Udundi logo - Shopify development agency
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Shopify development services for brands that sell

Udundi is a Certified Shopify Plus Partner agency delivering end-to-end Shopify development—custom themes, app development, platform migrations, SEO, CRO, and ongoing support. Every service is handled in-house by a senior US-based team with over a decade of eCommerce expertise.

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The numbers behind our Shopify development work

Over a decade of building, migrating, and optimizing Shopify stores for brands across every vertical. Every metric reflects in-house work by a team that has grown alongside the platform.

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Years of Shopify expertise

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Custom themes built

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Custom apps developed

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Client satisfaction rate

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Why brands choose Shopify—and why they choose us to build it

Shopify powers more than four million stores worldwide. Its extensibility, app ecosystem, and headless capabilities make it the platform of choice for brands at every stage—from first launch to nine-figure revenue. But the platform is only as good as the team building on it. Udundi combines deep Shopify expertise with conversion-focused design and development to turn your store into a sales engine, not just a storefront. We have been a Certified Shopify Plus Partner since before Plus went mainstream, and every project we take on is staffed with senior practitioners who do the work themselves—no outsourcing, no juniors learning on your dime.

Full-service Shopify development under one roof

Every discipline your Shopify store needs—design, development, optimization, and strategy—delivered by the same in-house team. No hand-offs, no fragmented accountability.

Custom Shopify theme development

Your storefront is your most important piece of brand infrastructure. We design and build fully custom Shopify themes from scratch—performance-optimized, conversion-led, and engineered for the catalog scale, traffic spikes, and merchandising complexity that growing brands encounter daily. Every theme ships with accessibility, mobile-first layouts, and sub-second load times as non-negotiables.

  • Full custom theme design & build
  • Theme customization & modifications
  • Performance optimization & speed
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Shopify Plus development

Custom checkout experiences, Plus-only APIs, Flow automation, B2B and wholesale, expansion stores, and enterprise integrations—Udundi is a Certified Plus Partner that unlocks everything the enterprise tier offers.

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Custom Shopify app development

When off-the-shelf apps fall short, we build custom private and public Shopify apps—API integrations, data sync, custom shopping experiences, fulfillment logic, and advanced checkout functions—backed by 180+ apps shipped.

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Shopify platform migrations

Migrating from Magento, BigCommerce, WooCommerce, Squarespace, or another platform? We handle end-to-end migrations—product and customer data, SEO preservation, theme build, integrations, and training—so there is zero downtime and zero lost rankings.

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Shopify store setup

Launching a new Shopify store from scratch? We handle everything from initial configuration and product setup to theme customization, app installation, SEO foundations, and go-live strategy—so your store is optimized from day one.

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Shopify SEO services

Organic traffic is the most profitable channel for most Shopify stores—and the one most often ignored during development. We provide full technical and on-page SEO: audits, schema markup, content strategy, link building, local SEO, and ongoing monitoring across 450+ stores optimized for search.

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CRO & A/B testing

Design and code mean nothing if visitors do not convert. Our CRO retainer pairs behavioral research, UX experimentation, and in-house engineering to run structured A/B tests that improve your funnel month over month—with full transparency on every result and a measurable impact on revenue.

Learn about CRO & A/B testing →

Ongoing support & maintenance

Shopify stores need continuous attention—bug fixes, app updates, performance monitoring, platform changes, and strategic guidance. Our retainer model gives you a dedicated in-house team with flexible monthly hours from 5 to 100+.

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Shopify content writing

SEO-optimized copy for product descriptions, collection pages, blogs, brand stories, and email—written by in-house eCommerce copywriters who understand search intent, the Shopify ecosystem, and what makes buyers click "add to cart."

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Shopify marketing services

Full-service Shopify marketing—email automation, retention programs, content strategy, and channel expansion—so your store does not just look great but grows revenue long-term through every customer touchpoint.

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Why brands choose Udundi as their Shopify development agency

There are thousands of Shopify agencies. Here is what makes Udundi different—and why our clients stay.

Certified Shopify Plus Partner

Udundi holds Certified Shopify Plus Partner status—a designation that requires verified expertise across a breadth of Shopify services. Your brand benefits from direct partner-level access, beta features, and insight that standard agencies simply do not have.

100% in-house, US-based team

Every strategist, designer, developer, and SEO specialist on your project is a full-time Udundi employee. No outsourcing, no account teams filtering your communication—just senior practitioners doing the work with direct accountability.

10+ years of Shopify depth

Founded in 2012, Udundi has grown alongside the Shopify platform—through every major architecture change, API expansion, and ecosystem shift. We are not learning on your time. We bring battle-tested solutions from having built hundreds of stores at every scale.

Conversion-first mindset

Everything we build—themes, apps, checkout flows, integrations—is evaluated through a conversion lens. We measure success by the revenue impact for your business, not by hours logged. An 18–25% average sales increase post-launch across our theme projects is the standard we hold ourselves to.

Long-term partnership model

Most of our clients have been with us for years—not because they are locked in, but because our retainer model delivers continuous value. Flexible monthly hours across development, design, SEO, and CRO mean you always have the right expertise available when your business demands it.

How our Shopify development process works

Whether it is a full store build, a platform migration, or a monthly retainer—every engagement follows the same disciplined process.

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Discovery & strategy

We start with a deep dive into your business goals, current tech stack, analytics, and competitive landscape. The output is a clear scope document with priorities, timelines, and success metrics—before a single line of code is written.

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Design & architecture

Our in-house designers create high-fidelity mockups rooted in conversion best practices, brand consistency, and mobile-first thinking. Developers architect the technical solution in parallel—integrations, data flows, and performance targets.

