Frontend Engineering
Fix JavaScript Performance Issues — Without Re-launching Your Site
Build-pipeline + runtime fixes without breaking the design
Senior engineers · IST + EST overlapNDA on day 124-hour reply
The problem
What you're seeing
Your JS feels slow on interaction, the main thread is busy, and the profiler shows long-task hot spots.
How we fix it
Our approach
We profile against real hardware, replace synchronous hot-paths with async or worker-based code, and trim down third-party tag-manager bloat.
What you get
Concrete deliverables, no fluff
Every engagement ends with measurable, documented outcomes — no black-box agency reports.
Diagnostic report with reproducible steps
Implementation merged behind a PR you review
Verified fix across browsers and devices
Knowledge transfer to your engineering team
Tooling we use
Industry-standard stack, no proprietary lock-in
TypeScriptWebpackViteesbuild
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