Professional Experience

Current Role

Chief Technology Officer (CTO)

Bangla Sahayata Kendra (BSK), Government of West Bengal

May 2022 - Present | Kolkata, India

Leading a statewide distributed digital platform delivering 320+ citizen services across 5,022 centers through unified cloud-based infrastructure.

• Lead a 90+ member cross-functional engineering organization spanning backend, frontend, DevOps, data, and platform teams.
• Provide technology oversight for an ecosystem supporting 10,000+ field operators statewide.
• Own and manage an annual technology budget of INR 1.2 Cr, driving modernization and automation initiatives.
• Define and execute multi-year architectural roadmaps focused on scalability, resilience, and AI integration.
• Architected a domain-segregated modular platform with per-service database isolation.
• Implemented centralized API Gateway governance integrating 40+ government systems.
• Designed asynchronous processing pipelines for high-throughput, non-blocking workflows.
• Enabled platform scalability supporting 10K+ concurrent users and ~150,000 daily transactions.
• Maintained 200-500 ms average API response latency across core services.
• Improved processing efficiency by 30% through performance optimization and orchestration redesign.
• Established database replication, automated health checks, and centralized logging for operational resilience.
• Built real-time monitoring dashboards and structured Root Cause Analysis (RCA) frameworks.
• Designed AI-driven service recommendation engine improving citizen service discoverability.
• Developed Retrieval-Augmented Generation (RAG) chatbot integrating vector search and LLM-based responses.
• Enabled data-driven decision-making through operator analytics and BI/MIS dashboards.

March 2024 - Present

Chief Technology Officer - IEPSSOLs (Project)

BIMPAI, IEPSSOLs-SaaS (Comprehensive digital ecosystem for SMEs)

Leading the architecture and scale-up of a cloud-native, AI-powered SaaS platform designed as a Unified SME Business Operating System.

• Defined production-grade AWS cloud architecture supporting scalable, multi-tenant onboarding.
• Designed modular backend architecture (Java Spring Boot) with evolutionary path from monolith to microservices.
• Built high-performance web stack using Next.js (SSR), TypeScript, and Tailwind CSS.
• Implemented queue-driven asynchronous processing (AWS SQS) for scalable workload orchestration.
• Architected multi-database strategy: PostgreSQL (RDS), DynamoDB/MongoDB, and Redis (ElastiCache).
• Established secure API ecosystem with REST, JWT authentication, rate limiting, and versioning.
• Led mobile architecture using Kotlin Multiplatform, Jetpack Compose, and SwiftUI.
• Implemented containerized deployment (Docker) with Kubernetes (EKS) and Terraform-based IaC.
• Designed CI/CD pipelines with blue-green deployments and automated backup strategy.
• Established observability stack with CloudWatch, APM, distributed tracing, and centralized logging.
• Built secure multi-tenant architecture with RBAC, encryption at rest, WAF, and DDoS protection.
• Integrated AI layer with LLM services, forecasting models, and vector search capability.
• Developed subscription & billing engine with usage metering and payment gateway integration.
• Defined RTO/RPO-driven disaster recovery framework and automated backup mechanisms.
• Implemented feature-flag system for controlled rollout, A/B testing, and plan-based enablement.

June 2008 - April 2022

Principal & Head - E-Learning | Senior Digital Transformation Leader

Led digital transformation and institutional modernization across a multi-institution educational ecosystem including engineering colleges, polytechnics, ITIs, and vocational institutions.

• Strengthened institutional financial and academic performance through strategic digital initiatives.
• Designed and launched a comprehensive LMS platform with structured curriculum delivery.
• Developed Student Management System integrating academic tracking and analytics.
• Implemented VARK-based pedagogy and industry-aligned training frameworks.
• Introduced automated student performance monitoring and faculty enablement programs.
• Architected adaptive learning platform for engineering students on Google Cloud Platform.
• Organized and digitized 1,000+ subjects for structured e-learning delivery.
• Launched "The SMIT Way" E-Learning Solution for academic quality improvement.
• Oversaw academic and administrative operations across multiple institutions.
• Led admissions strategy, outreach initiatives, and institutional branding.
• Managed government partnerships and executed trust-level strategic initiatives.
• Drove large-scale digital accessibility and technology-enabled education expansion.

April 1995 - June 2008

Early Career - Software Development

Built a strong foundation in enterprise software development, client engagement, and solution delivery.

• Designed and developed custom enterprise software solutions tailored to diverse client requirements.
• Led requirement analysis, solution architecture, and end-to-end deployment lifecycle.
• Conducted on-site client implementations, system configuration, and post-deployment support.
• Developed automated bulk reporting and printing systems to streamline operational workflows.
• Built reporting and business process optimization tools improving efficiency and accuracy.
• Collaborated with cross-functional teams to ensure timely and high-quality software delivery.