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20+
Years delivering eCommerce
16
Countries served
400+
Engineers and specialists
ISO
27001 & 9001 Certified
What We Deliver
Certified Shopify Development for Wellington Businesses
Sigma builds Shopify stores for Wellington’s government procurement, creative and DTC brands, hospitality, tech, and professional services sectors. Custom Liquid development, Shopify Plus with B2B trade portal configuration, NZ payment integrations, migrations, and post-launch retainer support – one certified team, end to end.
Our global delivery centres give you a structured engineering team rather than a solo developer. Every engagement is scoped, priced in writing, and supported after go-live. Your engineers hold active Shopify certifications – Foundations and Liquid Storefronts.
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Full-stack delivery: store setup, theme, apps, integrations, Plus -
Dedicated teams and retainer support -
Transparent pricing agreed upfront
Our Stack
Shopify Technologies We Build With
Focused on Shopify-native tools. Nothing added for padding.
Shopify
Shopify Plus
Liquid
Storefront API
Admin API
What We Do
Our Shopify Development Services in Wellington
From first builds to enterprise Shopify Plus environments, here is what Sigma delivers for Wellington businesses.
Shopify Store Setup, Theme Development & UI Enhancements
Wellington consumers are discerning, digitally confident, and quick to compare across local and international options. A template-based store with slow load times and an off-brand experience won’t hold their attention. Sigma builds Shopify storefronts in custom Liquid that load fast, reflect your brand precisely, and are structured to convert from the first visit.
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Responsive Liquid themes built from your brand identity—not adapted from a shared template directory -
Custom Shopify store setup for B2B and B2C, including Wellington consumer preferences and New Zealand-native payment methods including Afterpay and Laybuy -
SEO-clean, speed-optimised builds that don’t leave technical debt for your marketing team to resolve later -
Mobile-first storefronts connected to your analytics and marketing tools before the store goes live
Shopify Plus, B2B & Customisation Services
Wellington’s government procurement, professional services, and trade supply sectors run on B2B relationships – approved supplier lists, PO-based purchasing, tiered pricing, and invoice payment terms that standard Shopify simply wasn’t designed to handle. Shopify Plus covers all of this when it’s configured properly. Sigma has the experience to do that.
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B2B trade portals with custom logins, tiered pricing, role-based access, PO support, and catalogue restrictions per buyer tier -
Shopify Plus enterprise configuration for omnichannel operations – online, wholesale, and in-person simultaneously -
Workflow automation and backend integrations built to handle the procurement volumes Wellington’s institutional and government buyers generate -
Checkout.liquid customisation for Plus stores – fewer steps, higher completion rates
Shopify App Development Services
Wellington’s mix of government, tech, and creative businesses often comes with very specific operational requirements that no prepackaged app fits cleanly. Sigma builds custom Shopify apps for the actual business logic your organisation runs on – not the nearest available approximation from the app store.
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Custom apps for B2B and B2C workflows that off-the-shelf solutions don’t address reliably -
Apps built into Shopify Flow, webhooks, and metafields – part of the system, not a workaround bolted on later -
Performance-optimised code that adds no storefront bloat or page latency -
Embedded analytics and reporting so your team has clear visibility inside Shopify admin without needing separate tools
Shopify App Integration Services
Running Shopify in isolation from your ERP, your 3PL, your CRM, or your accounting system creates manual reconciliation work every day. Wellington businesses can’t afford that overhead. Sigma builds integrations that connect Shopify to your entire operation so inventory, orders, and customer data stay accurate automatically.
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ERP, POS, CMS, CRM, and New Zealand-compatible payment gateway integrations including Afterpay, Laybuy, POLi, and major credit card processors -
Real-time order, inventory, and customer data sync – no daily exports, no manual reconciliation -
Automated workflows that maintain data accuracy without constant oversight -
Shopify analytics and conversion tracking configured before go-live so your data is useful from the first day
Shopify Checkout Customisation & Optimisation
Wellington buyers are experienced online shoppers who abandon checkout quickly if the experience doesn’t meet their expectations – missing payment options, too many steps, or a mobile experience that doesn’t behave consistently. Sigma fixes this at the Shopify Plus level where real customisation is possible, not at the theme level where it isn’t.
