# Shibaji Debnath
> Chief Technology Officer | Lead Technical Consultant | Senior Full-Stack & System Architect

- Location: Kolkata, West Bengal, India
- Website: https://shibajidebnath.com
- Inquiries: imshibaji@gmail.com
- Experience: 15+ years across enterprise backends, mobile engineering, and AI automation.
- Previous Roles: Software Developer at Google (Hyderabad), Lead Consultant at SDN Technology, Associate Founder at LARNR.

## Core Specializations

### 1. Backend & Distributed Systems Architecture
- Frameworks: NestJS, Node.js, PHP (Laravel, LeafPHP, ExpressJS, AdonisJS).
- Protocols & Design: Microservices, RESTful APIs, GraphQL, Domain-Driven Design (DDD), Event-Driven Architecture.
- High Concurrency: PostgreSQL horizontal partitioning, Redis Streams, Kafka messaging, query execution optimization.

### 2. Agentic AI & Applied LLMs
- Model Context Protocol: Development of custom MCP and ACP servers exposing database/telemetry tools to agents.
- Automations: Workflow engines with n8n and OpenAI/Anthropic APIs.
- Search & Knowledge: pgvector embeddings, hybrid RAG pipelines, PyTorch integration.

### 3. Frontend & Cross-Platform Mobile
- Web: TypeScript, Astro.js (Islands Architecture), React, Angular, Tailwind CSS v4.
- Native Mobile: Flutter, React Native (Offline-first data sync engines with SQLite).

## Verified Production Impact
- Scaled FinTech ledger microservices to 80,000 req/sec at 62ms p99 latency using NestJS and Redis Streams.
- Deconstructed 10-year enterprise PHP monolith into decoupled AWS EKS containerized services, slashing cloud bills by 48%.
- Built production MCP servers reducing infrastructure triage time by 72%.
- Trained and mentored 1,000+ software engineers across system design, microservices, and backend best practices.

## Engagement Models
- Fractional CTO & Technology Roadmapping
- System Design & Microservices Consulting
- Performance Optimization & Database Audits
- Hands-on Full-Stack Architecture