Job Description: Test new features end to end across frontend, backend, APIs, and third-party integrations Run regression testing before releases and smoke testing in production after each release Validate business and technical requirements with Product and Engineering before development begins Investigate defects using logs, API responses, and network traffic Write clear, reproducible bug reports Act as first-line support for Monetization, Finance, and Product Tech requests Reproduce issues, assess severity, and escalate with factual information Maintain test documentation in TestRail, Jira, and Confluence Collaborate with the Automation QA team to determine which cases to automate Own Platform functionality quality in a startup environment with short iterations and frequent releases Identify root causes, communicate clearly, and help improve QA processes Requirements: 4+ years of manual QA of web applications, including frontend, backend, and API Risk-based test design skills API testing with Postman / Charles and Swagger / OpenAPI Root cause investigation using Chrome DevTools, including HAR, network, storage, and logs Hands-on experience with feature, regression, and production smoke testing throughout the full release cycle Daily use of AI tools such as Claude, Cursor, or similar, with critical review of outputs Experience in a product company or startup with frequent releases Written English sufficient for documentation and bug reports Ownership and transparent communication; ability to flag risks and delays early Nice to have: payments and subscriptions testing, including Chargebee, Adapty, Payrails, trials, taxes, Apple Pay, and Google Pay Nice to have: web funnels and A/B experiments Nice to have: analytics event validation with Google Analytics, Meta Pixel, and GTM dataLayer Nice to have: Datadog / Grafana Nice to have: testing AI-powered features Nice to have: basic Playwright / TypeScript Benefits: Fully remote AI-first company with AI integrated centrally into company work No micromanagement High engineering standards