Solidity Jobs in San Francisco, California, United States
302 jobs found
web3.career is now part of the Bondex Ecosystem
ai analyst backend bitcoin blockchain community manager crypto cryptography cto customer support dao data science defi design developer relations devops discord economy designer entry level erc erc 20 evm front end full stack gaming ganache golang hardhat intern java javascript layer 2 marketing mobile moderator nft node non tech open source openzeppelin pay in crypto product manager project manager react refi research ruby rust sales smart contract solana solidity truffle web3js zero knowledge
Lead Blockchain Engineer (Web3/Decentralized Identity) - Start Up
Onsite - Bay Area OR Irvine, CA
3-months contract to hire
$70-$75/hr (Equity included)
We are seeking an experienced and innovative Lead Blockchain Engineer to drive the development of a next-generation decentralized ecosystem that integrates identity, payments, and real-world utility. This role is for a highly experienced engineer who is passionate about creating secure, scalable, and human-centric Web3 infrastructure.
Key Responsibilities
- Design, build, and maintain Layer 1 blockchain protocols, smart contracts, and distributed systems that power our core digital ecosystem.
- Develop tokenized payment systems and identity verification flows, ensuring maximum security, usability, and data privacy.
- Implement and audit smart contracts for token utility, governance, and transactional logic across various business sectors.
- Integrate advanced identity verification methods and payment processing into decentralized applications.
- Ensure the security, scalability, and efficiency of all blockchain systems through rigorous testing, code audits, and adherence to industry best practices.
- Partner closely with Product, Engineering, and QA teams to align blockchain development with the overall company roadmap and evolving user needs.
- Mentor junior engineers, contribute to engineering best practices, and help establish high standards for decentralized development.
- Stay ahead of emerging trends in Web3, DeFi, Real-World Asset (RWA) tokenization, and decentralized identity to guide future innovation and strategy.
Required Qualifications
- Education: Bachelor’s or Master’s degree in Computer Science, Cryptography, or a related technical field.
- Experience: 5+ years of hands-on blockchain development experience across protocols, dApps, Layer 1/Layer 2, or DeFi/Web3 projects.
- Proficiency: Expert-level proficiency in Java and Solidity.
- Deep Technical Knowledge: Strong understanding of smart contract security, advanced cryptography, and distributed system design.
- Platform Experience: Experience working with Ethereum, Solana, or other major blockchain platforms.
- Track Record: Proven ability to deliver high-quality, production-grade blockchain systems.
- Work Authorization: Must be legally authorized to work in the United States. (We do not sponsor work visas at this time.)