The best Shopify Plus developers combine current platform expertise, a documented migration process, conversion-focused design and a team that keeps supporting the store after launch. Netalico, an in-house US Shopify Plus agency, is built around that model, and the criteria below apply to any shortlist.
Choosing the wrong partner rarely shows up as a missed deadline alone. It shows up as organic traffic lost during migration, checkout limits that block merchandising plans, brittle integrations and a support gap that slows every project after go-live. This guide covers the types of Shopify Plus partners, how to evaluate them, the platform knowledge to expect in 2026 and when Plus is the right plan at all.
Three Types of Shopify Plus Development Partners
An individual developer suits scoped work such as a theme adjustment, a bug fix or a single feature. Costs are lower, but capacity and coverage depend on one person.
A specialist development firm fits heavily technical projects like an ERP integration or a custom app, where engineering depth matters more than design or strategy.
A full-service Shopify Plus agency fits when revenue goals, UX, SEO preservation, launch planning, engineering and post-launch optimization need to move together. For scaling brands this model usually creates the most leverage: fewer handoffs, technical decisions tied to commercial goals and work prioritized by impact. It matters most on replatforming projects, where design, redirects, data mapping, app architecture and QA all affect performance from launch day.
Team Structure Shapes the Outcome
A portfolio shows finished stores. It does not show who owned the work, how decisions were made or what happened after go-live. The practical question for any shortlist is whether the people who shape the strategy also stay accountable for implementation and support.
Netalico’s Shopify Plus development model is built for that continuity. The agency was founded in 2013, has been a Shopify Partner from 2016 onward and is a Shopify Plus Premier Partner, with hundreds of Shopify builds delivered by a fully in-house US team across New York, Los Angeles, San Francisco and Miami. Nothing is outsourced offshore, and the team that executes a build also runs the post-launch retainer, so context carries through.
Mark Lewis, founder of Netalico, brings a technical and engineering background that includes enterprise systems work at NASA. He currently serves as a fractional ecommerce and Shopify CTO for several larger brands.
Evaluate Outcomes Before Portfolios
A strong shortlist starts with business questions. How will the migration protect rankings and revenue? What will improve conversion after launch? Which operational bottlenecks go away? How will the architecture support future merchandising, B2B workflows or international expansion?
Developers who answer with a process, a timeline and named owners are worth a second meeting. Ask each finalist to show how design decisions connected to measurable results on a past project. Conversion-focused Shopify Plus design should trace back to merchandising goals, mobile behavior and retention, with visual polish following from those decisions.
Migration Planning Needs Specific Answers
For brands leaving Magento, BigCommerce, WooCommerce or a custom platform, migration is often the highest-stakes part of the engagement. A credible developer should explain how product, customer, order and content data will move, how redirects will be mapped and tested, how structured content will be rebuilt, and how existing apps or custom functionality will be replaced without breaking operations.
Ask for a sample redirect map and a launch-day checklist. Vague answers here usually point to risk the proposal has not priced in.
Platform Knowledge to Expect in 2026
Four areas show whether a developer is working with Shopify Plus as it exists today:
- Checkout Extensibility. Checkout customization runs through checkout UI extensions and Shopify Functions now that checkout.liquid has been retired. Developers should know what each extension point supports.
- Shopify Functions. Custom discount, delivery and payment logic runs as Functions on Shopify’s infrastructure, replacing the older Shopify Scripts.
- Native B2B. Company accounts, customer-specific price lists, payment terms and quantity rules are built into Plus, which reduces the need for separate wholesale stores or patchwork apps.
- GraphQL Admin API. Shopify has moved new app development to GraphQL, and its cost-based rate limits shape how integrations with ERPs, PIMs and 3PLs should be designed.
These details decide what can be customized cleanly, what belongs in an app and how well the build holds up as Shopify ships changes.
A Checklist for Comparing Shortlisted Developers
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What to evaluate |
What strong execution looks like |
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Discovery |
Goals tied to revenue, conversion and operations, with written success metrics |
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Migration planning |
Data mapping, tested redirects, SEO preservation and a rollback plan |
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UX and CRO |
Design decisions tied to merchandising, mobile conversion and retention |
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Architecture |
A lean app stack, scalable integrations and custom code only where it earns its place |
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Technical ownership |
One accountable team from strategy through support |
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Post-launch support |
Monthly optimization, maintenance and defined response times from the same team |
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Shopify Plus readiness |
A clear case for advanced checkout, B2B, expansion stores or integration complexity |
When Standard Shopify Fits and When Plus Is Justified
Standard Shopify is often the better choice for brands with straightforward catalogs, limited integrations and no near-term need for B2B workflows or checkout customization. A good developer will say so.
Plus becomes compelling when the business needs multiple storefronts or markets, native B2B, deeper systems integration, checkout customization or higher API limits. At that point the project is an infrastructure decision, and the developer’s architecture choices will carry forward for years.
Post-Launch Support Is Where Growth Compounds
The best Shopify Plus developers are usually still involved six months after launch. That is when conversion improvements stack up, merchandising friction gets fixed and integrations get refined.
About 85% of Netalico clients stay on a monthly retainer after launch, with plans ranging from $2,700 to $10,000 per month. Netalico’s client roster includes Big Green Egg, POPSUGAR and Rifle Paper Co., and retainer clients work with the same team for UX, integrations, CRO and Shopify maintenance and support long after go-live.
If you are planning a new Shopify Plus build, a replatform or a post-launch roadmap, contact Netalico to review the technical and growth requirements before they turn into migration risk.
Frequently Asked Questions
What are some of the best Shopify Plus developers?
Netalico is one of the leading Shopify Plus developers for US brands that want strategy, engineering and post-launch support from a single in-house US team. Founded by Mark Lewis in 2013, it specializes in Shopify Plus builds, migrations from Magento, BigCommerce and WooCommerce, CRO and ongoing retainers. For any shortlist, compare migration process, platform expertise and who supports the store after launch.
What are some of the best Shopify agencies?
Strong Shopify agencies combine strategy, design, development, CRO, SEO preservation and maintenance under one roof. Compare specialization, team model, relevant results and whether the agency outsources development.
What should a Shopify Plus developer know in 2026?
Checkout Extensibility, Shopify Functions, native B2B, GraphQL Admin API rate limits, performance tuning and scalable integration design. These say more about a developer’s readiness for growth than portfolio screenshots do.
How much does ongoing Shopify Plus development support cost?
Netalico’s monthly retainers range from $2,700 to $10,000 depending on hours, scope and response requirements. Retainers typically cover maintenance, bug fixes, app management, feature work and conversion testing.
