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Top Magento Development Companies in Seattle, WA

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Looking for the best Magento development company in Seattle? UpCity compiles authentic reviews, company descriptions, project examples, and more into a list for you to review. Feel confident you're finding the top provider for your business.

UpCity offers objective, independent research and verified user reviews. We earn compensation from some providers who sign up for sponsored profiles. Learn more about our trusted providers.

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Provider's minimum per-project cost
Provider's minimum retainer cost
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Businesses provider works with
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10 Provider(s)Last Updated: July 13, 2025
UpCity Silver Sponsor
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Montana Banana designs and develops Internet strategies for corporate, e-commerce and entertainment based clients. We have offices in Seattle, WA and Los Angeles, CA but design products for clients around the world.
Businesses provider works with
Works with
Small, Medium
Provider's minimum per-project cost
Per-project minimum
$5,000 or more
Provider's minimum retainer cost
Retainer minimum
Less than $500, monthly
Provider updated information on 7/17/2024
Services Offered
WooCommerce DevelopmentAndroid App DevelopmentiOS App DevelopmentWordPress DevelopmentSoftware DevelopmentView All Services (13)
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Sandcastle Web Design & Development

Seattle, WA, US See Location
5.0 | 2 reviews
Last reviewed on 2/29/2024
Sandcastle Web Design & Development is a full-service web design & development agency with a wealth of technical experience and a personalized approach to each project. We have 2+ decades of experience in web design, e-commerce, custom application development, mobile apps and digital marketing.
Businesses provider works with
Works with
Small, Medium
Provider's minimum per-project cost
Per-project minimum
$5,000 or more
Provider's minimum retainer cost
Retainer minimum
Less than $500, monthly
Provider updated information on 3/5/2024
Services Offered
iOS App DevelopmentAndroid App DevelopmentMagento DevelopmentWebsite DevelopmentMobile App DevelopmentView All Services (7)
UpCity Local Excellence Award Winner - An illustration of a certificate.
Since 2005, Efelle has provided immersive, engaging web design that DRIVES BUSINESS.
Businesses provider works with
Works with
Small, Medium, Enterprise
Provider's minimum retainer cost
Retainer minimum
$1,500 or more, monthly
Provider updated information on 5/31/2018
Services Offered
Magento DevelopmentWebsite DevelopmentPPCCreative AgenciesContent MarketingView All Services (9)

coolblueweb

Seattle, WA, US See Location
coolblueweb was founded in 2009 and works entirely in-house in Seattle. We have extensive experience developing websites, web applications and ecommerce stores, particularly on the Magento & WooCommcerce platforms. Our clients are active members of our team, and are involved in every step of the process! We use an agile development process to keep our projects’ budgets, timelines, and scopes in sync.  By prioritizing a project’s scope, we work to deliver the most important features before focusing on the embellishments.  This pushes projects to finish on-time and on-budget, always. coolblueweb strives to build productive, supportive relationships with our long-term clients, through ongoing technical support and maintenance, as well as making ourselves accessible and available for future development work and consulting. We take pride in being an accessible and expert team. All of our work is completed in Seattle, WA and we’re always available by phone or email if you have any questions.  
Businesses provider works with
Works with
Small, Medium, Enterprise
Services Offered
Magento DevelopmentWeb Design
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L4 Digital, a Globant company, is a leading digital product agency that creates innovative and meaningful experiences to engage people across every screen. The company offers the digital product consulting, design, development, and quality assurance se...
Services Offered
Software DevelopmentAndroid App DevelopmentMagento DevelopmentCloud ConsultingDigital Marketing
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Helios Solutions is a global technology company that provides end-to-end software development services to help businesses transform for the digital era.
Services Offered
Software DevelopmentMagento Development
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Jennergy

Seattle, WA, US See Location
Meet Jennergy, an award-winning creative agency focused close client relationships. We have energy, fresh ideas and efficiency to produce powerful results.
Services Offered
Magento Development
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The description of our homepage.
Services Offered
Magento Development
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New Theory

Seattle, WA, US See Location
New Theory is an award winning, 11-person web design and development company in Seattle, specializing in ecommerce, WordPress, and Magento.
Services Offered
Magento Development
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Find & hire Magento developers for your ecommerce website. ► ► ► With certified Magento developers guiding our team, each website is fully optimized for efficiency and durability.
Services Offered
Magento Development
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