Article | AI Product management
What is software even?
A clear, beginner-friendly breakdown of how software works under the hood — from logic and data to systems and trade-offs.
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5 spots leftI'm Justice Onyekachi,Product Engineer/Managerfor stealth minded startups.
The product Mechanic - 8+ years of building, breaking, and fixing real products.
Justice Onyekachi
The product mechanic
I'oduct engineer, AI PM, author and founder of Resido. I also write about product, engineering, and startups. You can explore my works and feel free to reach out to me for collaborations.
Browse AI
AI powered web assistant
Browse AI is an AI web assistant chrome extension built to make generative AI usable directly inside the browser.
Learn More
Spay Luxury
Ecommerce store for mens fashion brand
Spay luxury is a mens fashion store built with Next Js that makes over 5 million naira in sales per annum
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Featured
Publications
I publish practical essays and case studies across Product, Engineering, AI, Startups
Article | Web development
FEBESWE
Implementing Paystack in your app
A step-by-step guide to integrating Paystack across FE, BE, and full-stack workflows — without breaking things in production.
Full article →FEBESWE
Article | Devops
Linux File System for Beginners
From the ground up: how Linux powers real systems and how large teams use it to securely manage access at scale.
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Course
Intro to TPM for Product Managers
For product managers who want to truly understand the systems they ship.
Coming soon →