Portfolio

Kuldeep Singh

Software Engineer and AI Enthusiast

Building scalable backends, payment systems, and AI-driven workflows.

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 2   name: "Kuldeep Singh",
 3   role: "Software Engineer and AI Enthusiast",
 4   hobbies: [
 5     "Software Development",
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 9   age: 24,
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About me

A bit of context on how I build and what I care about.

Hi, I'm Kuldeep Singh, a Software Engineer who builds scalable backend systems, payment infrastructure, and distributed services. I focus on reliable, production-grade code and systems that handle scale.

I have hands-on experience working with Golang, PostgreSQL, Redis, and microservice architectures. I’ve built transaction systems, reconciliation flows, bulk payment processing, and secure bank integrations handling thousands of daily transactions.

Currently, I’m working on Unplex — a conversational payment and automation platform — where I’m designing backend workflows, AI-driven interactions, and system integrations to simplify business payments and communication.

I completed my B.Tech in Computer Science and continue to deepen my knowledge in system design, distributed architecture, and AI-integrated platforms. I’m always open to opportunities where I can build impactful products and grow with strong engineering teams.

Articles

Notes on systems, payments, and building with AI.

View all

Skills

Languages, platforms, and tools I use day to day.

Languages

Gola

Golang (Primary)

Pyth

Python

Java

SQL

SQL

Backend (Golang)

Gin

Gin

GORM

Gink

Ginkgo

Conc

Concurrency (Goroutines, Channels)

Messaging & Eventing

Kafk

Kafka

Rabb

RabbitMQ

AWS

AWS EventBridge

Databases

Post

PostgreSQL

Dyna

DynamoDB

Mong

MongoDB

DevOps & Tooling

Dock

Docker

Git

Git

GitL

GitLab CI/CD

Post

Postman

JMet

JMeter

Python Ecosystem

Fast

FastAPI

Pyte

Pytest

Asyn

AsyncIO

Requ

Requests

Virt

Virtualenv

GenAI / LLM

Open

OpenAI API

Prom

Prompt Engineering

Tool

Tool/Function Calling

Stru

Structured Outputs

RAG

RAG Workflows

Developer Tools

VS Code

Inte

IntelliJ IDEA

PgAd

PgAdmin

Beek

Beekeeper Studio

Education & experience

Where I studied and where I've shipped production systems.

Education

Lovely Professional University

Bachelor of Technology (CSE) - CGPA - 8.08

Aug 2020 – Aug 2024 · Phagwara, Punjab

Saraswati Vidhya Mandir

12th PCM

2012 – 2019 · Higher Secondary (Science)

Work

Unplex

Software Engineer-1

May 2025 – Present · Remote

Enabled WhatsApp-based customer support by integrating Intercom APIs and session management.
Designed and developed a marketing campaign automation system using AWS EventBridge and Kafka to deliver high-volume notifications.
Built LLM-based NLU with RAG for intent detection and API-driven interaction handling on WhatsApp.

NUPAY

Associate Software Engineer

Aug 2023 – May 2025 · Gurgaon, India

Enabled 100% multi-account credit processing by designing a system for 10+ bank accounts, enhancing transaction scalability.
Improved fund transfer efficiency by 40% with an API for seamless wallet-to-wallet transactions.
Developed a virtual account microservice, improving reconciliation and cash flow visibility by 30%, streamlining fund distribution for 50000+ virtual accounts.
Managed maintenance tasks for wallet, payout, and notification microservices, ensuring high availability.
Designed and implemented a robust bulk payment system enabling scalable payouts.

Featured projects

Selected builds — systems, tools, and experiments.

Operating SystemSimulationFIFOOPRMRULRU

Page Replacement Algorithms

View Project →

ReactVercelURL Shortener

URL Shortener

View Project →

View All Projects

Participation

Community events and open-source milestones.

DevFest India 2021Hacktoberfest 2021Hacktoberfest 2022

Contact

Discuss a project or just say hi — my inbox is open.

kuldeepsingh382002@gmail.com

Social

Send a message

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