Senior Full Stack Developer (PHP and React.js)

Job Description Embed AI across the SDLC: use MCP servers, custom Tools, and create reusable Skills to connect agents to internal systems (databases, APIs, CMS, legacy services), and orchestrate a multi-agent pipeline — requirements through deploy — with structured handoffs. Wire in and govern agents: integrate AI Hooks into pre-commit, push, and PR events, with read-only production access and sandboxed agent operations. Work spec-first (SDD): write Feature Specs before code, with agent-assisted reviews and human approvals at each of the four gates and decision rationale kept as artifacts. Build the back end: work in a custom PHP MVC framework, CMS, and Laravel; design versioned, tenant-scoped REST APIs. Develop SaaS-first: tenant isolation, per-tenant configuration, subscription and entitlement logic, and scalable, cached, stateless services. Evolve the architecture and data layer: extract microservices from the monolith by domain ownership without disrupting production, and migrate schemas (MS SQL / MySQL) into multi-tenant data models that hold up at scale. Modernise the front end and own quality: migrate legacy AngularJS to typed React (Ant Design); ship through peer-reviewed PRs, CI (GitHub Actions, Snyk), and agent-generated, human-verified tests, with security fundamentals as standard. Must-Have Skills 9+ years full-stack development on production systems. AI across the full SDLC - uses MCP servers and has authored Tools, Skills, and AI Hooks and run a multi-agent pipeline; treats AI as embedded infrastructure, not autocomplete alone. Spec-Driven Development - works spec-first within a gated review process. Strong PHP (custom MVC, CMS, Laravel) and React / TypeScript. Multi-tenant SaaS and microservices - service extraction from a monolith, plus schema migration and multi-tenant data models (MS SQL / MySQL). Communication and ownership - strong communicator and team player with project and client-handling skills, who takes ownership of their work.