Certified WordPress Expert Developer since May 2016
Certified WordPress Expert Developer since May 2015


Hi there! My name is Marcel and I’ve been developing for WordPress for over 10 years now, web development for more than 20 and native mobile development for 5. While currently based in the beautiful city of Porto, Portugal, I’ve accumulated a large experience in WooCommerce and e-commerce related websites in general, by developing custom plugins, adjusting themes, implementing full end to end online stores and building web-based and native mobile apps. I’m also very familiar with reporting, inventory management, mailing lists, high-performant e-commerce websites, importing and exporting data from and to APIs, and general e-commerce consultancy.

I’m fluent in English, German, Portuguese, and Spanish, I am always available through Skype and have a true commitment to every project I get into.

My goal is to work on solid, well-thought projects, and build long-term relationships. I want my clients to feel supported and confident about their projects and the technology behind it.


These are some of the customizations I’ve made while working with WordPress and WooCommerce:

  • All sorts of Gravity Forms and Formidable customizations;
  • Custom payment and shipping methods in WooCommerce;
  • Implementation of membership solutions;
  • External APIs integrations;
  • Implementation of cryptocurrencies as payment methods;
  • Bulk import/export data to/from WordPress and WooCommerce
  • WooCommerce Bookings integrations and customizations
  • ERP integrations
  • Site optimizations and bug fixes
Some Numbers

Additional information

As far as my work at Codeable is concerned, 80% of my new clients return for additional tasks. All my clients have reviewed me with 5 starts and their testimonials can be read further down this page.
I’ve been working on different products of my own, some of them sold to bigger companies, such as iThemes and Liquidweb. I also do a lot of consulting work for bigger e-commerce is driven business locally and internationally.
As a hobby, I like to do photography, shoot videos, fly around with my drone and play music (drums, guitar, bass guitar, and keyboards). I’m also involved with the local WordPress community where I gave 4 talks for the last 5 years at WordCamp Porto and helped organized 2018’s edition.

Project Portfolio


Here are some examples of projects I’ve worked for:

https://greatiamwear.com – complete e-commerce solution based on WooCommerce
https://crustclub.com – payment gateway integration, club membership and WooCommerce customization
https://marigoldsandonions.com – complete e-commerce solution based on WooCommerce
http://snughughome.com – complete e-commerce solution based on WooCommerce
http://agroaguiar.pt – custom seller’s backoffice dashboard solution
uTrus – creation of a crypto-payment mehod for WooCommerce


Here are some examples of apps that I’ve built:
Águas de Gaia
iThemes Sales Accelerator
WP Camps
Happy – Health Awareness Prevention

I’m 100% committed to every task I take, here are some of the client’s feedback of projects I’ve worked on.

Customer reviews

Marcel Schmitz 2018-12-22T17:20:01Z 5
Project rating:

Marcel, Marcel worked diligently to solve a problem that he encountered that he did not expect. He was good-natured and polite throughout. I would hire Marcel again. Cheers, Mark

Mark Rabkin
Marcel Schmitz 2017-02-21T05:51:07Z 5
Project rating:

Invent a 6 star rating for this guy! :)

Silvan Schaad
Marcel Schmitz 2016-11-07T19:22:30Z 5
Project rating:

Marcel is extremely easy to work with and so responsive. When problems arose he was attentive and saw it through to the end. I would love to work with Marcel in the future :)

Brad Hoen
Marcel Schmitz 2019-06-26T03:32:34Z 5
Project rating:

Great working with Marcel. He knows what l have to achieve and highly knowledgeable and does not only do what l ask but add value to the development and will use him again without a doubt

tongai Ndoro
Marcel Schmitz 2019-06-20T14:27:50Z 5
Project rating:

ERika Wynn
Marcel Schmitz 2019-06-19T15:52:16Z 5
Project rating:

Troy Kerr
Marcel Schmitz 2019-06-19T12:54:22Z 5
Project rating:

Marcel was extremely professional and knowledgeable. HIs communication around scoping of tasks and attention to detail was fantastic and as a UX designer I am pretty picky. Highly recommended. I would work with him again in a heartbeat

shelley armstrong
Marcel Schmitz 2019-06-17T20:42:11Z 5
Project rating:

Marcel is always professional, friendly, responsive and great at communicating his approach and progress.

Steve Smith
Marcel Schmitz 2019-06-14T17:51:20Z 5
Project rating:

Krista Bradford
Marcel Schmitz 2019-06-13T16:21:09Z 5
Project rating:

He is responsive, responsible, creative, and a great partner in figuring out how to get stuff done.

Krista Bradford
Marcel Schmitz 2019-06-11T14:17:05Z 5
Project rating:

Marcel has found a solution. Thanks.

Stefan Wolfarth
Marcel Schmitz 2019-06-10T14:16:08Z 5
Project rating:

The communication was really great. Altough sometimes he had to wait very long on my awnsers Marcel was really patient and did a great job! Thanks so much

Daniel Knoflicek
Marcel Schmitz 2019-06-07T14:51:44Z 4
Project rating:

Responsiveness was a bit delayed sometimes as I wished to have accomplished the task faster.

Hubert Stieve
Marcel Schmitz 2019-06-07T13:50:08Z 5
Project rating:

Marcel is an amazing communicator and extremely intelligent individual :)

Yan White
Marcel Schmitz 2019-06-04T14:32:13Z 5
Project rating:

Andrea Martinelli