QA Tester for B2B SaaS Web App - Full Regression on Staging

We're a SaaS platform (inventory, CRM, e-signature, public websites, billing, and an AI assistant) and need a thorough manual QA tester to run a full end-to-end regression against our staging environment. Around 20 functional areas - signup/login/MFA, multi-step onboarding, inventory & photo management, the full flow, public storefronts, an admin console, Stripe (test mode), and AI propose-approve workflows. We'll provide a detailed test plan and test accounts. You will: Execute the provided test plan across Chrome/Safari/Firefox + mobile (iOS/Android) Verify functionality, validation, responsive layout, empty/error states, and basic accessibility Probe for security/data-isolation issues between tenant accounts Log clear, reproducible bugs (steps, expected vs. actual, severity, screenshots/recordings, console errors) Deliver a coverage checklist + a prioritized bug summary