E-commerce Development
Online stores built to sell, load fast, and rank, from the first commit
Most e-commerce sites are slow, hard to crawl, and leak revenue at checkout because they were assembled from themes and plugins by people who never had to make a store actually convert. We build stores as engineering projects: the right platform for your catalog, a storefront tuned for conversion, a checkout that doesn't lose the sale, and a technical foundation Google can index cleanly. Then we hand you something that's fast on day one and still fast at 10,000 SKUs.
Every second of load time and every extra checkout field is revenue walking out the door
An e-commerce site isn't a brochure. It's a machine whose only job is to turn visitors into orders, and every technical decision either helps or hurts that number. A storefront that takes four seconds to paint loses a chunk of its traffic before the first product even appears. A checkout with a surprise shipping cost or a mandatory account signup abandons carts that were one tap from converting. A catalog Google can't crawl cleanly never earns the organic traffic that makes the whole business economical in the first place. The hard part is that these problems compound, and they look different in every category. Fashion brands need fast, image-heavy pages that don't tank Core Web Vitals. Home-goods sellers need variant and bundle logic that doesn't spawn thousands of duplicate URLs. B2B distributors need customer-specific pricing, net terms, and quote flows that generic themes were never built to handle. The platform you pick, the way product data is structured, and how the checkout is wired all decide whether the store scales or collapses under the weight of its own catalog. We build for that reality. Because we do the SEO too, we build search and speed in from the first commit instead of bolting them on after launch, and this work pairs directly with our E-commerce SEO, so the store you launch is one that can actually be found, not just admired.
Everything that goes into an e-commerce build
The right platform for your catalog, not the one with the biggest referral fee
There's no universally best platform. There's the right one for your catalog size, margins, integrations, and team. We help you choose with a clear head: Shopify for speed-to-market and hosted simplicity, WooCommerce for content-heavy stores and full control, BigCommerce for large SKU counts without transaction fees, Adobe Commerce for enterprise B2B and complex catalogs. We'll tell you honestly which one fits and what each will cost you over the long term.
- Shopify / Shopify Plus for hosted speed and fast launch
- WooCommerce for content-led stores and total control
- BigCommerce for large catalogs without per-sale fees
- Adobe Commerce (Magento) for enterprise and complex B2B
- Honest total-cost-of-ownership comparison before you commit
A storefront designed to move people from landing to checkout
A pretty store that doesn't convert is a liability. We design product and category pages around how people actually shop, fast-loading imagery, clear variant selection, trust signals where hesitation happens, and merchandising that surfaces the right products. Every template is built mobile-first, because that's where most of your traffic and most of your abandonment already lives.
- Product and collection templates built for conversion
- Mobile-first design where most carts are won or lost
- Fast, next-gen imagery that keeps Core Web Vitals green
- Trust signals, reviews, and clear variant selection
- Search, filtering, and merchandising that surface the right SKUs
A checkout that removes friction instead of adding it
The checkout is the most expensive real estate on your site: a single unnecessary field or hidden cost can sink conversion. We streamline the flow to the fewest steps that still capture what you need, wire up the payment methods your customers actually use, and make sure taxes, shipping, and fraud protection are handled cleanly. Guest checkout, express wallets, and transparent costs are the default, not an upsell.
- Streamlined, low-friction checkout flows
- Stripe, PayPal, Apple Pay, Google Pay, and BNPL options
- Guest checkout and express wallets by default
- Accurate tax, shipping, and fraud handling
- Abandoned-cart recovery wired in from launch
Clean product data is what makes a catalog scale, and rank
Messy product data is the root of most e-commerce technical debt: duplicate URLs, thin variant pages, broken filters, and a catalog Google can't make sense of. We structure your product data properly from the start, consistent attributes, sane variant and bundle logic, clean URL structures, and Product and Review schema so your listings are eligible for rich results. Get this right once and every future SKU inherits a foundation that works.