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Shopify Plus checkout.liquid customisation – Afterpay, Laybuy, POLi, and credit card flows built for how Wellington and New Zealand buyers pay -
Speed optimisation across the full storefront, not isolated to the checkout page -
Infrastructure improvements so high-traffic periods – Boxing Day, Black Friday, and mid-year sale events – don’t create downtime -
Funnel analytics and A/B testing infrastructure so every optimisation decision is backed by real data
Shopify Migration Services
Wellington businesses running on legacy platforms often come to Sigma with the same priority: they’ve built years of organic search performance and they can’t afford to lose it in the platform switch. That concern is exactly right. Sigma has run enough migrations to know every point of failure and how to prevent each one.
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Zero-downtime migrations from Magento, WooCommerce, BigCommerce, or older custom-built platforms -
Full URL redirect mapping so your organic search rankings survive the platform transition intact -
Clean, verified transfer of every product, customer record, and order in the database -
Post-migration QA and monitoring – Sigma stays engaged after go-live until everything is confirmed working
Shopify Support & Maintenance Services
A well-launched store still needs ongoing attention. Platform updates introduce compatibility issues, apps change behaviour, and traffic events can surface performance gaps that weren’t visible at launch volumes. Sigma’s post-launch support addresses all of this before your customers encounter it.
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Proactive monitoring and real-time issue resolution – not a support queue reviewed at the end of the week -
App and platform updates managed before they cause downstream problems -
Regular security audits and performance reviews aligned to your revenue and operational goals -
Ongoing CRO and feature development as your Wellington business grows and your store needs more from the platform
Industries
Shopify Stores for Wellington Businesses
Sigma has commerce delivery experience across the sectors that define Wellington’s market.
Government and Procurement
Compliant trade portals and digital services
Creative and DTC Brands
Fashion, homewares, and design-led retail
Food and Hospitality
Specialty food, restaurant merchandise, and D2C
Technology
Commerce embedded into digital products
Professional Services
B2B trade and service-based commerce
Health and Wellness
Supplements, skincare, and compliant retail
B2B and Wholesale
Trade portals and multi-tier pricing
Education and Publishing
Digital products and subscription models
How We Work
Our Shopify Development Process
No black boxes. No vague delivery windows. Every Sigma Shopify project runs through a six-stage process that keeps Wellington clients informed and on schedule.
01
Discovery & Strategy
We start with your customers, your systems, and your commercial goals—before any code is written. The brief drives every decision.
02
Theme Design & Customization
Custom or enhanced Shopify themes built for speed and conversion on every device. Design is approved before it goes to engineering.
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App Development & Integration
Custom apps, ERP connections, payment integrations—built and tested as a complete working system, not assembled in the last sprint.
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Quality Assurance & Testing
Full performance, security, cross-browser, and cross-device testing before launch. Your customers don’t find the bugs.
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Store Launch & Deployment
Go-live is a planned, monitored event. Sigma handles deployment and stays on top of the first 48 hours.
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Ongoing Maintenance & Optimization
Sigma stays on after launch – monitoring, optimising, and building as your Wellington business grows.
Why Sigma
Why Wellington Businesses Choose Sigma for Shopify
Wellington is a city that makes careful decisions. Here is what Sigma brings that local freelancers and smaller agencies typically don’t.
01
We build for revenue, not just for launch
Going live is the beginning. Sigma designs stores to convert traffic into buyers and keeps improving performance after the store is running.
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A commerce partner, not a code vendor
Sigma aligns Shopify’s capabilities with how your business makes money. Every recommendation has a commercial rationale.
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Fast stores. Fewer abandoned sessions.
Page speed and checkout friction directly affect revenue. Sigma builds stores that load fast and don’t place unnecessary obstacles between a buyer and a completed order.
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Security and compliance that stands up
ISO 27001:2022 certified. Every engagement includes security practices that protect customer data and support compliance with the New Zealand Privacy Act 2020.
Certifications
Certified. Not Just Claiming to Be.
Wellington is a city that values evidence over assertions. These are active certifications held by the engineers on your project.
