200+ satisfied clients
We optimize your Shopify store for speed and performance, backed by a 2-month warranty covering bug fixes and comprehensive post-launch support.
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120+
successfully completed projects
95%
satisfied clients
3+
Years average collaboration duration
20+
countries served
Our Shopify solutions are made to satisfy the unique requirements and business challenges of every sector, allowing companies to function more effectively and retain their competitiveness.
Our tailored approach ensures a fast, secure Shopify store and a seamless, efficient migration that supports optimal performance.
Under-two-second load times reduce drop-offs and can increase conversions by up to 15%.
Google confirms load speed affects desktop and mobile rankings, while slow sites may rank lower.
Fast eCommerce sites retain customers; slow performance drives shoppers to competitors.
Mobile shoppers expect pages within 3 seconds; faster stores reduce bounces and support on-the-go purchases.
Fast-loading stores reduce early exits, keeping visitors engaged instead of leaving within seconds.
We build custom eCommerce applications that remove operational bottlenecks, connect fragmented systems, and support complex business processes at scale.
Challenge
Risk
Solution
Standard eCommerce platforms can’t support complex business logic
Teams rely on workarounds, manual operations, or restrictive platform limitations.
We build custom eCommerce apps around your actual workflows, rules, and growth requirements.
Critical processes are still handled manually
Higher operational costs, slower execution, and increased risk of human error.
We automate repetitive workflows, data processing, order handling, and other high-impact operations.
Business systems operate in isolation
Inconsistent inventory, customer, order, and product data across platforms.
We connect eCommerce platforms with ERP, CRM, PIM, WMS, 3PL, payment, and other systems through reliable integrations.
Existing apps struggle as traffic and operations grow
Performance issues, downtime, and technical limitations begin to affect revenue.
We optimize architecture, backend services, APIs, and infrastructure to keep applications fast and stable under growing load.
From eCommerce to fintech, our clients span 20 countries and every project is different.
How we moved retail and trade to Shopify Plus on native B2B, no custom backend - B2C on schedule, trade portal a month later.
How we rebuilt the storefront, split the EU and US into separate stores, and set up Shopify Markets for Europe - without pausing orders.
How we rebuilt the store on Online Store 2.0, simplified checkout, and automated inventory and marketing with NestJS, Klaviyo and Zapier.
How we moved the widget to App Blocks and pre-built insurance variants - so merchants self-install and protection reaches the cart instantly.
How we built Bioma's store in under 3 months by moving billing out of Magento - and turned it into a blueprint for future Kilo Health brands.
How we moved Côte&Ciel's three Shopify storefronts out of the PageSpeed red zone without pausing sales.
How we built a breed-based quiz, calorie calculator and multi-discount cart on Web Components and Alpine.js - for a store where 87% of traffic is mobile.
How we rebuilt search, performance and analytics on a live Magento 2 store, cutting order processing time by 22% and lifting ROAS by 18%.
A new theme, rebuilt subscriptions and ClassWallet payments - with every customer, order and subscription carried over.
How we moved a hardcoded Dawn theme to Horizon and metaobjects - so the marketing team updates menus, banners and promotions on its own.
How we rebuilt the storefront on Hyvä, upgraded Magento to 2.4.7-p1, and rebuilt the prescription consultation engine - with zero downtime.
How we moved a legacy monolith to async Laravel queues so sellers manage Amazon orders right in Shopify.
How our six-person team builds market-specific checkout logic, maintains REST API integrations, and ships fixes without putting live sales at risk.
We built a free Shopify app that checks storefront pages, scores their SEO health, and turns findings into practical next steps.
Stellar delivers reliable, high-quality, goal-driven Shopify speed optimization focused on real business needs. Here’s why customers choose us:
Stellar delivers reliable, high-quality, goal-driven Shopify speed optimization focused on real business needs. Here’s why customers choose us:
Tailored Solutions
We tailor strategies to your store’s structure, audience, and growth goals, boosting user engagement by 30%.
Faster Load Times
Leaner code and optimized assets reduce load times, averaging 25% more conversions and smoother shopping.
Mobile Optimization
We optimize your store for fast, intuitive mobile performance, increasing mobile conversions by 15%.
Comprehensive Approach
We optimize images, scripts, server speed, and app usage, achieving up to 60% faster sites.
Our structured process ensures a smooth Shopify speed optimization experience from start to finish. Here’s how we move your store without disruption and set you up for growth:
We assess page speed, load times, and user interactions to identify bottlenecks and prioritize improvements - 53% of mobile users leave sites that load in over 3 seconds.
