Senior Solidity Engineer for Web3 SocialFi

Tokalent; Hong Kong; On-site; HKD 900,000 - 1,200,000; Full time

Job summary

Tokalent is seeking a Senior Smart Contract Engineer to design, implement and test secure Ethereum contracts powering our SocialFi initiatives. You will work with PMs and other engineers to translate business logic into robust Solidity code and automated tests.

You should have deep ERC standards knowledge, DeFi staking experience, and familiarity with modern JS tooling. This is a hands-on role focused on security, auditability and scalable deployment.

Qualifications

• Solid production experience building Solidity contracts.
• Strong knowledge of ERC standards and DeFi staking.
• Experience with testing frameworks and CI processes.
• Excellent English communication and collaborative skills.

Responsibilities

• Design and implement resilient, gas-efficient smart contracts on Ethereum.
• Lead contract development with PMs and engineers.
• Develop blockchain backends and tooling to support operations.
• Collaborate with frontend/backend teams integrating smart contracts.
• Stay updated on security best practices and industry standards.

Skills

Solidity

Testing frameworks

Maintenance of contracts

DeFi

Staking

ERC20

ERC721

ERC1155

ERC998

ERC777

Reentrancy

Migrations

Upgradeability

JavaScript frameworks

Secure coding

Communication

Documentation

English

Unit testing

CI/CD

Education

Bachelor's degree in Computer Science or related field

Job description

Tokalent is seeking a Senior Smart Contract Engineer to design, implement and test secure Ethereum contracts powering our SocialFi initiatives. You will work with PMs and other engineers to translate business logic into robust Solidity code and automated tests.

You should have deep ERC standards knowledge, DeFi staking experience, and familiarity with modern JS tooling. This is a hands-on role focused on security, auditability and scalable deployment.