I need a seasoned PHP developer who can take full ownership of the “communication handle” that routes every email, chat message, and future notification our product sends or receives. The current codebase is up and running in production, yet it’s a mix of legacy scripts and newer components that now demand a unified, modern structure. Here’s the flow I have in mind: you begin with a brief architectural review so we agree on priorities, then move into iterative delivery—stabilising existing endpoints, refactoring brittle areas, and adding new features behind solid automated tests. A queue-based dispatch layer is already sketched out; you will decide whether we keep it or re-implement. If you enjoy front-end work, there’s also room to polish the small dashboard that monitors message flow. Deliverables • Review report and action plan • Refactored, well-documented PHP classes • New features merged with passing unit and integration tests • Deployment notes plus minimal monitoring hooks Acceptance criteria • All critical message paths (email and in-app chat) deliver within 2 s p95 latency in staging and pass functional tests. The repo sits on GitHub; we work with feature branches, pull requests, and GitHub Actions CI. Mention a project where you overhauled a live messaging or notification component so I know you’ve read this far.