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The QA Engineer will perform manual and automated testing on web applications and backend services, ensuring software quality, stability, and performance.
About Vast.ai
Vast.ai democratizes and decentralizes AI by running the world’s largest peer-to-peer GPU marketplace. Our platform already powers thousands of training runs and production workloads at a fraction of hyperscaler prices. We’re a fast-growing startup based in Los Angeles and San Francisco, on a mission to organize, optimize, and orient the world’s computation.
About the Role
We’re hiring a QA Engineer to drive both manual and automated testing across our web applications and backend services in a Linux-first environment. This role is central to shipping reliable, high-performance software for a complex, always-on platform. You’ll work closely with Product and Engineering to define quality standards, catch issues early, and help deliver confident releases.
This role is onsite 5 days a week in our Los Angeles (Westwood) office.
What You'll Do- Execute manual, exploratory, and regression testing for web apps and backend services
- Maintain and expand test plans for existing and upcoming features
- Design high-signal test cases and build/extend automation where it matters most
- Validate requirements and ensure releases are stable and defect-free
- Investigate failures, identify root causes, and file clear, actionable tickets
- Partner with Product and Engineering on acceptance criteria and release readiness
- 3+ years hands-on testing of web applications
- Strong knowledge of test methodologies and their corresponding tools
- Experience with writing test plans and test cases for assigned features
- Experience with test automation
- Keen eye for detail
Nice to Have
- Passionate about the future of AI
- API testing with Postman/Newman or similar
- Proficient with Linux
- Experience with load testing tools
- Work 5 days a week from the Vast.ai HQ in Los Angeles (Westwood) in an ambitious, fast-paced, AI-centered startup environment
- Health, dental, vision and life insurance coverage
- Matching 401K
- Pay: $40.00 / hour
Top Skills
Linux
Newman
Postman
Test Automation
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