

Uladzimir Vahner
@vahner.u
E-commerce Performance & Stability Engineer.
Speed is a business metric. Downtime is a tax.
I work with online stores that already have traction but hit a ceiling: slow product pages, unstable checkout, traffic spikes that break the site, hosting that can’t keep up, and tech debt no one wants to touch.
I run performance & reliability sprints: measure → prioritize → fix → validate. You get real numbers, a safer stack, and a plan you can keep using.
Speed is a business metric. Downtime is a tax.
I work with online stores that already have traction but hit a ceiling: slow product pages, unstable checkout, traffic spikes that break the site, hosting that can’t keep up, and tech debt no one wants to touch.
I run performance & reliability sprints: measure → prioritize → fix → validate. You get real numbers, a safer stack, and a plan you can keep using.
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