Rehan Ahmed
Backend Engineer
Story Stack Work Blog Contact
Hey, I'm —

Rehan Ahmed

Backend engineer who builds systems that scale. From machine learning pipelines to high-performance APIs — I architect the invisible infrastructure behind products people love.

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BACKEND — SYSTEMS — SCALE — ARCHITECTURE — PERFORMANCE — BACKEND — SYSTEMS — SCALE — ARCHITECTURE — PERFORMANCE —

I started in machine learning.
Then I found my
real calling.

I spent my early days building ML models — neural networks, data pipelines, the whole nine yards. But somewhere along the way, I realized what truly excited me wasn't the models themselves. It was the systems underneath them — the APIs that served predictions in milliseconds, the databases that handled millions of records, the infrastructure that made everything actually work at scale.

So I pivoted. And I've never looked back.

Read the full story on my blog
500+
Concurrent requests handled
<200ms
API response time
$0/mo
Self-hosted cloud infra cost
1TB
Personal cloud storage

The tools I wield

Every tool chosen with intent. Every stack decision backed by experience.

Backend & APIs
Node.js Express Python FastAPI REST GraphQL
Databases & Storage
PostgreSQL MongoDB Redis SQL
DevOps & Infra
Docker Git Linux Cloudflare CI/CD AWS
ML & Data
TensorFlow PyTorch Pandas NumPy Scikit-learn
Frontend
HTML/CSS JavaScript React Tailwind
Currently Learning
Kubernetes Terraform AWS CDK System Design
BUILD — SHIP — ITERATE — DEPLOY — OPTIMIZE — BUILD — SHIP — ITERATE — DEPLOY — OPTIMIZE —

Things I've built

01

InternGenie

A recommendation platform that matches interns with opportunities. Engineered to handle 500+ concurrent requests with sub-200ms response times. Built the entire backend from scratch.

Node.js Express PostgreSQL Redis
IG
● Live
02

Verdict

AI-powered education platform with a knowledge graph of 500+ concepts. Helps students navigate algorithms and data structures through intelligent recommendations.

Python FastAPI MongoDB ML
VD
● MVP
03

Personal Cloud

Self-hosted cloud infrastructure — 1TB of storage at $0/month. Built because why pay for cloud when you can build your own? Docker-powered, Linux-based, fully self-managed.

Docker Linux Nginx Self-hosted
PC
● Running
04

GeoXD

Real estate analytics platform — bringing data-driven insights to property markets. Currently in active development.

Python Data Analytics PostgreSQL
GX
◌ WIP

Chapter closed.

That was version one.

The backend era
has just begun.

New systems. New architectures. New scale.
Stay tuned — what's coming next will be worth the wait.

I also write

Thoughts on backend architecture, the ML-to-backend journey, system design patterns, and lessons learned building real systems. Raw, unfiltered, written from the trenches.

Read the blog
Why I left ML Building at Scale Self-Hosting Everything The Backend Mindset Docker Deep Dives System Design Notes Why I left ML Building at Scale Self-Hosting Everything The Backend Mindset Docker Deep Dives System Design Notes

Got a project?
Let's talk.

I'm currently open to freelance projects, collaborations, and full-time opportunities. If you're building something ambitious, I'd love to hear about it.