Ebgueny
PJ
Architecting the unseen.
Full Stack Engineer — Multi-Tenant architectures, Offline-First systems, and Agentic AI orchestration for scalable ecosystems.
Philosophy
The frontend is the vehicle.
The backend is the destination.
I architect digital ecosystems that abstract real-world complexity. True scale isn't just about handling raw traffic; it's about building resilient, offline-capable infrastructures that empower businesses to operate without friction. The visual craft is proof that the engineering standard extends to every layer of the stack.
Master and tenant databases with runtime dependency injection based on subdomain resolution. Every tenant's financial and inventory data is hermetically isolated via dedicated PostgreSQL instances managed through a pooled DataSource Map.
Point of Sale built on Next.js + Dexie.js (IndexedDB) capable of processing sales without connectivity. A robust sync-queue reconciles transactions, cash register sessions, and inventory automatically when the connection is restored.
Heavy processes decoupled via BullMQ workers: async report generation (PDF/Excel) uploaded to S3, automated Stripe billing, and multichannel notifications (WhatsApp via Meta Cloud API + Email) processed in background without blocking the event loop.
Flagship Project: Nivo
One Monorepo. Shared Truth.
The architecture behind the metrics above. To scale without friction, Nivo is designed as a modular ecosystem: five frontend applications and a NestJS backend sharing types, database schemas, and UI through unified packages — all orchestrated in a single Turborepo.
Orchestrated with Turborepo — parallel task pipelines with incremental build caching, wired into GitHub Actions CI.