Top 100 Software Development Companies in Bellevue

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Top 100 Software Development Companies in Bellevue

December 2023
Investing in a cutting-edge software solution that’s tailored to help you improve your operations and business-related matters can positively impact your bottom line. Productivity is the key, and custom solutions cut down time, reduce repetitive tasks, and streamline processes, giving more room for business growth. 

List of the Best Bellevue Software Developers

  • 1
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $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

    Notable Project

    A fundraising company was looking to improve their online presence, so they engaged with Bilberrry to provide them with WordPress web development, design, branding, and ongoing maintenance and hosting.

    "I highly recommend employing their services because Bilberrry is relatable and easy to work with."

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  • 2
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $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

    Notable Project

    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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  • 3
    • $25,000+
    • 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

    Notable Project

    Flower Press Creative Studio, LLC provides design and development services for an insurance brokerage. The team has worked on the client’s branding needs and currently maintains their e-commerce platform. 

    “They’ve done excellent work.”

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  • 4
    • Scheduling

      4.7
    • Quality

      4.9
    • Cost

      4.2
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • Seattle, WA

    Founded in 2000, UpTop specializes in UI/UX design but also shines in web and mobile app development. Their team of 50+ are passionate about solving complex problems and increasing revenue for their clients.

    Clients

    • Amazon
    • Microsoft
    • CenturyLink
    • F5

    Industries

    Notable Project

    UpTop redesigned the UX/UI of a digital services company’s website, creating layouts that better met user persona needs. They created templates that standardized the overall visuals and wrote usage guidelines.

    “It’s important to note how much our team universally accepted UpTop’s work.”

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  • 5
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 10 - 49 employees
    • Seattle, WA
    ATOMICUS, a custom software development firm, was launched in 1999. They are in Seattle, Washington and Gdańsk, Poland and have a small team. Their services include custom software development.

    Clients

    • Bruker
    • Cameca
    • Ametek
    • Rigaku

    Industries

    Notable Project

    ATOMICUS provided software development support for an IT recruitment company. They provided three developers with high expertise in .NET, C#, WPF, and C++.

    "ATOMICUS proved themselves to be a reliable partner."

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  • 6
    • $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

    Notable Project

    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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  • 7
    • Scheduling

      4.6
    • Quality

      4.8
    • Cost

      4.3
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 250 - 999 employees
    • Kirkland, WA

    Skelia is an IT company that was founded in 2008. Headquartered in Luxembourg, they have service centers in Poland, Ukraine and offices in the U.S., the U.K., and the Netherlands. They are made up of 350 employees and specialize in IT and engineering staff augmentation and building affiliate companies in eastern Europe. They also provide on-demand mobile development, software testing, and RPA services for businesses of all sizes.

    Clients

    • SiteCore
    • GS1
    • Valo Intranet
    • Televic

    Industries

    Notable Project

    pbteams helps a wellness and fitness coaching firm build and maintain their Node.js backend and React frontend. They manage the entire DevOps, leverage Kubernetes and CloudAMQP, and test the platform.

    "Even though the team works remotely, it feels like a very close team with a great connection to our company."

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  • 8
    • $25,000+
    • 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

    Notable Project

    Black Antelope was hired by an academic research institute to develop their brand identity, redesign their site, and migrate it to WordPress. This involved implementing new interactive features into the site.

    "We could not be happier with the final product — it looks sleek and professional."

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  • 9
    • $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

    Notable Project

    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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  • 10
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $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

    Notable Project

    Slashdev has provided a senior Flutter developer to augment a software development company's internal team.

    "We knew what we wanted, and they delivered quickly."

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  • 11
    • $5,000+
    • 250 - 999 employees
    • Bellevue, WA

    Affirma Consulting is a full-service technology consulting agency. Founded in 2001, Affirma Consulting is based in Seattle, WA with additional offices in Los Angeles, CA, India, Ireland, and Reno, NV. The team of 200+ focuses on consulting for Business Intelligence (BI), Sharepoint, Salesforce, and customer relationship management (CRM) software, they also offer design, marketing, and mobile and web development.

    Clients

    • Microsoft
    • ESPN
    • Boeing
    • Time

    Industries

    Notable Project

    Affirma Consulting mainly works on migrating a web application to Microsoft Azure. The agency's responsibilities include discovery, architecture, and UI design.

    "They are a very sharp operation, and we are very happy to have them as a partner."

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  • 12
    • 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

    • Vonto
    • Apiture Xpress
    • Les Mills
    • YES Network

    Notable Project

    Stellar Elements (formerly ADK Group) took on UX/UI design projects to help transition a government agency’s internal legacy solution into a streamlined web app. They conducted extensive UX/UI research.

