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AI made engineers faster at writing code. Nobody talks about what it did to review.

Generation got cheap, judgment didn't: where the engineering bottleneck actually moved

August 11, 2026

I rolled my eyes at 'AI-powered everything' for a year. Then I found the arrangement that works.

From AI skeptic to a working division of labor: the model drafts, guardrails check, a human decides

August 5, 2026

An AI-enabled team isn't one where everyone has Copilot. It's one where your best people moved up the stack.

What AI-enabled actually means for an engineering team

July 31, 2026

Most AI adoption doesn't stall because the models aren't good enough. It stalls on delivery.

The missing pieces in stalled AI adoption are process, not model quality

July 29, 2026

ai-workflows3 min read

Managing 6 Engineering Clients with AI Workflows

How AI-augmented development workflows enabled managing 6 concurrent engineering clients across different agencies without sacrificing quality.

January 28, 2026

Engineering

For six weeks I've shown you how I build. Here's the simplest post of all: I'm open to work, and I'd like to build it for you.

Open to work, the capstone ask

August 28, 2026

A dozen products in production teach you one thing school never does: which corners are safe to cut, and which ones bill you later.

What a dozen live products taught me about tradeoffs

August 27, 2026

I never build the whole backend, then the whole frontend. I ship one thin slice that works end to end, then the next.

I ship vertical slices, not layers

August 26, 2026

Six weeks ago I built a scoring engine. Today it's the reason you and I are talking. Here's the whole loop.

From match-score to hire, the full loop

August 25, 2026

People think shipping 20+ apps solo takes speed. It takes the opposite: a set of rules I refuse to break.

The boring discipline that makes me fast

August 24, 2026

Open to work: remote, senior, full-stack. Here's the filter. If these things annoy you, we won't fit.

Open to work, remote, senior, full-stack

August 21, 2026

I built face recognition. For cows. The interesting part isn't the animals, it's that the model is a plug.

Animal biometric ID, pluggable embeddings

August 20, 2026

The production database was gone. What saved it was a decision I made on a random Saturday.

A full production database recovery, and the boring safety net that made it possible

August 20, 2026

When two AI agents pay each other, who audits the money? I gave them a 500-year-old answer.

Double-entry ledger for agent-to-agent payments

August 19, 2026

The engineers who write the most code are usually the ones I'd hire last.

Reuse as a hiring signal (contrarian)

August 18, 2026

The fix was two lines. Finding it took a day and a half. That ratio is the whole job.

Debugging is the slow part AI hasn't touched, and it's widening the gap between engineers

August 18, 2026

My TypeScript apps talk to Python ML services every day and neither side knows the other's internals. That's on purpose.

Typed wire contracts to Python sidecars

August 17, 2026

Open to work. Here's exactly what my first week on your team looks like, no ramp-up theater.

Open to work, what my week 1 looks like

August 14, 2026

Every morning I open an app I built and read the jobs it thinks I should apply to. This post came from one of them.

I dogfood, ApplyPulse finds my own jobs

August 13, 2026

Apple rejected my app. The reason still makes me wince, because it was completely fair.

Apple rejected my app, and the reason was fair

August 12, 2026

A camera at a gate reads your license plate and decides if it opens. I built that without sending a single image to the cloud.

Self-hosted computer vision (ALPR) at the edge

August 11, 2026

I volunteered to build the thing every engineer avoids: integrating with a Latin American tax authority.

LATAM e-invoicing nobody wants to build

August 10, 2026

I ran a security audit on one of my apps. 21 real findings in under an hour, 20 fixed the same day.

What an AI-assisted security audit found, fixed, and deliberately left for a human

August 10, 2026

When you hire me, you get more than a feature factory. You get the person who makes the next ten features cheap.

Open to work, hire the platform thinking not just the dev

August 7, 2026

Every SaaS I build is multi-tenant on day one. Retrofitting tenancy later is how startups get a data-leak headline.

Multi-tenant from day one

August 6, 2026

My rule for shared code: if the per-app adapter is longer than 50 lines, the abstraction is wrong.

The 50-line adapter rule

August 5, 2026

Unpopular opinion: most "AI bugs" are actually input-trust bugs wearing a costume.

Every external input is adversarial

August 4, 2026

One Express backend serves 13+ different apps. The reason it doesn't break them all at once is 17 contract tests.

One backend, 13+ apps, contract tests

August 3, 2026

I'm open to work, and I'll save us both time: here are the exact three roles I'm built for.

Open to work, the 3 roles I'm built for

July 31, 2026

Most teams build the web app, then rebuild the whole thing for mobile. I refuse to write it twice.

One core, web and React Native, no rewrite

July 30, 2026

The scariest bug in payments isn't a crash. It's paying someone twice and never knowing.

A payment state machine that can't double-spend

July 29, 2026

83 shared libraries. Dozens of apps depending on them. Here's why a change to one doesn't take down the others.

83 shared libraries without breaking apps

July 28, 2026

A vendor wanted a per-scan fee to read license plates. I replaced them in a weekend and the app never noticed.

Swapped a commercial vendor for OSS behind an interface

July 27, 2026

I'm open to work. Instead of listing skills, here's what I actually shipped in the last month.

Open to work, proof of weekly output

July 24, 2026

0.1 + 0.2 doesn't equal 0.3. If your billing code uses floats, you're already losing money.

Money as integers, fiscal-core e-invoicing

July 23, 2026

A job description tried to hijack my AI. I planned for that before it happened.

Treating scraped job posts as adversarial input

July 22, 2026

I run 20+ apps out of a single monorepo. The trick isn't speed. It's refusing to write the same thing twice.

20+ apps, one monorepo, one reuse discipline

July 21, 2026

The tool that surfaced your job posting to me? I wrote it.

I built the AI that matched me to your job

July 20, 2026

engineering3 min read

Automated Code Review: Git Hooks + Claude API in Production

Implementing an AI-powered code review pipeline using git hooks and the Claude API that catches 73% of issues before human review.

February 5, 2026

engineering3 min read

Building AI Agent Architecture From Scratch

How I went from a 2,300-line orchestrator to a composable multi-agent system using TypeScript, YAML configs, and factory patterns.

January 15, 2026

Career

career3 min read

You'll know if your senior hire was the right call by day 30. Here's the checklist.

What a real senior engineer owns in the first 30 days, and how to tell early

August 31, 2026

career3 min read

Most senior-engineer screens test for trivia. Here's how to screen for judgment instead.

A recruiter-friendly playbook for screening senior engineers for judgment, not memorization

August 28, 2026

Every senior JD lists a stack. Almost none say what the person will be trusted to decide.

The real mid/senior line is decision authority, and job descriptions never mention it

August 17, 2026

We interview seniors with binary trees on a whiteboard, then hire them to argue about API shapes.

Why algorithm interviews test for a job that doesn't exist, and what predicts who's good

August 7, 2026

Seven years ago I sat in a company office for the last time. Talent was never in the zip code.

Seven years of remote-first engineering from Costa Rica, and what distributed teams actually require

August 6, 2026

A recruiter asked for my resume. I sent it, along with the thing a resume can't do.

A resume asks you to trust; proof of work lets you check

August 3, 2026