SulemanBadar

Backend Engineer▌

MERN Stack Developer▌

AI Engineer▌

Open Source Contributor▌

I architect resilient backend systems and ship considered, performant interfaces. From distributed search pipelines to KDE open source contributions, I build software that holds up under pressure.

Explore Work View Source

Backend

Systems

Engineer

Open

Source

Problem

Solver

~/suleman/identity.sh

$ whoami --verbose

> systems-thinker. backend-leaning. obsessed w/ scale.

$ cat focus.json

{

"core": "scalable backend architecture",

"frontier": ["LLMs", "agentic systems"],

"ethos": "engineering as craft"

}▌

Years building

OSS Merge Requests

Production systems

Languages fluent

BACKEND SYSTEMS

DISTRIBUTED SEARCH

MERN STACK

OPEN SOURCE / KDE

AI / LLM EXPLORATION

SCALABLE ARCHITECTURE

DEVELOPER TOOLING

DESKTOP APPLICATIONS

BACKEND SYSTEMS

DISTRIBUTED SEARCH

MERN STACK

OPEN SOURCE / KDE

AI / LLM EXPLORATION

SCALABLE ARCHITECTURE

DEVELOPER TOOLING

DESKTOP APPLICATIONS

[ // 02 — stack ]

An ecosystem, not a checklist.

Hover any node to surface its connected technologies. The graph reflects how the stack actually wires together in production.

backend

frontend

tools

Backend Core

Next · Node · Express · REST · JWT

Data Layer

MongoDB · PostgreSQL · MySQL

Frontend

Next · React · Tailwind · Framer Motion

Tooling

Docker · Git · Postman

Frontier

LLMs · Langchain · LangGraph

[ // 03 — selected work ]

Engineered, not assembled.

Case studies in shipping resilient software. Backend depth on the inside, considered interfaces on the outside.

Flagship · 2025-2026 · Production

FindHere

A modern location discovery platform engineered for high performance search and seamless navigation.

/ system flow

Client

API

Auth

Index

Mongo

p99 search

47ms

auth

JWT + refresh

media

Cloudinary CDN

primary

MongoDB

Node.jsExpressMongoDBMeilisearchReactTailwindLeaflet

Live Demo Source Collaborate

Café Aurora

cofee near rawalpndi▌47ms

Café Aurora

1.2 km · ★ 4.8

Coffee Lab

2.4 km · ★ 4.6

Foundry 21

3.0 km · ★ 4.5

qps 2,140

index 142k docs

region eu-west-1

Featured · 2026

TubeChat

RAG powered YouTube chatbot with persistent conversations and semantic search.

/ system flow

Client

FastAPI

RAG

Gemini

Neon

Embedding

Gemini

Latency

<2s

Framework

LangChain

Database

Postgres

FastAPIReactLangChainGeminiNeonPostgreSQLGroq

Live Demo Source Collaborate

youtube.com/watch?v=AI8r...

Explain the retrieval pipeline...▌

Building a RAG Application

18:24 • TechWithTim

Transcript

RAG combines retrieval with generation...

The transcript is chunked before embedding...

Semantic search returns relevant context...

The LLM generates grounded responses...

TubeChat Assistant

Streaming

Explain how semantic retrieval works in this video.

The retriever first searches embedded transcript chunks using semantic similarity, then injects the highest scoring passages into the LLM prompt before generation.▌

02:31

05:48

09:17

Featured · 2025

RANG

A real-time multiplayer card game built around a server-authoritative architecture. Gameplay, validation, room management, synchronization, and scoring are fully orchestrated by the backend while Socket.IO keeps four players perfectly synchronized.

/ system flow

Client

Socket.IO

Server

Game Logic

Broadcast

Players

4 Real-time

Latency

<100ms

Transport

Socket.IO

Authority

Server

ReactTypeScriptNode.jsExpressSocket.IOVite

Live Demo

Source unavailableConfidential client project

Live Match

Room #A81F

SERVER

Player 1

Player 2

Player 3

Player 4

Active

4 / 4

Tick Rate

60 Hz

Winner

Player 2

/ more work

Productivity · Fullstack

live2025

Contact Management System

Self-hosted CRM with role-based auth, audit logs, and a normalised PostgreSQL schema designed to scale to millions of contacts.

NodeExpressPostgreSQLReactJWT

Source Live demo

Systems · C/C++

2025

Multiplayer Networked Games

Low-level multiplayer games written in C/C++ with custom socket servers, game-state synchronisation, and lock-step simulation.

CC++SocketsUDPncurses

view on github

OSS · Desktop

2025

KDE Upstream Contributions

Patches, refactors, and feature work merged into KDE projects. Real world C++ / Qt workflow under public review.

C++QtKDE FrameworksCMake

view on github

Frontend · React

2025

Weather App

React powered weather dashboard that fetches real time conditions, temperature, and multi day forecasts for any city via a live weather API.

ReactViteJavaScriptCSSWeather API

view on github

Frontend · Vanilla

2025

Currency Converter

Responsive vanilla JS currency converter with live exchange rates across 150+ currencies. No frameworks, just clean DOM manipulation and a public rates API.

HTMLCSSJavaScriptExchange Rate API

view on github

UI Clone · CSS

2024

Spotify UI Clone

Pixel faithful Spotify interface recreation in pure HTML and CSS, no JavaScript, no frameworks. A study in layout, flexbox, and responsive design discipline.

HTMLCSSFlexboxResponsive

view on github

/ archive

More experiments and OSS work live on GitLab.

Browse Github Browse Gitlab

[ // 04 — open source ]

Code that survives public review.

Open-source contributions and competitive programming aren't credentials — they're proof of work. Here's the receipts.

GitLab · kde/okular

7+merge requests

150+ commits upstream

/ contributions / 52 weeks

A consistent rhythm of shipping.

GitHub

LeetCode

Codeforces

GitLab

/ recent activity · kde/okular

kde/okular

feature: make sidebar persist over sessions using KConfig

merged

kde/okular

feature: Add Home/End keybindings for document navigation

in review

[ // 07 — signal ]

Peer signal.

Collaborators, teammates, and open source co-contributors.

May 2026

Very productive and efficient. His problem solving skills are top notch and he is highly skilled at working with remote teams. Definitely recommended!

AbdulGhafoor

KMX Solutions

Submit feedback

Worked together?

I'd appreciate your honest take.

// sheet schema

Name · string

Role · string

Message · string

Rating · 1 – 5

feedback.submit()→ sheets.append_row()

// 06 — initiate contact

Let's build
something durable.

Open to startup engineering roles, serious open source collaboration, and high trust freelance work. Currently in UTC+5, replying within 24h.

primary channel

suleman.badar.butt@gmail.com

Designed & built in-house

NextJs · Tailwind · Motion

All systems nominal

SulemanBadar

An ecosystem, not a checklist.

Engineered, not assembled.

FindHere

TubeChat

RANG

Contact Management System

Multiplayer Networked Games

KDE Upstream Contributions

Weather App

Currency Converter

Spotify UI Clone

More experiments and OSS work live on GitLab.

Code that survives public review.

Peer signal.

Worked together?

Let's buildsomething durable.

Let's build
something durable.