated distributions
- Integrate with Base L2, Solana, and other blockchain networks
- Implement Layer 2 scaling solutions and optimize gas costs
- Build cross-chain attestation services and reputation portability
- Develop multi-signature wallet systems and account abstraction
- Implement zero-knowledge proof verification systems
- Build privacy-preserving authentication mechanisms
- Develop on-chain credential verification and attestation systems
- Integrate stablecoin payment systems (USD1, USDC, etc.)
- Implement yield farming and staking mechanisms
What is OpenZeppelin?
OpenZeppelin is a widely-used open-source library of reusable smart contracts for building decentralized applications (dApps) on various blockchain platforms, including Ethereum, Binance Smart Chain, and others
The library provides a set of secure and audited building blocks, such as ERC-20 and ERC-721 tokens, multi-sig wallets, access control, and more, that developers can use to create smart contracts quickly and easily without worrying about common security pitfalls
OpenZeppelin is used for building secure and audited smart contracts on various blockchain platforms, such as Ethereum and Binance Smart Chain
The library provides a set of pre-built and reusable smart contract modules that can be easily integrated into decentralized applications (dApps)
These modules include standard tokens, like ERC-20 and ERC-721, as well as modules for access control, voting, crowdsales, and more
OpenZeppelin is used for building secure and audited smart contracts on various blockchain platforms, such as Ethereum and Binance Smart Chain
The library provides a set of pre-built and reusable smart contract modules that can be easily integrated into decentralized applications (dApps)
These modules include standard tokens, like ERC-20 and ERC-721, as well as modules for access control, voting, crowdsales, and more
OpenZeppelin is commonly used by developers to create secure and reliable smart contracts for a variety of use cases, including decentralized finance (DeFi), non-fungible tokens (NFTs), and other blockchain-based applications
The library is designed to simplify the development process by providing well-audited and tested code that can be easily customized to suit specific needs.