Find the top-rated software companies in Seattle that offer internationally competitive services and deliver high-performance products that help organizations boost their productivity, enhance their business operations and drive higher ROI. You can use our handy tool to filter listings by cost, reviews and size and select the most suitable partner for your needs.
Best Seattle Software Development Firm Rankings
7 Companies-Rankings updated: September 06, 2026
We evaluate every agency on DesignRush according to expertise credentials and client satisfaction ratings. Some placements are sponsored.
Zazz builds custom enterprise software using Node.js, .NET, Java, and Python, with SOC 2, ISO 27001, and HIPAA compliance. The software development agency serves the Government of Ontario platform and global financial services firms. Best fit for enterprises needing security-first software development...
Top Services:
Mobile App Development
IT Services
Software Development
Staff Augmentation
IT Compliance Solution
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Location
Seattle, Washington
Number of Employees
250 - 499
Average Hourly Rate
$45/hr
Portfolios Count
36 Projects Listed
Zazz Services
Mobile App Development
IT Services
Software Development
Staff Augmentation
IT Compliance Solution
Cybersecurity
Managed Services
Cloud Consulting
DevOps Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
JP Morgan
BBC News
PayPal
Harvard Innovation Labs
HBO
Jeddah Season
McDonald's
NBA
Honda
Citibank
Data sourced from the agency's DesignRush profile
Zazz Reviews & Testimonials
Sam Zaid CEO at Getaround
5.0★
Mobile App Development Review from Sam Zaid
Their team's technical proficiency and creativity have significantly contributed to the success of our world's first connected carsharing marketplace. Zazz not only met but exceeded our expectations, delivering a seamlessly integrated and user-friendly mobile app that has truly empowered people to carshare everywhere. The collaboration with Zazz has proven to be a valuable partnership, marked by open communication, timely delivery, and a genuine dedication to our mission.
Jay Thrash SENIOR IOS DEVELOPER at Epic Games
5.0★
Mobile App Development Review from Jay Thrash
Their unparalleled expertise and dedication to excellence were evident throughout the entire collaboration. Zazz's team consistently demonstrated a deep understanding of our vision, translating it into a seamless and innovative mobile application. Their commitment to quality and precision in every aspect of the development process was truly impressive. Zazz's ability to navigate complex challenges with agility and deliver solutions that exceeded our expectations was instrumental in the success of our project.
Don Harmon Director of Global IT Services at Dorel Juvenile
5.0★
Mobile App Development Review from Don Harmon
Zazz's commitment to delivering a high-quality mobile app for Dorel Juvenile was evident throughout the entire development process. The team consistently communicated progress, promptly addressed any concerns or modifications, and ensured that the final product not only met but exceeded our expectations. The mobile app developed by Zazz not only showcased cutting-edge technology but also reflected a deep understanding of the child-centric focus that Dorel Juvenile upholds.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
VerifiedVerified by the DesignRush team for authenticity and credibility.Award WinnerRecipient of a Best Design Award for outstanding work.
Meet The Partner Behind Your App's Success | Make It App'n!
Meet your award-winning app development team, dedicated to turning your vision into scalable and profitable digital apps and software...
Top Services:
Mobile App Development
Software Development
Web Development
eCommerce Development
WordPress Website Design
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Location
Seattle, Washington
Number of Employees
Under 49
Average Hourly Rate
$99/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
52 Projects Listed
Chop Dawg Services
Mobile App Development
Software Development
Web Development
eCommerce Development
WordPress Website Design
UI/UX Design
Software Testing
Wearables
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Alpha Paw
Big Brothers Big Sisters
Choice Home Warranty
City of Peachtree Corners, Georgia
City of Philadelphia, Pennsylvania
City of Springboro, Ohio
CRBO
FlynnO'Hara
Hilton
Innovative
Data sourced from the agency's DesignRush profile
Chop Dawg Reviews & Testimonials
Malik Boyd Co-Founder at GyftMasters
5.0★
Mobile App Development Review from Malik Boyd
Chop Dawg helped us turn our gifting app concept into a working prototype, handling wireframes, UI design, coding, data storage, and automation from scratch. Their team has been transparent, proactive, and highly responsive throughout the process. They provide clear schedules, flag issues early, and keep us informed at every stage. We’ve been very happy with the prototype so far and are excited to move into full iOS and Android development.
Anonymous Founder at Cuddlebids
5.0★
Mobile App Development Review from Anonymous
Chop Dawg took our iOS app from concept to launch, handling design, development, AWS, and App Store requirements. Their team was responsive, practical, and highly supportive throughout the process. They also stayed involved after launch with updates and fixes, and even helped promote the app through their network. Their support contributed to strong early growth and helped position the company for a later acquisition.
Anonymous Executive at Undisclosed
5.0★
Web Design Review from Anonymous
Chop Dawg supported us with UX/UI design for a new fintech web application. They took the time to understand our users, product requirements, features, and overall vision before moving into design. Over a 6 to 7 week engagement, their team shared regular Figma reviews, incorporated feedback quickly, and stayed highly responsive. They finished ahead of schedule with no budget issues, and the internal response to the final designs has been very positive. Their attention to detail, professionalism, and ability to keep the process organized made them very easy to work with.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
VerifiedVerified by the DesignRush team for authenticity and credibility.
Award Winning Web Design & Development Agency
Bilberrry builds web and mobile apps, headless eCommerce, and AI-enabled experiences for Deloitte, Harvard, and GoFundMe.org. The software development company is recommended for mid-market and enterprise organizations needing a strategic Seattle-based development partner...
