Top 40 E-Commerce App Development Companies in Seattle

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Top 40 E-Commerce App Development Companies in Seattle

The Best of February 2025

Looking for a top e-commerce app development company in Seattle?

E-commerce apps allow you to sell products to buyers online through a mobile app. Apps like Wayfair, Amazon, or Glasses by Warby Parker are examples of e-commerce mobile apps with unique features to optimize the buying experience for shoppers. 

List of the Best Seattle E-Commerce Mobile App Developers

  • 1
    (47 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $50,000+
    50 - 249 employees
    Seattle, WA

    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.

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    Clients

    Rover.com

    Industries

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  • 2
    (38 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $25,000+
    50 - 249 employees
    Seattle, WA
    Zazz is an application development firm. The midsize Seattle, Washington-based firm was launched in 2009. Their services include Mobile App Development, UX/UI Design, and Web Development.
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    Clients

    Inclose

    Industries

  • 3
    (83 Reviews) 4.8

    Timeliness

    4.7

    Service Excellence

    4.8

    Value

    4.8

    Would Recommend

    4.9
    $5,000+
    10 - 49 employees
    Seattle, WA
    ChopDawg.com is a small Philadelphia, Pennsylvania-based app development company. They offer Mobile App Development and Web Development and were launched in 2009.
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    Clients

    Alpha Paw Big Brothers Big Sisters Choice Home Warranty City of Peachtree Corners, Georga

    Industries

  • 4
    (84 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.8

    Would Recommend

    4.9
    $5,000+
    50 - 249 employees
    Seattle, WA
    UPQODE is a web design agency based in Nashville, Tennessee; New York, New York; Tampa, Florida and Seattle, Washington. They focus on Web Design, Web Development, UX/UI Design, Custom Software Development, and more and were launched in 2015.
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    Clients

    Think Tank Team - Samsung Research America

    Industries

  • 5
    (26 Reviews) 4.9

    Timeliness

    4.8

    Service Excellence

    4.9

    Value

    4.7

    Would Recommend

    5.0
    $25,000+
    10 - 49 employees
    Medina, WA
    Flower Press Interactive is a Medina, Washington-based user experience design company. The small team focuses on UX/UI Design, Custom Software Development, Artificial Intelligence, Graphic Design, and more. The company was launched in 2001.
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    Clients

    Insurance Lounge

    Industries

  • 6
    (16 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    4.9

    Would Recommend

    5.0
    $5,000+
    10 - 49 employees
    Seattle, WA

    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.

    Read More

    Industries

  • 7
    (12 Reviews) 4.9

    Timeliness

    4.8

    Service Excellence

    4.9

    Value

    4.8

    Would Recommend

    5.0
    $10,000+
    50 - 249 employees
    Kirkland, WA
    AccelOne is an IT strategy consulting company. The midsize Kirkland, Washington-based agency was established in 2013. Their services include IT strategy consulting, IT managed services, Custom Software Development, Web Development, and more.
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    Clients

    Xapo

    Industries

  • 8
    (2 Reviews) 4.8

    Timeliness

    4.8

    Service Excellence

    4.8

    Value

    4.3

    Would Recommend

    5.0
    $100,000+
    250 - 999 employees
    Seattle, WA

    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.

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    Clients

    Microsoft

    Industries

  • 9
    (4 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    4.9

    Value

    5.0

    Would Recommend

    5.0
    $50,000+
    10 - 49 employees
    Seattle, WA

    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.
     

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    Clients

    Amazon

    Industries

  • 10
    (3 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $5,000+
    10 - 49 employees
    Bellevue, WA

    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.

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    Clients

    World Vision

    Industries

  • 11
    (10 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $5,000+
    10 - 49 employees
    Issaquah, WA

    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.

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    Clients

    University of Washington

    Industries

  • 12
    (1 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $25,000+
    2 - 9 employees
    Seattle, WA
    Codble is a Seattle, Washington-based application development firm. Founded in 2020, the small team offers Mobile App Development, Custom Software Development, Web Development, IT strategy consulting, and more.
    Read More
  • 13
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    2 - 9 employees
    Burien, WA
    Sandcastle Web Design and Development is a software development company established in 1998. The team specializes in Custom Software Development and Mobile App Development.
    Read More

    Clients

    Aviation Supplies & Academics Cevala / Brandvia Allegiant Commercial Asset Services Group

    Industries

  • 14
    (1 Reviews) 4.5

    Timeliness

    4.5

    Service Excellence

    4.0

    Value

    4.0

    Would Recommend

    4.0
    $25,000+
    10,000+ employees
    Bellevue, WA

    Persistent Systems is a software development firm based in Pune, India. Founded in 1990, their team of over 12,000 employees provides custom software development, CRM consulting, and IT strategy services.

