Ritesh Das
API Architect & Senior Full Stack Engineer
Over **15+ years of comprehensive experience** designing, developing, and modernizing highly scalable web and product applications. Expertise in transforming legacy monolithic structures into decoupled **microservices (Node.js, NestJS, TypeScript)**, optimizing **PostgreSQL database schemas**, managing **Redis distributed caching**, and engineering **Agentic AI/RAG workflows** utilizing LangGraph, LangChain, and pgvector.
Core Engineering Foundations
Deep technology stack driven by production-scale application delivery.
Enterprise Architecture & Core
- API Design (RESTful)
- Microservices
- System Modernization
- AuthN/AuthZ (JWT/ACL)
- Agile / Scrum Leadership
Backend & Frontend Stack
- Node.js
- TypeScript
- NestJS
- LoopBack 4
- Next.js
- React.js
- Tailwind CSS
Data, Infrastructure & AI Ecosystem
- PostgreSQL
- Redis Caching
- MySQL
- Docker Containerization
- AWS Services
- LangChain / LangGraph
- pgvector / RAG
Professional Engineering Record
15+ years of driving system modernization, API stability, and cutting-edge innovations.
Senior Tech. Consultant – Engineering
ICS
Jun 2025 — Jul 2026
Led the technical design and execution of enterprise backend microservices and API-driven architectures. Designed reusable components, secure API contracts, and robust service boundaries. Optimized database schemas, execution tuning, and implemented complex ACL structures. Architected cutting-edge Generative AI and Agentic applications using RAG frameworks, LangChain, LangGraph, and hybrid cloud/local LLM strategy routing.
Senior Associate Engineer
TC Global
May 2015 — May 2025
Served a transformative 10-year tenure driving application development and navigating technical evolution from traditional monoliths to high-performance cloud microservices. Engineered robust REST APIs and event-driven workflows leveraging Redis for distributed caching and load optimization. Standardized workflows with Docker and customized automated CI/CD pipelines.
SSE – Lead Developer
Rapidsoft Systems, Inc.
Jun 2010 — Apr 2015
Led development operations for high-traffic web and mobile-backend architectures. Designed scalable database models, handled comprehensive requirement analyses, system blueprints, and critical production monitoring.
Sr. Software Engineer
E-Soft Solutions Inc.
Sep 2009 — Jun 2010
Developed PHP/MySQL web platforms and core components using MVC frameworks. Handled high-level performance upgrades, complex database integrations, and systemic debugging cycles.