Ecommerce Software Development Services
Ecommerce software that
Ecommerce software that
compounds revenue
year over year.
Headless storefronts. ERP integrations. Conversion-optimized checkout. Built on Shopify, BigCommerce, or custom architecture. The platforms we've delivered have scaled from $1M to $90M in annual revenue.
$14M
→
0M
Parsons Kellogg
Headless + ERP
$0
→
0M
Half Price Drapes
Shopify + BI
$1M
→
$0M
Off Grid Knives
BigCommerce
Why ecommerce teams come to Redefine
The platform worked at $1M.
The platform worked at $1M.
It breaks at $10M.
What breaks at $10M+
Inventory goes out of sync across channels
Manual SKU updates between Shopify, ERP, and Amazon. Oversells happen. Customer service handles the fallout.
Page speed collapses under catalog growth
A theme that loaded in 2s with 200 SKUs takes 8s with 20,000. Search and filtering become unusable.
Checkout is a conversion graveyard
No A/B testing on the checkout flow. No dynamic upsells. Abandoned carts have no recovery sequence. 3% conversion rate when 5% is available.
Data lives in five systems nobody can join
Shopify has orders. Klaviyo has email. ERP has cost. Nobody has one dashboard showing real margin and lifetime value.
Mobile experience is a shrunken desktop
66% of traffic is mobile. The theme was designed for desktop. The "responsive" version is just squished.
After a Redefine rebuild
Real-time inventory synced across every channel
API-first ERP integration with webhook-driven updates. Shopify, Amazon, and wholesale all read from one source of truth.
Sub-2s load times at 200K SKUs
Headless frontend with incremental static regeneration caching. Faceted search via Elasticsearch. Speed is architecture, not optimization.
Checkout engineered for conversion
Custom checkout flows with post-purchase upsells, saved payment, and Klaviyo abandonment sequences firing within 15 minutes.
One revenue dashboard across all systems
Power BI pulling from Shopify, Klaviyo, ERP, and fulfillment. Real margin, lifetime value, and customer acquisition cost visible in a single view.
Mobile-first from the first wireframe
Designs and development start on mobile viewport. Desktop is the extension. Not the other way around.
"Our inventory was right. Our Shopify was not. We found out when customers started emailing."
Composite from Redefine onboarding calls
The complete ecommerce stack
Click any part of your commerce architecture to see what we build there.
Redefine engineers every layer, from the storefront your customers see to the analytics your team makes decisions with. Click any node to explore.
Storefront
Catalog & PIM
Cart & Checkout
Payment
Fulfillment
Analytics & BI
Growth & CRM
Storefronts built for conversion and speed
Headless (Next.js + Shopify / BigCommerce API) or platform-native. Designed mobile-first. Performance budgets agreed before design begins. Core Web Vitals targets in the architecture brief.
Shopify ThemesHeadless Next.jsBigCommerceCustom PWA
Web application development for ecommerceSTORE HEADER · Nav · Search · Cart (3)
Product A
$89.00
Product B
$124.00
Product C
$67.00
Mobile: 94/100·CLS: 0.02·FID: 8ms
Catalog architecture for 200K or more SKUs
Product information management, faceted search with Elasticsearch or Algolia, and variant logic for complex configurable products. Catalog sync from your ERP or supplier feeds via automated pipelines.
ElasticsearchAlgoliaERP SyncPIM Architecture
Data engineering for ecommerceCatalog Overview248,421 SKUs
99.7%
Sync accuracy
12ms
Search speed
Live
ERP sync
Last sync: 2 minutes ago · 0 errors
Checkout flows engineered for conversion
Custom checkout extensions on Shopify or headless checkout builds. Post-purchase upsell sequences, dynamic discounting, cart abandonment triggers to Klaviyo. B2B checkout with approval workflows and net terms.
Shopify Checkout ExtensionsPost-purchase upsellB2B approval flows
Order Summary
Subtotal (2 items)$318.00
SAVE15 applied-$47.70
Total$270.30
Pay Now · Apple Pay
Abandonment sequence fires in 15 min if checkout exits
Payment infrastructure for retail and B2B
Stripe, Braintree, and Adyen integrations. Subscription billing with proration and dunning. Buy Now Pay Later (Klarna, Afterpay). B2B net terms and invoicing. Multi-currency settlement for international markets.
StripeBraintreeBuy Now Pay LaterSubscriptionsMulti-currency
SaaS product development for ecommerce
99.4%
Auth rate
$24K
Today vol.
0.03%
Fraud
ORD-48201$1,240authorized
ORD-48200$88processing
Fulfillment and warehouse integration
3PL API integrations (ShipBob, ShipStation, custom warehouse systems). Real-time tracking updates pushed to Shopify and Klaviyo. Return management workflows. Multi-warehouse routing rules for split shipments.
