01. Layered Backend Architecture
I design robust Express/Node.js backend architectures using the strictly segregated Controller-Service-Repository model. Decoupling routing, business algorithms, and SQL persistence maintains code bases that are stable, understandable, and modular.
02. Bulletproof Data Validation
Unsanitized requests are a security failure. I implement strict validation logic using Zod schemas at request boundaries, paired with transaction containment (atomic units of work) to assure database writes remain consistent and corruption-free.
03. Performance & Core Web Vitals
Unused assets and bloated libraries are slop. I verify bundle sizes, structure relational index optimizations, implement Next.js static optimizations, and push for maximum performance in database operations and user layout metrics alike.
04. Secure JWT & Central Error Containment
I deploy robust authorization pipelines with JWT and custom middleware. Operations utilize centralized async error catching and normalized Error mapping (e.g. `AppError` handlers) to prevent internal stack leakages and maintain system stability.