---
title: "Samuel Nwankwo (@saminwankwo) | Hashnode"
description: "Software Developer. Read the latest articles by Samuel Nwankwo on Hashnode."
url: "https://hashnode.com/@saminwankwo"
---

@saminwankwo

# Samuel Nwankwo

@saminwankwo · Port Harcout, Nigeria · Joined June 2022

Software Developer

[Website](https://saminwankwo.netlify.app/)

### [Introduction to System Design](https://saminwankwo.hashnode.dev/introduction-to-system-design-1?utm_source=hashnode&utm_medium=feed)

Part 2 — Building a URL Shortener

5 min read · [saminwankwo.hashnode.dev](https://saminwankwo.hashnode.dev/introduction-to-system-design-1?utm_source=hashnode&utm_medium=feed)

[Nov 18, 2025](https://hashnode.com/posts/introduction-to-system-design-1/691bbc080faa677352efb3ff)

### [Introduction to System Design](https://saminwankwo.hashnode.dev/introduction-to-system-design?utm_source=hashnode&utm_medium=feed)

Part 1 - Using a simple TODO app to understand big concepts

5 min read · [saminwankwo.hashnode.dev](https://saminwankwo.hashnode.dev/introduction-to-system-design?utm_source=hashnode&utm_medium=feed)

[Nov 14, 2025](https://hashnode.com/posts/introduction-to-system-design/69167d271ce18c5140d5b4ed)

### [Technical Deep Dive: Defending Your Backend from Steganography Attacks](https://saminwankwo.hashnode.dev/technical-deep-dive-defending-your-backend-from-steganography-attacks?utm_source=hashnode&utm_medium=feed)

Shielding Your Backend from Hidden Data Threats

4 min read · [saminwankwo.hashnode.dev](https://saminwankwo.hashnode.dev/technical-deep-dive-defending-your-backend-from-steganography-attacks?utm_source=hashnode&utm_medium=feed)

[Mar 12, 2025](https://hashnode.com/posts/technical-deep-dive-defending-your-backend-from-steganography-attacks/67d2072207020bfecd026727)

### [How I Prevented Signups from Temporary Emails on My Website](https://saminwankwo.hashnode.dev/how-i-prevented-signups-from-temporary-emails-on-my-website?utm_source=hashnode&utm_medium=feed)

Temporary or disposable email addresses are often used to create fake accounts, cluttering databases, skewing analytics, and posing

4 min read · [saminwankwo.hashnode.dev](https://saminwankwo.hashnode.dev/how-i-prevented-signups-from-temporary-emails-on-my-website?utm_source=hashnode&utm_medium=feed)

[2](https://hashnode.com/posts/how-i-prevented-signups-from-temporary-emails-on-my-website/67bce45a9f78b6e6257b2109) [Feb 24, 2025](https://hashnode.com/posts/how-i-prevented-signups-from-temporary-emails-on-my-website/67bce45a9f78b6e6257b2109)

### [How I Automated MongoDB Backups with Node.js](https://saminwankwo.hashnode.dev/how-i-automated-mongodb-backups-with-nodejs?utm_source=hashnode&utm_medium=feed)

Automate MongoDB Backups with Node.js: A Step-by-Step Guide

4 min read · [saminwankwo.hashnode.dev](https://saminwankwo.hashnode.dev/how-i-automated-mongodb-backups-with-nodejs?utm_source=hashnode&utm_medium=feed)

[Feb 5, 2025](https://hashnode.com/posts/how-i-automated-mongodb-backups-with-nodejs/67a2c595bd68bdb988261c7c)