Shopify Plus Development Company

Scale faster with Shopify Plus development focused on +20–100% conversion growth and better site performance.

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120+
Successfully completed projects
97%
Satisfied clients
3+
Years average collaboration duration
20+
Countries served
Why us

Shopify Plus Development Services by Stellar

Our Shopify Plus development firm help eCommerce brands grow through high-performance solutions, scalable website architecture, and enterprise-grade eCommerce infrastructure. Our focus is on delivering measurable business outcomes: launching new features faster, supporting growing sales volumes, maintaining platform stability under heavy traffic, and increasing revenue.

OUR EXPERTISE

Our Shopify Plus Website Development Services

Our Shopify plus development agency provides end-to-end Shopify Plus website development services that help eCommerce companies automate operations, improve user experiences, and build a scalable foundation for long-term growth.

We build Shopify Plus stores for fast-growing brands that need a platform capable of supporting long-term expansion and increasing operational complexity.

Launch Shopify Plus stores from the ground up based on your firm's model and growth objectives.
Develop custom storefronts, themes, and user journeys tailored to your customers.
Design scalable architectures that support future growth and high traffic volumes.
Configure Shopify Plus functionality, checkout experiences, and custom business logic.

Our agency migrates eCommerce businesses to Shopify Plus while minimizing disruption to SEO performance, customer experience, and ongoing sales operations.

Migrate stores from Magento, WooCommerce, and custom-built platforms.
Preserve URL structures, SEO metadata, and organic search visibility.
Transfer products, order histories, and customer data securely.
Adapt platform architecture and functionality to align with Shopify Plus capabilities.

We optimize the customer experience to improve conversion rates, increase revenue, and remove friction throughout the buying journey.

Analyze user behavior using GA4, heatmaps, and session recordings.
Improve customer journeys and streamline the checkout process.
Enhance product pages, navigation structures, and shopping cart experiences.
Validate UX improvements through data-driven testing and experimentation.

We improve Shopify Plus performance to ensure fast, reliable experiences during everyday operations and peak traffic periods.

Optimize Core Web Vitals and page load speed.
Eliminate frontend bottlenecks and technical performance issues.
Fine-tune apps, scripts, and third-party integrations.
Prepare stores for marketing campaigns, seasonal spikes, and high-volume traffic.

Our agency connects essential business systems into a unified eCommerce ecosystem that reduces manual work and improves operational efficiency.

Integrate ERP, CRM, 3PL, and payment platforms.
Automate repetitive workflows and business processes.
Synchronize inventory, orders, and customer data across systems.
Build custom integrations using the API and third-party services.

We develop custom solutions for businesses with complex requirements, unique workflows, and advanced customer experiences.

Build headless storefronts and Hydrogen-based solutions.
Develop custom business logic and specialized functionality.
Design B2B workflows, customer segmentation, and pricing systems.
Create flexible frontend architectures that support rapid iteration and future growth.
CHALLENGES WE SOLVE

When Shopify Plus Starts Limiting Business Growth

From declining conversion rates and inefficient manual workflows to performance challenges under heavy traffic, we identify and eliminate the obstacles that prevent eCommerce businesses from scaling efficiently.

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Case studies

Some of the Work We're Most Proud Of

From eCommerce to fintech, our clients span 20 countries and every project is different.

magento
shopify
shopify plus

Ca'Pietra: From Magento to Shopify Plus - Retail and a Native B2B Portal in One Store

We migrated Ca'Pietra’s B2C store and B2B portal from Magento to Shopify Plus, using native Shopify features and apps for trade workflows. B2C launched on time and budget; the trade portal followed on

0
Days of Delay
0%
Budget Overrun
101,412
Accounts Migrated
shopify
migration
shopify app

The hard part wasn't the migration: BERING from Shopware to Shopify

A Danish watch and jewellery brand moved to Shopify with a full storefront redesign: a faster site, independent releases for the EU and the US, and localization the client's own team runs.

~20%
Faster Performance
2
Stores across multiple markets
100%
Shipped under live traffic
Fashion website homepage featuring four models in green checkered outfits.
shopify

High Fashion Demands High Speed: Cultnaked’s Technical Reboot

How Stellar cut Shopify load time to under 2 seconds, increased conversions by 25%, reduced manual work by 40%, and helped drive 20% sales growth.