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    Industries

  • 15
    (6 Reviews) 4.9

    Timeliness

    4.8

    Service Excellence

    5.0

    Value

    4.9

    Would Recommend

    5.0
    $10,000+
    10 - 49 employees
    Seattle, WA

    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.

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    Clients

    Rudy's

    Industries

  • 16
    (36 Reviews) 4.8

    Timeliness

    4.8

    Service Excellence

    4.7

    Value

    4.7

    Would Recommend

    4.9
    $10,000+
    50 - 249 employees
    Bellevue, WA
    9series Inc is a Market Research company founded in 2014. They are based in Bellevue, Washington; Ahmedabad, India and Seattle, Washington and have a midsize team. The agency specializes in Market Research, Mobile App Development, Artificial Intelligence, Web Development, and more.
    Read More

    Industries

  • 17
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    50 - 249 employees
    Bellevue, WA
    Midsize mobile application development firm Tech Pathway, is in Jaipur, India and Bellevue, Washington. Their services include Mobile App Development and Web Development.
    Read More

    Industries

  • 18
    (0 Reviews)

    Not yet reviewed.

    $100,000+
    50 - 249 employees
    Seattle, WA
    Launched in 2000, Carbon Five is a custom software development company. Their team specializes in Custom Software Development and Mobile App Development.
    Read More

    Industries

  • 19
    (0 Reviews)

    Not yet reviewed.

    $50,000+
    50 - 249 employees
    Seattle, WA
    Established in 2008, Wunderman Thompson Mobile is a midsize user experience company. Their team focuses on UX/UI Design and Mobile App Development.
    Read More

    Industries

  • 20
    (1 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    4.5

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    10 - 49 employees
    Seattle, WA
    TekByt LLC is a web design agency established in 2024. They are in Seattle, Washington and have a small team. Their services include Web Design, UX/UI Design, Custom Software Development, Web Development, and more.
    Read More

    Industries

  • 21
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    Bellevue, WA
    IT SOFT, a small software development firm, is based in Bellevue, Washington. The team focuses on Custom Software Development and Web Development.
    Read More
  • 22
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    Seattle, WA
    Qamera Design is an UX design agency founded in 2016. The small team specializes in UX/UI Design and Mobile App Development.
    Read More
  • 23
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    10 - 49 employees
    Redmond, WA
    Webtual Global Inc., a custom software development company, was founded in 2019. The company offers Custom Software Development and Enterprise App Modernization.
    Read More

    Industries

  • 24
    (0 Reviews)

    Not yet reviewed.

    $10,000+
    2 - 9 employees
    Bellevue, WA
    Astra, a web development company, offer Web Development and Mobile App Development. They were established in 2022.
    Read More
  • 25
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    2 - 9 employees
    Seattle, WA
    Established in 2011, Generalsoft Corporation is a custom software development firm. Headquartered in Seattle, Washington, the team specializes in Custom Software Development and cloud consulting & SI.
    Read More
  • 26
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    2 - 9 employees
    Seattle, WA
    V37 is a custom software development company located in Seattle, Washington. Launched in 2022, the team specializes in Custom Software Development and Web Development.
    Read More
  • 27
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    Bellevue, WA
    Established in 2023, Fuze Studio is a website development firm. In Bellevue, Washington, the team specializes in Web Development and Web Design.
    Read More
  • 28
    (51 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    50 - 249 employees
    Seattle, WA

    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.  

    Read More

    Clients

    FWD Insurance

    Industries

  • 29
    (4 Reviews) 4.9

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    2 - 9 employees
    Tacoma, WA

    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. 

    Read More

    Clients

    grinev.software

    Industries

  • 30
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    50 - 249 employees
    Lake Stevens, WA
    Webuters Technologies Pvt. Ltd. Is a Noida, India-based CRM consulting and SI company. Founded in 2015, the team provides CRM consulting and SI and Artificial Intelligence.
    Read More

    Industries

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