Enterprise Retainer - Travelpro, United States
Two years of continuous Shopify engineering and CRO for a leading US travel brand. +22% mobile conversion YoY. Full Horizon theme architecture overhaul delivered.
The Situation
Travelpro is a brand that has earned serious market trust over decades. Their Shopify store needed to match that. When BrainBox came on board, the core challenge wasn't a single large problem - it was a backlog of compounding friction points across the storefront: conversion leaks on product pages, underpowered features that didn't reflect the sophistication of the brand, and a theme codebase that had accumulated complexity without consistent architecture standards.
Enterprise brands at this scale don't need a project team. They need a partner who knows the codebase as well as their own engineers do, can move fast without creating technical debt, and brings CRO thinking to every feature request rather than just executing specs.
That's the engagement model we operate under here.
By month three, BrainBox had documented the full theme architecture and established a Git branching and QA protocol that the client's internal team now follows as their own standard.
What We Built
This is a retainer engagement, not a single project. The work spans multiple workstreams running in parallel, across two-plus years of continuous delivery.
Continuous CRO Engineering
Ongoing conversion rate optimisation across the storefront - A/B test implementation, friction removal on PDP and cart, mobile conversion improvements, and progressive performance work. Every CRO recommendation is backed by analytics data, not assumption. We scope, build, test, and report in recurring sprint cycles aligned to Travelpro's internal calendar.
Custom Feature Engineering
Throughout the retainer, we have shipped multiple custom features that are not available through Shopify apps or the theme's native capabilities - including advanced product filtering logic, custom upsell mechanics, and a tailored promotional framework that supports Travelpro's seasonal campaign structure without requiring manual theme edits per campaign.
Theme Architecture Standards
Early in the retainer, we established version-controlled Git flow standards, a component documentation protocol, and a QA checklist for every theme push. This eliminated the rollback incidents that occurred before the engagement and gave Travelpro's internal team a reliable handoff point for any work that overlaps with their own capability.
Horizon Theme Overhaul
A comprehensive rebuild of the Horizon theme with updated architecture, a new component system, and advanced functional modules - including enhanced PDP logic, improved collection page performance, and a rebuilt header/navigation system. The rebuild was scoped to improve both conversion performance and developer ergonomics, so future feature additions require less engineering time.
Performance Optimisation
Ongoing Lighthouse score monitoring and performance improvement across all key templates - PDP, PLP, homepage, and cart. Work includes image pipeline optimisation, Liquid render weight reduction, and script load sequencing improvements. Core Web Vitals tracking is part of every sprint review.
The Results
The retainer model works because it removes the friction of scoping and contracting every individual change. Travelpro's team submits a priority stack; we deliver. The relationship has deepened to the point where BrainBox engineers are embedded in Travelpro's own sprint planning process - that's the level of trust a long-term retainer builds, and it's something a project-based engagement simply cannot replicate.
Active since 2023. Horizon theme overhaul completed Q4 2025. Retainer engagement ongoing.
Tech Stack
SHOPIFY
CRO & ANALYTICS
ENGINEERING STANDARDS
PERFORMANCE
Start a Similar Project
If your Shopify store needs a long-term engineering partner - not a one-off agency - let's talk about what a retainer looks like for your team.