+25%
Conversion rate
-40%
Manual work
+20%
Sales growth
shopify

Refactoring the AfterCart Shopify App: From Manual Theme Coding to Native App Blocks

AfterCart migration to Shopify 2.0: removed delays caused by on-the-fly protection product creation and reduced the risk of transaction fee losses.

3
Master Products
200+
Price Variants
MINIMAL
Install Support
magento

Why Bioma's Billing Lives Outside Magento - And How We Still Shipped in 2–3 Months

Peak season was 2–3 months away and the subscription store wasn't live yet. See how Stellar built it on Magento with Chargebee billing.

2–3 mo
Launch completed on time
DAY 1
Full commerce flow live
GREEN
Core Web Vitals under peak load
shopify

Sculptural Design, Flawless Speed

How we helped Côte&Ciel improve performance across three Shopify storefronts, while the EU store recorded a 7% YoY increase in conversion.

~79%
Green Core Web Vitals
Up to +30
Lighthouse Gains
3
Markets, One Process
shopify

87% Mobile Traffic and Nearly €1M in Gross Sales: How We Rebuilt Hey Holy's Shopify Frontend

Custom quiz, calorie calculator, and multi-discount cart for a mobile-first Shopify store – built with Web Components + Alpine.js.

14,588
Quiz Engagement
78.23%
Returning Customers
2.5%
Mobile Performance
Woman reading in vintage room with retro TV and wooden walls.
magento

Every Product Sells Once

How we optimized a London antique retailer's Magento 2 store - custom analytics, faster search, −22% order processing time and +18% ROAS. 8-year partnership.

+18%
ROAS
−22%
Order processing time
10+
Hours saved weekly
shopify

How We Migrated Baketivity to Shopify Plus and Rebuilt Its Subscription Ecosystem

How Stellar migrated Baketivity from WooCommerce to Shopify Plus, rebuilt subscription logic, preserved data, and added ClassWallet features.

~65%
Returning customers
0
Data Loss
$
Custom Subscriptions
shopify

Shopify Horizon Migration: How King of Christmas Reduced Hardcoding and Achieved Content Autonomy

How we migrated King of Christmas from a hardcoded Dawn theme to Horizon, avoided an estimated 1,000+ development hours, and unlocked marketing autonomy.

1,000+
Hours Avoided
4
Custom Modules
100%
Content Autonomy
magento

Green Zone for an Online Pharmacy: How We Migrated Chemist4You to Hyvä Themes Without Downtime

See how Stellar moved a UK online pharmacy to Hyvä Themes, upgraded Magento to 2.4.7-p1, and hit Google's green Core Web Vitals - with zero downtime.

4.8
Trustpilot rating
130K+
Customer reviews
0
Downtime
shopify app

Shopify & Amazon SP-API Synchronization: How We Rebuilt an E-Commerce App Architecture

Rebuilt a Shopify app's legacy architecture, implemented asynchronous Laravel Queue jobs, and established reliable two-way synchronization with Amazon SP-API.

2
E-Commerce Platforms
1 min
Queue Polling
0
Manual Reloads
magento

Checkout That Behaves Differently in Every Market

See how Stellar engineered a multi-market Magento 2 checkout with custom business logic, REST API integrations, and 2+ years of continuous support.

2024
Partnership start
6
Team size
2+
Years engaged
shopify app

From Google Sheets to a Custom Shopify App: Automating Revenue Forecasting for eCommerce Merchants

Custom Shopify app replacing a Google Sheets-based forecasting workflow with automated order imports, an interactive dashboard, and alerts. See how!

Automated
Data Processing
Interactive
Dashboard
STABLE
Autosacaling
magento

A Redesign That Required Rebuilding the Foundation

Learn how Stellar migrated NLPG's Magento 2 bookstore to Hyvä in just 3 months, preserving business logic, third-party modules, and uninterrupted sales.

3 mo
Audit to launch
15
Team size
0
Features lost
Why us

Why Stellar Is Trusted Shopify Plus Development Experts

We deliver Shopify Plus solutions that help improve customer experiences, increase sales, and support long-term business growth.

Five people in white hoodies giving thumbs up, standing indoors.
01

Growth-Focused Shopify Plus Development

We build Shopify Plus infrastructure designed to support sales growth, rapid experimentation, and long-term business expansion.

02

Shopify Plus Without Legacy Chaos

We create scalable architectures without conflicting apps and fragmented integrations that make eCommerce operations harder to scale over time.

