Hello, I'm

AJAY KUMARSINGH

Building products at the intersection of Web3, fintech, and great UX

Bengaluru, India

01 / About

Who I Am

I'm a Tech Lead & Senior Frontend Engineer with over 9 years of experience crafting high-performance web applications. Currently solo-architecting and building the entire product at PandaMoney — frontend, backend (Go), and cloud infrastructure (AWS) — from the ground up.

My journey has taken me through some of India's most impactful tech companies — from architecting blockchain-based platforms at Six Sigma Sports to scaling consumer products at Paytm serving millions of users. I specialize in building complex, real-time applications with a deep focus on performance, developer experience, and polished UX.

I'm particularly drawn to the intersection of Generative AI, Web3, and frontend engineering — where cutting-edge technology meets real user impact. I leverage AI-assisted development and LLM integrations to rapidly prototype and ship production-grade products. Whether it's building AI-powered features, integrating DeFi wallets, or designing component architectures that scale, I bring a product-minded approach to every line of code.

Years Experience

Companies

GenAI

Focus

Awards

02 / Experience

Where I've Worked

PandaMoney

Tech Lead

Feb 2025 — Present

Bengaluru

▹Solo-architecting and building the entire product from ground up — frontend, backend, and infrastructure
▹Designing and implementing the backend in Go Lang, handling API architecture, business logic, and system design
▹Building the frontend with Next.js and TypeScript for a modern fintech experience

Next.js

TypeScript

AWS

GenAI

LLM APIs

CloudFront

Six Sigma Sports (ST Labs)

SDE-3 — Web3

Jun 2022 — Feb 2025

Bengaluru

▹Led frontend architecture for a blockchain-based betting platform on Cosmos (SGE token)
▹Built with Remix (React + Node.js), achieving 40% better engagement and halving load times
▹Integrated Web3Auth, OAuth2, and Synaps KYC — driving 35% engagement increase

Remix

React

CosmJS

Web3Auth

gRPC

TypeScript

Paytm (One97 Communications)

Senior Software Engineer

Mar 2020 — May 2022

Bengaluru

▹Hotels: Built React-based booking interface → 20% booking increase in 3 months
▹ONDC: Improved platform interoperability by 40% and efficiency by 25%
▹Paytm Mall: Designed return & exchange flow serving 2M+ customers

React

JavaScript

Node.js

Trakinvest

Senior Software Engineer

Sep 2019 — Feb 2020

Bengaluru

▹Revamped React-based trading platform with modern architecture
▹Built Gatsby.js landing page with comprehensive SEO optimization
▹Developed Next.js SSR product for improved performance

React

Gatsby.js

Next.js

Good Earth

Software Engineer

Feb 2019 — Aug 2019

Delhi

▹Built responsive React pages for the e-commerce platform
▹Implemented OAuth2 social authentication
▹Created interactive book feature using Turn.js

React

OAuth2

Turn.js

GlobalLogic

Software Engineer

Oct 2016 — Feb 2019

Noida

▹Built Ember.js Employee Consortium Portal for DISA
▹Developed Angular.js Employee Directory application
▹Created CMS system for content management

Ember.js

Angular.js

03 / Skills

Tech Constellation

03 / Skills

Skills & Tools

Core Languages

Frameworks

State & Styling

Web3

Backend & Cloud

DevOps & Tools

AI & GenAI

Practices

hover to explore connections

Core Languages

JavaScript★TypeScript★HTML/CSS★Python

Frameworks

React★Next.js★RemixEmber.js

State & Styling

Redux★React QueryTailwind★Material UI

Backend & Cloud

Node.jsExpressGoAWSMySQL

Web3

Web3CosmJSWeb3Auth

DevOps & Tools

Git★WebpackCI/CDGH Actions

AI & GenAI

LLMOpenAI APIAI Agents

Practices

Agile/Scrum★Code Review★Leadership

04 / Recognition

Awards

🏅

Performer of the Quarter

GlobalLogic · 2017

🏅

Performer of the Year

Paytm · 2020–21

05 / Testimonials

What People Say

“As Engineering Manager at Paytm, I enjoyed working with Ajay Singh on numerous projects, including Paytm Hotels, Paytm Mall, ONDC, Seller Panel, and others. Ajay, a gifted frontend developer, joined us as a Software Engineer and quickly rose to a Senior role within a year due to his exceptional dedication and ability to perform under pressure. Over the course of his 2.5-year tenure at Paytm, Ajay demonstrated technical proficiency across various JS frameworks and took initiatives that considerably reduced developer time, increasing our overall team efficiency. His strong communication skills complemented his technical expertise, making him a standout contributor to our projects. I wholeheartedly recommend Ajay to any organization seeking a blend of technical prowess and dedication.”

Anup Jodish

Engineering Manager, Paytm

05 / Education

Academic Background

🎓

B.Tech in Computer Science & Engineering

Dr. A.P.J. Abdul Kalam Technical University

2012 — 2016

Volunteer & Teaching

Content Auditor

Unacademy

Audited React & JavaScript courses

Apr 2022 — Jul 2022

Teaching Assistant

UpGrad

Mentored students in frontend development

Apr 2021 — Aug 2021

07 / Blog

Writing & Thoughts

Coming Soon

12 min read

Building Production AI Agents with LangChain & Next.js

A deep dive into architecting reliable AI agent systems that actually work in production — from prompt engineering to error handling and observability.

GenAI

Next.js

LangChain

Coming Soon

8 min read

Web3 in 2026: What Actually Matters

Cutting through the noise — what's real, what's hype, and where smart developers should focus their energy in the Web3 space.

Web3

Blockchain

Opinion

Coming Soon

10 min read

From Frontend to Full-Stack: My Journey with Go

How learning Go transformed my understanding of backend systems and why every frontend engineer should try a compiled language.

Backend

Career

06 / Contact

Let's Connect

I'm always open to discussing new projects, creative ideas, or opportunities to be part of something great.

[email protected]

Phone

+91-7532051001

Connect on LinkedIn

Location

Bengaluru, Karnataka

09 / Terminal

Interactive Terminal

ajay@portfolio ~ %

Welcome to AJ's terminal! Type 'help' to get started.

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