Top 100 IT Services Companies in Seattle
The Best of July 2026Looking 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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151Undisclosed10 - 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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152Undisclosed50 - 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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153Undisclosed1,000 - 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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154Undisclosed1,000 - 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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155Undisclosed50 - 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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156Undisclosed10 - 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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157Undisclosed50 - 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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158Undisclosed1,000 - 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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159Undisclosed2 - 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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160Undisclosed2 - 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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161Undisclosed1,000 - 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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162Undisclosed10 - 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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163Undisclosed250 - 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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164Undisclosed1,000 - 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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165Undisclosed250 - 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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166Undisclosed10 - 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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167Undisclosed50 - 249 employeesSeattle, WACloud consulting & SI company Yenlo was established in 2007. The firm specializes in cloud consulting & SI and Cybersecurity.Read More
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168Undisclosed250 - 999 employeesSeattle, WAFounded in 2007, ExtraHop is a Cybersecurity company. The team offers Cybersecurity and IT strategy consulting.Read More
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169Undisclosed50 - 249 employeesSeattle, WADomainTools is a Cybersecurity company. The Seattle, Washington-based company was founded in 2004. Their services include Cybersecurity.Read More
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170Undisclosed50 - 249 employeesBellevue, WARight! Systems, Inc. Is a Cybersecurity and IT managed services company founded in 1993. The midsize team offers Cybersecurity and IT managed services.Read More
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171Undisclosed10 - 49 employeesSeattle, WADigitSec, Inc., a Cybersecurity company, was founded in 2017. The firm offers Cybersecurity and Compliance Consulting.Read More
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172Undisclosed10 - 49 employeesSeattle, WABlueArch is a Cybersecurity company. The company is based in Seattle, Washington. Their services include Cybersecurity and cloud consulting & SI.Read More
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173Undisclosed50 - 249 employeesSeattle, WAMidsize Cybersecurity company Envorso, is headquartered in Seattle, Washington and Detroit, Michigan. The team focuses on Cybersecurity and Custom Software Development.Read More
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174Undisclosed250 - 999 employeesKent, WAFounded in 1974, Kelley Create is a Cybersecurity company. The midsize team focuses on Cybersecurity and IT strategy consulting.Read More
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175Undisclosed50 - 249 employeesSeattle, WABased in Seattle, Washington and Spokane, Washington, Cerium Networks is an unified communications consulting & SI company. The team provides unified communications consulting & SI and Cybersecurity.Read More
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176Undisclosed10 - 49 employeesSeattle, WASentry Computing, a Cybersecurity company, was launched in 2008. The small team specializes in Cybersecurity and IT managed services.Read More
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177Undisclosed50 - 249 employeesSeattle, WALeviathan Security Group, a Cybersecurity company, focuses on Cybersecurity. The firm is headquartered in Seattle, Washington.Read More
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178Undisclosed2 - 9 employeesSeattle, WAZen Techworks, Inc is a Cybersecurity company. They are located in Seattle, Washington and have small team of experts. Their services include Cybersecurity and IT strategy consulting.Read More
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179Undisclosed2 - 9 employeesSeattle, WASalmon Bay Technology, a Cybersecurity company, offers Cybersecurity and IT managed services. The firm is in Seattle, Washington.Read More
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180Undisclosed2 - 9 employeesSeattle, WAEstablished in 2001, Vital Information Technology is a Cybersecurity company. The team offers Cybersecurity and IT managed services.Read More
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