Multi-Region Postgres on Hetzner: A Practical Guide
Setting up multi-region Postgres on Hetzner for SaaS read scaling and DR — async replication, failover orchestration, the observability that makes it operable.
— /journal
Engineering notes & field stories
Production-tested patterns, product stories from Blink AI, Nexia Academy and Wallnetic, and the trade-offs we hit shipping real software. Written by senior engineers, not marketing.
-
-
Anatomy of a Production Incident: Our Postmortem Template
A blameless postmortem template, the seven sections we always fill in, and why “what would have caught this earlier?” is the question most teams skip.
-
How We Hire Senior Engineers (Without a Brain Teaser)
Our hiring loop replaces algorithm puzzles with paid work-sample projects, real code review and architecture discussion — and the patterns we use to judge senior engineering ability.
-
Offline-First Mobile Apps: Architecture Patterns
Local-first data, sync queues, conflict resolution and optimistic UI — the architecture patterns that make offline-first apps feel native, not aspirational.
in Engineering -
Cross-Platform App Performance: Where Time Actually Goes
Profiling shows time goes to four places: bridge cost, render commits, native module init and image decoding. Where to optimize each and where the wins actually are.
in Engineering -
LLM Cost Optimization: Cutting Tokens Without Cutting Quality
Six techniques that cut our LLM bill 40-60% without dropping coaching quality — prompt caching, smaller routing models, summarization, structured outputs and more.
-
Q2 2026 Engineering Review: What We Shipped
A transparent quarterly review — what we shipped, what we paused, where the time actually went, and what we are carrying into Q3.
-
When to Refactor: A Senior Engineer’s Decision Tree
Three questions decide whether to refactor or ship — and one of them is “is anyone planning to touch this in the next quarter?”. The decision tree we use at T-Square.
in Engineering -
Conversation State in AI Products: Patterns That Survive
Why stateless LLM calls plus structured turn state beat in-prompt history, and the conversation-state patterns we ship in production AI products.
-
Building Internal Tools That Don’t Slow You Down
Why we keep internal admin tools intentionally boring, the patterns that age well, and the temptation to over-engineer them that costs every team.
in Engineering