Top Services:
Web Development
Web Design
Software Development
WordPress Website Design
eCommerce Development
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Location
Seattle, Washington
Number of Employees
50 - 99
Average Hourly Rate
$100/hr
Portfolios Count
19 Projects Listed
Bilberrry Services
Web Development
Web Design
Software Development
WordPress Website Design
eCommerce Development
UI/UX Design
Mobile App Development
Product Design
Cloud Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Deloitte
Delta Airlines
PepsiCo
SEE International
Impinj
Lockheed Martin
OfferUP
The Life You Can Save
Snohomish County
University of Washington
Data sourced from the agency's DesignRush profile
Bilberrry Reviews & Testimonials
Kelly Johnson eCommerce Specialist at Rapala VMC
5.0★
eCommerce Development Review from Kelly Johnson
Since partnering with Bilberry, we have seen a marked improvement in our websites stability and performance. Their team manages our backlogged issues with such efficiency that our monthly development spend has actually decreased. Estimates are consistently accurate, and we appreciate their proactive communication; if a projects scope evolves, they provide an updated estimate for approval before moving forward. Our monthly sprints are now seamless thanks to their reliable planning and ability to scale resources rapidly to meet even the tightest deadlines.
Adam Ely, PMP Director of Operations at Sands Investment Group
5.0★
Web Development Review from Adam Ely, PMP
As Director of Operations at Sands Investment Group, I partnered with Bilberrry to lead the redesign and rebuild of our website, enhance our marketing operations, and streamline internal workflows. We chose Bilberrry for their strong technical capabilities, cultural alignment, and outstanding reputation. The project followed a well-structured four-phase process: discovery, design, development, and launch. From the beginning, Bilberrry took a strategic and collaborative approach, conducting workshops and technical audits to define a scalable architecture and intuitive user experience. Their team went on to create custom designs for more than 20 pages, build a flexible design system, and ensure the site met key standards for SEO and accessibility.On the development side, they customized a robust content management system tailored to our needs, incorporating dynamic listing features such as saved searches, email alerts, and early-access content for select users. The new site also connected seamlessly with our internal tools, enabling greater efficiency and automation across teams.The impact was immediate and significant: we saw a dramatic reduction in manual processes. Our team is now better equipped to manage content independently, while the platform itself is built for long-term scalability and performance.Throughout the process, Bilberrry was responsive, professional, and incredibly easy to work with. They communicated clearly, incorporated feedback quickly, and consistently brought thoughtful, strategic ideas to the table. Bilberrry's unique blend of strategic insight, technical depth, and design acumen made them an invaluable partner in creating a high-performing, visually polished digital platform tailored to our business.
Ari Bixhorn VP, Marketing at Outpost
5.0★
Web Design Review from Ari Bixhorn
Bilberrry’s work gave our new website improved performance, greater SEO flexibility, and pages that are much easier to build. They delivered everything on time and kept communication proactive throughout. Their strong project management, technical expertise, and responsiveness built real trust during the process.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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
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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 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 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 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
Accenture is a renowned worldwide IT services company that excels in digital, cloud, and security solutions. With an extensive range of expertise across over 40 industries, we provide a comprehensive suite of services including Strategy and Consulting, Outsourcing, Interactive, Technology, IoT, and...
Top Services:
Software Development
Cybersecurity
IT Services
IoT
Big Data Analytics
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Location
Seattle, Washington
Number of Employees
1000 & Up
Portfolios Count
4 Projects Listed
Accenture Services
Software Development
Cybersecurity
IT Services
IoT
Big Data Analytics
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Education Non-profit
Healthcare Firm
Global Apparel Retailer
Data sourced from the agency's DesignRush profile
Accenture Reviews & Testimonials
Saurabh Choudhary Senior Consultant at LTI
4.0★
Financial Review from Saurabh Choudhary
In my experience it's a good place to work and start your career with, you will get to learn a lot of things which will be quite beneficial in long run.Accenture helps clients across various industries innovate and transform their businesses. Their focus on digital technologies, such as AI, cloud, and analytics, enables them to deliver impactful solutions. Overall, Accenture's commitment to innovation and client success makes them a leading player in the consulting industry.
Rishi Kumar Sr. Servicemax and Salesforce Developer at Boston Scientific
4.7★
Salesforce Review from Rishi Kumar
I had the opportunity to work with Accenture on implementing Salesforce with ServiceMax. Their expertise and dedication were impressive. Accenture's work on implementing Salesforce and the ServiceMax managed package was invaluable, significantly benefiting our organization's operations and efficiency. However, one area for improvement would be the documentation process. It was challenging to access comprehensive documentation, which slowed down certain aspects of our project. Nonetheless, I recommend Accenture as their talented team delivers exceptional results.
William Lewis Review from Google
5.0★
William Lewis's Review Sourced from Google
ISSA monthly meeting. Great venue. Good location. Extraordinary buffet at meeting. Interesting discussions.Accenture goes the mile to support our meetings and I always enjoy working with their team. By the way the view of LA is incredible.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
SoftDoes builds custom software, AI, and web applications for mid-market companies that need enterprise-grade results without the overhead of an in-house team. U.S.-based leadership. Full IP ownership. No lock-in...
Top Services:
Software Development
AI Development
Mobile App Development
Web Development
UI/UX Design
Show more
Location
Seattle, Washington
Number of Employees
50 - 99
Average Hourly Rate
$75/hr
Minimal Budget
$10,000 - $25,000
Portfolios Count
1 Project Listed
Soft Does Services
Software Development
AI Development
Mobile App Development
Web Development
UI/UX Design
Cloud Consulting
Blockchain
Software Testing
Digital Strategy
Big Data Analytics
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts