Engineer high-fidelity, high-resilience browser automations that operate seamlessly under real-world constraints, security layers, and dynamic UIs. This is a role for a white-hat hacker who deeply understands how browsers work, how the web defends itself, and how to build automations that behave indistinguishably from humans, all within authorized, compliant frameworks. Architect and implement real-world browser automation pipelines using Playwright (preferred) or Puppeteer, with custom extensions where needed. Engineer interactions across dynamic, JS-heavy frontends for authorized agentic workflows. Build systems that understand and respect client-side integrity checks (JS challenges, CSPs, headless detection, fingerprinting) while operating within permitted boundaries. Analyze and emulate authentic user behaviors (input timing, mouse movement, scroll patterns) for legitimate automation use cases. Manage complex authorized sessions: handle auth flows, tokens, cookies, WebStorage for permitted access patterns. Operate at the network and TLS layer: configure proxies, manage headers, optimize connection handling for compliant high-volume operations. Build systems for monitoring and debugging automation stability across changing frontends. Reverse engineer complex UIs to build robust extraction layers that adapt to DOM mutations and A/B tests.