Services
Shopify engineering, scoped around the work that matters.
We help Shopify merchants build the custom logic, integrations, and checkout behavior that native settings and app stacks cannot cover.
Service 01
Custom Shopify development
Private apps, admin tools, theme improvements, Liquid and storefront work, and focused software that connects your store to the way your team operates.
Private apps
Build internal tools that fit your operations without adding another public app dependency.
Theme customization
Improve storefront behavior without turning the theme into fragile one-off code.
Merchant workflows
Automate repetitive operational steps around products, customers, orders, tags, and external systems.
Service 02
Checkout systems
Checkout is where merchant rules become business logic. We help design, build, review, and migrate systems for discount behavior, delivery rules, payment customization, validation, and related Shopify Functions work.
Functions and rule logic
Discounts, payment behavior, delivery behavior, validation, cart transforms, and rule orchestration for stores that need more than native settings.
Scripts migration support
Audit existing Script Editor behavior, document replacement requirements, and plan durable Shopify Functions or app-based paths forward.
Service 03
App integrations and migration support
Complex Shopify stores need cleaner connections between apps, data, and internal workflows. We reduce manual work and make the operating system easier to reason about.
App stack cleanup
Review overlapping apps, clarify ownership of business logic, and identify where custom work makes more sense.
Data flows
Connect Shopify to the tools that support fulfillment, reporting, merchandising, and customer operations.
Migration planning
Move store behavior, workflows, or data without losing the business rules hidden in the current setup.
Service 04
Cart Marshal implementation
Cart Marshal by Five Acre Code is our flagship Shopify app for checkout rules. We help evaluate fit, configure initial rules, and document the operating model.
Rule setup
Translate merchant requirements into discount, shipping, payment, and validation behavior with a controlled publish workflow.
Operational handoff
Document which rules exist, why they exist, and how your team reviews changes before they go live.
Retainers
Ongoing optimization and technical support.
For merchants with a steady backlog of Shopify improvements, integration work, and operational cleanup, retainers provide recurring engineering capacity without restarting vendor discovery every month.
Reliability
Monitoring, app compatibility review, issue response, and steady support for existing Shopify systems.
Optimization
Iterative improvements to workflows, checkout behavior, storefront UX, integrations, and reporting inputs.
Advisory
Technical guidance for merchants evaluating app choices, migration plans, and custom software decisions.
Next step
Send us the context. We'll respond with the clearest path forward.
Describe what you need Shopify to do and what is not working today. We will respond with questions, a scope, or a direct recommendation.
Contact Five Acre Code