Carlos Zappien

Shopify engineer

I'm an engineer in Computer Science with studies from the University of Texas, New Mexico State University and UC Berkeley. I've been in the Software industry for more than 20 years and with my team, our #1 goal is client satisfaction through collaboration, great communication, elegant code and solid solutions using the best software engineering practices. We can help you with theme and app customizations, private apps, API integrations and much more. Happy to be a part of the StoreTasker group of experts and we're looking forward to serve you!

4.92
Based on
265
completed projects.

"Fantastic, professional work! Helped us move a project over the finish line that other developers called "impossible""

- Cherie McCabe

Case Studies

Client

The company specializes in delicious coffee kegs and supplies. A client can buy a one-off or can also subscribe for a discount.

Problem

The client uses Bold Recurring Orders and wanted to have a way to offer a free keg for clients who have a valid subscription.

Solution

We implemented a customization to their Product template to check when a client has a valid Bold RO subscription and hasn't run out of free kegs. When they've run out of free kegs allotted for their subscription level, the regular price keg variant is enabled instead.

Marketplace Services

Coming Soon

Customer Reviews

4.92
Based on
265
completed projects.
Great work in a timely manner.
Amy Zalneraitis
Carlos was an amazing help. Carlos and his team are certainly among the best programming team I've ever worked with. He was patient, caring and passionate about my situation. Handled everything smoothly and efficiently. I would highly recommend
Louis Borrego
Great work completed on a tight deadline
Amy Zalneraitis
Great team.
Noah Gordon
Excellent work, responsive and got the job done quickly!
Caity
Carlos and his team are very dedicated to solutions-based work. This job has been more complex than expected and Carlos has been stellar at supporting it. I highly recommend him and his team for custom shopify work.
Laurie McConnell
Patience of Job! This is a very picky requirement and Carlos and his team have helped me turn an impossible task into a done task.
Laurie McConnell
Carlos is great to work with. He is responsive and gives reasonable and accurate timelines and expectations.
Ross Harrow
great job completing a complicated project with a tight turnaround
Amy Zalneraitis
This was our 3rd or 4th task w/ Carlos, and he delivered on time, and the theme updates were as expected. Highly recommend.
Scott Zakrajsek
Thank you for all your help! Happy to have these checkout motifications complete.
Sarah Baker
Always a pleasure to work with!
Dominic Sinesio
Carlos is an absolute expert, great communication, project was completed on time.
Alex Espinoza
I was ready to pay $$$ for a solution, yet during the FREE 30 minutes assessment , they saw it was just a minor fix and helped me to fix it for free. I wanted to write a review on how friendly, quick and professional they were, so I happily asked them to send me a cheap offer, so I can write one! Seriously made my day. Thank you - would definitely come back again!
Patrick Grütter
Working with Carlos on this project has been a terrific experience. I never had to follow up and he really listened and understood what we were trying to accomplish and provided excellent advice on options we should consider. I already plan to use him for future projects.
Bob Allred
great communication in helping to achieve our goals
Amy Zalneraitis
Carlos was simply amazing to work with.
Carlos Dantas
Excellent and professional work.
Morgan Smith
Working with Carlos has been great. His team completed the job and made additional detail changes based on our feedback. The only thing that could be improved for next time is timeliness. Job was finished a few days late. Carlos did communicate during that time so I knew what was going on. Thanks!
Edward Kusell-Zigelman
Working with Carlos was awesome. He took the time to walk through the use-cases with me and help identify any missing functionality we might need that I hadn't thought of. He and his team went above and beyond the call of duty to make sure they delivered a rock solid project. Even after completing the project Carlos was very responsive to any questions I had after the fact. I would definitely recommend Carlos and look forward to our next project together. Thanks!!!
Jose Otero
Carlos is great, we are looking forward to him and more of his work
Karen Lee
Carlos and the team did a fantastic job. Exactly what we needed, very timely, flexible and easy to communicate with. Highly recommended and looking forward to working with them more in the future.
Expert Toolkit
Always professional and easy to work with. Very organized and patient when I need time to think.
Christine Lies
Carlos is a great communicator! We accomplished what my client needed quickly. Thanks!
David Law
Great Guy. Finally I met my to go guy for all my Website needs. Great Job.
RYAN MALIK
Thanks for the quick turn... I appreciate it.
Michi Broman
Fabulous to work with. So professional, and will be using again for any future work we need. Thanks Carlos and team.
Chris Ashton
Working with Carlos was awesome! He was timely, the quality of the work was top-notch, and the pricing was fair. I would gladly work with Carlos again. SirDarryl
SirDarryl Roundtree
Great work & reasonably fast turnaround!
Karen Lee
Carlos is a true pro and brough our project to completion quickly and exactly as desired. Thank you!
Megan Lingo
Carlos and his team are very proficient in customizing Bold apps and very patient in finding workarounds to compensate Bold apps' limitations.
Karen Lee
Excellent, deep dive into consultation. We moved forward with the project and it has been very well done.
Morgan Smith
Carlos and Isaiah have always been extremely helpful when working on projects together. I have worked with Westmount Solutions for several years and will continue as we redesign our site.
Bob Allred
Carlos and his team patiently tackled a tough problem: integrating recurring payment orders from Shopify to an LMS. Issues related to webhooks made the task much more time consuming than estimated---and Carlos and team went above and beyond to deal with the unexpected roadblock. I will absolutely be hiring them again..
Kathryn
Carlos was great to work with!
Mike Gojcaj
Carlos and his team were fast, efficient, and easy to work with. They assisted with our request in a wonderful manner. Carlos likes to Skype to make sure everything is clear on both ends, which is very helpful. I would recommend working with him and his team.
