200+ satisfied clients

Custom Software Development Services

Accelerate high-growth with scalable custom software that automates operations and launches features 2–3x faster.

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Get free estimation in 24h

75%
of clients increase sales
120
successfully delivered projects
3+
average years of collaboration with clients
20
operating in different countries around the world
Three Girteka logistics trucks parked under a blue sky.
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Computer monitor displaying a website for finding treatments with a smiling pharmacist.
Trucks lined up with Girteka branding, under blue sky with company tagline displayed.
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Monitor displaying a chemist website with a smiling pharmacist in the corner.

Why us

Custom Software Development Services by Stellar

We follow a solution-first approach to software engineering, focusing on business goals, process automation, and the long-term growth of companies. We help businesses launch new features faster, optimize operational processes, minimize technical limitations, and build a reliable technological foundation for growth.

TOP development and digital expertise

5.0Based on 50+ verified customer reviews
Clutch

Top-Rated

Europe's top eCommerce developers, 2025.

Hyva

Hyvä Partner

Certified partner for fast Magento frontends

Amasty

Amasty Partner

Verified Magento extensions partner

Upwork

Top-Rated

Top Rated Plus - Highest-tier agency on Upwork

Shopify Plus Partner logo featuring a shopping bag icon.

Top-Rated

Top Rated Plus - Highest-tier agency on Upwork

Clutch

Top-Rated

Top Customer Software Developers, Europe 2025

Iso

ISO Certified

ISO 270001 Certified for data security and protection

Adobe solution

Adobe Partner

Official Adobe Commerce ecosystem partner.

Clutch

Top-Rated

Top Shopify Software Developers, Europe 2024

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.

DenmarkDenmark
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
UKUK
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
UkraineUSAUkraine · USA
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
GermanyGermany
wordpress

Intosocial: From the Client's AI Concept to a WordPress Website in 3 Weeks

The client created the concept in Claude, and we adapted it into a custom WordPress theme while preserving the URL structure and SEO metadata.

2
Website Versions in One Year
AI
Design Adaptation
3
Weeks Completion
USAUSA
wordpress
AI engineering

WordPress AI Assistant for Personalized Travel Itineraries

We integrated an AI assistant into the World Jewish Travel WordPress website that creates personalized travel itineraries and generates AI videos or podcasts for them. We also developed a mobile app and a content generator that follows the brand’s style.

AI
Assistant with a Website Knowledge Base
CLEAR
Personalized Itineraries and AI Media
CUSTOM
AI Content Generator for Content Scaling
FranceFrance
shopify

Speeding Up Côte&Ciel's Shopify Stores: Up to +30 Lighthouse Points

How we moved Côte&Ciel's three Shopify storefronts out of the PageSpeed red zone without pausing sales.

~79%
Green Core Web Vitals
+30
Lighthouse Gains
3
Markets, One Process
LithuaniaLithuania
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
We have solutions

Full-Cycle Software Development Services

We turn concepts into scalable digital products with end-to-end product engineering expertise.

Tech Consulting & Architecture

We design technology architecture and help choose solutions that support product scalability, performance, and stabilit

Product Design & User Experience

We create intuitive interfaces and thoughtful user experiences that improve product interaction and user engagement.

MVP / PoC Development

We develop MVPs and PoCs for rapid idea validation, product-market fit testing, and low-risk product launches.

No matter where you are in your growth journey — the challenges are real, and so are our solutions.

E-commerce Platforms Expertise

Ecommerce Platforms Our Company Works with

Shopify and Shopify Plus

Shopify is a convenient platform for quickly launching an ecommerce store, while Shopify Plus is designed for fast-growing brands that need scalability and enterprise-level features.

Magento (Adobe Commerce)

A powerful platform for large ecommerce projects with complex catalogs, integrations, and a need for deep customization.

WooCommerce

A flexible solution for businesses on WordPress that allows for quick online store launches and scaling through a large ecosystem of plugins.

Salesforce Commerce Cloud

We implement enterprise solutions on Salesforce Commerce Cloud for large brands, providing deep CRM integrations, personalization, and omnichannel sales.

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

Jack Ananchenko

CEO and Co-founder

Vladimir gubarev

Vladimir Gubarev

COO and Co-founder

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Industries

Digital Solutions for Key Industries

We develop custom software for industries where automation, data security, and digital transformation are essential for business efficiency and scalability.

eCommerce

We develop eCommerce platforms and automation systems for online businesses with a focus on growth and improved customer experience.

Healthcare

We create digital solutions for the healthcare industry focused on data management, process automation, and seamless patient interaction.

Fintech

We design high-load financial platforms and payment systems for stable and secure transaction processing.

Logistics

We automate logistics workflows, warehouse operations, and supply chain management through tailored software solutions.

SaaS

We help SaaS companies build scalable products, cloud platforms, and subscription-based services.

Manufacturing

We develop enterprise systems for automating manufacturing processes, operations management, and internal workflows.

Enterprise Solutions

Innovative Solutions for Custom Software Development

We implement technology solutions that help scale operations, automate processes, and accelerate the launch of new business initiatives.