    “I thought they performed exceptionally.”

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  • 13
    • $1,000+
    • 50 - 249 employees
    • Bellevue, WA

    Founded in 2014, Golden Eagle IT Technologies Pvt. Ltd. Is a SEO services firm. The midsize Indore, India-based team provides search engine optimization, custom software development, web design, ux/ui design, and more.

    Industries

    Notable Project

    Golden Eagle It technologies provides staff augmentation services for an IT services firm. The vendor has deployed several Ruby on Rails developers to help the client complete a specific project.

    "We’re impressed with their ability to communicate well and deliver the project on time."

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  • 14
    • 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

    Notable Project

    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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  • 15
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $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.

    Notable Project

    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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  • 16
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • 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

    Notable Project

    SB Develops provides ongoing software development for a stroller renting platform. The team provided the wireframes, developed the frontend and the UI/UIX, and applied all the client's requests.

    "Their communication and project management was excellent which sped up the development process."

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  • 17
    • $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

    Notable Project

    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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  • 18
    • $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

    Notable Project

    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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  • 19
    • Scheduling

      4.5
    • Quality

      4.7
    • Cost

      4.2
    • NPS

      4.7
    Read Full Reviews on Clutch Visit Site
    • $75,000+
    • 2 - 9 employees
    • Seattle, WA

    Lab is a product development studio based in Seattle. The studio, founded in 2015, has a team of less than ten that provides UX/UI design, product design, and custom software development services to various companies in the consumer products & services, IT, and e-commerce industries.

    Clients

    • Amazon Web Services
    • Sequoia Capital
    • Techstars
    • Chameleon

    Industries

    Notable Project

     Lab helped a SaaS startup redesign a web app. They assisted with research, design iteration, internal testing, prototyping, external testing, and development to make sure the designs would meet customer needs.

    "They’re quick in their iteration speed."

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  • 20
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.3
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $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

    Notable Project

    PYCOGroup designed and developed a government-funded mobile app to promote travel. While the internal team focused on the database and API, PYCOGroup focused on everything else, including delivery.

    "The workflow was very fluid, efficient, and professional on PYCOGroup's side."

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  • 21
    • $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

    • Google
    • Electronic Arts
    • Linkedin
    • BBVA

    Notable Project

    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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  • 22
    • $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

    Notable Project

    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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  • 23
    • $50,000+
    • 50 - 249 employees
    • Seattle, WA

    ThirstySprout is an outsourced development company headquartered in Seattle with an additional office in San Franciso. Founded in 2017, they currently have about 18 employees. They provide IT staff augmentation as well as custom software and web development services to primarily midmarket agencies in IT, e-commerce, and business services.

    Clients

    • Rover.com
    • Jirav.com
    • Zillow
    • WeWork Labs

    Industries

    Notable Project

    ThirstySprout developed automation software for a car-sharing company. The team built a data mart and a financial reporting system to analyze the company's data.

    "They go above and beyond to provide great customer service and project delivery."

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  • 24
    • $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

    Notable Project

    Helpful Human helps a fintech company with market testing for their products and solutions. Their work includes ad copies, landing page tests, product concepts, design sprints, and software development.

    “The quality of people that Helpful Human has on their staff is very high.”

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  • 25

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    • Undisclosed
    • 50 - 249 employees
    • Issaquah, WA

    FluentPro Software Corporation is a midsize big data company. Launched in 2009, the company is headquartered in Redmond, Washington. Their team provides BI & big data consulting & SI, IT managed services, and IT strategy consulting.

    Industries

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  • 26
    • $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.

    Industries

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  • 27
    • $100,000+
    • 50 - 249 employees
    • Seattle, WA
    Carbon Five is a software development firm. Established in 2000, the midsize company is located in San Francisco, California; Santa Monica, California; Chattanooga, Tennessee and New York, New York. Their services include custom software development, mobile app development, web development, web design, and more.

    Industries

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  • 28
    • $10,000+
    • 10 - 49 employees
    • Seattle, 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.

    Industries

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  • 29
    • $5,000+
    • 10 - 49 employees
    • Seattle, WA
    Founded in 2017, Fenyx Studio is an application development company. The firm provides mobile app development, web development, and custom software development and has a small team. The firm is in Santa Monica, California and Seattle, Washington.

    Industries

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  • 30
    • $10,000+
    • 10 - 49 employees
    • Seattle, WA
    Established in 2005, Palador is a custom software development firm. Based in Seattle, Washington and Yogyakarta, Indonesia, their small team offers custom software development, enterprise app modernization, ux/ui design, web development, and more.

    Industries

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