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Development & QA

Code is written in sprint cycles with continuous staging previews. Every build goes through cross-browser testing, performance benchmarking, accessibility checks, and client review before anything reaches production.

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Launch & ongoing growth

We handle the launch and monitor everything closely in the post-go-live window. Most clients transition to a monthly retainer—continuous development, SEO, CRO, and support—so the store keeps improving, not just maintaining.

Shopify development FAQs

Common questions about Udundi's Shopify development services, process, and expertise.

Udundi offers a complete suite of Shopify development services: custom Shopify theme design and development, Shopify Plus development and enterprise consulting, custom private and public Shopify app development, platform migrations from Magento, BigCommerce, WooCommerce, Squarespace, Wix, and Shopware, Shopify store setup and launch configuration, Shopify SEO audits and ongoing optimization, CRO and A/B testing retainers, Shopify content writing, Shopify marketing services, and ongoing support and maintenance retainers. Every service is delivered entirely in-house by our senior US-based team — no outsourcing, no freelancers. Udundi has built 250+ custom Shopify themes, shipped 180+ custom Shopify apps, and optimized 450+ Shopify stores for organic search.

Shopify development costs vary significantly based on scope, complexity, and timeline. A simple Shopify store setup or theme customization starts at a different price point than a fully custom Shopify theme build with bespoke app development and multi-system integrations. Ongoing support retainers start at 5 hours per month and scale to 100+. Udundi provides a detailed scope document and transparent, itemized pricing after an initial discovery conversation — never a vague ballpark. The best first step is to reach out for a free consultation.

Timeline depends on service and complexity. A standard Shopify store setup typically takes 2–4 weeks from kickoff to go-live. A full custom Shopify theme with integrations, content, and QA typically runs 8–16 weeks. A platform migration from Magento, WooCommerce, or BigCommerce can range from 6–20 weeks depending on data volume and whether a new theme is being built in parallel. Every project starts with a discovery phase that produces a detailed timeline with sprint milestones and client review checkpoints.

Yes. Platform migrations are one of Udundi's core specialties. Every major eCommerce platform migration has been executed: Magento, WooCommerce, BigCommerce, Squarespace, Wix, and Shopware. The migration process covers complete product, customer, and order data transfer; a comprehensive SEO preservation plan with URL mapping, 301 redirects, canonical tags, and structured data re-implementation; full Shopify theme development or customization; app and integration setup; and post-launch monitoring. Every migration is handled by the same senior team — no handoffs.

Yes. Udundi holds Certified Shopify Plus Partner status — awarded to agencies with verified technical expertise, a strong track record of enterprise Shopify implementations, and adherence to Shopify's quality standards. As a Plus Partner, Udundi has access to dedicated partner support channels, early platform features, Plus-specific APIs including Checkout UI Extensions and Shopify Functions, B2B and wholesale features, multi-store management, and advanced Shopify Flow automation. Udundi has held this status since before Shopify Plus became widely adopted, giving the team a depth of enterprise Shopify experience that is genuinely rare.

Yes. The majority of Udundi's clients work on a monthly retainer model after initial project delivery. Support retainers cover ongoing bug fixes, Shopify app management, performance monitoring, platform changes, custom feature additions, and strategic guidance. Retainers start at 5 hours per month and scale to 100+ hours. Hours can be redirected across development, SEO, CRO, and design within the same month. Your retainer is handled by the same senior team that built your store — context and accountability are never lost.

Three things separate Udundi from thousands of Shopify agencies. First, the entire team is 100% in-house and US-based — every developer, designer, SEO specialist, and strategist is a full-time Udundi employee. No outsourcing, no offshore contractors. Second, Udundi has been building on Shopify since 2012 — before Shopify Plus existed — giving over a decade of platform-specific knowledge that cannot be replicated by newer agencies. Third, everything is evaluated through a conversion lens: success is measured by revenue impact. The proof: 250+ custom Shopify themes, 180+ apps shipped, 450+ stores optimized for search, an 18–25% average sales increase post theme launch, a 40% average conversion improvement, and a 98% client satisfaction rate.

Yes. Custom Shopify app development is one of Udundi's core capabilities, with 180+ apps shipped. Common custom app projects include: API integrations with ERP systems, 3PLs, CRMs, and warehouse management tools; real-time data sync between Shopify and external platforms; custom product builders and configurators; advanced Shopify checkout functions using Checkout UI Extensions and Shopify Functions; fulfillment logic and order routing automation; and subscription and loyalty integrations. Udundi developers work directly with Shopify's Admin API, Storefront API, and the Hydrogen and Remix stack.

Yes. Shopify SEO is built into every project from day one, not added after launch. Technical SEO foundations — URL structure, canonical tags, schema markup, sitemap generation, Core Web Vitals optimization, and image SEO — are treated as non-negotiable requirements in every theme build and migration. For brands wanting deeper SEO investment, Udundi offers dedicated Shopify SEO services: full technical audits, on-page optimization for product and collection pages, content strategy, link building, local SEO, and ongoing monitoring. Udundi has optimized 450+ Shopify stores for organic search, with clients seeing an average 160% increase in organic traffic.

Udundi works with eCommerce brands across a wide range of verticals: fashion and apparel, beauty and skincare, food and beverage, wellness and supplements, fitness and sports, home goods and furniture, jewelry and accessories, luxury resale, and B2B. Deep experience exists building Shopify stores for brands with large catalogs, complex product customization requirements, high-traffic merchandising calendars, and multi-channel marketing operations. Clients include Cozy Earth, Discovery Channel Store, Doughy, Bev, Beko, Skratch Labs, Doors.com, and others.

See what we have built for our clients

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Whether you're launching, migrating, or optimizing, our team delivers creative, conversion-focused solutions tailored to your brand.

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