Enphase Energy is seeking a Staff QA Engineer to join their cloud team. This role involves assessing and improving the quality of software products, working closely with product managers and developers throughout the product lifecycle. Responsibilities include owning end-to-end quality, designing high-quality test cases, reviewing team work, and providing feedback. The engineer will add manual and automated tests for APIs, databases, and UI layers, acting as a gatekeeper for product quality. They will also define and execute non-functional tests, debug issues, and drive quality metrics. The role requires analyzing test progress and reporting on system quality daily, improvising test case designs, and working within an agile framework to deliver quality in a fast-paced environment. Identifying integration points and designing tests for them is also key. The ideal candidate will contribute to delivering quality solutions for complex engineering challenges.