ShipBob APIShipStationCustom WMSReturns
142
Shipped
28
Packing
7
Hold
2
Return
Warehouse routing
88% orders to optimal warehouse · SLA: 24h
Revenue analytics across every system
Power BI dashboards pulling from Shopify, Klaviyo, Google Analytics, and ERP. Real margin (not just revenue). Lifetime value cohorts. Channel attribution with first and last touch. Inventory demand forecasting.
Power BIGA4Lifetime Value ModelingAttribution
Data engineering for ecommerce
MRR
$724K
+18% MoM
Avg Lifetime Value
$847
+$120 QoQ
Monthly revenue, last 6 months
Growth engineering with Klaviyo and customer relationship management
Headless Klaviyo server-side event tracking, lifecycle flows (welcome, abandonment, winback, VIP), SMS sequences, and custom segmentation by purchase behavior, lifetime value tier, and product affinity.
KlaviyoServer-side EventsSMS FlowsLifetime Value Segments
AI development for ecommerce
Lifecycle Performance
Welcome Series42.1% open8.4% conversion rate
Cart Abandon38.7% open12.1% conversion rate
VIP Winback29.3% open6.8% conversion rate
Email drives 28.3% of total revenue contribution
Revenue proof: real client results
Four brands. Four transformations.
Four brands. Four transformations.
All numbers from verified
client records.
Headless + ERP
Parsons Kellogg
Promotional apparel · 30 stores · 1M+ SKUs
Started at
$14M
→
Annual revenue
0M
Headless Commerce ArchitecturePower BIDynamics 365 ERPAPI Integration
Shopify + BI
Half Price Drapes
Home decor ecommerce · Multi-channel retail
Scaled to
0M+
Shopify DevelopmentPower BIDynamics ERPKlaviyo
BigCommerce
Peekawhoo
Baby and toddler retail · Fast-growing direct-to-consumer brand
Scaled to
~$0M
BigCommerce DevelopmentUser Experience DesignSearch Engine OptimizationPerformance
3.8x Growth
Off Grid Knives
Specialty retail with advertising restrictions
From $1M
$0M
in 3 years
BigCommerceKlaviyoSearch Engine OptimizationDigital Commerce
More work available on request. Tell us your sector and we will share relevant examples.
Submit Your BriefHow we buildArchitecture first.
Architecture first.
Revenue proof second.
Handoff with documentation.
Capability 01
Headless commerce built on Next.js and Shopify API
Decoupled frontend from the commerce engine. Page loads that don't degrade as catalog grows. A/B testing without theme limitations. The same Shopify admin your team already knows, with a frontend that outperforms every theme on the market.
Next.js 14Shopify Storefront APIIncremental Static Regeneration cachingVercel Edge
Integration Health
Shopify Orders → Dynamics 365Live
ERP Inventory → Shopify QtyLive
Klaviyo → Customer SegmentsLive
Last sync: 94 seconds ago · 0 errors · 12,847 events today
Capability 02
ERP integration with real-time bidirectional sync
Shopify, BigCommerce, and custom storefronts connected to Dynamics 365, NetSuite, or custom ERP systems. Orders flow down, inventory flows back up. No manual export. No oversell. No morning reconciliation ritual.
Dynamics 365NetSuiteWebhook pipelinesConflict resolution
Enterprise ecommerce software development
Capability 03
Conversion engineering from product page to post-purchase
Product page user experience, checkout optimization, post-purchase upsells, and Klaviyo abandonment sequences. Every change tracked with A/B testing before full rollout. Average conversion rate lift of 1 to 2 percentage points on checkout.
A/B TestingConversion Rate Optimization AuditCheckout OptimizationKlaviyo Flows
AI development for ecommerce
The headline result
From $14M to $90M in annual revenue.
From $14M to $90M in annual revenue.
Same brand. New
platform.
Verified client result
Annual revenue
$0M
from $14M
Parsons Kellogg scaled from under $14M to over $90M in annual revenue through headless commerce architecture, Dynamics 365 ERP integration, Power BI analytics, and automated warehouse workflows. The platform supports 30 stores and over one million inventory items.
- 30 stores unified
- 1M+ SKUs managed
- Real-time analytics
- Warehouse automation
Deliverables
Headless Commerce Architecture
API-first platform supporting 30 concurrent stores
Power BI Executive Dashboards
Real-time visibility across all stores and ERP
Dynamics 365 + API Integration
Automated order flow, inventory sync, warehouse operations
Why Redefine
What typical ecommerce agencies ship. What Redefine ships.
Typical agency
Redefine
Theme-limited storefront (Shopify XML)
Headless Next.js with full A/B test capability
Inventory managed manually
Real-time ERP sync with conflict resolution
No ERP integration in scope
Dynamics 365, NetSuite, custom ERP, all scoped in Sprint 1
Basic Klaviyo email setup
Server-side event tracking, lifetime value segments, 28%+
revenue contribution
Launch and move on
Architecture docs, handoff guide, and post-launch support
included
Your team locked into their platform
100% code ownership, no agency dependency after handoff
Architecture sprint before any design
Sprint 1 is always architecture: data model, integration map, performance budget, deployment strategy. You see the full blueprint before a design file opens.
