| Frontend | Backend | Data & Cloud |
|---|---|---|
| React.js · Next.js · TypeScript · Tailwind CSS | Node.js · NestJS · REST · gRPC | PostgreSQL · MySQL · Redis · Elasticsearch |
| PWA · SSR · Responsive UI | NATS JetStream · BullMQ · Auth/JWT | Docker · Kubernetes · AWS · GitHub Actions |
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I am a Senior Full-Stack Engineer and Distributed Systems Architect specializing in designing, scaling, and deploying mission-critical web applications, high-concurrency microservices, and autonomous AI agent runtimes. With deep hands-on expertise spanning modern frontend frameworks (React 19, Next.js 15, TypeScript), high-throughput backend services (NestJS, Node.js, gRPC, NATS JetStream), and distributed cloud infrastructure (Kubernetes, ArgoCD GitOps, AWS), I engineer resilient software from database indexing to UI interaction.
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Frontend [React 19 · Next.js 15 · TypeScript] ──▶ Gateway [NestJS · gRPC · REST] ──▶ Streaming [NATS JetStream · Kafka] ──▶ Data [PostgreSQL · ClickHouse · Redis] ──▶ Infra [K8s · ArgoCD · AWS]
The following architectural blueprint outlines the production stack and component boundaries I employ when engineering high-scale, resilient enterprise platforms:
🔍 Architectural Component Breakdown & Design Decisions
| Tier | Technologies & Tools | Core Architecture & Production Patterns |
|---|---|---|
| Client & Frontend | React 19, Next.js 15 (App Router), TypeScript, Tailwind CSS, Vite, Redux Toolkit, shadcn/ui |
Server-Side Rendering (SSR), Incremental Static Regeneration (ISR), Progressive Web Apps (PWA), atomic design systems, and sub-100ms INP responsiveness. |
| API Gateway & Microservices | NestJS, Node.js, Express.js, Python, gRPC, REST APIs, GraphQL |
Modular domain-driven microservices, protobuf contract enforcement, OAuth2 / JWT authentication, distributed rate limiting, and zero-trust perimeter security. |
| Event Streaming & Messaging | NATS JetStream, Apache Kafka, BullMQ, Redis Pub/Sub |
Event-driven microservices coordination, asynchronous job scheduling, Saga orchestration, idempotency keys, and transactional outbox patterns. |
| Databases & Storage | PostgreSQL (Sharded), ClickHouse, Redis, MongoDB, Elasticsearch |
Multi-model persistence: relational OLTP with horizontal sharding, real-time columnar analytics with ClickHouse, sub-millisecond caching via Redis, and semantic search. |
| Cloud, DevOps & GitOps | Docker, Kubernetes (EKS), ArgoCD, AWS, GCP, GitHub Actions |
Declarative GitOps deployment pipelines, container orchestration, automated canary rollouts, zero-downtime rolling upgrades, and infrastructure as code. |
| Autonomous AI Runtime | Agentic Harness, MCP Server, pgvector, OpenAI API, Gemini, Ollama |
6-phase looping execution state machines, tool integration schemas, permission approval gates, vector embeddings, and contextual memory graphs. |
Explore my primary open-source projects, system designs, and production implementations:
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Enterprise E-Commerce Microservices Platform Production-grade distributed architecture consisting of 12 NestJS microservices communicating via gRPC and NATS JetStream events. Features multi-tenant database sharding, CQRS, transactional outbox, Saga pattern, ClickHouse analytics, and ArgoCD GitOps on Kubernetes (EKS).
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Agentic AI Runtime & State-Machine Engine Open-source, zero-dependency autonomous AI agent harness in TypeScript. Built with a 6-phase execution state machine, 24 native system tools, human-in-the-loop interactive permissions, MCP server integration, and composable agent APIs.
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AI-Native Code Editor & Workspace High-performance developer workspace equipped with an integrated agentic engine (29 tools, 8 model providers, granular permission barriers), persistent session memory, and in-depth document RAG.
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Hybrid RAG & Live Canvas Visualization Intelligent conversational agent combining hybrid retrieval RAG (pgvector + full-text search), autonomous query routing, and real-time visual canvas rendering for rich data interactions.
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Full-Stack Food Discovery & Ordering App Modern end-to-end web platform featuring React, Vite, Express, Tailwind CSS, and shadcn/ui. Implements interactive menus, dynamic cart workflows, and documented system diagrams.
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Deep Packet Inspection & Network Analytics High-throughput packet analysis engine designed in TypeScript for inspecting protocol metadata, identifying traffic anomalies, and real-time network security monitoring.
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| Project / Product | Domain & Architectural Contribution | Impact |
|---|---|---|
| Power Browser | Fast, privacy-focused browser with ad-blocking architecture | Engineered high-efficiency content blocking filters and core engine optimization |
| DApp Store | Decentralized Web3 application ecosystem with native crypto wallet | Integrated smart contract interfaces, non-custodial wallet auth, and state sync |
| adsGPT | GenAI marketing platform suggesting high-performing ad variations | Architected LLM prompt pipelines, retrieval caching, and campaign generation logic |
| Enterprise E-Commerce | Scalable multi-tenant e-commerce web applications | Implemented order pipelines, inventory locks, payment gateways, and analytics |
- Power Browser — Software Engineer
- Led performance engineering initiatives and optimized high-throughput background processes for millions of active users.
- Sechpoint — Full-Stack Developer
- Designed and delivered production-grade full-stack web applications with robust backend APIs and responsive UIs.
- Globussoft Technology — Full-Stack Engineer
- Built scalable SaaS platforms, automated microservices integrations, and accelerated delivery lifecycles.
- Oda Class — Academic Mentor
- Mentored students in core computer science, algorithm design, and software problem-solving fundamentals.
- Bachelor of Technology (B.Tech) in Computer Science & Engineering
- University Institute of Technology, The University of Burdwan
Whether you're looking to discuss distributed systems architecture, microservices scaling, autonomous AI agent runtimes, or prospective senior engineering roles — let's connect!
