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The Polymathic Engineer

Substack
newsletter.francofernando.com· weekly· Published 7 days ago

A technical newsletter from a software engineer that explains computing fundamentals and system design in depth, such as floating-point representation, caching data structures, and API communication patterns. Readers get structured, practical explanations they can apply to real engineering work.

floating pointieee 754cache designlru cachegrpcprotocol buffersrpcrest api designapi designfixed-point arithmeticsystem designbackend engineering
Platform
Substack
Frequency
Weekly
Latest issue
Oct 16, 2026
Language
English
Written for
Software engineers wanting deeper systems fundamentals
Tone
practical
Tracked since
Oct 21, 2026

Website: https://newsletter.francofernando.com