Building Cayura — a multi-tenant enterprise SaaS platform engineered for the Australian National Disability Insurance Scheme (NDIS) disability-care sector, driving architecture across 38 domain-driven modules, secure multi-tenant isolation, and automated cloud deployments.

• Architected database-level multi-tenancy using PostgreSQL Row-Level Security (RLS) with dynamic per-request organization scoping, ensuring ironclad data isolation across tenants.
• Designed and shipped 38 modular domain services using NestJS, Next.js, and TypeScript with Prisma ORM and Redis caching (managing participant plans, staff rostering, and compliance audits).
• Engineered a defense-in-depth security model featuring JWT access/refresh token rotation, NestJS route guards, and fine-grained Role-Based Access Control (RBAC) synchronized with PostgreSQL RLS.
• Orchestrated containerized production releases on Linux VPS using Docker Compose, Git workflows, and Caddy reverse proxy with automated SSL/TLS certificate provisioning.
• Conducted deep-dive technical benchmarks across 15+ competitor platforms to architect scalable PRDs and technical blueprints aligned with Australian regulatory standards.

Spearheaded end-to-end engineering of enterprise web applications, high-throughput e-commerce systems, and distributed real-time platforms across full development lifecycles.

• Architected high-concurrency e-commerce backends handling spike traffic, optimizing database throughput via advanced PostgreSQL indexing, query tuning, and Redis caching layers.
• Engineered modular RESTful microservices with NestJS, Node.js, and TypeScript, decoupling monolithic bottlenecks to significantly lower API response latency.
• Constructed responsive, accessible frontends and merchant management portals using React, Next.js, TypeScript, and Tailwind CSS with real-time WebSocket state synchronization.
• Strengthened system security via stateless JWT authentication protocols and established containerized Docker environments fronted by NGINX reverse proxies on production Linux servers.
• Fostered engineering excellence by conducting rigorous code reviews, expanding automated integration test suites, and mentoring junior engineers in clean code and Git practices.