Top 90 Software Development Companies in Seattle
December 2022Looking for a top software developer in Seattle?
As the use of mobile and web apps rise, your business’s digital presence becomes even more important. The biggest challenge facing organizations is how they can keep up in the digital world. The best way is to continuously develop up-to-date software that allows your organization to maintain an impactful digital presence.
To assist you in your search for a partner, we’ve compiled this list of the top software development companies in Seattle. Browse descriptions, feedback, and awards to find which can best suit your company’s needs. If you need more support, tell us about your project, and we'll match you with recommended companies.
List of the Best Seattle Software Developers
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Featured providers
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- $10,000+
- 50 - 249 employees
- Vienna, VA
Exoft is a digital development company based in Lviv, Ukraine. Founded in 2013, Exoft's team of 40 employees provides web development, mobile app development, and custom software development services for small, mid-market, and enterprise clients alike in the financial and business services and healthcare industries.
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- $25,000+
- 250 - 999 employees
- Artesia, CA
Radixweb is a software development company based in India. Founded in 2000, the team of 650+ has worked with over 3,000 clients with their software development and web development needs.
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- $25,000+
- 250 - 999 employees
- Orlando, FL
Simform is a custom software development company founded in 2010. They have helped organizations ranging from startups, Fortune 500 companies, and WHO-backed NGOs. The team of 250+ delivers digital solutions for their clients and offer artificial intelligence services, API integration, dedicated software development team, and software testing services.
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1
- $10,000+
- 10,000+ employees
- Bellevue, WA
Beyondsoft Consulting is a business IT and consulting company based in Bellevue, Wash., with offices in Torrance, Calif.; Singapore; Beijing; Noida, India; and Kyiv, Ukraine. The company, founded in 1995, has more than 10,000 employees and provides BI & big data consulting & SI, cloud consulting & SI, IT strategy consulting, custom software development, and enterprise app modernization services. Beyondsoft Consulting serves enterprise and mid-market companies in various industries that include IT, automotive, and financial services.
Clients
- HP
- Microsoft
- Tokio Marine
- Team Health
Industries
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Beyondsoft Consulting Inc. worked on two projects for a physician staffing company. First, they did the data hub’s architectural diagram for the, and then they wrote an automated system patching code.
"They were very amicable, and we always had friendly two-way communication."
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2
- $25,000+
- 10 - 49 employees
- Seattle, WA
Zazz is a Seattle-based mobile app development company founded in 2011. They have an additional office in San Francisco. Their team of approximately 50 employees serves clients of all sizes and industries. In addition to app development, they also specialize in enterprise app modernization and UX/UI design.
Clients
- Inclose
- Ideal Smart
- Sparehandz
Industries
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Zazz provides iOS mobile app development for a parental control platform using Swift. The team created wireframes, a logo, and branding. They’ve also used MDM technology and are now in the testing phase.
“Working with them has been an absolute delight from a project management standpoint.”
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Featured providers
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- $25,000+
- 10 - 49 employees
- Sunnyvale, CA
Diffco is a company of world-class senior developers in Mobile, Web, and AI to launch, accelerate, and support your business applications. 13+ years of experience and 1000+ successfully launched projects. We succor our customers to become market leaders.
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- $1,000+
- 2 - 9 employees
- Vancouver, Canada
Custom software development company deltAlyz Corp. Is in Vancouver, Canada. Founded in 2019, the small team focuses on custom software development, BI & big data consulting & SI, Artificial Intelligence, enterprise app modernization, and more.
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- $5,000+
- 50 - 249 employees
- Wilmington, DE
Digital strategy and website development company DigiTrends (Pvt) Ltd. Was established in 2010. The firm provides digital strategy and web development and has a midsize team.
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3
- $25,000+
- 50 - 249 employees
- Bellevue, WA
MSOFT (formerly MediaSoft.team) is a Washington State, software development firm with an office in Bellevue, Seattle area. Founded in 2014, MSOFT (formerly MediaSoft.team) team of over 270 employees specializes in custom software, website, and mobile app development for enterprise clients. MSOFT (formerly MediaSoft.team) has partners in a variety of industries including Retail, GameDev, and FinTech.
Clients
- Zdravcity
- CarPrice
- Moio Delo
- Svaznoy Travel
Industries
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MSOFT (formerly MediaSoft.team) developed a mobile app, as well as the technology to connect a vast database of content to the app. They also implemented the graphic design.
