QA Engineer

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 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

Minimum Qualifications

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

Benefits

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