
Partner of 40+ Shopify Plus Merchants and App Owners
The All-in-One Shopify Agency for High-Growth US Brands
















Shopify Services that Deliver Real Results for US Companies
Tired of slow-moving projects and half-baked solutions? We take Shopify stores from “meh” to “money-making” in record time. No fluff, no delays - just expert execution.
Shopify dev that grows with you
We engineer solutions that grow with your business.Design that converts, not just looking pretty
We do design that keeps customers clicking and buying.Revenue optimisation done right
CRO isn’t about guesses—it’s about data-driven growth.Custom apps that give you the edge
If your store needs a custom solution, we’ll build it.Support that keeps you winning
Say goodbye to bugs, downtime, and outdated tech.

How Strategic Shopify Agency Partnership Transforms USA E-commerce
The American e-commerce landscape is vast and varied - what works in Texas doesn't work in New York, and California demands entirely different strategies than Florida. Most merchants underestimate this complexity until they've already invested months and a significant budget, learning hard lessons.
Partnering with us means skipping those mistakes. We bring cross-market expertise spanning regional preferences, payment behaviors, and logistics challenges nationwide. Your store launches with proven strategies tailored to your target markets, not generic templates.
We build fast, mobile-optimized stores with conversion strategies tested across U.S. markets, checkout flows designed for American payment preferences, and SEO built for competitive search landscapes.
The real value is strategic guidance. We help you identify which markets to prioritize, position against competitors, and invest for maximum ROI. You're gaining a growth partner who understands America's e-commerce ecosystem and knows how to win in it.

Market Position: Shopify's Growth in the USA
Shopify dominates America's e-commerce platform market with 29% market share, powering approximately 3 million U.S. stores - over 60% of its global footprint. The platform generated $292.28 billion in gross merchandise volume in 2024, with revenue growth reaching $8.88 billion.
Shopify's U.S. dominance is particularly strong among high-traffic merchants, capturing 28.8% market share among the top 1 million e-commerce sites. California alone hosts over 160,000 Shopify stores generating $57.7 billion in annual sales.
Growth drivers include an expanding app ecosystem with 16,000+ applications, integrated payment processing nationwide, and accelerating Shopify Plus enterprise adoption among mid-market companies. Black Friday-Cyber Monday 2025 saw record $14.6 billion in sales through Shopify merchants.
With consistent double-digit growth, expanding enterprise penetration, and unmatched U.S. market leadership, Shopify has established itself as the definitive platform choice for American e-commerce ambitions.
The High-Performance Shopify Agency for the US Market
Success stories worth mentioning

Next-Level Quality
Senior design, development, and CRO at your fingertips. Our professional, conversion-focused craftsmanship ensures you stand out in the marketplace.

Rapid Turnaround
Get design and development updates in days, not weeks. We prioritize efficiency to keep your store fresh and competitive.

Scale Up or Down
Pause anytime, or request one-off projects. Our flexible model adapts to your evolving store without rigid contracts.
Trusted by America's Leading Brands and Entrepreneurs

Very competent team who do the work diligently and professionally while still maintaining an agile approach

