Senior Blockchain Quality Engineer - Automation & E2E

Hyphen Connect Limited; Hong Kong; On-site; HKD 420,000 - 640,000; Full time

Job summary

Hyphen Connect Limited is seeking an experienced SDET to own QA across its blockchain-centric infrastructure and product applications. The role focuses on testing protocols, APIs, wallets, and on-chain interactions, with strong emphasis on automation and robust test design.

The ideal candidate has 5+ years in testing, hands-on API and Web/E2E automation, and deep blockchain knowledge. You will identify risks, drive quality from requirements to release, and collaborate across frontend, backend,

Qualifications

• 5+ years of experience in software testing, test automation, or SDET roles.
• Hands-on API and Web/E2E automation testing.
• Deep understanding of blockchain fundamentals: transactions, blocks, RPC nodes, wallets, signing, and smart contracts.
• Strong test design and debugging skills for distributed/transaction-based systems.
• High ownership to drive product quality from requirements to release.

Responsibilities

• Own QA across core blockchain infrastructure and product applications (network, RPC, web apps, APIs, wallets, smart contracts).
• Design and execute test strategies for protocol and application level scenarios (functional, integration, E2E, regression, compatibility).
• Identify risks in complex transaction/asset flows and edge cases across on-chain/off-chain systems.
• Build and maintain automated testing for APIs, web/E2E flows, RPC interfaces, and on-chain scenarios.
• Investigate issues across blockchain nodes, RPC, smart contracts, frontend/backend services, and third-party integrations.

Skills

Test automation

API testing

Web/E2E automation

Blockchain basics

Test design

Ownership

Tools

Foundry

Hardhat

viem

ethers.js

Web3.py

Job description

Hyphen Connect Limited is seeking an experienced SDET to own QA across its blockchain-centric infrastructure and product applications. The role focuses on testing protocols, APIs, wallets, and on-chain interactions, with strong emphasis on automation and robust test design.

The ideal candidate has 5+ years in testing, hands-on API and Web/E2E automation, and deep blockchain knowledge. You will identify risks, drive quality from requirements to release, and collaborate across frontend, backend,