Hey, I’m Kunal.

Software, systems, and ideas. Always building.

I’m a software engineer working across the stack, from interfaces and APIs to the systems behind them. At Tata Consultancy Services, I work on-site with IBM, building web applications with React, Next.js, and Node.js.

Alongside my professional role, I take on freelance projects, helping clients turn their ideas into useful digital products. I care about clear communication, thoughtful design, and software that people can rely on.

I’m interested in applied AI, cloud infrastructure, and the craft of building better software. My projects give me space to explore these ideas, and I share what I learn through my writing.

Have a role or a project in mind? Let’s talk.

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Kunal Kumar
02 SELECTED WORK

Ideas into
working things.

Small teams, meaningful problems,
and software built to last.

Applied AI · 2026

Shipcheck

An AI-assisted workspace for validating shipping information before it becomes an expensive mistake.

  • Next.js
  • TypeScript
  • AI SDK
View project
Product Engineering · 2025

Field Notes

A quiet publishing system for turning research, experiments and lessons into useful technical writing.

  • React
  • MDX
  • PostgreSQL
View project
Systems · 2024

Signal Room

Operational tooling that gives small teams a clearer picture of what is happening in production.

  • Node.js
  • AWS
  • Redis
View project
05 WRITING

Notes on software engineering,
systems, AI and the craft of building.

Understanding Database Indexes

A practical guide to the small structures that make large datasets feel fast.

8 MIN READ↗

Why I Started Building with AI

What changes when AI becomes a material in the product, not just a feature on the roadmap.

6 MIN READ↗

The Case for Boring Tools

Reliable software rarely needs to announce how clever it is.

5 MIN READ↗
VIEW ALL WRITING →
03 EXPERIENCE

The work
behind
the work.

Building products, deepening my craft, and learning along the way.

EXPERIENCE & EDUCATION
  1. Feb 2025 — PresentCurrent role

    Tata Consultancy Services

    Full-Stack Developer (Client: IBM)

    Working on-site at IBM through TCS, developing scalable and modern web applications using React.js, Next.js, and Node.js.

    • React.js
    • Next.js
    • Node.js
    • MongoDB
    • TypeScript
    • REST APIs
    • AWS
  2. Apr 2023 — Aug 2023

    Persistent Systems

    Persistent Martian (Summer Intern)

    Selected as a Persistent Martian for the Summer Internship Program. Developed core technical competencies in object-oriented programming and problem solving.

    • Java
    • Problem Solving
    • Data Structures
    • Algorithms
04 TECHNOLOGIES

A practical
toolkit.

LANGUAGES

TypeScript · JavaScript · Python · Java

FRONTEND

React · Next.js · Tailwind CSS

BACKEND

Node.js · APIs · PostgreSQL · Redis

CLOUD

AWS · Docker · CI/CD

AI

LLM APIs · AI SDKs · AI-powered applications

07 GET IN TOUCH

Let’s build
something useful.

Have a project, idea, or opportunity? I’d love to hear about it.