Ashley Ludkowski
Great service and quality! Highly recommended.
Diqueos Tagaropulos
Work was excellent, keep it up
Morgan Smith
Had Carlos to a couple small UX tweaks to the theme, nice work as always,
Scott Zakrajsek
Another successful project working with Carlos in the books! He is a great resource and his experience with the Shopify platform and BOLD infrastructure really make his a huge asset to our team. Thanks again Carlos!
Jose Otero
Very professional work and result! Thanks! I would definitely recommend!
Petros Theocharous
Very quick to help me out with an urgent matter. Thanks!
Sally Lane
great work with very responsive team
Amy Zalneraitis
Carlos and his team are top notch. When we began, his quote was more than I planned on spending so he made a point to arrange a Skype call to talk through what I was actually asking for so I understood the complexity and time factors. That face-to-face made a difference (especially to a non-developer shop owner like myself). As someone who has run a creative services agency for years, I really appreciated the personal service, diligence, and professionalism—managing client expectations and consistently demonstrating that those expectations are truly a top priority is essential to keeping customers both loyal and confident in the $$ they are spending (NO MATTER THE SIZE OF THE PROJECT). This is a pro team that takes pride in their work and values the customer relationship. Can't really ask for more and I'm grateful for not having to settle for less!
Dominic Sinesio
Fantastic, professional work! Helped us move a project over the finish line that other developers called "impossible"
Cherie McCabe
Project was done in a timely manner. We will be using them in the future.
Devon Chandler
Project was completed in a timely and professional manner.
Caity
good work, responsive, helpful
Amy Zalneraitis
This is my second time hiring Carlos and his developers, extremely satisfied with their work and communication. Will hire them in the future for sure. Highly recommended!
ADAM
great service
Errol Milligen
Fantastic work and communication, thank you Carlos!
Greg Martin
Every interaction is Excellent!
Christine Lies
Roucha Roucha
Carlos did an excellent job, we had a bunch of front-end changes including a new homepage module accessible via the admin section of shopify. Good response time and quality work.
Scott Zakrajsek
Great teamwork--acted on feedback promptly and efficiently
Amy Zalneraitis
great work done in timely manner
Amy Zalneraitis
quoted 3 days, took almost 2 weeks -appeared like they barely worked on it and conversations were quite confusing which did not help. Was a complex project but was quite frustrating.
chris
Took weeks to do the work, and the work created other errors.
Matthew Hoffman
carlos and his team are fast, have great communication and will finish jobs all the way thru. definitely recommend.
Roucha Roucha
Carlos, went above and beyond for us, we made changes along the way, that he had no problem at all helping with. I would highly recommend him and his team to anyone. 5 stars from us!
GD
Great dev team. Very knowledgeable.
Noah Gordon
Going great.
Christine Lies
good job on implementing an important app as part our price increase rolllout. Completed on the required deadline with enough time for review.
Amy Zalneraitis
Carlos is a true Shopify expert. After going through requirements in detail (thank you for the great questions up front), the job was done on time and on budget. Collaboration was terrific and I really feel like we found the best solution for what we needed. Super grateful for the awesome work.
Michi Broman
Carlos and his team did a great job again. This was a theme modification to add some different video functionality. Very happy w/ the results.
Scott Zakrajsek
Awesome! Carlos and his team always come through.
Dominic Sinesio
Carlos is great at what he does and was very easy to work with!
Lucas Sailer
We appreciate your time and help.
Grant Cardone
Working with Carlos and his team has been an amazing experience. Carlos completely understood what I needed and created it. The cherry on top was the videos and written documentation that he provided to teach me how to use the new functionality that he created..
Daniel Robinson
great job and completed with a fast turnaround
Amy Zalneraitis
Looking forward to finishing up the project.
Brëwtality Info
Good work and worked with me to find a solution
Amy Zalneraitis
Carlos and his team are outstanding! Thank you for the tenacity to push through some ambiguity, and for the high quality results that you delivered.
SirDarryl Roundtree
3rd time we've worked w/ Carlos and the WS team. Excellent and fast.
Scott Zakrajsek
Difficult issue solved quickly, great job...!
Ryan
Carlos was great, very fast to complete the project and always available to talk! Will work with him again!
Christina
My job required a lot of modifications to create a new, very graphic, page to our online store. Carlos' team was great and communication was even better. A genuine thank you for a job well done.
Darryl Larson
Great experience - quick response to my initial inquiry, quick job completing the job, they understood exactly what I wanted. Thank you!
Annie Mielke
good work, and fast turnaround
Amy Zalneraitis
Highly recommended, great work and communication.
ADAM
This project took a little longer than we anticipated, missed black friday but it came out perfect. Thanks Carlos!
David Law
great service
Errol Milligen
Carlos is great. We had a seemingly simple option tweak for monogramming and it turned out to be a bit more complicated that originally thought. Carlos figured it out and made it work. Nicely done!
David Mitchell
Great work on this project.
Matthew Hoffman
Another great job completed. Carlos & his team are great to work with.
Kathryn
Easy to work with and completed the job as requested quickly and with minimal fuss.
Andy Sugden
Carlos got the job done quickly.
Kane Jiang
Great job as always! We can always rely on Carlos' team.
Dominic Sinesio
Carlos is absolutely great to work with. I can come to him with any question or customization request for my store, and can count on him to deliver amazing results! When we were first launching our store, we had trouble with the initial migration, but Carlos and his team took on the task with confidence, and were able to help us get our store live quickly! I can't thank him enough.
Alysia Kamrath

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