- Consistent attributes, taxonomy, and collections
- Variant, bundle, and configurable-product logic done right
- Clean URL structures and canonicalization
- Product, Offer, and Review schema for rich results
- Bulk import, feeds, and PIM integration for large catalogs
Connected to the systems that actually run your business
A store is only as good as the systems behind it. We integrate the ERP, inventory, shipping, and marketing tools your operation depends on so orders, stock, and customer data flow without manual re-entry. And we build with headroom, caching, CDN, and an architecture that holds up when a promotion or a press hit sends traffic spiking, instead of falling over at the worst possible moment.
- ERP, inventory, and OMS integration (NetSuite, SAP, and more)
- Shipping and fulfillment (ShipStation, 3PL, carrier rates)
- Email, CRM, and marketing automation (Klaviyo, HubSpot)
- Real-time inventory sync across channels
- CDN, caching, and architecture built for traffic spikes
Store builds backed by a real record of search and speed
Every major commerce platform
We build on the platform that fits your catalog, margins, and roadmap, and wire in the payments and tools around it.
How a Swarm e-commerce build runs
We learn your catalog, margins, and operations before we pick anything
A store built on the wrong platform is a mistake you pay for every month. We start by understanding your products, order volume, integrations, and team so the platform and architecture fit the business you actually run.
SKU count, variant complexity, and how it will grow.
The ERP, shipping, and marketing tools we'll integrate.
An honest fit-and-cost comparison, not a default answer.
We design the storefront and architect the data
Before a line of production code, we design the templates around conversion and plan the product-data structure, URL scheme, and integrations. Getting the blueprint right is what keeps the build from spawning technical debt later.
Product, collection, and checkout flows designed to sell.
Attributes, taxonomy, and clean, crawlable URLs.
How orders, stock, and customers flow between systems.
We build it fast, clean, and search-ready from the first commit
This is where being engineers matters. We build the store with speed, crawlability, and schema baked in (not bolted on after launch) and test everything in staging before it ever touches your live domain.
Core Web Vitals treated as a build requirement, not a fix.
Product markup and clean structure from commit one.
Checkout, payments, and integrations tested before go-live.
We launch carefully and prove it works in the real world
Launch day is where careless builds break. We ship with redirect mapping, payment and checkout verification, and day-one monitoring so any issue is caught in hours, then we confirm the store is fast, indexable, and converting.
Redirects mapped and rankings protected on migration.
Real test orders across every payment method.
Speed, indexation, and errors watched from launch.
We build storefronts engineered to scale and convert
Most e-commerce shops hand you a pretty theme and a list of plugins, then disappear when the site is slow and invisible in search. We build the store and own the technical foundation (speed, crawlability, schema, and a checkout that converts) because we're the engineers, and because we do the SEO that has to work alongside it. The store we ship is one that can actually be found and actually sells.
Talk to an engineer →E-commerce development looks different in every industry
Fashion & Apparel
Apparel lives and dies on imagery and variants: rich photography and video slow pages down, and every size-and-color combination threatens to spawn duplicate URLs and thin pages.
We build fast, image-heavy templates that keep Core Web Vitals green, structure size and color variants so they don't duplicate content, and wire in the reviews, size guides, and merchandising that turn browsers into buyers.
Learn more →Home Goods & Furniture
Home and furniture catalogs are full of bundles, configurable products, and high-consideration purchases where shipping cost and lead time make or break the sale.
We build bundle and configurable-product logic that stays clean, surface accurate shipping and delivery estimates before checkout, and design product pages with the detail and trust signals big-ticket buyers need before committing.
Learn more →Health & Beauty
Beauty brands live on subscriptions, replenishment, and repeat purchases, and they compete in a crowded, trust-sensitive market where reviews drive conversion.
We build subscription and replenishment flows, integrate reviews and UGC that build trust, and structure Product and Review schema so listings earn rich results and stand out in a crowded category.
Learn more →Electronics
Electronics catalogs are large, spec-heavy, and comparison-driven, with buyers who filter obsessively: the classic recipe for faceted-navigation crawl bloat.
We build filtering and comparison tools that are genuinely useful, control faceted navigation so it doesn't spawn millions of junk URLs, and structure detailed spec data cleanly so both shoppers and Google can parse it.
