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The hardest bugs aren't in your code. They're in your assumptions. Most production incidents trace back to 'this should never happen.' It does. #Backend #ProductionCode #Engineering

Most production outages I've debugged weren't complex bugs. Someone forgot a timeout. A retry loop ran forever. A circuit breaker was never added. Boring infra kills prod. #Backend #ProductionCode #Engineering

The best engineers I've worked with don't avoid complexity — they know when it's necessary and when it's just ego in disguise. #Engineering #SoftwareDevelopment #ProductionCode

Most outages I've seen weren't caused by bad architecture. They were caused by missing timeouts, unchecked retries, and the assumption that the network is reliable. Defaults will betray you. #Backend #ProductionCode #Engineering

AI won't replace senior engineers — it'll expose them. The real edge is knowing when AI output is wrong. New post 👇 moyano.cl/ai-wont-replac… #AI #Engineering #Backend

The best engineers I've worked with don't just write good code — they write code their team can reason about at 2am during an incident. Readability isn't a preference. It's risk management. #Engineering #ProductionCode #Backend

SP500 en zona clave, oro consolidando cerca de máximos y BTC mostrando fuerza relativa. El mercado siempre da pistas. El problema no es la señal — es que la mayoría no está prestando atención. #trading #mercados #análisis

The most expensive bugs I've shipped weren't logic errors — they were assumptions that went unchallenged for years. Document your assumptions like your APIs. #ProductionCode #Engineering #SoftwareDevelopment

Your service isn't slow because of a bad algorithm. It's slow because of N+1 queries, missing indexes, and synchronous calls that should be async. Fix the boring stuff first. #Backend #ProductionCode #Engineering

Your microservices aren't failing because of architecture. They're failing because you skipped observability. You can't fix what you can't see. #SystemDesign #Backend #Engineering

Most system failures aren't caused by bad code — they're caused by unexamined assumptions. Document your dependencies. Question your defaults. The architecture you have is a graveyard of implicit decisions. #SystemDesign #Backend #Engineering

Most code review feedback is about style. The real review happens at 2am when your service is down. Write code for the person on-call — it might be you. #ProductionCode #Engineering #Backend

The most expensive bugs I've seen weren't in the code. They were in the requirements nobody questioned. Ask the uncomfortable questions before writing a single line. #Engineering #ProductionCode #SoftwareDevelopment

Your AI pair programmer is confidently wrong sometimes — here's how to work with it without getting burned. 🧵 moyano.cl/your-ai-pair-p… #AI #Engineering #Backend

Senior engineers don't ask 'can we build this?' They ask 'should we, and what breaks if we do?' That 2-minute question has saved months of work more times than I can count. #Engineering #SoftwareDevelopment #Tech

🥇 Oro en $4,812 y Bitcoin en zona clave: el mercado habla. ¿Sigues tu sistema o tus emociones? 👇 itrader.website/2026/04/el-oro… #trading #mercados #análisis

Most 'scalability problems' I've seen weren't scale problems — they were premature abstraction problems. You over-engineered the wrong layer. #SystemDesign #Backend #Engineering

Premature abstraction is worse than duplication. Seen codebases impossible to change because someone was clever early on. Wait until the pattern is obvious — then abstract. #Backend #Engineering #ProductionCode

The codebase that kills you isn't built by idiots. It's built by smart people under pressure, each making locally reasonable decisions. No one designed the mess — it emerged. #SystemDesign #Backend #Engineering

Most outages aren't caused by bad code. They're caused by systems that work perfectly — until two perfectly fine things happen at the same time. Design for composition of failures, not just individual ones. #SystemDesign #Backend #Engineering