Denis Stetskov

Denis Stetskov @razoorka

About: Tech Lead & Full-Stack Engineer (Node.js, React, MySQL, AWS). 10+ yrs building scalable systems, mentoring teams & exploring AI, SaaS, and blockchain projects. Based in Kyiv, Ukraine.

Location:
Kyiv, Ukraine
Joined:
Mar 22, 2023

Denis Stetskov
articles - 11 total

Why Annual Reviews Don't Have to Be Bullshit

This week I ran annual reviews for six engineers. No awkward silences. No fishing for examples. No...

Learn More 2 0Dec 16

The Perfect Grammar That Defeats Us: Why AI Doesn't Need to Be Smart to Win

GPT-4 versus humans at political persuasion. The result: AI wins by 82%. Not through psychological...

Learn More 0 0Dec 16

From Cancer Cures to Pornography: The Six-Month Descent of AI

In March, Sam Altman promised AI would cure cancer. In October, he promised verified erotica: six...

Learn More 5 2Nov 18

The Systems That Survive: Four Years of War and the Math of Crisis Leadership

It’s 3:00 PM on October 10, 2025. I’m sitting in my apartment in Kyiv, working on my laptop, which is...

Learn More 6 1Oct 14

Supervising an AI Engineer: Lessons from 212 Sessions

The Moment Everything Broke Seventeen failed attempts on the same feature. Different...

Learn More 5 0Oct 7

The 90-Day Trial That Predicts Who Thrives (And Who Fails)

Most companies hire first and then determine if the candidate is in the proper role. We flip that...

Learn More 1 0Oct 6

What a Year-Long Hiring Overhaul Taught Us About Retention (Hint: It’s Not Money)

Last year, we spent 12 months completely redesigning our hiring process. Then another 6+ months...

Learn More 0 0Oct 3

How 4 Simple Signals in 1:1s Expose Burnout Before It Explodes

The Problem We All Know Six months ago, I sat in yet another 1:1 that felt like Groundhog...

Learn More 8 0Oct 2

Why Dashboards Lie And the Feedback System That Finally Gave Us the Truth

This week, two developers on my team shared feedback that highlighted a gap I’ve been working to...

Learn More 1 0Oct 1

The Brutal Reality of AI in Engineering: Lessons from Q3 2025

On September 29, 2025, Anthropic released Claude Sonnet 4.5. I spent that Monday running it through...

Learn More 1 0Sep 30

The Great Software Quality Collapse: How We Normalized Catastrophe

The Apple Calculator leaked 32GB of RAM. Not used. Not allocated. Leaked. A basic calculator app is...

Learn More 0 0Sep 29