Senior Software Engineer: Crypto Treasury Tools & APIs

Confidentiel; Hong Kong; On-site; HKD 950,000 - 1,500,000; Full time

Job summary

Confidentiel in Hong Kong seeks a Senior Software Engineer responsible for building internal tools powering trading operations, including token vesting, treasury and asset tracking, and API integrations with CEXs.

You will lead design and implementation of smart-contract based multisender, ensure security and upgradeability, mentor junior engineers, and collaborate with treasury, finance, and operations teams.

Experience with Solidity, Hardhat, ethers.js, and custody APIs is valued.

Qualifications

• Bachelor's degree in Computer Science or related field.
• 6+ years building production software systems with finance data or crypto.
• Proven track record shipping internal tools and dashboards under tight deadlines.
• Hands-on with smart contracts (Solidity) and on-chain tooling.
• Strong API integration experience with exchanges and custody platforms.
• Experience with blockchain libraries and wallet infrastructure.

Responsibilities

• Develop and enhance the internal token vesting platform with multi-token support.
• Integrate with smart contracts, multisigs, and treasury systems for distributions.
• Design and maintain a multisender for batch token transfers.
• Build asset tracker/treasury tool aggregating crypto balances.
• Create robust API integrations with major CEXs and custody providers.
• Lead security, testing, and upgradeability; mentor engineers.

Skills

Production systems

API integration

Solidity

Smart contracts

Security mindset

Mentoring engineers

Crypto / blockchain

Data reconciliation

Education

Bachelors in CS

Tools

ethers.js

web3.js

Hardhat

Foundry

Fireblocks

Coinbase Custody

Job description

Confidentiel in Hong Kong seeks a Senior Software Engineer responsible for building internal tools powering trading operations, including token vesting, treasury and asset tracking, and API integrations with CEXs.

You will lead design and implementation of smart-contract based multisender, ensure security and upgradeability, mentor junior engineers, and collaborate with treasury, finance, and operations teams.

Experience with Solidity, Hardhat, ethers.js, and custody APIs is valued.