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Kaustav Karmakar Books on AI · Kolkata

AI that ships,
for leaders and builders.

By Kaustav Karmakar, Technical Lead and author in Kolkata. Books on building AI agents with TypeScript and Next.js, and on data-driven AI decision making, AI strategy, and AI governance for leaders.

Explore the books → See the experience
8+years building web products
2books on AI, out now
3books, including Dynamics of AI with LLMs

About Kaustav Karmakar

AI books for leaders and JavaScript developers.

Kaustav Karmakar is a Technical Lead based in Kolkata, India, with more than eight years of experience in React, Next.js, TypeScript, Node.js, and AWS. He writes about practical AI: building AI agents with TypeScript and Next.js, covering tool use, RAG, MCP, evals, and deployment, and using data-driven AI to make better business decisions. His books include Building AI Agents with TypeScript and Next.js, Data-Driven AI Intelligence: A Leader's Guide to Turning Data into Decisions, and Dynamics of AI with LLMs.

The books

Two books. Two jobs to be done.

Looking for an AI book? Both of Kaustav Karmakar's recent books are available as Kindle ebooks and paperbacks on Amazon. One is an AI book for managers and business leaders. The other is an AI book for developers who want to build AI agents with TypeScript and Next.js.

AI agents bookTypeScript AI agentsNext.js AIRAG with Next.jsMCP tutorialLLM evalsData-driven AIAI strategy for leadersAI governanceDecision making with dataAI engineer KolkataTypeScript AI developerNext.js agent tutorialAI for business leadersLLM agents bookTool calling in TypeScriptStreaming AI UIAI bookAI books for developersAI books for managersNew AI books 2026Practical AI bookKindle AI bookAI paperback
Leadership Guide · AI book for managers

Data-Driven AI Intelligence

A Leader's Guide to Turning Data into Decisions

KAUSTAV KARMAKAR

For leaders and decision-makers

A leadership book on data-driven AI, AI strategy, and decision making. Models are becoming a commodity. Your data is not. Learn to decide, ground, measure, govern, and learn from data so AI creates lasting advantage. Written for executives, managers, and technical leaders.

Buy on Amazon →
Practical Guide for JavaScript Developers · AI book for developers

Building AI Agents with TypeScript & Next.js

Type safety, tools, agent loops, streaming UI, RAG, MCP, evals, deployment

KAUSTAV KARMAKAR

For JavaScript and TypeScript developers

A practical guide to AI agents and LLM agents with TypeScript and Next.js: tool calling, agent loops, streaming UI, RAG, MCP, evals, guardrails, and production deployment. Working code for JavaScript and TypeScript developers who want to build a TypeScript AI agent.

Buy on Amazon →

How I work

Pragmatic. Typed. Measured.

The same principles run through the books and the teams I lead.

01

Decide with data

Build the data foundation first, then let decisions follow what the numbers show.

02

Type everything

Type safety from the frontend to the agent's tools keeps AI systems predictable.

03

Ship to production

Evals, guardrails, CI/CD, and deployment are part of the build, not an afterthought.

Experience

8+ years of building and leading.

From full-stack builds to leading engineering teams on fixed-cost delivery.

  1. May 2022 – Present

    Technical Lead

    Capital Numbers Infotech · Kolkata

    • Lead cross-functional engineering teams and mentor developers.
    • Own frontend architecture using React, Next.js, and TypeScript.
    • Improve delivery predictability, estimation accuracy, and quality.
  2. Jun 2021 – May 2022

    Web Technologist

    Keystride Labs

    • Delivered Next.js and Node.js solutions for international clients.
    • Implemented CI/CD pipelines and deployment automation.
  3. Apr 2020 – Jul 2021

    Software Developer

    ZFunds

    • Developed scalable server-side rendered applications using Next.js.
  4. Jun 2019 – Nov 2019

    Senior Software Developer

    Vixplor Analytics

    • Built full-stack solutions using Node.js, AngularJS, and PostgreSQL.
  5. Dec 2017 – Mar 2019

    Full Stack Developer

    CapitalQuotient.com

Selected work

Products built for real constraints.

B2B Platform

Multi-Tenant Admin Portal (Intterra)

A secure platform built with Next.js, Node.js, PostgreSQL, and AWS, with role-based access control and reporting.

Blockchain

Blockchain Employee Verification Platform

Integrated Ethereum smart contracts with Next.js and Node.js services for automated verification workflows.

Toolkit

The stack behind the work.

React.jsNext.jsTypeScriptJavaScriptNode.jsExpress.jsREST APIsMicroservicesAWSDockerCI/CDGitHub ActionsPostgreSQLMySQLMongoDBSystem DesignTechnical LeadershipEthereum / BlockchainAI-Assisted Development

Education

Formal training, continued learning.

2017

B.Tech in Computer Science and Engineering

Maulana Abul Kalam Azad University of Technology, West Bengal formerly WBUT

Certificate

Executive Post Graduate Certificate Program

IIT Kharagpur

Let's build something that ships.

LinkedIn GitHub kaustavkarmakar2@gmail.com
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