Shopify Experts***********************US Based

Shopify Engineering
for
Marketing Teams

Capacity for rapid storefront iteration. Fractional or continuous, without new hires.

donaldross.com
Donald Ross Collection
Developed
jd-store.myshopify.com
JD Store Product Page
Optimized
Project Launch
BriefDone
DevelopDone
QADone
Deploy
Ongoing Support
IterateDone
OptimizeDone
Measure
MaintainNext

Supporting teams at

DR Sportswear
FFF
Jeff Dunham Store
JKL
AS Baking

Is Milexi right for you?

Designed for Shopify marketing and operations teams who need reliable technical execution.

Milexi is for you if...

  • You're a Shopify marketing or operations lead with ongoing technical work to manage
  • You don't have dedicated Shopify engineers on staff, or your internal team is already maxed out
  • You're outgrowing freelancers and want less context-switching and follow-up
  • You run frequent promotions and releases that require technical execution
  • Your growth depends on continuous Shopify work: custom builds, tracking fixes, app integrations, or campaign support
  • You need reliable execution now, but you're not ready to add headcount

We don't do (but can recommend partners)...

  • Digital Marketing
  • SEO
  • Paid Ads
  • Social Media
Featured Project

Donald Ross Sportswear

Shopify Plus migration and storefront engineering

+42%
Storefront Speed
2.8x
Conversion Increase
+17%
Average Order Value
Donald Ross Collection Shopify Plus Store
donaldross.com
Plus

Key Deliverables

  • Custom Shopify Plus theme development
  • Legacy platform data migration
  • Performance optimization and speed improvements
  • Enhanced checkout experience
  • Mobile-first responsive design

What We Build

Commerce engineering expertise across the full stack

Cart Optimization

Better cart experiences, higher AOV, fewer drop-offs. We redesign cart flows, build smart upsell logic, and test what actually moves the number.

Performance Engineering

Faster storefronts convert better. We optimize load times, Core Web Vitals, and rendering performance so every page earns its traffic.

Conversion Experimentation

Structured testing, implemented and measured properly. We build the variants, run the experiments, and help your team make decisions with real data.

Complex Integrations

ERPs, subscriptions, 3PLs, custom APIs — connected cleanly and built to last. No duct tape.

Storefront Architecture

From custom sections and templates to Hydrogen and headless builds. We design the technical foundation your store grows on.

Technical CRO Implementation

Your CRO team has ideas. We turn them into production-ready code, fast — so insights become revenue, not backlog items.

Use Cases

Stuff Milexi Handles For You

Campaigns & Launches

Your marketing calendar is full, but you need technical experts to execute the technical work.

  • Last-minute landing pages or promo updates
  • PDP or collection changes for new drops
  • Site prep for seasonal campaigns or product launches
  • Coordinating safe deploys so nothing breaks on launch day

Things Break (Quietly or Loudly)

Small issues turn into big distractions when no one owns them.

  • Cart or checkout issues after an app update
  • Theme conflicts or unexpected layout bugs
  • Broken scripts, tags, or third-party integrations
  • "Nothing changed, but something's wrong" problems

Tracking, Feeds & Data Integrity

Marketing performance depends on clean data, but it drifts over time.

  • GA4 or GTM events firing incorrectly (or not at all)
  • Pixel or conversion tracking discrepancies
  • Server-side tracking (CAPI) validation and fixes
  • Google Merchant Center or Meta catalog errors
  • Schema warnings affecting product visibility

App & Platform Complexity

Your stack keeps growing — and so do the edge cases.

  • Installing, configuring, or removing apps safely
  • Resolving app conflicts or performance issues
  • Updating workflows as tools change
  • Keeping Shopify Flow automations working as intended

Ongoing Improvements

You want the site to improve without blowing everything up.

  • Incremental UX and CRO-supporting changes
  • PDP and collection enhancements
  • On-site merchandising tweaks
  • Performance and reliability improvements tied to real blockers

Operational Oversight

You need confidence that Shopify work is being handled, even when you're not watching.

  • Prioritizing requests based on impact
  • Sequencing work so dependencies don't cause delays
  • Managing releases with minimal risk
  • Keeping a running view of what shipped and what's next

Acting as Your Tech Team

When you don't have in-house Shopify technical experts, we become your technical team.

  • Translating marketing needs into executed development work
  • Maintaining campaign context across weeks and months
  • Reducing back-and-forth with your Technical PM
  • Providing dedicated technical capacity with clear accountability

Quick Jobs

One-time Shopify work

Starting at$795

How Quick Jobs work

  1. 1Submit your request with access details
  2. 2We confirm scope and price (starting at $795)
  3. 3Work is completed and deployed
  4. 4You receive a short summary of what was done

No long-term commitment. No recurring billing.