Learn more →Food & Beverage
Food and beverage sellers juggle perishables, subscriptions, local delivery zones, and compliance, plus imagery that has to sell taste through a screen.
We build subscription and recurring-order flows, handle delivery-zone and shipping logic for perishables, and design appetite-driving product pages that load fast and keep abandoned-cart recovery running in the background.
Learn more →B2B & Wholesale
B2B commerce breaks generic themes: customer-specific pricing, net terms, quote requests, bulk ordering, and gated catalogs are table stakes, not add-ons.
We build customer-specific pricing and account tiers, quote and bulk-order flows, net-terms and PO checkout, and ERP integration so wholesale ordering runs without a rep manually re-keying every order.
Learn more →What you actually walk away with
A fast, conversion-built store
Mobile-first templates and a checkout tuned to move visitors to orders, fast on day one and at scale.
A foundation Google can rank
Clean product data, crawlable architecture, and Product schema built in from the first commit.
Connected operations
ERP, inventory, shipping, and marketing integrated so orders and stock flow without manual re-entry.
A codebase you own
A store built to be maintained and extended, not a locked-in tangle of plugins nobody can touch.
See your site the way Google and AI do.
One instant scan. Two grades: how ready you are to rank on Google, and whether ChatGPT, Perplexity and Gemini can actually read and recommend you.
Frequently Asked Questions
Which platform should I use, Shopify, WooCommerce, BigCommerce, or Adobe Commerce?
It depends on your catalog, margins, and integrations. There's no universally best answer. Shopify and Shopify Plus win for speed-to-market and hosted simplicity; WooCommerce for content-heavy stores and total control over the code; BigCommerce for large catalogs without per-transaction fees; Adobe Commerce for enterprise and complex B2B. We model the real long-term cost of each against your specific business before recommending one, and we don't have a default platform we push on everyone because it pays us a referral fee.
Can you migrate my existing store to a new platform without losing rankings?
Yes, and this is exactly where careless migrations destroy years of SEO equity. We inventory every URL, build a 1:1 redirect map, preserve metadata and schema, QA against a full technical checklist in staging, and monitor from day one so anything that slips is caught in hours, not months. Because we do the SEO too, protecting your rankings through the move is built into how we work rather than an afterthought.
Will my store actually be fast, or slow like most e-commerce sites?
Fast, because we treat performance as a build requirement, not a post-launch fix. We build with next-gen images, lazy-loading, caching, and a CDN from the start, and hold Core Web Vitals targets like an LCP under 2.5 seconds. Speed isn't a plugin we bolt on at the end; it's designed into the templates and architecture from the first commit, which is the only way it survives contact with a growing catalog.
Do you handle integrations with our ERP, inventory, and shipping systems?
Yes. We integrate the systems your operation actually runs on, ERP and OMS like NetSuite or SAP, shipping and 3PL fulfillment, real-time inventory sync across channels, and marketing tools like Klaviyo or HubSpot, so orders, stock, and customer data flow automatically instead of being re-keyed by hand. We map these integrations in the discovery phase, before the build starts, so nothing gets discovered late.
Can you build B2B and wholesale features like customer-specific pricing and net terms?
Yes. B2B is where generic themes fall apart, and it's some of our favorite work. We build customer-specific pricing and account tiers, quote-request and bulk-order flows, net-terms and purchase-order checkout, gated catalogs, and the ERP integration that lets wholesale ordering run without a rep manually re-keying every order.
How does this work with SEO, do I need a separate agency for that?
No, and that's the point. We build search and speed in from the first commit, and the store pairs directly with our E-commerce SEO so what we launch is a store that can actually be found. You're not handing a marketer's SEO recommendations to a developer who can't implement them. We're the engineers doing both, so the work actually ships instead of dying in a PDF.
Build an online store that loads fast and actually sells
Tell us about your catalog and where you're headed, and we'll recommend the right platform, scope the build, and show you exactly how we'd make it fast, crawlable, and built to convert from the first commit.