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| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Belmont Lavan | United States | $54k - $87k | |||
Belmont Lavan Ltd | United States | $54k - $87k | |||
Flourish Health | United States | $60k - $120k | |||
Crossmint | Spain | $122k - $150k | |||
| Learn job-ready web3 skills on your schedule with 1-on-1 support & get a job, or your money back. | | by Metana Bootcamp Info | |||
Crossmint | Miami, FL, United States | $87k - $120k | |||
Animoca Brands Limited | Hong Kong, Hong Kong | $72k - $90k | |||
Ironbridge Labs | New York, NY, United States | $87k - $117k | |||
Crossmint | Miami, FL, United States | $87k - $120k | |||
Kontigo (YC S24) | San Francisco, CA, United States | $40k - $120k | |||
CoW DAO | Remote |
| |||
Zora | Remote | $160k - $190k | |||
Zora | Remote | $160k - $190k | |||
GratisFare | Kansas City, MO, United States | $120k - $250k | |||
Elysa | Remote | $110k - $150k | |||
Ethereum Foundation | Remote |
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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