The Shopify Agency That Builds What Others Can't
Custom theme development, B2B portals, app integrations, CRO programmes, and checkout extensibility. All under one roof, all Shopify-native, all built to scale.
Trusted by growing Shopify brands
Six capabilities. One expert agency.
From your first theme to full enterprise B2B, every Shopify capability in one place. No generalists, no outsourcing. Just specialists who live and breathe Shopify.
Theme Development
Pixel-perfect Shopify themes built from the ground up: custom Liquid, performant OS 2.0 foundations, custom section schemas, and mobile-first designs engineered to convert. Every theme we ship scores 95+ on Google PageSpeed.
Platform Migration
Zero-downtime migrations from WooCommerce, Magento, BigCommerce, or any legacy platform. We migrate products, customers, order history, and metafields, with full 301 redirect mapping to protect every ranking signal.
B2B & Wholesale
Enterprise B2B commerce on Shopify Plus: gated catalogs, company-specific price lists, net payment terms, bulk order forms, approval workflows, and real-time ERP sync. B2B as smooth as your D2C experience.
Custom App Development
When the App Store reaches its limits, we build exactly what you need. Private admin apps, public Shopify apps, webhook automation, subscription portals, loyalty dashboards. All Shopify-native, all owned by you.
Store Optimisation & CRO
Data-led conversion rate optimisation: heatmap analysis, Core Web Vitals audits, A/B testing, and checkout flow improvements. We turn existing traffic into measurable revenue lifts. No guesswork, just results.
Checkout Extensibility
Shopify Plus checkout without touching native checkout. Custom UI extensions, post-purchase upsells, trust badges, gift wrapping, loyalty points, and urgency timers. All built within Shopify's approved checkout framework.
Shopify Builds That
Actually Scale
Most agencies build stores that look great at launch and struggle at scale. We build for growth from day one: clean Liquid code, performance-first theme decisions, Shopify-native integrations, and a deployment process that lets your team move fast without breaking things. Our builds hold up through traffic spikes and peak-load periods, without going down.
See how we build →
Our results speak for themselves
Every number reflects a real delivered project. We've been measuring Shopify outcomes for over seven years. These are the averages across all our work, not projections.
We connect Shopify to every tool you already use
Native integrations, custom middleware, and webhook pipelines that connect your Shopify store to the platforms powering your marketing, operations, and CX stack.
One agency for every Shopify challenge you face
Whether you're launching your first store, scaling to enterprise B2B, or solving a specific technical challenge, we have the expertise, the track record, and the Shopify-native approach to get it done right.
- Theme Development & Custom Sections: Pixel-perfect Liquid themes, OS 2.0 builds, and custom section schemas that give your marketing team full editorial control. No code needed after handoff.
- B2B Wholesale Portals: Gated catalogs, company-specific pricing, net-30 payment terms, and approval workflows built for enterprise buyers on Shopify Plus.
- Custom Apps & API Integrations: Private apps, public App Store apps, and custom API middleware that extend Shopify beyond its native capabilities. Owned entirely by you.
- CRO, Speed & Checkout Optimisation: Core Web Vitals improvements, A/B testing programmes, and Shopify Plus Checkout Extensibility that turn your existing traffic into measurable revenue.
Clear process. No surprises.
From first call to go-live, every project follows the same four-stage process. You know exactly what's happening, when, and why — at every step.
Discovery Call
A free 30-minute call to understand your store, your goals, and any current blockers. We'll also run a free 30-point audit of your existing Shopify setup before we meet.
Day 1Scope & Fixed Quote
We turn the audit findings into a detailed scope document with a fixed price and a milestone-based delivery timeline. No hourly guesswork, no scope creep surprises.
Day 2–5Build & Review
Development happens in structured milestones. You review progress at every stage and we iterate together — no waiting until the end to see what you've paid for.
Week 2–8Launch & Support
Staged go-live with full QA on desktop and mobile. Every project ships with 30 days of post-launch bug-fix support and complete documentation for your team.
Week 8+Trusted by growing Shopify brands around the world
"We’ve had a great experience working with this ecommerce agency. The team is professional, responsive, and highly skilled in development. They understood our requirements quickly and delivered high-quality work that improved both the functionality and performance of our store. Highly recommended for anyone looking for a strong ecommerce development team."
"They've helped out with emergency fast fixing and full rebuilds of high-traffic e-commerce brands without ever an issue - they match submitted designs and never deliver with any bugs. They're also incredibly affordable for small, independent businesses. Highly recommend this team and have passed them to work with several colleagues."
Works exactly as per brief and design, always delivers work on time and are Shopify experts. I’ve found that other devs I’ve worked with have had trouble keeping deadlines and weren’t able to make the website look the way that I had specified it in Figma. No such issues with Upsolite. They are extremely reliable. Highlty recommended.
Everything you need to know before working with us
Still have questions? Book a free 30-minute call. No pitch, just honest answers about your Shopify goals and how we can help.
Book a free call →Let's build something worth scaling.
Book a free 30-minute discovery call. We'll review your store, identify the biggest growth opportunities, and share exactly what we'd do. No obligation, no sales script.