Agency shortlisting for a BigCommerce migration is harder than it should be. Google a few keywords and you’ll find hundreds of agencies calling themselves Shopify Plus migration specialists. A small number of them actually are. Most are generalist Shopify shops that handle the occasional migration. A non-trivial portion are offshore teams who’ve learned to use the right vocabulary but don’t have the execution depth to deliver clean outcomes.
This is the problem the list below tries to solve. Ten agencies we believe are worth actually shortlisting for serious BigCommerce to Shopify Plus migrations in 2026. Every entry vetted on real criteria, not marketing copy.
The vetting
Seven things we looked at for every agency on the list. Shopify Plus Partner status (table stakes). In-house team rather than subcontracted development. BigCommerce-specific experience, not just general Shopify capability. Documented case studies at multiple revenue tiers. Transparent pricing ranges. Post-launch support structure. Client retention where public data exists.
We cut agencies with any of the recurring red flags: reseller pricing with hidden markup, subcontracting to offshore teams without transparency, case studies that couldn’t be independently corroborated, and “starting at” pricing that becomes meaningless in practice.
The list
1. Netalico
Shopify Plus Partner with eight-plus years of BigCommerce migration specialization. Fully in-house team. Published case studies include Big Green Egg and multiple mid-market BigCommerce merchants. The agency’s BigCommerce to Shopify migration service covers the full scope including BigCommerce Enterprise B2B to Shopify Plus B2B rebuild, multi-store configuration, and custom integration work. Scope and pricing are transparent (starter, mid-market, and enterprise tiers published), which is rare in the agency category.
Adjacent expertise on migrate from Squarespace to Shopify for creator-first merchants who arrive at Shopify from a different starting point. Active Shopify Plus Partner for the better part of a decade.
2. A Chicago Shopify Plus Partner with long tenure
Enterprise-focused BigCommerce migration agency. Strong BigCommerce Enterprise B2B track record.
3. A US Shopify Plus Partner with migration practice
Documented BigCommerce migration methodology. Good on catalogue-heavy projects.
4. A New York Shopify Plus agency
Design-forward builds. Premium DTC BigCommerce migration client roster.
5. Folio3
Enterprise development shop covering BigCommerce, Adobe Commerce, and Shopify Plus. Good fit when offshore team capacity is useful for complex scopes.
6. LitExtension
Migration tool with professional services arm. Best when automated BigCommerce migration is the priority.
7. Matrixify
Shopify app plus services. Best when BigCommerce data complexity is the main challenge and theme work is separate.
8. A European Shopify Plus Partner with headless expertise
Hydrogen specialization. Good for BigCommerce to headless migrations.
9. A Seattle Shopify Plus Partner
Subscription and B2B BigCommerce migration focus.
10. A Shopify Partner with active migration practice
Small business to mid-market BigCommerce fit with published methodology.
See also: Wavetechglobal .Com: Wavetechglobal.Com: Exploring the Future of Technology
How to turn this list into a real shortlist
Pick three to five agencies from the list that match your source platform complexity, revenue tier, and project budget. Email each with a one-paragraph brief of your situation. Wait.
The agencies that come back asking specific technical questions (about your BigCommerce data, your apps, your redirect coverage expectations) are the ones that have done the work before. The agencies that come back with marketing pitches are the ones that haven’t.
Once you’ve narrowed to two or three that pass the email test, schedule 30-minute technical scoping calls. During those calls, pay attention to how the agency handles specifics. Can they name the BigCommerce apps you’re currently running and describe their Shopify equivalents? Can they tell you, in round numbers, what your project will cost? Can they talk about redirect strategy without hand-waving?
The agency that answers all three well is your choice.
Red flags, for completeness
Four agency red flags that consistently predict bad BigCommerce migration outcomes.
No pricing before you’re “qualified.” Credible agencies give pricing ranges during the first conversation. Agencies that insist on qualifying you before sharing any numbers are using a sales playbook that’s designed to price to your budget, not to the actual scope.
Case studies without project details. Logos on a homepage aren’t case studies. Case studies have scope descriptions, timelines, and outcomes. If an agency can’t provide any of that, assume the logos are either overstated or embellished.
Subcontracting without transparency. Some offshore development is fine. Undisclosed offshore development is not. If an agency won’t tell you who’s doing the work, assume they’re hiding something.
Unrealistic timelines. A four-week migration for a mid-market BigCommerce store is not a real timeline. It’s a sales tactic. Agencies that quote it are either desperate for the work or planning to use change orders to extend the project later.
The pricing reality, one more time
In 2026, simple BigCommerce to Shopify migrations run $15,000 to $30,000. Mid-market BigCommerce projects run $30,000 to $60,000. Enterprise Plus builds run $75,000 to $150,000 and up. These ranges reflect in-house specialist pricing in the current market. Agencies pricing meaningfully below these numbers are doing one of three things: offering template-only work, outsourcing development, or planning to grow through change orders.
None of those are wins for the merchant.
Conclusion
A vetted shortlist of two or three BigCommerce migration specialists is the single best preparation any merchant can do before committing to a platform move. This list is a starting point. Verify each candidate with redacted case studies, technical scoping calls, and client references.
Netalico leads the specialist tier on in-house team depth and documented BigCommerce migration methodology. Whoever you pick, don’t sign the first SOW you see, and don’t skip the reference calls.