Matthew Webb
CTO, Top Screen MediaReady to Scale Your US Business with a Proven Shopify Partner?
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One-Off Shopify Projects
Need a high-impact Shopify launch, fast? Our One-Off Project service is perfect for MVP builds, theme customizations, brand refreshes, and key store upgrades. We offer:
Dedicated Shopify Partner
We handle your project end-to-end
48-Hour Updates
See real progress and give feedback quickly.
App/Theme Add-Ons
Custom functionality with easy integration.
Seamless Workflow
Communicate via Slack, Loom, or Notion.
Flat Price
Know your costs upfront, no hidden fees.
Their communication was exceptional, and their meticulous attention to detail in data gathering stood out.
Sam CutroniCEO, DataToolsFree UX audit worth $1,500 included - Most popular
Monthly Shopify Development
The fastest way to scale design and dev without hiring a full‑time team. Ideal for established Shopify apps, scaling DTC brands, and product‑led stores seeking consistent growth.
Full E‑Commerce Team Access
UX Designer, senior Shopify dev, and CRO specialist at your service.
Weekly Strategy Calls
We plan campaigns, product launches, and store optimizations together.
Fast Turnaround
Small tweaks or brand-new features - delivered in days, not weeks.
Expert Project Management
Communicate and collaborate instantly on Slack or Discord no long email chains
Flat Price
Know exactly what you’re paying upfront, with zero hidden fees
They communicate daily with us, so we’re always updated on how the tasks are progressing.
Andreas MüllerE-Commerce Manager, Emma & NoahPause or cancel anytimeWe're experiencing a high volume of bookings for . To get a response faster, email us directly on business@grumspot.com
Frequently Asked Questions About Shopify Agency in US
How do you handle sales tax when we're selling to customers in multiple states?
We configure your store to track economic nexus thresholds across all states, automatically calculate the correct sales tax rates based on where your customers are located, and set up proper tax collection in every state where you have nexus obligations. Multi-state sales tax is one of the most complex challenges for U.S. e-commerce businesses, with different thresholds, rates, and rules in each state. We automate the entire process so you stay compliant without drowning in paperwork.There are so many different state privacy laws now - how do you keep us compliant?
We implement privacy frameworks that satisfy the strictest state requirements (California, Virginia, Colorado, etc.), ensuring your store works across all states with comprehensive privacy laws while remaining manageable to maintain. Our approach includes universal privacy notices, consumer rights request workflows, opt-out mechanisms, and cookie consent systems that cover you nationwide. Rather than building separate systems for each state, we create one robust framework that handles the entire U.S. privacy landscape.Do we need to worry about the INFORM Consumers Act if we're not a marketplace?
The INFORM Consumers Act primarily affects online marketplaces like Amazon and Etsy that host third-party sellers, not direct-to-consumer Shopify stores selling your own products. If you're selling exclusively your own inventory through your Shopify store, this federal law likely doesn't apply to you. We help you understand which federal and state regulations actually affect your specific business model rather than worrying about laws that don't apply.Can you optimize our store for both coasts and everything in between?
Yes - we build stores that perform equally well whether customers are shopping from New York, California, Texas, or rural Montana by implementing fast load times, mobile optimization, and flexible shipping/fulfillment strategies. America's regional diversity requires understanding different consumer behaviors, preferences, and expectations. We create experiences that feel relevant to customers nationwide rather than optimized for just one region.What about all these state-specific consumer protection laws - do we need separate stores for each state?
No - we build one store that complies with the strictest state requirements, ensuring you're covered nationwide without needing separate configurations for each state. Our approach identifies the highest compliance standards across all states and implements them universally. This "comply with the strictest" strategy is more efficient than tracking 50 different state laws and ensures you're protected as you expand into new markets.What if I already have a Shopify store but it’s a mess under the hood?
Perfect. That’s our specialty. We’ve rebuilt stores running on outdated themes, legacy code, and scattered apps (like we did for Odd Bunch) and turned them into clean, scalable setups on Shopify 2.0 - without disrupting your business.Will my SEO be affected if I rebuild or migrate my store?
No, it won't. Our strict SEO migration process preserves your search rankings using 301 redirects, structured data, canonical tags, and sitemap updates. Most clients retain or improve SEO performance. Want to learn more about our SEO migration process?Do you offer ongoing support after the build is complete?
Yes! We offer monthly retainers that include priority access, rapid bug fixes, feature iterations, and ongoing dev support. Think of us as your dedicated Shopify engineering team - without the overhead.Can you integrate my store with third-party tools or an ERP?
Absolutely. We’ve built deep integrations with ERPs, fulfillment systems, CRMs, and more. Whether you need automated tagging, real-time syncing, or custom backend logic - we’ll make it happen.I’m new to Shopify. Can you help me from the ground up?
Yes—we love working with first-time merchants. From setup to strategy, from theme design to launch, we guide you through every step and make sure you’re confident using your store after go-live.How will we communicate throughout the project?
We use Slack for quick check-ins and async updates, with weekly video calls for milestones. You'll get regular progress reports, access to design previews, and full transparency the whole way. We move fast, but you’re never left in the dark.
Our Shopify CRO designs
See how we’ve redesigned Shopify stores to boost engagement, streamline UX, and maximize sales with before-and-after examples.
Stat of the day
The average cart abandonment rate online is about 70%
Baymard Institute (2023)
Supercharge your Shopify store
Uncover expert insights and proven tactics to help your Shopify store stand out, boost conversions, and delight customers.

Unlocking Growth The Benefits of Shopify Plus for Scaling Brands
Discover the key benefits of Shopify Plus. Learn how enterprise features like advanced customization, automation, and global tools help you scale faster.
- benefits of shopify plus
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Shopify Store Speed Optimization Checklist
Improve your Shopify store's speed with essential optimization techniques, including theme selection, image compression, and script management.
- ECommerce
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- User Experience

Common Shopify Performance Issues and Solutions
Learn how to tackle common performance issues in your Shopify store to enhance speed, improve user experience, and boost conversions.
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