+94 Satisfied clients

Custom Software Development Services

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

Talk to founders

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.
Model in green bikini top and jeans holding bag above head.
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.
Model posing with raised arms wearing strapless top and wide-leg pants.
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

4.9Based 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.

Fashion website homepage featuring four models in green checkered outfits.
design
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
development
ecommerce
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
Hands holding probiotic supplements amidst flowers and botanical elements.
ecommerce
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
ecommerce
development

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.

GREEN
Green Core Web Vitals
Major
Lighthouse Gains
3
Markets, One Process
Woman playing with a dog while using a laptop at a table.
development
ecommerce
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
1 min
0 Data Loss
$
Custom Subscriptions
magento
shopify
ecommerce

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.

4.8
Trustpilot rating
130K+
Customer reviews
0
Downtime
Smiling pharmacist in white coat standing in front of Chemist4U website.
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

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
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

By submitting this form, you agree to our Privacy Policy and Terms Conditions.

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.

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.

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.

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

002.

How long does tailored software solution creation take?

003.

What does the cost of tailored software development depend on?

004.

Can you modernize legacy systems with minimal operational impact?

005.

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

006.

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

007.

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

008.

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

009.

Do you provide support and product delivery after launch?

010.

Our Other Services