"During the development process, they came up with a number of new ideas that greatly improved the app."
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4
- $10,000+
- 2 - 9 employees
- Seattle, WA
Black Antelope is a digital creative industry headquartered in Seattle. It was founded in 2009 and has expanded to additional locations in Sacremento, Calif. and London. Black Antelope has about 3 employees that serve a range of enterprise and small- to mid-sized businesses. Services include custom software development, web development, and web design.
Clients
- UC Berkeley (Berkeley, CA)
- UCSF (San Francisco, CA)
- Monterey Bay Aquarium (Monterey, CA)
- Fujitsu Laboratories Of America (Sunnyvale, CA)
Industries
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Black Antelope provided development resources to update an existing website for a large research university. The old site was modernized, redesigned, and migrated onto the latest version of Drupal.
"Black Antelope was able to produce anything we asked for."
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5
- $25,000+
- 2 - 9 employees
- Seattle, WA
Lunarbyte.io is a development agency based in Seattle. Since 2019, the 3-person team has built websites, custom software, and mobile apps for predominantly small businesses.
Clients
- DDM Imports
- Clean the Scene
- Preflight Mitigator
- Dollar Flight Club
Industries
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Lunarbyte.io developed software programs for a testing firm. They met with their client’s multiple times to outline the project. Since then, they’ve troubleshot problems and fixed bugs as needed.
“They usually complete the task within 24-hours or by the end of the week.”
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6
- Undisclosed
- 250 - 999 employees
- Seattle, WA
Projekt202 is a software development and marketing company based in Addison, Texas. They were founded in 2003 and have a team of 285 employees. They specialize in custom software development, UX/UI design, and mobile app development to improve their client’s customer and employee experiences.
Clients
- Mercedes-Benz Financial Services
- Capital One
- Samsung Electronics
- The Container Store
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projekt202 gathered data through user research (individual customers, commercial clients) to design and produce a commercial banking platform. Their design joins modern style with effective functionality.
"Their ideas were unique and thought-provoking..."
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7
- $25,000+
- 10 - 49 employees
- Seattle, WA
Founded in 2010 in Seattle, Billberry is a software development studio creating custom software, web apps, and digital products in partnership with some of the world's biggest brands. They have a veteran team of fewer than 50 strategists, designers, and developers who work in partnership with clients to help them grow, innovate, and move their businesses forward. Clients include businesses of all sizes in various industries, including business services, consumer products and services, and financial services.
Clients
- Days for Girls
- Snohomish County Public Utilities
- Impinj
- The Live You Can Save
Industries
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Bilberrry completed a website rebuild, including a proprietary dashboard and integrations with web communication platforms, and provides ongoing maintenance.
"They truly partner with you to help you get the best product, rather than just doing what you ask."
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8
- $100,000+
- 250 - 999 employees
- Seattle, WA
Founded in 2007, Theorem is a software development firm. The midsize team specializes in custom software development, ux/ui design, IoT development, IT strategy consulting, and more. The company is based in Los Angeles, California; Santa Monica, California; New York, New York and San Francisco, California.
Clients
- AT&T
- Starbucks
- Caterpillar
- American Express
Industries
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TheoremOne developed a strategy and an MVP for an oil and gas construction marketplace. They provided a full delivery team, two full stack engineers, and QA testers.
"Their thought-leadership in design and their ability to quickly pick up on what we were looking for from the platform."
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9
- $10,000+
- 10 - 49 employees
- Medina, WA
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.
Clients
- Insurance Lounge
- Brown Bear Car Wash
- Geek Girl Careers
- World Perspectives
Industries
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A medical device firm had an outdated site, and they hired Flower Press Creative Studio, LLC to create their WordPress site. The site featured the company's description, contact form, and downloadable brochure.
"Their efficiency was their strong point."
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10
- Undisclosed
- 50 - 249 employees
- Seattle, WA
Smashing Ideas is a mobile app development company that offers an array of services such as UI/UX design, web design, data strategy and analytics, and quality assurance and testing. Since its founding in 1996, Smashing Ideas has grown to over 50 employees who are passionate, curious, and creative.
