Part 9C: Architecture Decisions at Scale: Choosing Between Good, Better, and BestEditor's Note Welcome to Part 9C of the Engineering Decision-Making Masterclass, a core section of The Staff Frontend Engineer Playbook (2027 Edition). In Part 9A, we explored how elite Staff EngineerAug 10 · 157 min readadekolaolawale.hashnode.dev
Part 9B: The Art of Trade-Off Analysis: Why Every Engineering Decision Has a CostEditor's Note Welcome to Part 9B of the Engineering Decision-Making Masterclass. In Part 9A, we explored how elite Staff Engineers approach problems before writing a single line of code. We discussed Aug 2 · 143 min readadekolaolawale.hashnode.dev
Part 9A: Engineering Decision-Making and Trade-Off Analysis at Scale: How Elite Staff Engineers Think Before Writing a Single Line of CodeEditor's Note Engineering decision-making is one of the largest and most important responsibilities of a Staff Engineer. Rather than compressing this topic into a single article, this guide has been eJul 21 · 105 min readadekolaolawale.hashnode.dev
How I Built a Production-Grade Fintech Payment API with Node.js, Fastify & BullMQTL;DR: Fastify over Express — schema-first routes, auto-generated OpenAPI docs, faster serialization. Raw SQL (pg) over an ORM — manual BEGIN/COMMIT gives precise, explicit transaction control. PosJul 13 · 21 min readadekolaolawale.hashnode.dev
Part 8: Staff-Level System Design for Massive Frontend Applications: Architecting for Millions of UsersWhen most developers hear the phrase system design, they immediately think about backend engineering. Questions like: Which database should we use? How should we partition data? Should we use RedisJul 7 · 9 min readadekolaolawale.hashnode.dev