Common Quick Jobs

  • Bug fixes and troubleshooting (cart, checkout, scripts, conflicts)
  • GA4 / GTM / pixel issues and event verification
  • Server-side tracking support (CAPI setup validation or troubleshooting)
  • Product feed fixes (Google Merchant Center / Meta catalog issues)
  • Schema validation and corrections
  • Small automations (Shopify Flow, tagging rules, operational logic)

What qualifies as a Quick Job

A request generally qualifies if it is:

  • One-time only
  • Clearly defined and scoped up front
  • Focused on a single area of the store
  • Reasonably completed without ongoing follow-ups
  • Not dependent on long-term monitoring or iteration

If a request expands beyond this, we'll flag it early and recommend an Ops plan or a custom quote — no surprises.

FAQ

Frequently Asked Questions

Everything you need to know about working with Milexi.

Milexi focuses on storefront engineering that improves conversion and performance. Most projects involve cart optimization, product page UX improvements, storefront speed optimization, integrations, and technical implementation for marketing initiatives. The team also supports full Shopify store builds and platform migrations, including WooCommerce to Shopify transitions.
Yes. Milexi has led multiple WooCommerce → Shopify migrations including storefront builds, product and customer data migration, and post-launch optimization. These projects typically include performance improvements, platform integrations, and preparing the storefront to support ongoing marketing and operational workflows.
Milexi works best with Shopify teams that have ongoing technical needs tied to marketing, operations, and storefront performance. Common projects include cart optimization, performance improvements, custom integrations, tracking and data fixes, platform migrations, and technical implementation for CRO initiatives. Many clients come to Milexi when they have a steady flow of Shopify work but do not want to hire a full internal engineering team. For smaller one-time fixes, Quick Jobs are available starting at $795. For ongoing work, Milexi typically operates as a fractional commerce engineering partner supporting continuous storefront improvement.
Yes. Many clients work with Milexi through ongoing engagements where the team provides dedicated commerce engineering capacity. This allows marketing and operations teams to continuously improve the storefront without hiring additional internal developers.
Yes. Milexi frequently works alongside growth teams and marketing agencies that need reliable Shopify engineering capacity. Agencies often lead strategy, creative, and campaign management, while Milexi complements that work by implementing the storefront changes required to support those initiatives. Many agencies bring Milexi in as the engineering partner behind storefront optimization and technical CRO implementation.
Freelancers often work task-by-task and require significant coordination from internal teams. Milexi operates more like a dedicated commerce engineering partner. The team maintains context across your storefront, campaigns, integrations, and technical roadmap so work can move faster with less back-and-forth.
Quick Jobs are one-time Shopify tasks that are clearly scoped and can be completed without ongoing iteration. Examples include bug fixes, tracking issues, product feed corrections, small automation workflows, or resolving app conflicts. If a request expands beyond a one-time task, Milexi will recommend an ongoing engagement or custom project plan.
No. Many clients work with Milexi specifically because they do not have dedicated Shopify engineers on staff. Milexi often acts as the technical team for marketing and operations groups, translating business requests into implemented storefront changes and managing deployments safely.
Why Milexi

Built on 18 Years of Real Execution

Before Milexi, we spent more than a decade inside fast-moving ecommerce and marketing teams, doing the technical work that kept things running. Along the way, two truths kept showing up.

1. Clear communication wins

Milexi is designed around proactive communication

  • Clear priorities
  • Regular updates
  • No guessing where things stand

You stay informed while we stay focused on execution.

2. Momentum matters

Milexi skips drawn-out onboarding and gets moving quickly

  • Fast assessment
  • Immediate prioritization
  • Work begins right away
  • Tight, reliable turnaround on tasks

No slow ramps. No unnecessary process. Just steady progress.

Mike Brennan

Mike Brennan is the founder of Milexi and co-founder of Developer Squad. He has 18 years of experience in web development and ecommerce, with the past decade focused on helping brands grow on Shopify through better execution, conversion optimization, and marketing operations.

Milexi was born from a simple realization: growing brands need reliable, skilled execution without the overhead or the risk. That's what we deliver.

Get Shopify work done without adding headcount.

Mike Brennan - Shopify Plus Engineer - 5.0 stars on ShopExperts

© 2026 Milexi. All rights reserved. Site by Developer Squad.