var, let, const: what's the real difference
Continuing the interview prep series. let and const are preferred over var — this is common knowledge. Let's look at why and how it all works.
JavaScript
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Blog
Frontend engineering: architecture, performance, tooling, and the web platform
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Hoisting and the Temporal Dead Zone in JavaScript
Continuing the interview prep series. After the event loop and closures, the next topic is hoisting. It comes up less often, but "variables get hoisted" is too weak an answer. Let's see how it works under the hood.
JavaScriptRead more →
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Closures in JavaScript: another interview classic
Continuing the interview prep series. After the event loop, the next must-know topic is closures. They come up constantly.
JavaScriptRead more →
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Event Loop: how JavaScript does multiple things while being single-threaded
Every time I'm job hunting, I refresh my knowledge on the basics, because the theory tends to fade over time. Event loop almost always makes it onto my review list, since it's one of the most likely topics on a technical interview. This time I decided not just to review it, but to write an article.
JavaScriptRead more →
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My secret to successful development
Pelmeni and frontend development are more connected than you'd expect. A technical guide.
EngineeringRead more →
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Atomic Design + FSD: can they work together?
The designer uses Atomic Design in Figma. The dev team wants FSD. Can you use both? What the official FSD docs say, where the friction is, and what actually works.
ArchitectureRead more →
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How I moved form management out of development
How I implemented a drag-and-drop form builder with Form.io, built custom components, solved circular dependency cycles, and took form creation out of the hands of developers.
EngineeringRead more →
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Atomic Design: structure for a component library
Hundreds of components in one folder, Button next to ConfirmModal, Input next to Header. What Atomic Design is, how its five levels work, and when three of them are enough.
ArchitectureRead more →
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Is old tech dead?
Every year someone publishes 'jQuery is dead'. jQuery didn't get the memo. On the gap between what's trending and what's actually running in production.
EngineeringRead more →
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FSD: when the components folder becomes a dump
Five developers, a year of work, 300+ files in the components folder. What Feature-Sliced Design is, how its six layers work, and when you actually need all of them.
ArchitectureRead more →
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AI in real development
Vibe coding gets all the attention, but I found the real value of AI somewhere completely different — in the boring work that used to take forever.
AIRead more →
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I dropped a production database
A war story from early in my career: I dropped a production database in the middle of a workday. What happened, how I fixed it, and what changed after.
EngineeringRead more →
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When a PM defines the solution
Early in my career I spent a week on a widget that could've been done in a day — because the PM baked the solution into the task instead of the problem.
EngineeringRead more →
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Accessibility basics
A few years ago I quietly stopped using a mouse. Then I opened one of my old projects and found the login form didn't work with the keyboard. The same form I once shipped as a finished feature.
FrontendRead more →
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First Vue production project after years of React
First Vue project in production after years of React. What surprised me, what felt familiar, and why the switch took a week, not a month.
Vue ReactRead more →