We review your backend, images, apps, code, and server performance to uncover bottlenecks, unused resources, and optimization opportunities that can improve speed by 35–50%.
We create a tailored optimization roadmap with clear priorities, timelines, and expected outcomes, helping businesses achieve sustainable growth 2.5× more often.
We compress images, clean code, remove unnecessary apps, and fine-tune settings to improve speed and UX, cutting bounce rates by up to 40% while preserving functionality and SEO.
We optimize images, code, apps, and store settings to improve speed and user experience, reducing bounce rates by up to 40% without affecting SEO or functionality.
We test performance across devices and monitor speed, engagement, and bounce rates to prevent issues and achieve up to 50% more consistent conversion rates.
We use modern technologies and tools to develop, optimize, and maintain high-performance and stable platforms.
ShopifyShopify Plus
HydrogenMarkets
Liquid
JavaScript
TypeScript
React
Next.js
AWS
Google Cloud
Azure
Cloudflare
GitHubWe build custom eCommerce applications for online stores, digital brands, and SaaS platforms — helping automate operations, connect business systems, and support scalable growth.
netparcel
sigma
a&g
pineapple
bering
cultnaked
lock
nila
heyholy
webloft
lgfgDiscover how our solutions help overcome technical barriers, maintain system reliability, and implement innovations that drive sales growth.
4.9
Overall Review Rating
Co-Founder at HEY HOLY, an eCommerce pet brand
Three Years of Reliable Delivery
Stellar has supported our Shopify store for three years, building backend functionality and custom tools. They’re fast, responsive, and reliable.
Creative Director at Long Story Short
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.
CEO, LGFG Fashion House
Stellar transformed our sales processes, streamlining operations and automating manual work to save significant time and improve the overall customer experience.
Owner at NILG.AI
Stellar stood out among five shortlisted companies with a detailed, transparent plan and pricing strategy. Jack also provided clear guidance and valuable insights.
Shopify & eCommerce Expert, Owner at Digitalebox.de
Stellar’s Shopify expertise and ability to deliver advanced custom solutions reflect strong technical skills and a focus on scalable, high-quality eCommerce.
Director of Marketing at Cooper Mountain Technologies
They bring a positive attitude and use their expertise to improve projects beyond the brief, considering key factors like SEO, responsiveness, and overall quality.
Co-owner, Marketing Nice Guys
They consistently deliver on time and within budget, follow through on commitments, and stay proactive with communication - even when clients are slow to respond.
What`s next?
Get a free tailored Estimate and Growth Plan - contact us today and receive a customized plan for your business, with a demo available to preview.
Jack Ananchenko
CEO and Co-founder
Vladimir Gubarev
COO and Co-founder
From eCommerce to fintech, our clients span 20 countries and every project is different.
How we moved retail and trade to Shopify Plus on native B2B, no custom backend - B2C on schedule, trade portal a month later.
How we rebuilt the storefront, split the EU and US into separate stores, and set up Shopify Markets for Europe - without pausing orders.
How we rebuilt the store on Online Store 2.0, simplified checkout, and automated inventory and marketing with NestJS, Klaviyo and Zapier.
How we moved the widget to App Blocks and pre-built insurance variants - so merchants self-install and protection reaches the cart instantly.
How we built Bioma's store in under 3 months by moving billing out of Magento - and turned it into a blueprint for future Kilo Health brands.
How we moved Côte&Ciel's three Shopify storefronts out of the PageSpeed red zone without pausing sales.
How we built a breed-based quiz, calorie calculator and multi-discount cart on Web Components and Alpine.js - for a store where 87% of traffic is mobile.
How we rebuilt search, performance and analytics on a live Magento 2 store, cutting order processing time by 22% and lifting ROAS by 18%.
A new theme, rebuilt subscriptions and ClassWallet payments - with every customer, order and subscription carried over.
How we moved a hardcoded Dawn theme to Horizon and metaobjects - so the marketing team updates menus, banners and promotions on its own.
How we rebuilt the storefront on Hyvä, upgraded Magento to 2.4.7-p1, and rebuilt the prescription consultation engine - with zero downtime.
How we moved a legacy monolith to async Laravel queues so sellers manage Amazon orders right in Shopify.
How our six-person team builds market-specific checkout logic, maintains REST API integrations, and ships fixes without putting live sales at risk.
We built a free Shopify app that checks storefront pages, scores their SEO health, and turns findings into practical next steps.