Revenue attribution, not just delivery
Every project is scoped with a revenue or efficiency outcome attached. You track progress against a number, not a feature list.
Full-stack ecommerce in one team
Frontend, backend, ERP integration, analytics, and email marketing, all in scope. You don't coordinate between three separate agencies.
Documentation your team can actually use
Architecture decisions documented. Integration maps delivered. Deployment runbooks included. Your next developer onboards in 2 days, not 2 months.
Questions
What ecommerce brands ask before committing.
Platform choice, migration risk, ERP complexity, and timeline are the real blockers. These are the real answers.
Pricing
Scoped before work starts. Line-by-line. No commitment to receive a proposal.
An ecommerce discovery sprint delivers full architecture and integration map. You see every line item before signing.
Shopify native when: you have under 50K SKUs, need fast time-to-market, and your checkout is standard. Shopify headless when: you need A/B testing on checkout, complex catalog logic, or a custom frontend that outperforms themes. BigCommerce when: you sell B2B with complex pricing rules, need native multi-storefront, or are migrating from Magento. We recommend in writing based on your catalog size, transaction volume, and integration requirements, before we charge anything.
We run old and new stores in parallel. The new platform is built and tested fully while the current store continues taking orders. URL structure is preserved before any traffic switches over. 301 redirects are mapped in the architecture sprint, not discovered at launch. A/B split of traffic begins when the new store passes all quality assurance checks, starting at 10%. We monitor search engine optimization rank, conversion rate, and page speed for the first 30 days before a full cutover. More on our approach in Legacy application modernization for ecommerce.
Custom ERPs are mapped in the discovery sprint. We document every data flow direction, event type, and field mapping before writing an API wrapper. We have integrated Dynamics 365, NetSuite, SAP Business One, and fully custom PHP and .NET ERP systems. The pattern is the same: write to a standardized intermediate layer, not directly to the ERP, so the ecommerce platform is ERP-agnostic. When you upgrade your ERP in 3 years, you update one connector, not rewrite your entire commerce stack.
Discovery sprint: 2 weeks. Simple catalog (under 5K SKUs, no ERP): 12 to 16 weeks. Mid-complexity (5K to 50K SKUs, one ERP integration, Klaviyo): 16 to 22 weeks. Enterprise (50K+ SKUs, multi-warehouse, complex B2B rules): 22 to 32 weeks. Every project starts with a sprint plan showing week-by-week deliverables. You see what ships in sprint 2 before you sign anything.
Yes, email is always in scope on ecommerce builds because a headless migration can break Klaviyo tracking if done without server-side event integration. We implement Klaviyo server-side tracking, custom event schemas, lifecycle flows (welcome, abandonment, post-purchase, winback), segmentation by product affinity and lifetime value tier, and template design. On platforms we've built, email contributes 25 to 30% of total revenue. That does not happen with a basic embed.
Right match?
Tell us where you are. We tell you what we can build.
Ecommerce projects that fail do so for three reasons: wrong platform choice, underestimated integration complexity, or no architecture sprint. We are direct about all three.
Match score0 of 6 selected
Not sure where you fit? Tell us your current platform and revenue and we will be direct about the right approach for your situation.
Current store is hitting performance limits at scale
Page speed degrading, inventory sync unreliable, or checkout conversion rate below 3%.
Ready to move from Shopify theme to headless architecture
A/B testing checkout, performance, or catalog complexity is the driver.
Need ERP, fulfillment, or multi-channel integration
Dynamics 365, NetSuite, custom warehouse management system, Amazon, or wholesale channel sync.
Revenue between $1M and $100M and want to scale further
The platforms we have built have all grown by 2x to 6x after delivery.
Probably not the right match if:
You need a simple theme install or a Shopify app configured
Shopify Experts and certified app partners handle this faster and cheaper.
Total project budget under $20,000
A full headless build with ERP integration requires real architecture time.
Start here
Tell us your
Tell us your
revenue goal.
We scope the platform to get there.
No commitment. No pitch. A scoped proposal with architecture approach and line-item pricing arrives in 3 business days.
01
Submit your brief
Describe your current platform, monthly revenue, and what is holding you back. 3 minutes.
02
Technical call within 48 hours
With an ecommerce architect. We ask about catalog size, integrations, and conversion goals.
03
Scoped proposal in 3 days
Platform recommendation, architecture approach, integration map, sprint plan, and line-item pricing.
04
Sprint 1 within 1 week of sign-off
Architecture sprint delivers data model and integration map before a single product page is designed.
Technical call: 48 hours
Scoped proposal: 3 days
186+ ecommerce builds
100% code ownership
Form
No commitment. No pitch. · Call within 48 hours · Proposal in 3 days