eCommerce DevelopmentCatalogue to checkout
We build Custom storefronts
and move live stores onto them
Storefronts rarely fail on design. They fail on variant modelling, tax and shipping rules, and stock that disagrees between channels — so that is where we start, then work outward to the pages customers see.
- Custom storefronts
- Shopify builds
- Magento & Adobe Commerce
- Multi-vendor marketplaces
- Headless commerce
- Checkout and payment rails
- Tax, shipping and returns rules
- Migrations that keep orders and rankings
- Catalogue modelling
- Variant-first
- Checkout and payments
- PSP-agnostic
- Stock across channels
- One ledger
- Peak trading days
- Load-tested
- Catalogue
- Variants and bundles
- Options, kits, pricing tiers
- Checkout
- Fewer steps to pay
- Cards, wallets, local rails
- Inventory
- One source of truth
- Web, POS, marketplaces
- Migration
- Orders and URLs intact
- Mapped data, redirect plan
Platforms we build on
- Shopify
- Magento
- WooCommerce
- Custom
Catalogue, checkout, stock, tax, shipping — the parts customers never see
Everything behind the buy button has to agree
The product page is the easy half. Under it sits a catalogue that has to model every option, bundle and kit you actually sell, a pricing layer that knows about tiers and promotions, and a stock number that has to be right at the moment somebody taps Pay.
Then the rules. Tax by destination and product class. Shipping by weight, zone and carrier, with the free-delivery threshold that marketing changed last week. Returns that put the stock and the money back where they came from. None of it is interesting, and all of it is where stores quietly lose margin and support hours.
We build on Shopify, Magento, WooCommerce or a custom stack, and choose between them on your catalogue shape, order volume and how much of the checkout you need to control. If you already trade, the first conversation is usually about moving the store without dropping orders, customer history or search rankings.
- Catalogue, variants and bundles
- Checkout and payment rails
- Tax, shipping and returns rules
- Stock across web, POS and marketplaces
- Load testing before peak trading
- Replatforming and data migration
What we build
The eight jobs behind a working store
08Service tracks
Custom Storefronts & Checkout
For catalogues and order flows that do not fit a platform's assumptions. Configurable products, contract pricing, quote-to-order, split fulfilment — built as first-class parts of the model rather than bolted on with metafields.
- Configurable & Bundled Products
- Quote & Contract Pricing
- Split & Partial Fulfilment
- React
- Next.js
- Node.js
Shopify & Shopify Plus
Quick to launch and opinionated about checkout, which is a feature until it isn't. We build themes, private apps and the integrations that tie Shopify to your ERP, WMS and marketplaces — and flag early where checkout changes need Plus.
- Theme & Storefront Work
- Private & Public Apps
- ERP, WMS & Marketplace Links
- Shopify
- Liquid
- GraphQL
Magento & Adobe Commerce
Deep catalogue, multi-store, native B2B — company accounts, shared catalogues, requisition lists. It earns its place on complicated catalogues and charges for it in hosting, build times and upgrade work. We plan for both.
- Multi-Store & Multi-Currency
- B2B Accounts & Price Lists
- Extensions & Version Upgrades
- Magento 2
- PHP
- MySQL
WooCommerce Builds
WordPress-first commerce, where catalogue and content live in one place. It suits editorial-led stores and subscriptions. We keep the plugin count low, because every extra plugin is another thing that can break at checkout.
- Store & Subscription Setup
- Plugin & Theme Customisation
- REST API Integrations
- WordPress
- WooCommerce
- PHP
Marketplace Platforms
Multi-vendor platforms bring their own problems: seller onboarding and identity checks, split payouts, commission rules, per-vendor shipping and returns, and someone to arbitrate when an order goes wrong. The storefront is the small part.
- Vendor Onboarding & Payouts
- Commission & Fee Rules
- Ratings, Returns & Disputes
- Custom
- React
- Node.js
Headless Commerce
A storefront of your own talking to commerce APIs. Worth it when you need control of rendering, several front ends, or a CMS your editors will actually use. Not worth it when a themed platform would have done — headless moves work, it doesn't remove it.
- API-First Storefronts
- Cached, CDN-Served Pages
- One Catalogue, Many Channels
- Headless
- GraphQL
- CDN
Mobile Commerce
Native apps and progressive web apps sharing the same catalogue, cart and customer account as the web store — with wallet payments, saved cards, and notifications tied to order state rather than to a campaign calendar.
- Native Apps for iOS and Android
- Installable Web Storefronts
- Wallet Payments & Order Push
- React Native
- PWA
- Firebase
Replatforming & Migration
Moving a store that is already taking orders is the riskiest job on this page. Products, variants, customers, order history and URLs all have to land intact, redirects are mapped before cutover, and the old store keeps trading until the new one has proved itself.
