Engineering Notes

Chan MG
writes about building.

Architecture decisions, auth systems, and the thinking behind building multi-product SaaS platforms.

Topics Auth Architecture SaaS Node.js Databases Permissions

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2 posts
Latest Post
Engineering Product Thinking Mindset
The 100x Product Engineer Isn't a Myth
The gap between engineers who code and engineers who solve the right problems is widening faster than ever. Here's what it actually looks like — and how to get there.
March 2026 ● 8 min read ● Engineering · Product · Mindset
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Auth Architecture SaaS
Building a Centralized Auth System for a Multi-Product SaaS Platform
One auth service. Three independent products. Kiosks, POS terminals, and mobile apps — all secured differently, all talking to the same identity layer.
March 2026 ● 12 min read ● Node.js · Redis · JWT
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Chan MG — Building multi-product SaaS platforms. Writing about the architecture decisions that come with scale.