DesignRush expert analysts recognized the top software development companies in Washington that create high-performance solutions for businesses of all sizes and across industries. Find the right software development partner based on average project cost, reviews and more.

Best Washington Software Development Firm Rankings

5 Companies - Rankings updated: August 30, 2026

DesignRush evaluates each agency using expert assessment and client feedback to inform your choices. Some featured agencies have paid placements.

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  • Mobcoder

    AI-Native, Business-Ready Development Services. Engineered to Scale

    At Mobcoder AI, certified engineers and data scientists help you identify high-ROI AI use cases and operationalize them at scale. With 150+ deployments, CMMI Level 3 certification and 12+ years of experience, we build AI solutions governed by design and model-agnostic frameworks...

    Top Services:

    • Mobile App Development
    • AI Development
    • Software Development
    • Web Development
    • VR/AR
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    100 - 249
    Average Hourly Rate
    $55/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    14 Projects Listed

    Mobcoder Services

    • Mobile App Development
    • AI Development
    • Software Development
    • Web Development
    • VR/AR
    • Staff Augmentation
    • IoT
    • Wearables
    • Design Services
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Cult.fit
    • University of Washington
    • Coinstar
    • Optus
    • Emami Frank Ross Ltd.
    • Unicef
    • Hero Electronix
    • WELSPUN
    • PAPA JOHN'S
    • Professional Beauty Group
    Data sourced from the agency's DesignRush profile

    Mobcoder Reviews & Testimonials

    • Ousmane Ouane
      Ousmane Ouane VP Product & Business Development at Sportstech Brands Holding GmbH
      5.0 ★

      Mobile App Development Review from Ousmane Ouane

      End to End Development of multiple mobile and IoT applications, including APK and SDKs for fitness devices and much more. Successful release of apps, development of SDK and APK for fitness devices, and onboarding of thousands of Sportstech customers. Mobcoder was easy to work with, professional, and committed. It was a joy to work with them.

    • AJ Greenberg
      AJ Greenberg Co-founder at Biograph
      5.0 ★

      Mobile App Development Review from AJ Greenberg

      Mobcoder is a great team to work with. They are professional, responsive, and able to execute any of your development needs. We've worked with several different developers on the team and they all have exceptional character. Definitely recommend working with them!

    • Brandon Straza
      Brandon Straza Founder at The Success Finder
      5.0 ★

      Software Development Review from Brandon Straza

      Mobcoder has been amazing to work with. Their communication as well as their follow through is unlike any other team we've worked with to develop our platform. They were prompt, thought for themself, and brought us their own ideas as well. They worked side by side throughout the entire process. We look forward to a continued relationship moving forward.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.9 4.9 (15)
    4.9 4.9 (11)

  • Jelvix

    GLOBAL TECH PARTNER FOR DIGITAL TRANSFORMATION AND SOFTWARE INNOVATION

    Jelvix is a global tech partner with 15+ years of experience, empowering industry leaders and startups. With 450+ IT experts, we drive digital transformation across Europe, North America, Nordics, and Southeast Asia...

    Top Services:

    • Software Development
    • Mobile App Development
    • VR/AR
    • AI Development
    • IoT
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    500 - 999
    Average Hourly Rate
    $70/hr
    Portfolios Count
    10 Projects Listed

    Jelvix Services

    • Software Development
    • Mobile App Development
    • VR/AR
    • AI Development
    • IoT
    • Software Testing
    • Big Data Analytics
    • IT Services
    • UI/UX Design
    • CRM Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • IKEA
    • Auchan
    • Zeiss
    • Stihl
    • Canon
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • Serbyte

    More than a website, a growth engine.

    Serbyte Web Design & Development builds custom websites that function as growth systems, combining web design, Next.js development, SEO, analytics, lead capture, and automation to help businesses turn traffic into leads and sales...

    Top Services:

    • Web Design
    • SEO
    • Web Development
    • Software Development
    • UI/UX Design
    • Show more
    Location
    Kirkland, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    6 Projects Listed

    Serbyte Services

    • Web Design
    • SEO
    • Web Development
    • Software Development
    • UI/UX Design
    • Digital Marketing
    • PPC
    • AI Development
    • Design Services
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Vets Choice Insurance
    • RC Concrete
    • Bespoke Tint & PPF
    • Entitled
    • Iron & Oak
    • Herbanatural CO
    Data sourced from the agency's DesignRush profile

    Serbyte Reviews & Testimonials

    • Kris Meyer
      Kris Meyer Owner at Bespoke Tint & PPF
      5.0 ★

      Small Businesses Website Development Review from Kris Meyer

      Austin rebuilt our website from the ground up and helped turn Bespoke Tint & PPF into one of the top tint brands in Bellevue. The work started with a full redesign of our website, including branding, copywriting, conversion improvements, mobile optimization, and development. The new site immediately performed better and generated more leads after launch. After the website launch, we continued working together on SEO, AI search optimization, paid advertising support, analytics, A/B testing, and ongoing marketing strategy. He also helped improve our review visibility, local search presence, and overall positioning online. What started as a website project became an ongoing growth partnership focused on increasing traffic, leads, and customer acquisition.

    • Jeff Egbert
      Jeff Egbert Review from Google
      5.0 ★

      Jeff Egbert's Review Sourced from Google

      Austin built or website fast.And it works flawless. And he is always available for you to answer any questions. Or solve any problems.great experience.

    • Uffy 666
      Uffy 666 Review from Google
      5.0 ★

      Uffy 666's Review Sourced from Google

      very innovative and solid work. this service is invaluable in the climate of an ever evolving digital landscape. will definitely be coming back again.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.3 4.3 (1)
    5.0 5.0 (8)

  • 9series

    Handcrafted Technology Solutions

    At 9series, we help organizations move beyond traditional software by building intelligent systems powered by AI...

    Top Services:

    • Mobile App Development
    • AI Development
    • IoT
    • Software Development
    • Cloud Consulting
    • Show more
    Location
    Bellevue, Washington
    Number of Employees
    250 - 499
    Average Hourly Rate
    $40/hr
    Portfolios Count
    3 Projects Listed

    9series Services

    • Mobile App Development
    • AI Development
    • IoT
    • Software Development
    • Cloud Consulting
    • DevOps Consulting
    • Digital Services
    • Digital Strategy
    • eCommerce Development
    • Web Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • iWayTrack
    • Overlay Planner
    • Product Tube
    Data sourced from the agency's DesignRush profile
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  • Flower Press Interactive

    Insights, for better experiences.

    Flower Press Interactive designs and builds websites, apps, and platforms. We take early ideas and bring them into a user-validated, production-ready state. From marketing websites to internal systems, we turn complex problems into products worth building...

    Top Services:

    • Web Design
    • UI/UX Design
    • Web Development
    • Software Development
    • Mobile App Development
    • Show more
    Location
    Medina, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $165/hr
    Minimal Budget
    $10,000 - $25,000

    Flower Press Interactive Services

    • Web Design
    • UI/UX Design
    • Web Development
    • Software Development
    • Mobile App Development
    • Product Design
    • WordPress Website Design
    • AI Development
    • DevOps Consulting
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Stanford
    • PhotoBucket
    • BlueKai
    • Project Equity
    • MD Applicants
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

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