Senior Smart Contract Engineer - 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

About the job Senior Smart Contract Engineer - SocialFi

Company Description

Our client is a leading Web3.0 Venture Studio focusing on SocialFi and staking products.They are seeking for Web3.0 Engineers primarily responsible for designing, implementing and testing smart contracts that power their web3 products and apps.

Key Responsibilities

• Understand core business logic and objectives, and implement them with smart contracts.
• Lead the building of smart contracts in collaboration with PMs and other engineers.
• Design, develop and implement different types of resilient, gas-efficient, and secure Smart Contracts on Ethereum. Provide the highest level of reliability with contract codes 100% tested.
• Develop and deploy secure blockchain backends, such as blockchain networks and related tooling and scripts to support the different operational needs.
• Participate in the development and integration of frontend or backend that interacts with smart contracts.
• Keep up with news and trends related to blockchain technology, standards development, best practices and security updates.

Requirements

• Bachelor's degree in Computer Science or a related field, or equivalent work experience.
• Solid experience building out Solidity smart contracts in production.
• Solid experience with Solidity development and testing frameworks.
• Solid experience in maintaining deployed Solidity smart contracts.
• In-depth understanding of current and emerging ERC standards (e.g. ERC20, ERC721, ERC1155, ERC998, ERC777).
• Good understanding in DeFi and how to structure staking products will be preferred
• Unit-Testing and Continuous Integration processes experience.
• Familiar with typical smart contract problems like reentrancy, migrations and upgradeability of immutable systems.
• Familiar with modern JS frameworks.
• Able to write efficient and secure code in a fast-paced environment.
• Effective in explaining, documenting, and bringing others ideas into our solutions.
• Excellent written and oral communication skills in English.