Solutions
Why us

Why Choose Stellar as Your Custom Software Development Vendor

We implement tailored technology solutions that help automate processes, maintain product stability, and support the company’s strategic growth.

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

Software Built Around Business Growth

We develop software solutions tailored to business goals, operational processes, and the company’s long-term growth.

02

Scalable Architecture from Day One

We design architecture ready for high workloads, new integrations, and future product expansion while minimizing the need for costly rework.

03

Complex Integrations Without Operational Disruption

We integrate ERP, CRM, payment systems, and internal systems without downtime or disruption to operational processes.

04

Advanced Security & Compliance

We build digital products with a strong focus on data security, reliable infrastructure, and compliance with modern industry standards.

System Integration

Digital Solutions for Key Industries

We develop custom software for industries where automation, data security, and digital transformation are essential for business efficiency and scalability.

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.

5.0

Overall Review Rating

“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.
Anna
Annika Rahm

Co-Founder at HEY HOLY, an eCommerce pet brand

  • SHOPIFY
  • NODE.JS
  • JAVASCRIPT
  • TYPESCRIPT
  • REACT
  • GRAPHQL

“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.
Matthew
Matthew Burleton

Creative Director at Long Story Short

  • SHOPIFY
  • NODE.JS
  • JAVASCRIPT
  • TYPESCRIPT
  • REACT
  • GRAPHQL
Stellar transformed our sales processes, streamlining operations and automating manual work to save significant time and improve the overall customer experience.
Smiling man with beard wearing dark suit and patterned tie indoors.
Dimitry Toukhcher

CEO, LGFG Fashion House

  • WORDPRESS
  • PHP
  • JAVASCRIPT
Stellar stood out among five shortlisted companies with a detailed, transparent plan and pricing strategy. Jack also provided clear guidance and valuable insights.
Smiling person in a white shirt standing in a lush green park.
Kelwin Fernandes

Owner at NILG.AI

  • WORDPRESS
  • PHP
  • MYSQL
  • JAVASCRIPT
  • WOOCOMMERCE
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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Yousef Jaikat

Shopify & eCommerce Expert, Owner at Digitalebox.de

  • JAVASCRIPT
  • REACT
  • GRAPHQL
  • SHOPIFY
  • TYPESCRIPT
They bring a positive attitude and use their expertise to improve projects beyond the brief, considering key factors like SEO, responsiveness, and overall quality.
Person smiling in business attire against a stone wall background.
Rebecca Wilson

Director of Marketing at Cooper Mountain Technologies

  • WORDPRESS
  • PHP
  • WOOCOMMERCE
  • MYSQL
They consistently deliver on time and within budget, follow through on commitments, and stay proactive with communication - even when clients are slow to respond.
Man in a suit and tie speaking at a conference.
Tim Ito

Co-owner, Marketing Nice Guys

  • PHP
  • WOOCOMMERCE
  • MYSQL
  • LARAVEL
  • JAVASCRIPT
Let’s talk

Need a reliable delivery partner?

Tell us what you are building and we will help you shape the next step.

Process of Custom Software Development

We structure the product delivery process to ensure transparency, quality control, and predictable results at every stage.

  • 01

    Discovery & Planning

    We analyze business needs and requirements and create a roadmap for the future software solution.

  • 02

    Design & Architecture

    We design scalable system architecture, user flows, and the product’s UI/UX concept.

  • 03

    Software Development

    We develop the core functionality, integrations, APIs, and business logic of the product.

  • 04

    Quality Assurance & Testing

    We verify the stability, security, performance, and overall quality across every stage of the product lifecycle.

  • 05

    Deployment & Launch

    We configure infrastructure and deployment processes and launch the product into the production environment.

  • 06

    Support & Continuous Improvement

    We support, optimize, and continuously improve the software after launch.

Our team

A Team that Transforms Ideas Into Business Assets

80+

Specialists

Our specialists combine deep technical expertise with a business-oriented approach to create e-commerce platforms that drive revenue growth.

0 of 0
Technologies and frameworks

Modern Tools for Stable Platforms

We use a tech stack that allows projects to be launched quickly and adapted to the specific needs of a company’s operations.

Digital Design

FigmaAdobe PhotoshopAdobe XD

Back-end

PHPLaravelSymfonyJavaSpringNest.jsExpress.js

Front-end

ReactNext.jsAngularVueNuxt

Headless Commerce

Headless Commerce Architecture

CMS / E-commerce Platforms

Shopify PlusAdobe Commerce (+Cloud)WordPressWooCommerce
FAQ

Frequently Asked Questions

What is data-driven custom software development, and who is it for?

001.

How long does tailored software solution creation take?

003.

Can you modernize legacy systems with minimal operational impact?

005.

Do you build web & mobile apps as part of tailored software services?

007.

Do you build custom eCommerce platforms, SaaS, and enterprise systems?

009.

When does a business need custom dev instead of ready-made solutions?

002.

What does the cost of tailored software development depend on?

004.

How do you ensure system scalability, performance, and optimization?

006.

Do you implement AI, automation, and data-driven systems?

008.

Do you provide support and product delivery after launch?

010.

Our Other Services