Shopify Partner
Shopify Certified Foundations
Certified Liquid Storefronts
Trusted by Brands Across 16 Countries
From Wellington businesses to global enterprise retailers, Sigma has delivered commerce outcomes that hold.
In Production
Shopify Work That Shipped
Real projects. Verified outcomes. Full case studies on Sigma’s website.
Australia – Beauty and Retail
Napoleon Perdis Left Behind a Legacy Platform and Moved to Shopify Plus
Napoleon Perdis is a well-known Australian cosmetics brand sold across New Zealand too. Sigma migrated them to Shopify Plus, improving store performance and cutting maintenance overhead.
Improved performance, reduced maintenance cost
USA – B2C / Subscription
Fire Department Coffee Needed Subscriptions, Wholesale, and Accessibility
This US brand had three firm requirements for a single Shopify build: subscriptions, wholesale, and WCAG accessibility. Sigma delivered all three without cutting corners.
Subscriptions, wholesale, and accessibility – one build
Romania – Multi-Store Plus
50+ Shopify Plus Stores, No Real-Time Stock Visibility – Sigma Solved Both
A global beauty brand running 50+ Shopify Plus stores with inventory errors. Sigma unified inventory management and automated workflows across every location.
100% real-time stock accuracy across 50+ locations
Frequently Asked Questions
What does a Shopify development company in Wellington do?
Quite a bit. A Shopify development company builds stores from scratch, customises Liquid themes, develops custom apps for workflows the app store doesn’t address, connects Shopify to ERP and CRM systems, configures Shopify Plus for enterprise and B2B requirements, handles platform migrations, and provides ongoing post-launch support. Sigma delivers all of this from structured delivery centres – not through a freelance arrangement.
What Shopify certifications does Sigma hold?
Sigma is an active Shopify Partner with certifications in Shopify Foundations and Certified Liquid Storefronts for Theme Developers – earned and held by the engineers who do the actual work. Beyond those: Adobe Solution Partner (Bronze), AWS Certified Partner, Microsoft Silver Partner, ISO 27001:2022, and ISO 9001:2015. All actively renewed.
Can Sigma migrate our existing store to Shopify?
Yes – and it’s something Sigma has done many times with a thorough process behind it. We migrate from Magento, WooCommerce, BigCommerce, and older custom-built platforms to Shopify and Shopify Plus. Every URL redirect is mapped to protect your organic rankings. All product data, customer records, and order history come across completely. You don’t discover gaps after go-live.
Can Sigma build Shopify stores for government and public sector organisations?
Yes. Sigma has experience delivering Shopify and Shopify Plus solutions for organisations with procurement compliance requirements, including supplier approval processes, PO-based purchasing flows, access control, invoice payment terms, and audit trail requirements. If your organisation has specific compliance needs, raise them early in the scoping process and Sigma will work through what’s required.
Does Shopify support New Zealand payment methods like Afterpay, Laybuy, and POLi?
Yes, with proper configuration. Shopify supports Afterpay, Laybuy, POLi, and major credit cards used by New Zealand shoppers. GST display and invoicing can also be set up correctly for New Zealand requirements. Sigma configures all of this before launch so your store is payment-ready and tax-compliant on day one.
Can Sigma build a headless Shopify store?
Yes. Sigma builds headless storefronts on React and Next.js using the Shopify Storefront API – suited to Wellington tech companies embedding commerce into a product, or businesses that need full front-end control. Being clear about it: headless adds real architectural complexity and ongoing maintenance overhead. Sigma will assess whether it genuinely fits your situation before recommending it.
Why choose Sigma over a Wellington-based Shopify developer?
Wellington has capable local developers – that’s well known. What most freelancers and smaller local agencies can’t provide is ISO 27001:2022 certified security practices, dedicated QA, a structured six-stage delivery process, and sustained post-launch support. Sigma is a certified Shopify Partner with 20+ years of commerce delivery and 400+ specialists. You get a team that’s accountable after handover, not just during the build.
Ready to Start?
Let’s Build a Shopify Store That Sells
Talk to a Sigma Shopify specialist. No pitch decks, no obligation – just a direct conversation about what your Wellington business needs.