Senior Software Development Engineer in Test (SDET) / QA

Senior Software Development Engineer in Test (SDET) / QA

Full-time/Company: Startale Group

Startale is building StartaleApp, a next-generation Web3 application that unifies blockchain and DeFi functionality into a single user experience. The platform integrates multiple blockchain networks, smart contracts, wallets, tokens, and on-chain protocols across frontend, backend, and decentralized systems.

Applicants must be located in Singapore, Tokyo, or within APAC/Asia, EMEA, or the UK.

Responsibilities:

- Design and build the company’s quality engineering platform
- Define testing architecture across unit, integration, contract, API, and end-to-end tests
- Build reusable testing frameworks, shared libraries, fixtures, and developer tooling
- Design and implement AI-assisted QA workflows (test generation, failure analysis, regression detection)
- Integrate automated testing into CI/CD with fast feedback and automated quality gates
- Validate complex Web3/DeFi flows, smart contracts, wallets, token operations and transaction lifecycles
- Develop performance, load, stress and resilience testing for services and Web3 infrastructure

Requirements:

- 5+ years in SDET, Quality Engineering, Test Automation, or Software Engineering roles
- Strong software engineering skills with JavaScript or TypeScript
- Experience designing testing architecture for complex distributed systems
- Built scalable automation frameworks and reusable testing libraries
- Experience with Playwright or Cypress and API testing (REST, JSON-RPC, GraphQL, WebSocket)
- Integrated automated testing into CI/CD and worked with Docker/containerized testing environments
- Experience with performance/load/reliability testing and production observability/debugging

Nice to have:

- Professional experience testing Web3 applications, blockchain infrastructure, or DeFi protocols
- Strong understanding of smart contracts, wallets, tokens, RPCs, and on-chain transaction flows
- Experience with blockchain testing frameworks, local networks, testnets, or smart contract tooling
- Experience designing AI-assisted testing systems and using LLMs for QA workflows
- Experience with Kubernetes and observability platforms (OpenTelemetry, Prometheus, Grafana, Datadog)

Stack:

JavaScript, TypeScript, Playwright, Cypress, REST, JSON-RPC, GraphQL, WebSocket, Docker, Kubernetes, LLMs/AI tools, OpenTelemetry, Prometheus, Grafana, Datadog

📩 Apply