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 |
|---|---|---|---|---|---|
Ghaf Group | Remote |
| |||
Crossmint | United States | $102k - $120k | |||
Crossmint | United States | $105k - $120k | |||
Ergonia | Remote | $147k - $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 | |||
Tether | ZH ZĂĽrich CH | $115k - $138k | |||
Tether | Denmark | $115k - $138k | |||
Tether | London, United Kingdom | $115k - $138k | |||
Tether | Madrid, Spain | $115k - $138k | |||
Tether | Budapest, Hungary | $115k - $138k | |||
Tether | Dublin, Ireland | $115k - $138k | |||
Tether | Mexico | $115k - $138k | |||
Tether | Lisboa, Portugal | $115k - $138k | |||
Tether | Salvador, Brazil | $115k - $138k | |||
Tether | Lima, Peru | $115k - $138k | |||
Tether | Medellin, Colombia | $115k - $138k |
About the Role
We are looking for a highly skilled Senior Smart Contract Developer with a strong background in Solidity, TypeScript, and backend engineering. The ideal candidate will be responsible for designing, building, auditing, and maintaining on-chain logic while also contributing to off-chain services, APIs, and database integrations. This position requires strong communication skills in English, attention to detail, and a passion for debugging and problem solving.
Responsibilities
- Architect, develop, and maintain smart contracts primarily using Solidity
- Design and implement secure and gas-efficient on-chain logic aligned with business and protocol requirements
- Integrate blockchain components with backend services written primarily in TypeScript
- Build, document, and maintain REST and/or GraphQL APIs
- Work with databases (SQL/NoSQL), modeling data and ensuring performance and reliability
- Participate in technical planning, code reviews, audits, and security assessments
- Own debugging and testing end-to-end — on-chain, off-chain, tooling and integrations
- Collaborate closely with founders, engineers, auditors, and product stakeholders
- Maintain accurate and clear English-based technical documentation and communication
- Research and propose improvements, best practices, and new capabilities across the stack
Requirements
- 5+ years of professional software engineering experience
- 3+ years of Solidity development experience
- Strong knowledge of Ethereum ecosystem, ERC standards, wallets, gas optimization, and on-chain patterns
- Proficiency with TypeScript, Node.js and modern backend architectures
- Experience building and consuming APIs (REST, WebSockets, GraphQL)
- Solid understanding of data modeling and databases (PostgreSQL, MySQL, MongoDB, Redis or similar)
- Strong testing mindset (Hardhat, Foundry, Jest or similar)
- Excellent debugging skills and passion for deep problem investigation
- Fluent or near-native English communication skills, written and spoken
- Ability to work independently with strong accountability and ownership
- Familiarity with security considerations: reentrancy, flash loans, oracle risks, underflows/overflows, access control, upgradeability, etc.
Nice to Have
- Experience with auditing smart contracts
- Familiarity with Layer 2 and cross-chain patterns
- DevOps familiarity (Docker, CI/CD pipelines, infrastructure as code)
Â