01 — Why it mattered
Mid-tier Android users in the UK were the majority of traffic — and the slowest path through the funnel.
A fast, mobile-optimised flight search site for UK customers, wired to live GDS fares.
02 — Problem
Search results took longer than the customer's patience. Filters re-rendered the world. Ad spend was leaking on bounces.
03 — Approach
Rebuilt the results page with a virtualised list, debounced filters, and a payload trimmed to what the device needs. Treated the slow Android as the design target, not the desktop.
04 — Build
Five weeks alongside the existing team. Most of the work was profiling, not coding.
05 — Outcome
Time-to-first-result dropped sharply on mid-tier Android. Bounce rates from paid landings improved. The team kept the new measurement habit.
TTFR
−55%
mid-tier Android
bounce
−14%
paid landing pages
budget
set
p75 LCP < 2.5s
06 — Reflection
Performance is a feature. You ship it on purpose, with a budget and a graph that the team agrees to defend.