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
11 Companies-Rankings updated: September 06, 2026
We evaluate every agency on DesignRush according to expertise credentials and client satisfaction ratings. Some placements are sponsored.
VerifiedVerified by the DesignRush team for authenticity and credibility.
World's #1 Rated & Reviewed App, Website & Software Development Company
Probey Services builds websites and mobile apps on WordPress, Shopify, and Flutter, for clients like Lineage and Gunzilla Games. Its team of 320+ developers covers eCommerce, healthcare, and edtech across 30+ countries. Best fit for SMBs needing affordable development services...
Top Services:
Mobile App Development
Software Development
Web Development
Web Design
WordPress Website Design
Show more
Location
Seattle, Washington
Number of Employees
250 - 499
Average Hourly Rate
$10/hr
Minimal Budget
Under $1,000
Portfolios Count
94 Projects Listed
Probey Services Services
Mobile App Development
Software Development
Web Development
Web Design
WordPress Website Design
Digital Marketing
Digital Services
SEO
IT Services
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Bartisans
Samyakk
30 Days Fitness
Isharya
The Estate Residences
VegenMart
Fresh Menu Application
PRAO Fashion Jewellery
Audentia Space
Wings of Change
Data sourced from the agency's DesignRush profile
Probey Services Reviews & Testimonials
Rajat Sinh Founder at Aaayan Systems
5.0★
Web Development Review from Rajat Sinh
Probey transformed our outdated website into a modern, high-performing platform by understanding our business goals and delivering the right solutions. Since the launch, we have seen significant growth in website traffic, lead conversions, and operational efficiency through their backend integrations. Impressed with their expertise and quality of work, we also trusted Probey with our CRM development project as well. Thank you to the entire Probey Services team for your professionalism and support.
Roshan CEO at NanoTherapX
5.0★
Web Design Review from Roshan
This is Roshan, CEO at NanoTherapX. Working with Probey Services for our CRM Development. What stood out most was their stability, consistency, reliability, and a smooth implementation. The CRM has streamlined our client management, improved team efficiency, and helped us manage operations more effectively. Since its implementation, we've seen better productivity and consistent business growth. I highly recommend Probey Services UK to any business looking for a reliable technology partner.
Tejaswini Director at Green Matter Packaging
5.0★
Mobile App Development Review from Tejaswini
What stands out most about Probey Services is their discipline-no missed calls, no vague timelines, and no surprises. They built our mobile app with a level of professionalism that made us feel like a priority throughout the project. The delivery was on schedule, the code quality was excellent, and the final product met high standards. Since the app launch, we've seen consistent business growth, and managing customer orders has become much more efficient. I highly recommend Probey Services UK to any business looking for a dependable technology partner.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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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
Show more
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
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
Show more
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
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
ELEK+RIK: Web App Development, Mobile App Development for iOS & Android, AI Integration & Development Experts for Long-Term US Projects since 2010...
Top Services:
Mobile App Development
Software Development
Web Development
Blockchain
VR/AR
Show more
Location
Seattle, Washington
Number of Employees
Under 49
Average Hourly Rate
$60/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
18 Projects Listed
ELEK+RIK Services
Mobile App Development
Software Development
Web Development
Blockchain
VR/AR
AI Development
eCommerce Development
Software Testing
IT Services
WordPress Website Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Coca - Cola
Mercedes
BMW
VeChain
Sony
Nike
Toyota
Hyundai
McDonald's
Chang
Data sourced from the agency's DesignRush profile
ELEK+RIK Reviews & Testimonials
Philip Wilson Managing Director at Premier Automation Ltd
5.0★
Web Development Review from Philip Wilson
ELEK+RIK team provided a streamlined process that was both simple and enjoyable. They kept to the budget and communicated well throughout the project. ELEK+RIK comes highly recommended and we would work with ELEK+RIK again if given the opportunity.
George McKerrow CEO at Ted's Montana Grill
5.0★
Mobile App Development Review from George McKerrow
ELEK+RIK has worked on improving our React Native mobile app. We had the skeleton of an app, but they were able to do an end-to-end re-design of each of the main pages. Since then, they`ve successfully implemented around ~20 different features on our mobile app. We share a spec and design, they provide an estimate and occasionally some design options, then when completed create a PR on GitHub. Their code is well-organized, easy to follow, and rarely do we have to go back-and-forth about bugs. They are also excellent communicators - carefully following threads on Slack, effectively communicating design and engineering tradeoffs, and even producing a 10m Loom video walking through a diagram. Their communication is top-notch. They are super easy to work with even though we are on very different time zones. And, I am impressed at the speed and execution of their development.
John Riley Executive Vice President at MediaCentric
5.0★
Web Development Review from John Riley
ELEK+RIK was tasked with creating a website for our company from scratch. They were professional, communicative, and dedicated to delivering an exceptional website that perfectly captured the essence of our company while exceeding our expectations. They are a talented, reliable, and customer-focused web design and development company that I would highly recommend to anyone.
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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
Show more
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
Veteran-owned AI automation agency offering full-stack services: AI agents, workflow automation, web development, SEO, digital marketing, CRM/Salesforce consulting, cybersecurity & self-hosted solutions. BYOK pricing from $2,500 clients own everything. No subscriptions...
Top Services:
AI Development
Software Development
CRM Consulting
Web Development
Cybersecurity
Show more
Location
Seattle, Washington
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
1 Project Listed
AutomateNexus Services
AI Development
Software Development
CRM Consulting
Web Development
Cybersecurity
Cloud Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Curated Travel For You
KourtLit
Techflow
Data sourced from the agency's DesignRush profile
AutomateNexus Reviews & Testimonials
Jarrell A. Green, MBA-DA CEO-FOUNDER at KourtLit, Inc.
