---
title: "Oluwaseyi Idowu (@idowuseyi) | Hashnode"
description: "Software Engineer. Read the latest articles by Oluwaseyi Idowu on Hashnode."
url: "https://hashnode.com/@idowuseyi"
---

@idowuseyi

# Oluwaseyi Idowu

@idowuseyi · Joined June 2023

Software Engineer

### [How I Created a Versatile Mobile Toolkit App](https://idowuseyi.hashnode.dev/how-i-created-a-versatile-mobile-toolkit-app?utm_source=hashnode&utm_medium=feed)

Introduction In a world where we constantly switch between dozens of single-purpose apps, I wanted to build something different—a single, beautifully designed mobile application that bundles everyday

9 min read · [idowuseyi.hashnode.dev](https://idowuseyi.hashnode.dev/how-i-created-a-versatile-mobile-toolkit-app?utm_source=hashnode&utm_medium=feed)

[Apr 19](https://hashnode.com/posts/how-i-created-a-versatile-mobile-toolkit-app/69e5138b13e74eec583274a6)

### [Why I Don't Just "Test" User Registration](https://idowuseyi.hashnode.dev/why-i-don-t-just-test-user-registration?utm_source=hashnode&utm_medium=feed)

A Lead Engineer’s Perspective on Protecting the Product

2 min read · [idowuseyi.hashnode.dev](https://idowuseyi.hashnode.dev/why-i-don-t-just-test-user-registration?utm_source=hashnode&utm_medium=feed)

[Apr 16](https://hashnode.com/posts/why-i-don-t-just-test-user-registration/69e034faf95c47e87f75a444)

### [𝗠𝗮𝘀𝘁𝗲𝗿𝗶𝗻𝗴 𝗥𝗼𝘂𝗻𝗱𝗶𝗻𝗴 𝗠𝗲𝘁𝗵𝗼𝗱𝘀: 𝗔 𝗗𝗲𝗲𝗽 𝗗𝗶𝘃𝗲 𝗶𝗻𝘁𝗼 𝗣𝗿𝗲𝗰𝗶𝘀𝗶𝗼𝗻 𝗶𝗻 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁](https://idowuseyi.hashnode.dev/mastering-rounding-in-software-development?utm_source=hashnode&utm_medium=feed)

𝗜𝗻𝘁𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 In the world of software development, rounding numbers might seem like a mundane task—after all, who hasn't used 𝙈𝙖𝙩𝙝.𝙧𝙤𝙪𝙣𝙙() in JavaScript or similar functions in ot

8 min read · [idowuseyi.hashnode.dev](https://idowuseyi.hashnode.dev/mastering-rounding-in-software-development?utm_source=hashnode&utm_medium=feed)

[Mar 27](https://hashnode.com/posts/mastering-rounding-in-software-development/69c6bba27cf27065102a5407)

### [Building an AI-Powered Domain Expiry Checker: A Mastra.ai Deep Dive](https://idowuseyi.hashnode.dev/building-an-ai-powered-domain-expiry-checker-a-mastraai-deep-dive?utm_source=hashnode&utm_medium=feed)

Hey devs! If you've ever stared at a domain renewal email and thought, "Wait, when does this actually expire?" – you're not alone. Domain management is a sneaky time-sink, especially when juggling multiple sites. What if you could build a smart agent...

8 min read · [idowuseyi.hashnode.dev](https://idowuseyi.hashnode.dev/building-an-ai-powered-domain-expiry-checker-a-mastraai-deep-dive?utm_source=hashnode&utm_medium=feed)

[Nov 3, 2025](https://hashnode.com/posts/building-an-ai-powered-domain-expiry-checker-a-mastraai-deep-dive/69090011febb363877e57d42)

### [Understanding Api Like A Pro](https://idowuseyi.hashnode.dev/understanding-api-like-a-pro?utm_source=hashnode&utm_medium=feed)

APPLICATION PROGRAMMING INTERFACES - (API)

9 min read · [idowuseyi.hashnode.dev](https://idowuseyi.hashnode.dev/understanding-api-like-a-pro?utm_source=hashnode&utm_medium=feed)

[Nov 3, 2025](https://hashnode.com/posts/understanding-api-like-a-pro/6908fd710547c09d5afc1dab)