Sankar Prasad Biswas

About Sankar Prasad Biswas

I am a Senior Backend Engineer and Technical Lead with 8+ years of experience designing and scaling production-grade web applications, backend architectures, payment systems, and cloud-deployed platforms.My core stack includes:Node.js (Express, NestJS), TypeScript (ES6+), React.js, React Native, Next.js, MongoDB, MySQL, Redis, REST APIs, and modular monolith architecture patterns.I have hands-on experience deploying applications using AWS S3, CloudFront, and Route 53, including CDN configuration, domain routing, and production-grade hosting strategies.At GeoTech Infoservices, I led backend architecture for Real Fantasy Teams (RFT), where I- Transitioned a tightly coupled monolith into a structured modular monolith architecture- Reduced automation job execution time from 2 hours to 2 minutes (28 scheduled jobs optimized)- Designed a central banking service integrating multiple payment gateways (Stripe, Cashfree-ready)- Architected Redis-backed leaderboard systems for Daily Fantasy Football (DFF)- Built worker-based feed processing services using Node.js worker-farm- Implemented OpenID (RFC6749) with OTP-based login and ABAC authorization- Led Agile transformation and ISO 9001:2015 aligned SDLC improvementsAs a group lead, I managed cross-functional teams of backend, frontend, QA, and graphics (up to 16 members), conducting daily code reviews, sprint planning, and architecture decisions.Currently, I am working as Senior Backend Engineer – NestJS at Quantech Associates Pvt. Ltd.(India entity of 4D, Canada), contributing to backend systems for a North American enterprise engagement within a Quality Assurance & Compliance (QAC) application ecosystem.My responsibilities include- Scalable REST API development using NestJS and TypeScript- Structured modular service design and maintainable backend architecture- Integration and management of Azure Service Bus for distributed data pipelines- Implementation of Azure Timer Functions for scheduled backend workflows- Search and observability stack management using Elasticsearch and Kibana- React Native-based application support- Containerized deployment environments- Collaboration with distributed Canada-based engineering teamsAdditionally, I actively explore applied AI concepts including LangChain, Ollama, RAG architectures, and event-driven microservices for backend automation use cases.I focus on building systems that are scalable, performance-driven, and operationally sustainable.Thank you for visiting my profile.

Experience

1. Senior Backend Engineer Nestjs

   Fourth Dimension 4d

   Nov 2025 — Present · Kolkata, IN

   Key Responsibilities & Technical Scope:• Designing and developing scalable REST APIs using NestJS, Node.js, and TypeScript• Implementing structured modular backend architecture for maintainable services• Managing Azure Service Bus for distributed data pipeline communication• Developing scheduled backend workflows using Azure Timer Functions• Implementing and maintaining search & observability stack using Elasticsearch and Kibana• Supporting React Native-based mobile application workflows• Working with containerized deployment environments• Collaborating with distributed Canada-based engineering teams in Agile environment• Ensuring structured logging, monitoring, and backend service stability

Education

• B.S.F. INSTITUTE OF TECHNOLOGY, Bangalore-63

  DIPLOMA, COMPUTER SCIENCE AND ENGINEERING

  2009 — 2012

• Sabita Devi Education Trust, Brainware Group of Institutions 270

  Bachelor of Technology (B.Tech.), COMPUTER SCIENCE AND ENGINEERING

  2015 — 2018