Custom Shopify Development Services
Deliver a flawless shopping experience with Onix’s custom Shopify development services. We help eCommerce brands design, build, and scale stores that convert — from custom themes and integrations to performance optimization and 24/7 maintenance.
Trusted by clients worldwide
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Your store deserves more than a template
When your store crashes on Black Friday or loads too slowly, you lose more than sales — you lose customer trust. That’s why Onix builds custom Shopify solutions designed for performance, scalability, and round-the-clock reliability.
Our team handles everything — from Shopify app customization and checkout optimization to store performance monitoring — ensuring your eCommerce stays fast, stable, and conversion-ready.
Performance optimization & store monitoring
Your store should never sleep. We monitor site performance, fix speed bottlenecks, and ensure your Shopify store handles traffic spikes without breaking.
Custom app development & integration
Your tools, connected. From CRM and ERP to payment systems and third-party logistics — we integrate everything seamlessly into your Shopify ecosystem.
Theme development & UX enhancement
Design that converts. We craft Shopify themes that match your brand, delight users, and boost conversions — built from scratch or improved from your current design.
Shopify plus scaling support
From startup to enterprise. Our developers help you transition to Shopify Plus, implement advanced automations, and scale your infrastructure for global growth.
Ongoing maintenance & insights
Stay ahead, not reactive. We don’t just launch — we maintain. Monthly performance reviews, issue tracking, and optimization plans keep your store always improving.
Shopify AI personalization & smart automation
We integrate AI-driven tools that analyze customer behavior, recommend products, and automate repetitive store management tasks.
Let’s create a Shopify experience that’s fast, secure, and designed to scale with your business.
Always-on, always-ready: custom shopify development for high-performing stores
Your online store never sleeps. Whether it’s a flash sale at midnight, a viral TikTok sending thousands of new shoppers, or a checkout bug threatening your conversion rates, your Shopify store needs to perform flawlessly every second.
At Onix, we build custom Shopify stores that never miss a sale. From performance optimization and app integrations to UI/UX enhancements and backend automation — we don’t just create stores; we craft growth engines that run smoothly 24/7.
Shopify performance optimization
Shopify performance optimizationSpeed is money. We fine-tune every pixel and process to make sure your pages load in under 2 seconds. Faster load times mean happier customers and higher conversions.
Custom app development & API integrations
Custom app development & API integrationsYour business isn’t “one-size-fits-all.” We build custom Shopify apps and connect third-party tools — CRMs, ERPs, or marketing platforms — so your operations run like clockwork and your data flows seamlessly.
Support system & channel integration
Support system & channel integrationWe don’t just design stores; we design experiences. Modern, conversion-driven, and on-brand — your Shopify storefront will not only look great but also guide users naturally toward checkout.
Migration & upgrade services
Migration & upgrade servicesMoving from WooCommerce, Magento, or legacy Shopify themes? We handle secure migration of your products, data, and SEO ranking — with zero downtime and minimal disruption.
Checkout optimization & conversion boost
Checkout optimization & conversion boostTurn browsers into buyers. We identify leaks in your funnel and fix them with UX tweaks, trust signals, and one-click checkout flows that reduce abandonment.
Shopify automation & AI enhancements
Shopify automation & AI enhancementsWe use automation tools and AI-driven personalization to streamline your workflows — from customer segmentation to restock alerts and product recommendations.
Your store deserves to grow — not just exist. Let’s make sure your Shopify platform is built to scale, sell, and stay online no matter the traffic.
From startups to global brands: who relies on our shopify expertise
Our Shopify development services support businesses at every growth stage — from fresh DTC startups to enterprise-level eCommerce giants scaling across markets.
DTC & retail brands
We help consumer brands launch conversion-driven Shopify stores that reflect their identity and grow loyal communities.
Marketplaces & multi-vendor stores
Complex product catalogs, seller dashboards, and payment integrations — all built for stability and scale.
Fashion & beauty
We craft visually stunning stores optimized for mobile, influencer campaigns, and seasonal collections.
Health & wellness brands
Subscriptions, memberships, and secure checkouts — built for trust and compliance.
Food & beverage
Custom subscription flows, delivery tracking, and loyalty features tailored for recurring customers.
Tech & gadgets
Dynamic product showcases, bundle offers, and smart integrations that boost upsells and simplify management.
Your customers expect speed, beauty, and reliability — every time they shop. Let’s build a Shopify store that delivers exactly that.
Choose your cooperation option
We provide Shopify development services in flexible engagement models - from one-time assistance to long-term partnership - so you can choose what fits your business best.
Shopify consulting & strategy
Our experts audit your existing store, identify bottlenecks, and design a roadmap for performance, UX, and conversion improvements.
Dedicated team
Extend your team with certified Shopify developers and designers for long-term projects, ongoing improvements, and rapid feature delivery.
Project maintenance
We handle updates, security patches, speed optimization, and continuous monitoring to ensure your Shopify store is always fast, stable, and conversion-ready.
Custom development engagement
We deliver end-to-end Shopify solutions, including custom apps, integrations, theme development, and performance scaling — fully tailored to your business.
Insights from our experts
Your store, fully optimized & secure
From speed and uptime to integrations and custom apps — we make sure your Shopify store runs flawlessly so you can focus on growing your business.
FAQs
How much does custom Shopify development cost?
The cost of custom Shopify development services depends on your store’s complexity, required integrations, and design requirements. Onix offers tailored solutions to fit startups, scale-ups, and enterprise eCommerce platforms. Typical projects range from basic store setups to fully customized Shopify Plus implementations.
What is the typical timeline for a Shopify store development project?
Timelines vary depending on the project scope. Standard Shopify development services like theme customization or small app integration can take 2–6 weeks, while full-scale custom Shopify development, including advanced apps, integrations, and custom workflows, may take 8–16 weeks or more.
Can you migrate my existing website to Shopify without losing data or SEO rankings?
Yes. Onix specializes in Shopify migration services that preserve all product, customer, and order data while maintaining SEO rankings. Our team ensures smooth migration, minimal downtime, and proper redirects to retain search engine visibility.
Do you provide ongoing maintenance and support after the Shopify store launch?
Absolutely. Our 24/7 Shopify support and custom Shopify development services include post-launch maintenance, performance optimization, monitoring, and updates to keep your store secure, fast, and fully functional.
What makes Onix different from other Shopify development companies?
Onix is a custom Shopify development company trusted worldwide. We combine technical expertise, eCommerce strategy, and a results-driven approach to deliver high-performing, scalable, and conversion-optimized Shopify stores. From custom apps to integrations and 24/7 support, we provide end-to-end solutions tailored to your business.