Top 100 IT Services Companies in Seattle
The Best of December 2025Looking for a top IT services company in Seattle?
IT services set the pace of how fast your company will scale. With a good IT infrastructure in place, you can save time and resources, secure your data and assets, and improve your customer service. It may seem costly at first glance, but the ROI is more than worth it.
Get in touch with Seattle’s leading IT services companies on The Manifest. Cut through the options as you browse through these service providers’ client reviews, awards, and profiles.
List of the Best Seattle IT Companies
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$10,000+50 - 249 employeesL'viv, UkraineRead More
Founded in 2019, Uinno is an artificial intelligence firm. The midsize team specializes in Artificial Intelligence, Custom Software Development, Low/No Code Development, UX/UI Design, and more. The company is based in L'viv, Ukraine; Tallinn, Estonia; Kingston upon Thames, England and Zaporizhzhia, Ukraine.
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$1,000+50 - 249 employeesNaperville, ILRead More
BetterWorld Technology is a midsize IT managed services company launched in 2003. Their services include IT managed services, Cybersecurity, IT strategy consulting, and Compliance Consulting. The company is headquartered in Naperville, Illinois; Naperville, Illinois; Winter Park, Florida and Denver, Colorado.
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121Undisclosed250 - 999 employeesSeattle, WAPremise is an IT strategy consulting company. Launched in 2012, the firm provides IT strategy consulting and Artificial Intelligence.Read More
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122Undisclosed250 - 999 employeesBellevue, WAEstablished in 1996, Launch Consulting is a midsize Bellevue, Washington-based IT strategy consulting company. Their services include IT strategy consulting and UX/UI Design.Read More
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123Undisclosed2 - 9 employeesSeattle, WAPercolator Consulting is a CRM consulting and SI company. The Seattle, Washington-based firm offers CRM consulting and SI.Read More
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124Undisclosed10 - 49 employeesSeattle, WAESage Group is a CRM consulting and SI company. The small Seattle, Washington-based team offers CRM consulting and SI. The firm was launched in 1998.Read More
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125Undisclosed10 - 49 employeesSeattle, WAEnterprise Data Management, a small ECM consulting and SI company, is located in Vancouver, Canada and Seattle, Washington. The team specializes in ECM consulting and SI and IT managed services.Read More
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126Undisclosed10 - 49 employeesSeattle, WAOTB Solutions is an ECM consulting and SI company established in 2002. The agency specializes in ECM consulting and SI and IT strategy consulting, and is small.Read More
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127Undisclosed10 - 49 employeesKirkland, WALaunched in 2011, EightCloud is a CRM consulting and SI company. The team provides CRM consulting and SI and IT managed services and is located in Kirkland, Washington.Read More
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128Undisclosed10 - 49 employeesRedmond, WAVTeamLabs LLC, a cloud consulting & SI company, was launched in 2014. The agency specializes in cloud consulting & SI and Artificial Intelligence.Read More
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129Undisclosed250 - 999 employeesBellevue, WABased in Bellevue, Washington and Buenos Aires, Argentina, Kopius, Inc. Is an IT managed services company. The team focuses on IT managed services and Web Development.Read More
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130Undisclosed10 - 49 employeesSeattle, WAStepfar Technology Group is a Cybersecurity and IT managed services company. They are based in Seattle, Washington and have small team. They offer Cybersecurity and IT managed services.Read More
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131Undisclosed250 - 999 employeesSeattle, WAValorem Reply is a data analytics company launched in 2009. Their team specializes in BI & big data consulting & SI and cloud consulting & SI.Read More
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132Undisclosed10 - 49 employeesSeattle, WAEstablished in 1996, StratusG LLC is a CRM consulting and SI company. Their team offers CRM consulting and SI.Read More
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133Undisclosed10 - 49 employeesBellevue, WAAzure One is a Bellevue, Washington-based IT strategy consulting company. They provide IT strategy consulting and cloud consulting & SI.Read More
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134Undisclosed10 - 49 employeesSeattle, WACRM consulting and SI company Etumos was launched in 2014. The team provides CRM consulting and SI and is based in Seattle, Washington.Read More
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135Undisclosed10 - 49 employeesSeattle, WAEstablished in 2011, Cloudticity is a cloud consulting & SI company. The firm specializes in cloud consulting & SI and Compliance Consulting.Read More
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136Undisclosed50 - 249 employeesBellevue, WABased in Bellevue, Washington, RedCloud Consulting is a Market Research company. The team specializes in Market Research and Marketing Strategy.Read More
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137Undisclosed1,000 - 9,999 employeesKirkland, WAAllegis Global Solutions is an IT managed services and Recruitment Process Outsourcing company established in 2001. The team specializes in IT managed services and Recruitment Process Outsourcing.Read More
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138Undisclosed1,000 - 9,999 employeesSeattle, WACloud consulting & SI company F5 was established in 1996. The team specializes in cloud consulting & SI and Custom Software Development and is in Seattle, Washington and Billerica, Massachusetts.Read More
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139Undisclosed50 - 249 employeesRedmond, WAData Science Dojo is a midsize Redmond, Washington-based data analytics company. Their services include BI & big data consulting & SI and Generative AI.Read More
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140Undisclosed10 - 49 employeesBellevue, WATecplot, Inc. Is a business intelligence company launched in 1981. The firm provides BI & big data consulting & SI, and is small.Read More
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141Undisclosed50 - 249 employeesSammamish, WADatadigm, a midsize custom software development firm, is located in Sammamish, Washington. The team specializes in Custom Software Development and IT strategy consulting.Read More
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142Undisclosed1,000 - 9,999 employeesRedmond, WAQuadrant Technologies, a big data analytics company, offer BI & big data consulting & SI and Business Consulting. They were launched in 2004.Read More
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143Undisclosed2 - 9 employeesBothell, WAArham, LLC is a big data analytics company. They specialize in BI & big data consulting & SI and are located in Bothell, Washington.Read More
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144Undisclosed2 - 9 employeesKirkland, WAStrategic Privacy Alliance is a Kirkland, Washington-based IT strategy consulting company. They provide IT strategy consulting and cloud consulting & SI.Read More
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145Undisclosed1,000 - 9,999 employeesKirkland, WATanium is a big data company. Their team is located in Kirkland, Washington and Downers Grove, Illinois and specializes in BI & big data consulting & SI and Cybersecurity.Read More
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146Undisclosed10 - 49 employeesSeattle, WAMirai Security Inc. Is a Cybersecurity company. Established in 2017, the firm is located in Seattle, Washington and Vancouver, Canada. Their services include Cybersecurity and cloud consulting & SI.Read More
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147Undisclosed250 - 999 employeesBellevue, WAC2S Technologies, Inc. Is an IT strategy consulting company. Founded in 2005, the firm offers IT strategy consulting and BI & big data consulting & SI.Read More
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148Undisclosed1,000 - 9,999 employeesSeattle, WAWatchGuard Technologies is a Cybersecurity company. The firm is based in Seattle, Washington. Their services include Cybersecurity and IT managed services.Read More
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149Undisclosed250 - 999 employeesSeattle, WABig data analytics company Factspan is based in London, England and Seattle, Washington. Founded in 2012, the team offers BI & big data consulting & SI and cloud consulting & SI.Read More
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150Undisclosed10 - 49 employeesTukwila, WALaunched in 2010, Hostwinds is a cloud consulting & SI and IT managed services company. The team specializes in cloud consulting & SI and IT managed services and is based in Tukwila, Washington.Read More
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