- Data Mapping & Dry Runs
- Redirect Maps for Old URLs
- Cutover & Rollback Plan
- Migration
- Data Transfer
- CI/CD
Tell us what your catalogue looks like and where the current store hurts.
A first call about the catalogue, the order flow and whether the platform is the problem.
Beyond the basics
The pieces worth adding once the basics work
Headless CMS for Content Teams
Content and catalogue served over APIs, so the same product copy, campaign block or size guide reaches the web store, the app and a marketplace listing without being rewritten three times.
Support That Arrives With the Order
Chat and helpdesk integrations that open with the order, the shipment status and any return already attached — so nobody asks the customer to read out an order number.
AR and 3D Product Views
Room placement and 3D spins for furniture, eyewear and anything where getting the size wrong is the reason people send it back. Worth the asset cost where a return costs more.
Shoppable Video and Live Selling
Video-led merchandising with add-to-cart in the player and stock checked as it plays, so a sell-out during a live stream doesn't turn into a hundred cancelled orders.
Search That Handles Real Queries
Search tuned for how people describe products rather than how the catalogue names them: synonyms, misspellings, attribute and size queries, and spoken input on mobile.
Wallets, Cards and Local Rails
Cards, Apple Pay and Google Pay, UPI, bank transfer and buy-now-pay-later, picked per market — with retries and a fallback route so one gateway having a bad afternoon doesn't close checkout.
Product Imagery at Catalogue Scale
Automated crops, modern formats and CDN delivery so thousands of SKUs still load quickly, plus generated variants where every colourway would otherwise need its own photo shoot.
ERP, WMS and Inventory Sync
Two-way integration with the systems that actually hold the truth about stock, price and fulfilment — with reconciliation, so an oversell is caught before it ships rather than after.
Pricing and Promotion Rules
Price lists per customer group or market, tiered and volume pricing, promotion stacking rules, and the guardrails that stop two campaigns combining into a discount nobody signed off.
Infrastructure Built for Peak Days
Autoscaling, cached category and product pages, queued order processing and planned degradation — decided before the sale and load-tested against traffic shaped like your last peak.
Choosing a platform
Four ways to build, and what each one costs you
A platform is a set of decisions someone else already made. The useful question is whether those decisions match your catalogue, your order volume, and how much of the checkout you need to control.
Shopify
Hosted SaaSHosted, quick to launch, and it takes checkout, PCI scope and uptime off your plate. In return you accept its data model and its rules: checkout itself is only editable on Plus, and app subscriptions accumulate as you grow.
- Stores
- 4M+
- Market
- SMB to enterprise
- Uptime
- Vendor-run
- Themes and Storefront Builds
- Private and Public Apps
- Checkout Extensibility (Plus)
- Markets and Multi-Currency
- POS and Marketplace Channels
Magento
Open source / AdobeThe deepest catalogue and B2B model of the four: multi-store, multi-source inventory, company accounts, shared catalogues, requisition lists. It is also the heaviest to host, build and upgrade, and it needs people who already know it.
- Stores
- 250K+
- Market
- Mid-market and B2B
- Uptime
- Yours to run
- Adobe Commerce & Magento Open Source
- B2B Accounts, Quotes, Price Lists
- Multi-Store and Multi-Currency
- Multi-Source Inventory
- Headless via GraphQL
WooCommerce
WordPressCommerce as a WordPress plugin. The cheapest way to start and hard to beat when content drives the sale. Its ceiling is the plugin stack: every extension is another thing to upgrade and another place checkout can break.
- Stores
- 5M+
- Market
- Content-led stores
- Uptime
- Yours to run
- Content-Led Commerce
- Subscriptions and Memberships
- Plugin and Theme Customisation
- REST API and Headless Front Ends
- Multi-Currency via Extensions
Custom Build
Built for youWorth it when the order or pricing model has no equivalent in a packaged platform — configurable manufacturing, contract pricing, unusual fulfilment. You own every decision, including the ones a platform would have made for you.
- Market
- Whatever it has to be
- Uptime
- Yours to run
- Headless Storefront
- Service-Based Order and Stock Model
- APIs Shaped Around Operations
- PWA or Native Front Ends
- Scaling Sized to Your Traffic
How we work
Five things we get right before the storefront looks good
Checkout Built to Finish
Fewer steps, address autofill, guest checkout, saved payment methods, and error states that say what actually went wrong. Every extra field between the cart and the confirmation page is a share of orders that never arrive.
A Catalogue Model That Holds
Options, variants, bundles, kits and per-market pricing modelled properly at the start. Retrofitting a variant structure onto a live catalogue means rewriting URLs, feeds, and every integration that reads them.
