Senior QA Engineer Performance & Scalability

We're looking for a Senior QA Engineer, Performance & Scalability who doesn't wait to be told what to test. You'll own performance and scalability across our platform, 30 microservices, event-driven flows, and the legacy dependencies that come with a real production system at scale. This isn't a "run a load test before release" role. This is a role where you make performance a first-class concern from day one, where you define the thresholds that decide pass or fail, and where you hold the bar …