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Mike Brennan

PRO
Shopify Plus Engineer
United States
English
Customer Rating:
5.0(3 reviews)
Starting Price:

$495.00

Local Time: 02:46 PM
Business Address
Address Verified

260 E. Main Street Suite 6904 Rochester NY 14606

Other Links
Phone Number

+17165080295

About

shopexpert since: January 2026

Add Engineering Capacity to your team

12+ Years Experience | Short & Long Term Projects | Delivered on Time & On Budget

Collaboration with founders, marketing or ops teams, and marketing agencies that need a reliable Shopify partner for development and engineering.

Recent work includes Shopify migrations, storefront optimization, and ongoing engineering support for brands such as:

Donald Ross Sportswear (WooCommerce → Shopify Plus migration, build and launch, ongoing customizations and app work supporting marketing and ad teams)

Jeff Dunham (WooCommerce → Shopify migration, build and launch, ongoing technical management)

Just Keep Livin’ by Matthew McConaughey (consulting, theme refresh, technical adjustments, and Giving Tuesday campaign support).

Faith Fight Finish by Dak Prescott (New Shopify Store build, launch, and ongoing support)

Work involves ongoing storefront optimization and technical implementation supporting growth teams and marketing initiatives.

Typical collaboration includes:

  • cart and checkout improvements

  • product page conversion enhancements

  • promotion and merchandising systems

  • storefront performance optimization

  • integrations and technical troubleshooting

Services Offered
Development & Custom Solutions
AI & Emerging Tech
Store Setup & Management
Marketing & Growth
Regions Served
North America
Europe
Oceania

Packaged Services

Shopify Conversion Optimization Sprint
Shopify Conversion Optimization Sprint
Starting Price

$1,499.00

Shopify Storefront Performance & Troubleshooting
Shopify Storefront Performance & Troubleshooting
Starting Price

$795.00

Fractional Shopify Engineering
Fractional Shopify Engineering
Starting Price

$2,499.00/month

Customer Reviews

Rating:
5.00
(3 Reviews)
5 stars
(3)4 stars
(0)3 stars
(0)2 stars
(0)1 star
(0)
Audrey D.
Autumn Sons Baking Co
Posted: Mar 18, 2026
Customer Rating:
5.00
Source:
invited

Mike and his team are truly the BEST. My husband and I have been working with him for many years, and he is always quick to respond, very professional, and provides exceptional results. We feel so lucky to have him on our team!

Project Value
$5,000 - $20,000
Anonymous M.
Shopify Brand
Posted: Feb 18, 2026
Customer Rating:
5.00
Source:
invited

Mike assisted in our efforts to move over from WooCommerce to Shopify and continues to integrate the backend of our site, so users have a seamless experience for their shopping needs.

Project Value
More than $100,000
Mariana P.
Jeff Dunham
Posted: Feb 13, 2026
Customer Rating:
5.00
Source:
invited

I have had the pleasure of working with Mike and his great team for over 5 yrs. He is quick to reply and always gives a really quick remedy. We have a great working relationship and would recommend his company to others.

Project Value
More than $100,000

FAQ

What types of Shopify work do you specialize in?

I specialize in storefront engineering that improves conversion and performance. Most projects involve cart improvements, product page UX, storefront speed optimization, integrations, and technical implementation for marketing initiatives. Also experienced with full store builds and store migrations from WooCommerce.

Do you handle Shopify migrations?

Yes. I’ve worked on multiple WooCommerce → Shopify migrations including full storefront builds, data migration, and post-launch optimization.

What size brands do you typically work with?

Most clients are growth-stage ecommerce brands running active marketing programs and looking to continuously improve storefront performance.