Payments With a Small Blast Radius
Card details go to the gateway rather than through your servers, keeping PCI scope as narrow as it can be. Tokenised cards, 3-D Secure where the market requires it, and webhooks reconciled against your own order records.
One Stock Figure, Every Channel
Web, app, POS and marketplaces reading and writing the same inventory, with reservations held at the cart and reconciliation against the warehouse — because two channels selling the last unit is a support problem, not a rounding error.
Someone There on Sale Day
Monitoring on the paths that matter — add to cart, payment authorisation, order creation — with a runbook, alerting, and people who already know your store when the traffic arrives.
How the engagement runs
What working with us actually looks like
Developers Who Have Shipped Stores
People who have built on Shopify, Magento, WooCommerce and custom stacks — and who will tell you when a requirement is a fight with the platform that you do not need to have.
Short Iterations, Working Software
Two-week cycles with something usable at the end of each. You see the catalogue, then the cart, then checkout — rather than a demo assembled on the last day.
SEO Decided in the First Sprint
URL structure, canonical rules for variants and facets, product and review structured data, and server-rendered pages — settled while changing them is still cheap.
Testing Against Real Order Scenarios
Cross-browser and device passes, plus the cases that actually break a store: partial refunds, failed authorisations, out-of-stock at payment, duplicate webhooks, and tax edge cases at borders.
Clear Commercial Models
Fixed scope, time and materials, or a dedicated team. Whichever you choose, the estimate names the assumptions it rests on — and we say so when one of them stops holding.
Dates That Respect the Trading Calendar
Retail has immovable dates. We plan releases around your peak season and freeze changes ahead of it, rather than shipping a checkout change the week it matters most.
Security and Data Handling by Design
TLS everywhere, encryption at rest, least-privilege admin access, audit trails, and payment flows designed to support your PCI DSS obligations — with scope agreed per engagement.
Support After Launch
Monitoring, patching, dependency and platform upgrades, and a way to reach someone who knows the system when orders stop going through at nine in the evening.
Building a new store, or trying to get off the one you have?
Catalogue review · Platform recommendation · An honest read on the migration
From first call to first order
How a store gets from scope to trading
Five stages. The durations below are the ranges we usually see — a large catalogue, a migration, or a complicated tax and shipping picture pushes them out, and we say so before starting rather than halfway through.
Discovery & Platform Choice1–2 weeksCatalogue, orders and constraints
We work through the catalogue as it really is — options, bundles, kits, per-market pricing — along with order volume, how fulfilment works, which systems already hold the truth about stock and customers, and the tax and shipping rules you trade under. That is what decides the platform, not a preference.
Key Deliverables
- Catalogue & Order Model
- Platform Recommendation
- Integration Map
- Scope & Roadmap
Design & Checkout Flow2–3 weeksProduct pages, cart, checkout
Wireframes and interface design, with most of the attention on the paths that carry money: search and filtering that survive a real catalogue, a product page where variant switching behaves, a cart that recovers, and a checkout with as few required fields as your rules allow.
Key Deliverables
- Wireframes & Sitemap
- Product & Listing Designs
- Checkout Flow
- Mobile-First Layouts
Build4–12 weeksTwo-week cycles, working software each time
Catalogue and pricing first, then cart, then checkout and payments, then the integrations. Performance is handled while building — cached category pages, image pipeline, Core Web Vitals — rather than being a phase bolted on at the end.
Key Deliverables
- Releases You Can Use
- Payment & Tax Integration
- ERP, WMS & Channel Links
- CI/CD Pipeline
Testing1–2 weeksReal orders and real failure modes
End-to-end order testing across devices and browsers, including the awkward cases: declined cards, 3-D Secure challenges, partial refunds, out-of-stock at the moment of payment, duplicate webhooks, cross-border tax. Then a load test shaped like your last peak rather than a round number.
Key Deliverables
- Cross-Browser & Device Passes
- Payment & Refund Scenarios
- Load Test Against Peak Traffic
- Accessibility Checks
Launch & AfterOngoingCutover, monitoring, and the next change
For a migration: a dry run against real data, a redirect map covering every old URL, and a rollback plan agreed before anyone touches DNS. After launch, monitoring sits on the order path, analytics get wired up, and the first weeks of real traffic fill the next backlog.
Key Deliverables
- Cutover & Rollback Plan
- Redirect Map & SEO Checks
- Analytics & Monitoring
- Post-Launch Backlog
Where the rules differ
Same checkout, very different constraints
What changes between sectors is rarely the cart. It is the catalogue rules, who is allowed to buy what, and what has to be recorded when they do.
