Openzeppelin Web3 Jobs in North America
73 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 web3 py web3js zero knowledge
| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Belmont Lavan | United States | $54k - $87k | |||
Belmont Lavan Ltd | United States | $54k - $87k | |||
Odiin. | San Francisco, CA, United States | $98k - $100k | |||
Kraken | United States | $127k - $203k | |||
| 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 | $96k - $112k | |||
SMASH | San Jose, CA, United States | $72k - $100k | |||
Lazer | Canada | $87k - $93k | |||
OpenZeppelin | Remote | $88k - $168k | |||
Polar Bear Systems. | United States | $175k - $240k | |||
Fmr | United States | $86k - $150k | |||
NDAX Canada Inc. | Calgary, Canada | $86k - $96k | |||
Seamless Protocol | United States | $72k - $75k | |||
Agora | San Francisco, CA, United States | $105k - $180k | |||
Agora | San Francisco, CA, United States | $54k - $72k | |||
Rome Protocol | Los Angeles, CA, United States | $8000k - $13000k |
Belmont Lavan
$54k - $87k estimated
We are seeking an experienced Blockchain / Web3 Developer who will design, build, test and deploy smart contracts, integrate them with front-end and back-end systems, and ensure high standards of security, performance, and usability. You will collaborate with product, UX, frontend, and backend teams to deliver production-ready features, contribute to architecture decisions, and continuously improve our Web3 stack.
Key Responsibilities
- Design, write, and deploy secure smart contracts
- Implement token standards (ERC-20, ERC-721, ERC-1155) and upgradeable contracts using libraries like OpenZeppelin
- Optimise contracts for gas usage, performance, and security, including audits and peer reviews
- Integrate Web3 libraries with front-end applications and wallets
- Develop backend services / APIs that interact with on-chain and off-chain data.
- Work with Layer 2 / roll-ups / scaling solutions, bridges, and/or cross-chain integrations where required
- Write automated tests, maintain CI/CD pipelines, and ensure robust coverage and code quality
- Maintain clear technical documentation, and mentor more junior engineers
- 5 - 8+ years experience in blockchain / Web3 development
- Strong Solidity skills; experience with EVM chains; familiarity with non-EVM is desirable
- Proficiency in Web3 tools: Hardhat, Truffle, Foundry, etc.
- Experience with front-end technologies (React, Next.js )and backend
- Good grasp of REST / GraphQL APIs, database work (SQL / NoSQL), and decentralised storage
- Solid understanding of Web3 security best practices
- Ability to work in an agile, collaborative team; good communication skills in English
- Experience with gas-efficient contract design and Layer-2 roll-ups
- Prior exposure to zero-knowledge proofs, account abstraction, or decentralised identity (DID) systems
- Open source contributions or code samples / portfolio of deployed smart contracts or projects
- Experience in marketplace / escrow / auction mechanics