Build
Custom Shopify applications
DSWD designs and delivers focused Shopify applications for merchant operations, storefront experiences, and the business rules between them.
Explore buildIndependent Shopify application consultancy
Senior application development for the systems your business runs on.
DSWD is Don Stefani, a hands-on consultant with 30 years of web-technology experience building Shopify applications, integrations, and operational tools for teams that have outgrown off-the-shelf software.
01 / Services
Three ways to move an application forward.
Focused engagements for building what is missing, connecting systems that need to work together, or improving software the business already depends on.
Connect
Catalog integrations and automation
DSWD builds dependable integrations that move, enrich, validate, and reconcile Shopify catalog data at the scale the operation requires.
Explore connectImprove
Application review and modernization
DSWD reviews the application, identifies the highest-risk constraints, and delivers a practical path to stabilize, recover, or modernize it.
Explore improve02 / Selected work
Applications built for real operating constraints.
Each project reflects a different business problem, delivery environment, and set of safeguards.
Catalog Data & Integrations
Large-Catalog Shopify Sync
A dependable pipeline that keeps a large external product catalog synchronized with Shopify, including verification after every write.
Read project detailsCatalog Intelligence & Governance
Shopify Taxonomy Alignment and Review
A controlled catalog-classification workflow that uses deterministic rules first, targeted AI assistance second, and human review before write-back.
Read project detailsStorefront & Checkout Experiences
Custom Product Flight Builder
A storefront experience that lets a shopper build a curated product flight, add it as one selection, and carry its rules safely through checkout.
Read project detailsClient recommendation
Client recommendation
“Don went above and beyond on his Shopify project, massively impressing the client. His technical expertise, clear communication, and positive, collaborative personality made working with him a pleasure. Highly recommended for any client or team needing a skilled Shopify developer.”