Retail and Direct-to-Consumer
Fashion, electronics, home. Deep variant matrices, seasonal catalogue churn, returns arriving in volume, and one stock figure shared between a website, a shop floor and two marketplaces.
Healthcare
Medical supply, pharmacy and device stores, where prescriptions, batch and expiry tracking and restricted products shape the catalogue. Built to support the privacy obligations that apply to you, with scope agreed per engagement.
FinTech
Application journeys more than shopping carts: eligibility checks, disclosures shown at the right step, and a record of what the customer actually saw before they agreed to it.
Courses and Training Sales
Course catalogues, cohorts and seats, institutional purchase orders, subscription and licence renewals, and access granted the moment payment clears rather than the next morning.
Insurance
Quote-and-buy flows where the price depends on answers rather than a price list. Versioned products, wording that has to match what was sold, and mid-term changes that move the premium.
Media and Digital Goods
Digital goods and subscriptions: entitlements, licence windows, regional availability, gifting, and refunds on things that have already been consumed.
Travel
Dated, perishable inventory, prices that move between search and payment, extras attached to a booking, and amendments and cancellations far more common than in retail.
Enterprise B2B
Company accounts and buyer roles, contract pricing and customer-specific price lists, quotes and approval chains, requisition lists, purchase orders and payment on account rather than by card.
Frequently Asked Questions
Selling online:
the common questions
The questions that come up before a build, and before a replatform. Have another? Ask us directly.
We already trade. How do you move the store without losing orders or search rankings?
The migration is planned before anything gets built. We map the old data model onto the new one — products, variants, customers, addresses, order history, discount codes — and run it as a dry import first, so mismatches surface on a copy rather than on launch night. Every old URL gets a destination in a redirect map, category and filter pages included, and those redirects are tested before cutover. The existing store keeps taking orders until the new one has been through a full order cycle end to end, and the rollback plan is written down before the day itself. Payment migration is planned separately: stored card tokens usually cannot move between gateways, and subscriptions often need re-authorising.How do you keep stock accurate across the website, POS and marketplaces?
One system holds the authoritative figure — usually your ERP or WMS, sometimes the platform itself — and every channel reads from it and writes back to it. Updates travel by webhook or a short polling interval rather than a nightly file, the cart holds a reservation for the length of checkout, and a reconciliation job compares channel counts against source counts and raises the differences. Perfect real-time consistency across independent marketplaces is not achievable, so we set a buffer per channel and make an oversell visible and recoverable rather than pretending it cannot happen.Which payment methods can you support, and what happens when a gateway fails?
Cards, Apple Pay and Google Pay, PayPal, UPI and local bank rails, buy-now-pay-later, and payment on account for B2B. Which are worth adding is a market question — what share of your customers already pay that way. Card details go straight to the gateway through its hosted fields or SDK, so they never touch your servers and PCI scope stays as narrow as it can be. Failure is designed for rather than hoped against: idempotent order creation, retries on transient errors, a clear message when an authorisation is declined, and gateway webhooks reconciled against your own order records so a payment taken but not recorded gets caught.Will the store hold up during a sale or a campaign spike?
That is decided during the build, not tested the week before. Category and product pages are cached and served from a CDN, so most traffic never reaches the application. Order processing runs through a queue, so a slow downstream system delays fulfilment instead of blocking checkout. Search and recommendations can drop to a simpler mode rather than fail outright. Ahead of a known peak we load-test with traffic shaped like your last one — the same mix of browsing and checkout, not a flat number — and agree in advance what gets switched off first if something has to give.Who handles tax, shipping rules and returns?
We build them; you own the policy. Tax is calculated by destination and product class, through the platform's own engine or a tax service when you sell across borders, with registration thresholds and invoice requirements accounted for. Shipping rates come from rules — weight, zone, carrier, dimensional weight, free-delivery thresholds — or from live carrier rates where accuracy matters more than speed. Returns are wired end to end, so an approved return puts stock back in the right location and issues a refund reconciled against the original payment. These rules change more often than anything else after launch, so they are built for your team to edit without calling us.How long does a store take, and what makes it take longer?
A straightforward Shopify or WooCommerce store is a matter of weeks. A Magento build or a custom platform runs to months. The variables are consistent: how many product types and variant rules the catalogue actually has, how many systems need integrating, whether payment and tax cross borders, and whether this is a fresh start or a migration carrying years of order history. After discovery we give a range with its assumptions written beside it, and we revise it in the open when one of those assumptions turns out to be wrong.
Tell us what you're
trying to build
The problem, who it's for, and where you are now. That's enough for us to come back with something useful.
hello@aryavos.com
HQ
Noida, India & New York, USA
What happens after you send it
A developer reads it, not an auto-responder. Expect questions about scope and constraints first, then a suggested way to start.