1 of 1 Permanent OAuth Jobs in South London

observability (e.g., Web Vitals, error tracking). Ensure secure front end practices (XSS/CSRF protection, content security policy, secrets handling, auth flows with OAuth/OIDC/JWT). What we are looking for Solid years building web applications with TypeScript and React; 3+ years in a senior/… streaming + request/response. Testing: Jest/Vitest, React Testing Library, Playwright; strong mock/contract testing. Security: XSS mitigation, CSP, auth flows (OAuth), secure storage, anti phishing UX. CI/CD and feature flagged rollout in regulated environments. Excellent communication; ability to drive consensus across engineering, product ...