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Top Theme Development Companies in 2026

Compare e-commerce companies offering Theme Development. Review platform expertise, industries served, team size, pricing signals, case studies and approved client feedback before selecting a provider for your project.

86 matching companies Structured company data Approved reviews only How Ecostaff evaluates directory data
No reviews yet

Blayzer is a St. Louis digital and ecommerce agency founded in 1998. The company combines ecommerce engineering with search and performance marketing, giving product businesses one partner for both the commerce foundation and customer acquisition. Its current work spans BigCommerce...

Services
API DevelopmentCustom Ecommerce DevelopmentEcommerce Consulting and StrategyEcommerce Marketing Strategy
Platforms
BigCommerceShopify
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
11-50 employees
Headquarters
St. Louis, Missouri, United States
No reviews yet

33 Bondi is a Sydney ecommerce agency founded in 2017 with a strong BigCommerce focus. The company works with retail, healthcare and consumer brands that need custom storefronts, connected operations and long-term platform support. Its ecommerce work combines design, development,...

Services
API DevelopmentCustom Ecommerce DevelopmentEcommerce Consulting and StrategyEcommerce UX/UI Design
Platforms
BigCommerce
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
11-50 employees
Headquarters
Sydney, New South Wales, Australia
No reviews yet

WPRobo is a London-based WordPress and WooCommerce agency offering custom store development, themes and plugins, API integrations, performance work, maintenance, and ecommerce SEO. Its current Woo Agency Partner profile and provider site were reviewed for this dataset.

Services
API DevelopmentCustom Ecommerce DevelopmentCustom Module and Extension DevelopmentEcommerce SEO
Platforms
WooCommerce
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
LinkedIn company size: 2-10 employees
Headquarters
London, England, United Kingdom
No reviews yet

Kinex Media is a Canadian web design, ecommerce and digital marketing agency operating since 2008, with its head office in Mississauga and additional locations in Toronto, California and New York. Its ecommerce team works across Adobe Commerce, Magento, Shopify, Shopify...

Services
B2B Ecommerce DevelopmentConversion Rate OptimizationCustom Ecommerce DevelopmentEcommerce Marketing Strategy
Platforms
Adobe CommerceMagentoShopify
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
51-200 employees
Headquarters
Mississauga, Ontario, Canada
No reviews yet

HTMLPanda is a web and ecommerce development company founded in 2014 and headquartered in Boston, Massachusetts. It builds and converts ecommerce experiences on Shopify, Magento, WooCommerce and OpenCart, alongside WordPress and custom web work. Services include ecommerce development, responsive UX...

Services
Custom Ecommerce DevelopmentCustom Module and Extension DevelopmentEcommerce UX/UI DesignMaintenance and Support
Platforms
MagentoOpenCartShopify
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
51-200 employees
Headquarters
Boston, Massachusetts, United States
No reviews yet

Transform Agency is an ecommerce development and digital experience agency focused on Magento and Adobe Commerce projects, migrations, integrations, performance and storefront modernization. Its public work includes retail and B2B commerce programs with measurable speed and conversion improvements.

Services
API DevelopmentConversion Rate OptimizationCore Web Vitals OptimizationCustom Ecommerce Development
Platforms
Adobe CommerceMagento
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
LinkedIn company size: 51-200 employees
Headquarters
Warsaw, Masovian, United States
No reviews yet

qoliber is a Magento-focused ecommerce engineering company delivering Magento Open Source, Adobe Commerce and Hyvä storefront work. Its portfolio includes migrations, custom storefront development, integrations, performance work and ongoing support for retail and B2B merchants.

Services
Cloud and DevOpsCode AuditCustom Ecommerce DevelopmentCustom Module and Extension Development
Platforms
Adobe CommerceMagento
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
11-50 employees
Headquarters
Poznan, Greater Poland, Poland
No reviews yet

Staylime is an ecommerce development company focused on Magento and Adobe Commerce design, development, migration, performance and ongoing support. Its work spans custom storefronts, integrations and optimization for retail brands, with a US office in Redwood City, California.

Services
API DevelopmentCustom Ecommerce DevelopmentCustom Module and Extension DevelopmentEcommerce Consulting and Strategy
Platforms
Adobe CommerceMagentoShopify
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
11-50 employees
Headquarters
Redwood City, California, United States
No reviews yet

Craftberry is a Shopify ecommerce agency focused on development, CRO and ongoing growth support. The company works with ecommerce brands that need brands that need conversion-focused Shopify improvements, migration and retained technical support, with official project material showing hands-on delivery...

Services
Analytics and TrackingConversion Rate OptimizationCustom Ecommerce DevelopmentEcommerce Consulting and Strategy
Platforms
ShopifyShopify Plus
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
11-50 employees
Headquarters
Varna, Bulgaria
No reviews yet

Cake Agency is a UK ecommerce agency combining Shopify development, branding, consultancy and performance growth. The company works with ecommerce brands that need consumer brands that need a Shopify build connected to conversion, merchandising and brand strategy, with official project...

Services
Conversion Rate OptimizationCustom Ecommerce DevelopmentEcommerce BrandingEcommerce Consulting and Strategy
Platforms
ShopifyShopify Plus
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
11-50 employees
Headquarters
Birmingham, England, United Kingdom
No reviews yet

G & Co. is a retail and ecommerce consulting agency focused on strategy, customer experience, digital product and design. The firm works with established consumer brands where the ecommerce challenge is often broader than selecting or implementing a platform, encompassing...

Services
Analytics and TrackingAPI DevelopmentConversion Rate OptimizationCustom Ecommerce Development
Platforms
ShopifyShopify Plus
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
LinkedIn company size: 51-200 employees
Headquarters
New York, United States
No reviews yet

wecanfly is a Shopify Plus agency with migration, B2B and custom development expertise for European brands. The company works with ecommerce brands that need complex platform moves, international stores and wholesale functionality on Shopify, with official project material showing hands-on...

Services
Analytics and TrackingAPI DevelopmentB2B Ecommerce DevelopmentConversion Rate Optimization
Platforms
ShopifyShopify Plus
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
51-100 employees
Headquarters
Wroclaw, Lower Silesian, Poland
No reviews yet

Fostr is an ecommerce agency or consultancy based in Newcastle upon Tyne, United Kingdom. It focuses on Shopify Plus strategy, design and technology for luxury, fashion, beauty and wellness brands. Its active public website and service positioning were reviewed for...

Services
Analytics and TrackingConversion Rate OptimizationCustom Ecommerce DevelopmentEcommerce Consulting and Strategy
Platforms
ShopifyShopify Plus
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
11-50 employees
Headquarters
Newcastle upon Tyne, England, United Kingdom
No reviews yet

Unified is a UK ecommerce agency delivering Shopify, Magento and multichannel digital commerce programs. The company works with ecommerce brands that need retailers that need replatforming, B2B workflows and design-led digital transformation, with official project material showing hands-on delivery rather...

Services
Analytics and TrackingAPI DevelopmentB2B Ecommerce DevelopmentConversion Rate Optimization
Platforms
MagentoShopifyShopify Plus
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
51-100 employees
Headquarters
London, England, United Kingdom
No reviews yet

Liquify is a Shopify-focused ecommerce design and development agency with experience across Shopify and Shopify Plus. The agency has worked within the Shopify ecosystem since 2014 and focuses on custom storefront design, theme development, migrations and complex commerce functionality. Its...

Services
Custom Ecommerce DevelopmentEcommerce BrandingEcommerce UX/UI DesignMaintenance and Support
Platforms
ShopifyShopify Plus
Minimum project
Not disclosed
Hourly rate
Not disclosed
Team size
TechBehemoths company profile: team size 2-9
Headquarters
London, England, United Kingdom
Buyer guide

How to choose the right Theme Development company

Start with relevance to your exact project, then compare commercial fit, delivery risk and evidence. A recognizable logo or a polished sales presentation is not enough on its own.

01

Relevant expertise

Check the platforms, services and industry experience that match the work you need.

02

Commercial fit

Compare project minimums, hourly rates, team size, location and delivery model.

03

Evidence and trust

Review relevant case studies, approved reviews and transparent verification signals.