Clients
- ReachNow
- Philips
- Johnson Controls
- Sony Pictures Television
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Smashing Ideas developed mobile applications which could be used for a news outlet's weather broadcasting. Their work remains ongoing.
"The part where Smashing Ideas just rocks is creating an idea that they can execute well on."
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11
- $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.
Industries
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A SaaS company hired Slashdev to develop a direct-to-fans platform that would help digital creators mentor young artists. They helped with product discovery, roadmap building, and MVP creation.
"They were a great fit for startups."
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12
- $25,000+
- 50 - 249 employees
- Bellevue, WA
Redtech is a custom software development firm. They are located in Bellevue, Washington and have a midsize team. Their services include custom software development, non-voice bpo/back office services, digital strategy, web development, and more. The agency was established in 1995.
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Redtech provided BI and analytics for a software company. They redesigned a learning catalog and supported in understanding its current status.
"Their subject matter expertise and professionalism were impressive."
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13
- $25,000+
- 2 - 9 employees
- Seattle, WA
Northwest Independent Ruby Development is a digital agency based in Seattle. Since 2011, the small team of four has specialized in providing web and custom software development.
Clients
- University of Washington
- Avvo
- Whitepages
- Behavioral Tech
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NIRD provided resources to help bring the Linehan Suicide Safety Net to market. They made the online software HIPAA compliant and reworked the backend to make it more stable.
"NIRD helped us get our program in a place where it was healthy and functioning the way it should be."
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- $5,000+
- 10,000+ employees
- Seattle, WA
Globant is a software development company based in Buenos Aires, Argentina, with offices in San Francisco and Mexico City. The company, founded in 2003, has more than 12,500 employees who provide, among others, web development, digital strategy, and social media marketing services to various companies.
Clients
- Electronic Arts
- BBVA
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Globant (formerly Belatrix Software) provided additional .NET and development for a prototype developed by an in-house team that needed faster development for a lower budget.
"I’ve used a lot of contractors and this was the best experience I’ve ever had."
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15
- $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.
Clients
- Microsoft
- American Express
- Volkswagen
- Coach
Industries
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PYCOGroup developed an iOS app for tablets that allows customers to customize products in-store. Since launch, they’ve provided ongoing maintenance and new product/offer updates.
"Whenever we’ve brought up challenges, they’ve ironed them out quickly."
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16
- Undisclosed
- 10 - 49 employees
- Seattle, WA
SB Develops is a development agency based in Seattle with no more than 10 experts. They specialize in web development, mobile app development, and UX/UI design solutions for clients that work in the industries of consumer products, IT services, and more.
Clients
- Cuddle Lock
Industries
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SB Develops built an iOS and Android application as well as a web dashboard for a property management company. They also provided app testing. Their work focused particularly on the system's UX/UI.
"Their UX/UI dominates what other companies in our industry have. We’re years ahead of the competition."
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17
- $10,000+
- 50 - 249 employees
- Bellevue, WA
Virtuosity Consulting, a custom software development firm, was launched in 2008. They are located in Bellevue, Washington and Navi Mumbai, India and have a midsize team. Their services include custom software development, IT managed services, enterprise app modernization, web development, and more.
Industries
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A software company hired Virtuosity Consulting for staff augmentation. The team supplied qualified process-driven and self-motivated managers for early planning, daily execution, monthly releases, and more.
"The agency and the candidates they supplied really took ownership of the project."
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18
- $1,000+
- 250 - 999 employees
- Bellevue, WA
E-commerce development firm Neighborsoft.team was established in 2009. Their midsize team is headquartered in Bellevue, Washington. Neighborsoft.team provides e-commerce development, web development, custom software development, mobile app development, and more.
Industries
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An investment software firm hired Neighborsoft.team to develop their digital platform. The platform automated the client's internal processes and provided them with tools to easily onboard investors.
“I’m most impressed with Neighborsoft.team’s expertise and patience.”
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19
- $25,000+
- 250 - 999 employees
- Seattle, WA
Neudesic is a technology company with offices in Irvine, CA, Atlanta, GA, Chicago, IL, Irving and Houston, TX, Denver, CO, Las Vegas, NV, Exton, PA, Tempe, AZ, Portland, OR, New York, and India. It specializes in big data consulting, custom software development, cloud consulting, and mobile app development. The agency of more than 800 employees was founded in 2002. Most clients work in the healthcare, energy, and gaming industries.
Clients
- Microsoft
- SRP
- Kelley Blue Book
- Whole Foods
Industries
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Neudesic provided Azure development staff augmentation for a legal services company. The team helped move and transform the client's data using Azure Data Factory, in order to build Power BI dashboards.
"Their programmers were top-notch."
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- $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.
Clients
- Rudy's
- naturewise
- Elm Coffee Roasters
- Holland America Line
Industries
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Helpful Human provides custom software development services for an aerospace consulting services company. They are helping the client develop an advanced production scheduling software.
"They are highly dynamic and have a great level of technical knowledge to support our requirements."
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21
- $1,000+
- 2 - 9 employees
- Redmond, WA
Dynomind.tech is a custom software development firm. They provide custom software development, web development, mobile app development, BI & big data consulting & SI, and more and were launched in 2015. Their small team is Redmond, Washington-based.
Industries
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Dynomind.tech provided custom software development services for a maintenance management platform. They used the client's design and built the platform using Node.js, React, Flutter, and Socket.io.
"It's really simple to work with them. They work together and are lively."
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22
- $10,000+
- 10 - 49 employees
- Bellevue, WA
KuikaSoft is a custom software development company established in 2017. Located in Bellevue, Washington and İzmir, Turkey, their small team specializes in custom software development, mobile app development, and web development.Visit SiteIndustries
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23
- $1,000+
- 50 - 249 employees
- Seattle, WA
ConnectPOS is a custom software development company. Founded in 2013, the agency is in Seattle, Washington. The midsize team focuses on custom software development and application management & support.
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24
- $10,000+
- 10 - 49 employees
- Bellevue, WA
User experience agency Amberteq was founded in 2008. The company offers ux/ui design, custom software development, web development, mobile app development, and more and has a small team. The company is in Bellevue, Washington.Visit SiteIndustries
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25
- $5,000+
- 10 - 49 employees
- Seattle, WA
With locations in San Diego and Seattle, LabKey specializes in cloud computing and custom software development. They were founded in 2005 and have about 40 employees. The agency works with various clients in the healthcare, education, and information technology industries.
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- MIT
- Genomics England
- National Cancer Institute
- Immune Tolerance Network
Industries
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26
- $10,000+
- 50 - 249 employees
- Seattle, WA
DMC, Inc. is an engineering and development firm founded in 1996. It is headquartered in Chicago, but has other locations in Somerville, Mass.; Denver, Colo.; New York, N.Y.; Houston, Texas; and St. Louis, Mo. DMC, Inc. has about 150 employees. While DMC's origins are in robotics and manufacturing automation, they currently offer custom software development and big data consulting services.
Clients
- 3M
- Ford
- Cadbury
- Bosch
Industries
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A large ground logistics firm hired DMC to develop a unique IoT device for their centrally-owned fuel depots. DMC created a device to speed up the refueling process and provide useful data to the firms that own the depots.
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27
- $10,000+
- 250 - 999 employees
- Bellevue, WA
SOUTHWORKS is a custom software development company based in London, United Kingdom; Bellevue, Washington and Vancouver, Canada. The company focuses on custom software development, cloud consulting & SI, BI & big data consulting & SI, and cybersecurity and has a midsize team.The company was launched in 2004.
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28
- Undisclosed
- 10 - 49 employees
- Kirkland, WA
Jetstream Software, Inc. Is a software development company launched in 1994. The small team provides custom software development. The agency is in Kirkland, Washington.
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29
- Undisclosed
- 50 - 249 employees
- Kirkland, WA
Dev9 is a midsize custom software development company headquartered in Kirkland, Washington. Established in 2010, the team offers custom software development and IT managed services.
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30
- $5,000+
- 10 - 49 employees
- Seattle, WA
Rooster Park Consulting is a software development company located in Seattle. It was founded in 2008 and has grown to a team of nearly 30 that does custom software development and IT staff augmentation for mainly IT and retail companies.
Clients
- Disney
- ESPN
- HBO
- Microsoft
Industries
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An online food and wine retailer felt stagnant with its vendor and hired Rooster Park Consulting to move forward. Rooster Park Consulting redesigned and rebuilt the customer experience, improved its shipping logistics and did analytics. To do all this, Rooster Park Consulting built a custom retail ordering and back office application.
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