Casmir Onyekani

@Casmir

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Full Stack Developer

Lagos, NigeriaJoined June 2023

About

I am a Software Developer who is so passionate about teaching and writing.

Available for

Software development and technical writing.

Casmir Onyekani's blogs

freeCodeCamp Englishfreecodecamp.org/news11 posts

Cas blogcasblog.hashnode.dev9 posts

Articles Comments

Recently published

COCasmir Onyekanifreecodecamp.org7h ago · 18 min read

How to Write Your First Quantum Circuit in Python: A Beginner's Step-by-Step Guide

Imagine opening your laptop and writing code that follows the laws of Quantum Physics. Sounds like science fiction, right? That's exactly what I thought the first time I heard about quantum computing.

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COCasmir Onyekanifreecodecamp.orgJun 22 · 19 min read

How to Organize and Maintain Azure Repositories at Scale: An Azure DevOps Engineer's Guide

Managing a few of repositories is easy. And managing dozens can be challenging. But managing hundreds across multiple teams, products, and deployment environments is where things start to break down.

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COCasmir Onyekanifreecodecamp.orgMay 5 · 15 min read

How to Build High-Ranking SEO Landing Page

New products are dropping daily, and smart sellers are quietly stacking profits. If you understand how SEO landing pages actually work today, you’re not guessing. Instead, you're building assets that

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COCasmir Onyekanicasblog.hashnode.devNov 21, 2025 · 7 min read

Continuous Deployment Made Easy: Automate Node.js Deployments on Seenode Using GitHub Actions

Deploying a Node.js application manually can quickly become stressful—pushing changes, tweaking environment variables, restarting the app, and hoping everything works. But what if deployment could be automatic, reliable, and hands-free? In this guide...

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COCasmir Onyekanifreecodecamp.orgNov 7, 2025 · 10 min read

How to Structure Your README File – README Template Example

As a developer who aspires to be a founder, building your first startup can be filled with excitement and ideas. The worst thing that could happen to you is jumping straight into the coding part. I was in this situation and the last thing on my mind ...

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Casmir Onyekani

About

Available for

Casmir Onyekani's blogs

Recently published

How to Write Your First Quantum Circuit in Python: A Beginner's Step-by-Step Guide

How to Organize and Maintain Azure Repositories at Scale: An Azure DevOps Engineer's Guide

How to Build High-Ranking SEO Landing Page

Continuous Deployment Made Easy: Automate Node.js Deployments on Seenode Using GitHub Actions

How to Structure Your README File – README Template Example

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Casmir Onyekani

About

Available for

Casmir Onyekani's blogs

Recently published

How to Write Your First Quantum Circuit in Python: A Beginner's Step-by-Step Guide

How to Organize and Maintain Azure Repositories at Scale: An Azure DevOps Engineer's Guide

How to Build High-Ranking SEO Landing Page

Continuous Deployment Made Easy: Automate Node.js Deployments on Seenode Using GitHub Actions

How to Structure Your README File – README Template Example