200+ satisfied clients

Proven Results. Delivered at Scale.

Explore our portfolio. Discover how we help brands scale architecture, automate retail workflows, and improve shopping experiences.

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Top eCommerce Developers Clutch 2023 award badge.
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Three white trucks with green and blue accents parked in a row at Girteka.
Fashion model posing in stylish top and pants, promoting Cultnaked's SS24 collection.
Monitor displaying Chemist4U website with a pharmacist smiling in white coat.

Case studies

Our Successful Projects

Real-world examples of e-commerce platforms and digital tools built to handle high user loads, optimize conversion funnels, and support business operations.

magento
shopify
shopify plus

Migrating Ca'Pietra From Magento to Shopify Plus With Native B2B

How we moved retail and trade to Shopify Plus on native B2B, no custom backend - B2C on schedule, trade portal a month later.

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

Migrating BERING From Shopware to Shopify: ~20% Faster Storefront

How we rebuilt the storefront, split the EU and US into separate stores, and set up Shopify Markets for Europe - without pausing orders.

~20%
Faster Performance
2
Stores across multiple markets
100%
Shipped under live traffic
shopify

Rebuilding Cultnaked's Store on Online Store 2.0: Under 2s Load

How we rebuilt the store on Online Store 2.0, simplified checkout, and automated inventory and marketing with NestJS, Klaviyo and Zapier.

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

Two-Way Shopify-Amazon SP-API Sync Without Page Reloads

How we moved a legacy monolith to async Laravel queues so sellers manage Amazon orders right in Shopify.

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

Building Bioma's Magento Subscription Store Before Peak Season

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.

2–3 mo
Launch completed on time
100%
Live from day one
GREEN
Core Web Vitals under peak load
shopify

Replacing Shopify Apps With Custom Frontend Logic for Hey Holy

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.

14,588
Quiz Engagement
78.23%
Returning Customers
2.5%
Mobile Performance
magento

Chemist4You on Hyvä: Core Web Vitals From Red to Green

How we rebuilt the storefront on Hyvä, upgraded Magento to 2.4.7-p1, and rebuilt the prescription consultation engine - with zero downtime.

4.8
Trustpilot rating
130K+
Customer reviews
0
Downtime
magento

8+ Years Supporting a London Antique Retailer on Magento 2

How we rebuilt search, performance and analytics on a live Magento 2 store, cutting order processing time by 22% and lifting ROAS by 18%.

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

Engineering a Multi-Market Magento 2 Checkout for Ergobaby

How our six-person team builds market-specific checkout logic, maintains REST API integrations, and ships fixes without putting live sales at risk.

2024
Partnership start
6
Team size
2+
Years engaged
magento

Migrating a Magento 2 Bookstore to Hyvä in 3 Months

How a redesign for NLPG's Masterbook store became a full frontend migration - with third-party modules adapted, business logic intact, and launch on the planned date.

3 mo
Audit to launch
15
Team size
0
Features lost

Top Development and Digital Expertise

4.9Based on 50+ verified customer reviews
Top E-Commerce Developers in Europe 2023 award badge from Clutch.

Top-Rated

Europe's top eCommerce developers, 2025.

Hyvä Bronze Partner logo in teal and dark blue colors.

Hyvä Partner

Certified partner for fast Magento frontends

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Amasty Partner

Verified Magento extensions partner

Upwork Top Rated Plus logo with green and pink elements.

Top-Rated

Top Rated Plus - Highest-tier agency on Upwork

Shopify Plus Partner logo featuring shopping bag icon with letter S.

Top-Rated

Top Rated Plus - Highest-tier agency on Upwork

Top e-commerce developers in Europe 2023 by Clutch.

Top-Rated

Top Customer Software Developers, Europe 2025

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ISO Certified

ISO 27001 Certified for data security and protection

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Adobe Partner

Official Adobe Commerce ecosystem partner.

Top E-Commerce Developers in Europe 2023 badge from Clutch.

Top-Rated

Top Shopify Software Developers, Europe 2024

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 three 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.
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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.

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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.

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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 build an eCommerce platform that scales with your business?

Let's discuss your goals, platform requirements, and the fastest path to launch


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Vladimir Gubarev

COO and Co-founder

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Jack Ananchenko

CEO and Co-founder

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