Top 20 E-Commerce App Development Companies in Seattle

ThirstySprout is an outsourced development company headquartered in Seattle with an additional office in San Franciso. Founded in 2017, they currently have about 18 employees. They provide IT staff augmentation as well as custom software and web development services to primarily midmarket agencies in IT, e-commerce, and business services.

Vinova is an app and game development service based in Singapore. Founded in 2010, the team of 35 employees specializes in mobile app development, web development, and custom software development. They work with small businesses, midmarket businesses, and enterprises, focusing on information technology and gaming.  

Since its founding in 2010, Inventive Mobile has been dedicated to mobile app development. Their small but expert team completed over 30 projects for both Android and iOS with over 10 million downloads.

UPQODE is a website design and development agency based in Nashville, Tennessee. Founded in 2015, the team of 40+ specializes in web development, web design, and e-commerce development. They work with small businesses, focusing on information technology, e-commerce, and business services.

A full-service digital design and development agency, Flower Press Creative Studio takes on mobile app, web, and custom software development projects. Founded in 2001, the small team of 6 is headquartered in Seattle and also has experience in UI/UX design.

AccelOne is a software development company based in Kirkland, Wash. with offices in Buenos Aires, Argentina. Founded in 2013, AccelOne's team of 25 employees provides custom software development, mobile app development, and UX/UI design services.

Slashdev is a small software development company. The Winter Park, Florida-based company was established in 2021. Their services include custom software development, web development, mobile app development, wearable app development, and more.

Founded in 2000, Blink UX has almost 20 years of experience in the IT sector. True to their name, Blink UX specializes in UX/UI design but also offers mobile and web development, research, strategy, and design services.

New Normal, founded in 2012, is a software services agency headquartered in Seattle. Their company consists of a team of 22 people who specialize in web development, mobile app development, and e-commerce development. While they mostly work with mid-market businesses, they also work with enterprise and small businesses. The businesses they work with are mostly in the advertising & marketing, e-commerce, and financial services industries.
 

Founded in 2014, PYCOGroup is a development firm. Their team of around 370 employees is based in Brussels, with an additional office around the globe. They focus on custom software, web, and mobile app development.

Scalex Technology Solutions is a digital agency founded in Bellevue, Wash. in 2015 with fewer than 50 employees. They specialize in cloud consulting, mobile app development, and custom software development for clients in the fields of education, financial, and IT services.

Helpful Human is a development agency based in Seattle. Since 2013, their team of 15 has been specializing in web design and development, mobile app development, and UX/UI design. They work primarily with small businesses in the information services and business services industries.

Launched in 1998, Sandcastle Web Design and Development is a small web design agency based in Seattle, Washington. Their services include web design, custom software development, e-commerce development, and mobile app development.

9series Inc. is a technology solutions firm based in Ahmedabad, India, focusing on US and European clients. They have more than 100 employees and have been offering web development, mobile app development, and custom software development since 2007. They specialize in small and midmarket clients in the business services, IT, and education industries.

Founded in 2017, Valere Labs is a custom software development firm. Located in Shrewsbury, Massachusetts, their small team focuses on custom software development, mobile app development, web development, Artificial Intelligence, and more.

Tech Pathway is a web development firm. Established in 2017, the midsize agency is located in Jaipur, India and Bellevue, Washington. Their team focuses on web development, mobile app development, and e-commerce development.

Carbon Five is a software development firm. Established in 2000, the midsize company is located in San Francisco, California; Santa Monica, California; Chattanooga, Tennessee and New York, New York. Their services include custom software development, mobile app development, web development, web design, and more.

Wunderman Thompson Mobile is a midsize UX design agency. Located in Denver, Colorado; Atlanta, Georgia; Seattle, Washington and New York, New York, the firm was established in 2008. Their services include ux/ui design, mobile app development, application management & support, AR/VR development, and more.

Established in 2016, Qamera Design is an user experience design agency. Based in Seattle, Washington, their small team provides ux/ui design, mobile app development, mobile & app marketing, and web development.

Generalsoft Corporation is a small software development company. Located in Seattle, Washington, the firm was launched in 2011. Their services include custom software development, cloud consulting & SI, IT managed services, IT strategy consulting, and more.

Grinev Software is a development company based in Federal Way, Wash. Their team was founded in 2007 and has around 10 employees. They primarily provide mobile app, web, and e-commerce development. 

Website development company Ravenna was founded in 2007. Their small team is located in Bothell, Washington and focuses on web development, mobile app development, web design, and e-commerce development.

Abasys Technologies Inc is a software development company. The Bellevue, Washington-based firm was established in 1987. The small team focuses on custom software development, blockchain, e-commerce development, mobile app development, and more.