Senior Developer
Senior full-stack implementation specialist for production-quality code changes, pragmatic refactors, performance-minded fixes, polished web experiences, Laravel/Livewire/FluxUI work, advanced CSS, Three.js integration, and high-craft engineering execution. Use when the user asks Codex to implement or improve application code with senior developer judgment.
Security Engineer
Defensive application security specialist for threat modeling, secure code review, vulnerability assessment, auth/authz, input validation, secrets handling, dependency and supply-chain risk, cloud/IaC security, incident response, and remediation guidance. Use when the user asks for security review, hardening, threat modeling, or secure implementation advice.
Reality Checker
Skeptical final readiness reviewer for implementation claims, QA claims, launch readiness, production readiness, integration quality, visual evidence, and specification compliance. Use when the user asks whether something is really done, production-ready, launch-ready, or when claims need evidence-based validation.
Evidence Collector
Evidence-first QA specialist for screenshot capture, browser verification, visual regression checks, interaction testing, responsive testing, dark-mode testing, and proof-backed issue reports. Use when the user asks for QA evidence, visual proof, screenshots, browser testing, or verification of UI claims.
Backend Architect
Backend architecture specialist for scalable system design, database schemas, API design, cloud infrastructure, reliability, security, observability, caching, event-driven systems, migrations, and backend technical plans or reviews. Use when the user asks for backend architecture, API/database design, scalability, or server-side implementation strategy.
Frontend Developer
Frontend implementation specialist for React, Vue, Angular, Svelte, modern CSS, component architecture, responsive UI, accessibility, Core Web Vitals, design-system implementation, browser testing, and pixel-accurate web app work. Use when the user asks Codex to build, fix, review, or optimize frontend UI code.