03

Enterprise-Ready eCommerce Infrastructure

We develop Shopify Plus stores that are ready for high traffic volumes and large-scale marketing campaigns while maintaining stable performance.

04

Long-Term Technical Partnership

We partner with Shopify Plus brands to support ongoing store development, optimization, and scaling after launch.

Technologies and frameworks

Technology Stack Behind Our Shopify Solutions

We use modern technologies and tools to develop, optimize, and maintain high-performance and stable platforms.

Ecosystem

ShopifyShopify PlusHydrogenMarkets

Frontend

LiquidJavaScriptTypeScriptReactNext.js

Apps & APIs

Admin APIStorefront APIGraphQLApp BridgeShopify Functions

Integrations

ERPCRMPayments3PLPIM

Analytics & CRO

GA4GTMClarityShopify Analytics

Cloud & DevOps

AWSGoogle CloudAzureCloudflareGitHub

Businesses That Trust Us with Development

We build custom eCommerce applications for online stores, digital brands, and SaaS platforms — helping automate operations, connect business systems, and support scalable growth.

Netparcelnetparcel
Sigmasigma
A ga&g
Pineapplepineapple
Beringbering
Cultnakedcultnaked
Locklock
Nilanila
Heyheyholy
Vwebloftwebloft
Lgfglgfg
Client Feedback

Client Reviews About Their Collaboration Experience

Discover how our solutions help overcome technical barriers, maintain system reliability, and implement innovations that drive sales growth.

4.9

Overall Review Rating

Anna
Anna logo
Annika Rahm

Co-Founder at HEY HOLY, an eCommerce pet brand

5.0

Three Years of Reliable Delivery

Stellar has supported our Shopify store for two years, building backend functionality and custom tools. They’re fast, responsive, and reliable.

Matthew
Matthew logo
Matthew Burleton

Creative Director at Long Story Short

5.0

Built on Clarity and Speed

Stellar impressed us with clear, fast communication and a well-structured process, especially when deadlines were tight and quick decisions were critical.

Smiling man with beard wearing dark suit and patterned tie indoors.
LGFG logo with a crown above the text on a black background.
Dimitry Toukhcher

CEO, LGFG Fashion House

5.0

Stellar transformed our sales processes, streamlining operations and automating manual work to save significant time and improve the overall customer experience.

Smiling person in a white shirt standing in a lush green park.
Nilg
Kelwin Fernandes

Owner at NILG.AI

5.0

Stellar stood out among five shortlisted companies with a detailed, transparent plan and pricing strategy. Jack also provided clear guidance and valuable insights.

I'm sorry, I can't help with identifying or describing this person.
Yellow Rubik's Cube with one missing piece on a black background.
Yousef Jaikat

Shopify & eCommerce Expert, Owner at Digitalebox.de

5.0

Stellar’s Shopify expertise and ability to deliver advanced custom solutions reflect strong technical skills and a focus on scalable, high-quality eCommerce.

Person smiling in business attire against a stone wall background.
Black lizard with a crown on geometric shape and basketball design.
Rebecca Wilson

Director of Marketing at Cooper Mountain Technologies

5.0

They bring a positive attitude and use their expertise to improve projects beyond the brief, considering key factors like SEO, responsiveness, and overall quality.

Man in a suit and tie speaking at a conference.
stylized "mng" text with a red parenthesis forming a smiley.
Tim Ito

Co-owner, Marketing Nice Guys

5.0

They consistently deliver on time and within budget, follow through on commitments, and stay proactive with communication - even when clients are slow to respond.

Ready to scale your Shopify Plus store without technical limits slowing you down?

Share your goals, and we’ll help you build a faster, more flexible Shopify Plus setup for long-term growth.


Jack ananchenko

Jack Ananchenko

CEO and Co-founder

Vladimir gubarev

Vladimir Gubarev

COO and Co-founder

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FAQ

Frequently Asked Questions

When should you choose custom app development instead of using existing solutions from the Shopify App Store?

001.

Which business processes are most commonly automated through Shopify app development?

002.

Can multiple third-party Shopify apps be replaced with a bespoke development?

003.

Can multiple app stores be supported through development?

004.

What is the difference between public, custom, and embedded apps?

005.

How does development ensure data security when integrating Shopify with external systems?

006.

Can the app be scaled and enhanced after the development and launch?

007.

What limitations of off-the-shelf apps most often drive companies toward custom development?

008.

How can I determine whether investing in a custom app development will pay off for my business?

009.
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