5.0★
Small Businesses Website Development Review from Jarrell A. Green, MBA-DA
AutomateNexus built our entire e-commerce website for KourtLit from scratch. We sell portable pickleball court LED projectors and needed a professional storefront that could handle orders, inventory, and customer communication.They delivered a modern, mobile-friendly site with a smooth checkout flow, backend database for order and inventory management, and automated email sequences for order confirmations, shipping updates, and follow-ups. They also set up our SEO foundation so we're positioned to rank for product searches.What stood out was their BYOK approach we own everything they built. No recurring platform fees, no vendor lock-in. They finished the entire project in July 2025 and handed it off with full documentation and training.If you need an e-commerce site built fast and built right, these are the people to call.
Arionne Patterson M.S. Owner at Curated Travel For You
5.0★
AI Development Review from Arionne Patterson M.S.
We hired AutomateNexus to build a new website for our boutique travel agency, and they delivered far more than we expected. Erin and the team built us a custom website, client portal, and admin dashboard from scratch plus set up automations that completely changed how we run the business.Before working with them, we were drowning in manual tasks: sending confirmations, chasing documents, following up with leads. Now most of that runs automatically. The client portal lets our travelers access their itineraries and documents anytime, and the admin backend makes managing bookings so much easier.What impressed us most was the strategic thinking. They didn't just build what we asked for they helped us rethink our entire workflow and showed us where AI and automation could save us time. We're saving 15-20 hours a week on admin work we used to do manually.Communication was excellent throughout, delivery was on time, and the final product exceeded expectations. If you're a small business looking to modernize your operations without getting locked into expensive monthly software, I highly recommend AutomateNexus.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Embark on your digital transformation journey with AccelOne's Software Development delivery model, strategically designed for optimal outcomes. Initiate your digital transformation seamlessly through our comprehensive nearshore and US-based services...
Top Services:
Software Development
Mobile App Development
Blockchain
UI/UX Design
eCommerce Development
Show more
Location
Seattle, Washington
Number of Employees
100 - 249
Minimal Budget
$25,000 - $50,000
Portfolios Count
5 Projects Listed
AccelOne Services
Software Development
Mobile App Development
Blockchain
UI/UX Design
eCommerce Development
Web Development
AI Development
Staff Augmentation
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
HSBC
Xapo
University of Washington
Pan American Energy SL
Cartoon Network
Data sourced from the agency's DesignRush profile
AccelOne Reviews & Testimonials
Gustavo Lemos Review from Google
5.0★
Gustavo Lemos's Review Sourced from Google
I've been working in AccelOne for several years already and it's an amazing place to work. Great people and a good variety of clients.
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
IT, Business, BPO, Audit, Tax and Advisory are just the beginning.
Grant Thornton LLP (US) is an IT, project management, audit, tax, AgTech, and BPO company headquartered in Chicago, Illinois with over 50 U.S. offices and access to a global network or member firms in over 135 countries. We offer a broad range of services in strategy and consulting, operations, technology and...
Top Services:
Accounting
Business Consulting
Market Research
HR Outsourcing
Software Development
Show more
Location
Seattle, Washington
Number of Employees
1000 & Up
Average Hourly Rate
$35/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
2 Projects Listed
Grant Thornton Services
Accounting
Business Consulting
Market Research
HR Outsourcing
Software Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Financial industry
Real estate industry
Media and Entertainment industry
Data sourced from the agency's DesignRush profile
Grant Thornton Reviews & Testimonials
Theodore Mall Review from Google
4.0★
Theodore Mall's Review Sourced from Google
One of the world’s leading organizations of independent audit, tax and advisory firms. Grant Thornton has revenues in excess of $1.9 billion and operates more than 50 offices.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
At Intention Labs, we're committed to authenticity in everything we do. We are proud to be an inclusive agency that is focused on the best experience for our clients and their customers...
Top Services:
Digital Services
Product Design
Branding
Web Development
UI/UX Design
Show more
Location
Seattle, Washington
Number of Employees
Under 49
Average Hourly Rate
$160/hr
Intention Labs Services
Digital Services
Product Design
Branding
Web Development
UI/UX Design
SEO
Software Development
Market Research
Video Production
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
OKKANTI
MamaSoul
Zeitgeist Coffee
Spailey Solutions
Edizeven
Novaby
WindEverest
Selby Lane Capitall
SmartCharts
PainNavigator
Data sourced from the agency's DesignRush profile
Intention Labs Reviews & Testimonials
Isaro Carter, Esq. Review from Google
5.0★
Isaro Carter, Esq.'s Review Sourced from Google
Working with Shawna at Intention Labs was amazing. We worked together on a website optimization project for my business. The results have been nothing but stellar--the site is more organized and converting way better than it was before. Additionally, Shawna is just a great person to work with. She has amazing ideas, she is so thorough with every detail, and she is just pleasant all around. I got really lucky finding Intention Labs and I think anyone who has the opportunity to work with them would feel the same way.
Corinne Vargas Review from Google
5.0★
Corinne Vargas's Review Sourced from Google
The team is professional, fast and knowledgeable. The they met and exceeded our needs regarding a quick turnaround on an app dev project. Highly recommend!
Kelly McKay Review from Google
5.0★
Kelly McKay's Review Sourced from Google
I can’t recommend Intention Labs enough. Their design and development work is exceptional. Shawna especially is an excellent communicator and the team turned things around ahead of schedule. Her team delivered an extremely clear and easy to navigate fully functioning website and web app. I’m thankful to have worked with Intention Labs as they really offer a full-service!
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews