Our Top Picks

AccelOne
AccelOne
  • Other industries
  • eCommerce
  • Media
Seattle-based custom software development company AccelOne offers mobile software development for native and hybrid cross-platform applications on iOS/Android and Unity/Native. It uses programming languages such as Java, PHP, C++, .NET, and Node.js to create back-end/UX design, and JavaScript, Angular.js, React, and PHP when developing front-end/UI design web design. It also offers database/cloud development, as well as large-scale enterprise systems development.

The firm has an additional offices in Las Vegas and Buenos Aires, Argentina, where it provides access to human resources at 50% of the cost of U.S.-based resources, allowing the company to offer quality services at a reduced price.

Summary

AccelOne
AccelOne
  • Starting Price
    • $50 - $99 / hr
  • Address
    608 State Street South #100, Kirkland, WA 98033
  • Number of Employees
    10 - 49
  • Phone Number
    800-863-6814
  • Service Lines
    Custom Software Development
    UX/UI Design
    Mobile App Development
Industry Focus
  • Other industries
  • eCommerce
  • Media
AltaSource-Group
AltaSource Group
  • Media
  • Travel and Leisure
  • Arts, Entertainment & Music
AltaSource Group is a U.S.-based software consulting company located in Kirkland. It provides assessments of software programs that small businesses might be missing. With expertise in software development and IT solutions, AltaSource Group offers web design/development, mobile development, and enterprise and cloud solutions to small businesses across the Seattle area.

Software development and IT projects are offshored to the company’s center in Buenos Aires, Argentina, which offers more competitive pricing than the U.S. office while being in a similar time zone, making transactions smoother and quicker than offshoring to other countries.

Summary

AltaSource-Group
AltaSource Group
  • Starting Price
    • $50 - $99/hr
  • Address
    625 4th Ave. Suite 205, Kirkland, Seattle, Washington WA 98033
  • Number of Employees
    50 - 249
  • Phone Number
    425-827–7711
  • Service Lines
    Web Design, Web Development, Mobile App Development
Industry Focus
  • Media
  • Travel and Leisure
  • Arts, Entertainment & Music
Bilberrry
Bilberrry
  • Business services
  • Consumer products & services
  • Financial services
As a full-service agency, Bilberrry has worked with clients including ambitious start-ups, global nonprofits, and Fortune 500 companies to design and develop software. It specializes in back- and front-end development, systems design, UX/UI design, mobile application research and development, high-load enterprise systems, and web application development. Bilberrry’s portfolio of work includes the mobile-driven marketplace app OfferUp, modelling tool Impinj, and custom arts solutions website Grand Image.

With offices in Seattle and Kyiv and 34 full time employees, Bilberrry retains a flat organization structure, which helps get more personal with clients and solve problems more efficiently.

Summary

Bilberrry
Bilberrry
  • Starting Price
    • $100 - $149 / hr
  • Address
    111 S Jackson St, Seattle, WA 98104
  • Number of Employees
    10 - 49
  • Phone Number
    206-818-7436
  • Service Lines
    Web Design
    Custom Software Development
    Web Development
Industry Focus
  • Business services
  • Consumer products & services
  • Financial services
CASoft-Seattle
CASoft Seattle
  • Entertainment
  • Information Technology
This Seattle-based software development company provides services tailored to their clients’ unique needs. They use a holistic approach to software development to ensure the project is successful. CASoft Seattle starts with a deep understanding of clients' needs during discovery, feature analysis, and design. The appropriate documentation and design prototypes are then produced, which serves as a blueprint to build out the software.

CASoft Seattle ensures clients’ structural and architectural platform specifications are met using the appropriate programming languages and software stack. With core competency in Node.js, Angular JS, and Laravel PHP for the middle tiers and utilizing high performance databases, clients can be sure that the backend and API for handling the services are robust and secure. For mobile application development, they utilize the latest programming language trends such as Kotlin for Android and Swift for iOS to ensure clients receive the best app experience. Paired with CASoft Seattle’s UX/UI designers to optimize mobile-friendly business web pages, increasing quality traffic/ongoing support and minimizing application issues/server downtime, the combination is a winning solution.

The company’s SEO services start by analyzing the competition and then crafting an organic or PPC campaign with the intent of increasing ROI for the client. Their website also provides a free SEO checker, which can be used to provide a basic overview of current search engine visibility.

Summary

CASoft-Seattle
CASoft Seattle
  • Starting Price
    • $50 - $99 / hr
  • Address
    11335 NE 122nd Way Suite 105, Kirkland, WA 98034
  • Number of Employees
    2 - 9
  • Phone Number
    425-292-1578
  • Service Lines
    Custom Software Development
    Search Engine Optimization
    Web Development
Industry Focus
  • Entertainment
  • Information Technology
Jetstream-Software
Jetstream Software
  • Construction
  • Entertainment
  • Information Technology
From defining requirements, writing custom software code, and designing UX/UI to testing and deploying products, Jetstream professionals can assist clients through every step of the project. Each developer at Jetstream is an expert in his/her niche, be it software testing, developing VR applications, or writing cohesive code on Python/Ruby. The company’s offside development offers several advantages, such as lower equipment and operation costs, increased staffing flexibility, and quicker project ramp-up.

Jetstream Software participated in the development of the .NET platform, giving the firm a leg up when it comes to building .NET-based technologies.

Summary

Jetstream-Software
Jetstream Software
  • Starting Price
    • $25 - $49/hr
  • Address
    218 Main St, #438 Kirkland,, Seattle, Washington WA 98033
  • Number of Employees
    10 - 49
  • Phone Number
    425-827-9273
  • Service Lines
    Testing Services
    IT Services
    Custom Software Development
Industry Focus
  • Construction
  • Entertainment
  • Information Technology
Lunarbyte
Lunarbyte.io
  • Business services
  • Advertising & marketing
  • Real estate
Comprising a group of passionate and driven Seattle based developers, Lunarbyte.io has partnered with start-ups, marketing agencies, and enterprises across the globe to build and launch successful digital projects. Its areas of expertise include developing web and SaaS applications, using client-side technologies and cloud infrastructure, crafting beautiful iOS/Android and cross-platform applications using the newest SDKs, setting up cloud infrastructure and migrating data to cloud services, and integrating SaaS and APIs to streamline business processes. Front-end and server-side technicians work in tandem to tackle and deliver projects on time. The firm’s small workforce makes it ideal for smaller businesses.

Summary

Lunarbyte
Lunarbyte.io
  • Starting Price
    • $100 - $149 / hr
  • Address
    11300 3rd ave Seattle, WA 98125
  • Number of Employees
    2 - 9
  • Phone Number
    No Number
  • Service Lines
    Web Development
    Custom Software Development
    Mobile App Development
Industry Focus
  • Business services
  • Advertising & marketing
  • Real estate
Mobcoder
MobCoder
  • Designing
  • Information Technology
  • Augmented Reality
A mobile application development company in Seattle, MobCoder caters to start-ups and leading app publishers alike. Every developer at MobCoder is handpicked based on expertise in his or her respective niche, which makes for a highly efficient development team. On the front end, Agile methodology is applied when approaching projects, including DevOps, analysis, prototyping, QA testing, and constant support. MobCoder has extensive experience in Android/iOS/cross-platform development, UI/UX design, Node.js, IoT app development, game development, augmented reality, blockchain, Ruby on Rails, iBeacon, and more. From developing on Xamarin to creating innovative UI with Adobe Illustrator, MobCoder has a can-do attitude that keeps customers loyal.

Summary

Mobcoder
MobCoder
  • Starting Price
    • $50 - $99 / hr
  • Address
    PO Box 28922, Seattle, Washington 98118
  • Number of Employees
    50 - 249
  • Phone Number
    206-295-9310
  • Service Lines
    Mobile App Development
    Web Development
    Custom Software Development
Industry Focus
  • Designing
  • Information Technology
  • Augmented Reality
New-Relic
New Relic
  • Media
  • Financial Services
  • Other Industries
New Relic’s observability platform helps clients gather telemetry data into a single place, delivering full-stack observability and power AI-driven insights, which improves service reliability and reduces time to market. In addition, the firm provides DevOps services, cloud adoption, cloud native, and digital customer experience services. DevOps helps clients deliver software more efficiently by reducing complexity of management and reaching problem resolutions faster. It utilizes cloud computing platforms and virtualization platforms — such as VMware, Microsoft Azure, and OpenStack — to facilitate software development and allocate resources more efficiently.

An international firm, New Relic also operates in Japan, Korea, France, and Germany.

Summary

New-Relic
New Relic
  • Starting Price
    • $50 - $99/hr
  • Address
    2101 4th Ave., Seattle, Washington WA 98121
  • Number of Employees
    250 - 999
  • Phone Number
    No Seattle
  • Service Lines
    eCommerce Development
    Mobile App Development
    Custom Software Development
Industry Focus
  • Media
  • Financial Services
  • Other Industries
Northwest-Independent-Ruby-Development
Northwest Independent Ruby Development
  • Education
  • Travel and Leisure
  • Consumer Products & Services
Northwest Independent (NIRD) is a team of experienced code writers that engages with clients to create custom software, websites, and web applications that benefit small start-ups and large businesses alike. The firm has extensive knowledge in AngularJS, Chef, and Ruby. NIRD uses Ruby on Rails, an open-source web application framework based on the Ruby programming language. NIRD describes itself as a full-stack Ruby development consultancy, and it specializes in providing innovative solutions in UX/UI; development for digital platforms including web, mobile, and video; and consulting for start-ups.

Because of its focus on Ruby development, NIRD is one of the only custom software companies in Seattle that has extensive knowledge about the framework.

Summary

Northwest-Independent-Ruby-Development
Northwest Independent Ruby Development
  • Starting Price
    • $150 - $199 / hr
  • Address
    1517 12th ave #201 Seattle, WA 98122
  • Number of Employees
    2 - 9
  • Phone Number
    No Number
  • Service Lines
    Custom Software Development
    Web Development
Industry Focus
  • Education
  • Travel and Leisure
  • Consumer Products & Services
OpenmarketNewLogo
OpenMarket
  • Hospitality and Leisure
  • Consumer Products and Services
  • Healthcare & Medical
OpenMarket is an Amdocs subsidiary team of mobile messaging application services, which specializes in developing custom software solutions for various clients, including start-ups and small businesses in Seattle. It has assisted clients with creating custom SMS, MMS, and RCS API’s as well as design messaging campaigns with OpenMarket’s Mobile Engagement Platform.

The company has 19 years of experience creating thousands of mobile campaigns, with 24/7 technical live support spanning all time zones, and adheres to the highest security and privacy standards, such as ISO 27001. Businesses can use OpenMarket’s Indigo platform to facilitate acquisition and provisioning of new originators, with no experience in mobile messaging or tech expertise needed.

Summary

OpenmarketNewLogo
OpenMarket
  • Starting Price
    • $25 - $49/hr
  • Address
    2211 Elliott Avenue Suite 400,, Seattle, Washington WA 98121
  • Number of Employees
    250 - 999
  • Phone Number
    877-412-6189
  • Service Lines
    Custom Software Development
    IT Services
    Mobile App Development
Industry Focus
  • Hospitality and Leisure
  • Consumer Products and Services
  • Healthcare & Medical
Pacific-Software-Publishing
Pacific Software Publishing
  • Education
  • Business Services
  • Consumer Products & Services
Each business has a unique set of proposals, which requires unique software. Pacific Software Publishing (PSPinc) is dedicated to creating custom web applications, mobile applications, and system software for start-ups and enterprises across Seattle. PSPinc uses in-house SaaS solutions such as Parcom — an email and web platform for no-frills hosting — to leverage business growth. Expert UI/UX designers create responsive web pages and logos, which helps set clients apart from one another. The firm’s R&D team tests and explores new technology options, helping PSPinc build innovative software without needing to outsource any of its work overseas.

Summary

Pacific-Software-Publishing
Pacific Software Publishing
  • Starting Price
    • < $25/hr
  • Address
    1404 140th Place NE, Bellevue, WA 98007, US
  • Number of Employees
    10 - 49
  • Phone Number
    No Seattle
  • Service Lines
    Web Development
    Custom Software Development
    Social Media Marketing
Industry Focus
  • Education
  • Business Services
  • Consumer Products & Services
Projekt202
projekt202
  • Financial Services
  • Consumer Products & Services
  • Business Services
With experience-driven transformational strategies, projekt202 has helped and continues to help small developing businesses and large corporations with all of their software development needs. The company uses a blended teams strategy, so technologists, designers, strategists, and markets work together to deliver fast responses to clients.

Projekt202 services includes UX/UI design, front- and back-end development, and software development using DevOps, Ccoud, and NoSQL. The firm also provides campaign and digital advertising services to any prospecting business wishing to reach a larger audience.

A subsidiary of Amdocs, projekt202 has additional offices in Atlanta, Austin, Chicago, Dallas, and San Francisco. Three Asia-Pacific offices can be found in Manila, Kuala Lumpur, and Tokyo.

Summary

Projekt202
projekt202
  • Starting Price
    • $50 - $99/hr
  • Address
    999 3rd Ave Suite 1501, Seattle, WA 98104
  • Number of Employees
    250 - 999
  • Phone Number
    206-602-6999
  • Service Lines
    Custom Software Development
    UX/UI Design
    Web Development
Industry Focus
  • Financial Services
  • Consumer Products & Services
  • Business Services
Seattle-Software-Developers
Seattle Software Developers
  • Arts, entertainment & music
  • Information technology
  • Media
Based in the city it’s named for, Seattle Software Developers (SSD) provides custom software development services to any size business. With 27 years of experience and 907 projects completed, it retains its status as one of the most prominent software development companies in Seattle. Clients come to SSD for a variety of reasons, such as for system integrations, custom dashboards, booking platforms, software consultancy, or CRM systems.

The first major contract of the company was with Steve Jobs, whom SSD helped create the software that ran Cube, the base of iOS today.

The firm has offices in London, Bellevue, Rome, and Augsburg.

Summary

Seattle-Software-Developers
Seattle Software Developers
  • Starting Price
    • $100 - $149 / hr
  • Address
    4-102nd ave NE, Bellevue, Seattle, Washington 98004
  • Number of Employees
    10 - 49
  • Phone Number
    425-256-2815
  • Service Lines
    Web Development
    Custom Software Development
    Mobile App Development
Industry Focus
  • Arts, entertainment & music
  • Information technology
  • Media
Swecker
SWECKER
  • Information technology
  • Advertising & marketing
Since 2003, Swecker has delivered digital marketing solutions through creative innovations of its main service areas to start-ups and large firms alike. Areas of expertise include mobile application development, WordPress and Drupal CMS development, custom software development, digital UX/UI design, and artificial intelligence.

It bolsters its portfolio with a variety of projects for clients, such as a new website for Mackie, a world-famous professional sound equipment manufacturer. Swecker blends responsive design with CMS technology to enable effective content control. The firm has also worked closely with Farmers Life Insurance to develop annual interactive CD software that’s compatible with PC/Mac.

Summary

  • Starting Price
    • $100 - $149 / hr
  • Address
    506 2nd Ave, Suite 1400 Seattle, WA 98104
  • Number of Employees
    2 - 9
  • Phone Number
    855-367-7632
  • Service Lines
    Web Development
    Web Design
    Custom Software Development
Industry Focus
  • Information technology
  • Advertising & marketing
TECLA
TECLA
  • Other Industries
  • Information Technology
  • Marketing & Advertising
TECLA is a recognizable name in the custom software development world, known as a hiring marketplace for remote candidates across the Americas. It handles clients’ requests for interviewing and hiring top software developers, product designers, and QA analysts around the globe. Unlike traditional offshoring operations, TECLA promises to select only experienced talent from over 13,000 top professionals, not unqualified freelancers.

With talented software engineers and architects proficient in web and mobile design and experienced in Ruby, Node, React, Angular, iOS, Android, and Python, TECLA is trusted by Seattle start-ups and larger firms alike.

Summary

  • Starting Price
    • $25 - $49 / hr
  • Address
    500 Yale Ave N Seattle, WA 98109
  • Number of Employees
    10 - 49
  • Phone Number
    No Number
  • Service Lines
    Custom Software Development
    Web Development
    IT Staff Augmentation
Industry Focus
  • Other Industries
  • Information Technology
  • Marketing & Advertising

How We Chose the Best Custom Software Development Companies in Seattle

Seattle is one of the fastest growing tech hubs in the United States, making it home to many software development companies. Each firm flaunts its own features and services, but businesses don’t always have the luxury of time to select the best one. We’ve sampled a large variety of software development companies in Seattle based on objective criteria, and we’ve ensured your small business can stand to gain something from one or more of these companies.

Multiple Service Lines

Goals and objectives vary by business, and it’s important to choose a software development company that can help your business achieve them. Our method of selection included choosing firms that offer a multitude of service lines, such as custom software development, UX/UI design, and mobile app development. No matter whether your website needs a new and improved design or your businesses’ operations rely on specific software, there’s a development company that can cater to your needs.

Size of Firm

Both small and large software development companies come with their own advantages and disadvantages. The number of employees can affect response time, service line variety, and more. We’ve made sure to select a diverse range of company sizes, because we understand that some small businesses require the manpower and influence of larger firms, while others don’t.

Industry Focus

Most small businesses operate within a single industry because of size and budget constraints. The companies we’ve chosen specialize in a variety of industries, such as e-commerce, legal, or media. So if you’re a Seattle based business thinking of launching a new e-commerce website but don’t quite know the ins and outs of developing a website, our list of the best custom software development companies can help you make the right choice.

Questions to Ask Custom Software Development Companies

With so many custom software development companies in Seattle each offering similar features, it’s important to ask the right questions during your initial discovery call or demo. To help you make the right inquiries, we put together a downloadable list of questions to ask your prospective custom software developers.

Download the questions to ask custom software developers