Valentyn Yefimov Blog
In-depth posts about architecture, developer experience, performance, and lessons from building production software.
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July 1, 2026 · 8min read
Technical search engine optimization is not only a marketing concern. Frontend code decides what crawlers can read, index, trust, and rank.
June 12, 2026 · 6min read
Angular v22 makes templates more expressive and safer: shared @switch branches, exhaustive union checks, inline arrow functions, and a preview of template-level error boundaries.
May 27, 2026 · 8min read
If your performance strategy stops at Lighthouse and console timers, you are missing real-user bottlenecks. PerformanceObserver gives you production-grade visibility.
May 20, 2026 · 7min read
Rendering strategy is a product decision as much as a technical one. Here is how to choose SSR, SSG, ISR, and Server Components without overcomplicating the app.
May 7, 2026 · 6min read
Most architecture charts stop at components, state, and API calls. Real scalability needs nine layers and three often-missing ones.
April 30, 2026 · 6min read
Scammers "hire" candidates quickly, then push them to pay for equipment or send money after a fake check deposit.
April 29, 2026 · 3min read
AI promised cheaper operations, but rising compute bills are forcing companies to ask whether humans are still more cost-effective for many tasks.
April 24, 2026 · 9min read
Five underrated JS/TS operators plus one advanced closure pattern that immediately improves correctness and readability.
April 20, 2026 · 7min read
Fake-star markets now target startup hype cycles, especially in AI, distorting one of the most visible credibility metrics in open source.
April 15, 2026 · 8min read
From fetchpriority and popover to translate and enterkeyhint, these native HTML features remove hacks and improve UX.
March 27, 2026 · 10min read
These three APIs handle modals, dates, and location with 0 KB and native browser reliability.
March 25, 2026 · 8min read
After 14 years since Elance and around $250,000 in platform fees, the account was permanently deactivated without a clear explanation or meaningful appeal path.
March 6, 2026 · 9min read
Attackers are using fake hiring flows and malicious repos to compromise developer machines and steal tokens, keys, and environment secrets.
February 25, 2026 · 8min read
Build a clean rotating gradient border button with @property, conic-gradient, and reduced-motion support.
February 25, 2026 · 7min read
TanStack Hotkeys solves cross-platform shortcut bugs, sequence handling, and type-safety pain points for modern React applications.