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I'm Cesar Aguirre. I'm a [software engineer]({% post_url 2024-10-21-QuickCareerLessons %}), lifelong learner, [language enthusiast]({% post_url 2025-05-03-LanguageHacks %}), and avid reader.

What I do

I'm an independent software engineer based in Colombia (not Columbia) with more than 10 years of experience (I stopped counting!).

I [work remotely]({% post_url 2020-08-08-LessonsOnRemoteWork %}) as a backend engineer and digital writer. I specialize in building APIs and backend code with .NET technologies. Mainly C#, ASP.NET Core, and SQL Server these days.

Sometimes I code, always I write.

What I've done

I've worked in public services, electronic invoicing, and reservation management as a full-time employee and independent contractor.

Long time ago in a galaxy far away, I updated an invoicing platform to meet new government regulations, so users could keep working with minimal breaking changes.

What I write about

In 2018, I [started blogging]({% post_url 2020-07-18-HowIStartedBlogging %}) to share my learning as a software engineer. Coding tricks, tutorials, bugs I solved...

But over the years, this blog has become [my own time capsule]({% post_url 2020-07-20-TimeCapsule %}) where I share lessons, stories, books, and anything I find interesting.

[To recover from burnout]({% post_url 2025-05-13-PrioritizeHealth %}), in [November 1st, 2024]({% post_url 2024-11-01-SellingVsHelping %}), I started [writing daily]({% post_url 2026-04-08-WriteDaily %}). I haven't stopped since then.

All the words here are written by me. [A human, not by AI]({% post_url 2025-10-23-AIManifesto %}). For coding? That's a different story.

Fun facts

I’m a cat owner, [vim user]({% post_url 2020-09-14-LearnVimForFunAndProfit %}), [plain-text lover]({% post_url 2020-08-29-HowITakeNotes %}), and [Zettelkasten practitioner]({% post_url 2020-11-18-HowToTakeSmartNotes %}).

In my free time, I like to read books (on paper) and learn foreign languages. Currently, I'm learning Brazilian Portuguese. (Oi, gente! Tudo bem?)

Start here

If you don't know where to start reading, here are some of my most popular posts:

Career

  • [9 Subjects I've Changed My Mind About as a Software Engineer]({% post_url 2025-03-19-ChangedMyMind %})
  • [10 Ways to Stand Out at Work—Other than Work Hard]({% post_url 2025-02-26-StandOutAtWork %})
  • [10 Life-Changing Lessons I Learned the Hard Way—from the Worst Moment of My Career]({% post_url 2025-06-12-WorstMoments %})

Coding

  • [5 Lessons from My Team's Architect That Helped Me Become a Senior Developer]({% post_url 2025-10-25-LessonsFromMentor %})
  • [12 Hard Truths About Coding I Learned the Hard Way After 10 Years]({% post_url 2025-04-17-HarshTruths %})
  • [Three Tips to Read Code More Effectively]({% post_url 2025-03-26-ReadCode %})

AI

  • [What Coders Could Offer Instead of Writing Lines of Code If AI Takes Over]({% post_url 2025-12-21-Offerings %})
  • [A Quick Recovery Guide for AI-Dependent Coders]({% post_url 2025-06-28-AIRecovery %})
  • [The Numbers That Deflate the AI Hype About Replacing Coders—and Ease FOMO]({% post_url 2026-02-06-AIStats %})

Books

  • [Six Proven Principles to Learn Any Skill Faster (Without Spending 10,000 Hours)]({% post_url 2025-05-27-SkipTheLine %})
  • [Don't Write the Next Atomic Habits. Write Mini-Books]({% post_url 2025-10-07-MiniBooks %})
  • [8 Reading Habits I Learned from Ryan Holiday, the Stoic Book Master]({% post_url 2025-09-08-StoicBookReading %})

Self growth

  • [7 Surprisingly Simple Ideas That Changed My Life (And Could Change Yours Too)]({% post_url 2025-07-03-LifeChangingIdeas %})
  • [Two Years Ago, I Was Sick and Burned Out. But This Powerful Quote Changed It All]({% post_url 2025-05-13-PrioritizeHealth %})

Productivity

  • [I've Replaced My Second Brain With a Simpler Method]({% post_url 2025-06-22-SimplerNoteTaking %})
  • [5 Lessons I Learned from a World-Class Peak Performance Expert]({% post_url 2025-06-18-PeakPerformance %})

{% include 7day_email_course_longer.html %}

Thanks for reading!