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Top Tech Companies in Seattle, WA (3,348)

Riot (tryriot.com)
Information Technology • Cybersecurity
22 Offices
105 Employees
43 Benefits

In today's world, most successful cyberattacks start by a human failure. We're making the platform that makes it easy to prepare your employees for cyberattacks, in a way they love.

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Riot (tryriot.com)
Harebrained Schemes
Kirkland
44 Employees

Harebrained Schemes is an independent studio of passionate game makers, led by Jordan Weisman and Mitch Gitelman, long time veterans of tabletop and video game development.

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Harebrained Schemes
Luum
Cloud • Transportation
Seattle
19 Employees
7 Benefits

Luum is a cloud based software solution with both mobile and web-based interfaces that integrates with parking, security, payroll and hr systems. We provide a holistic approach to parking and commuter management to allow employers to identify and implement incentive programs that motivate lasting commuter behavioral change.

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Luum
Tasso Inc
Biotech
Seattle
103 Employees
26 Benefits

Tasso is a fast-growing Seattle-based startup focused on delivering at-home diagnostic testing to those who need it most. We are growing our footprint with leading health systems, clinical research organizations, academic medical centers, and more who are looking to deliver clinical-grade, convenient diagnostic tests to their patients. Tasso was originally founded to find a better way to collect blood instead...

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Tasso Inc
Rocket Software
Information Technology • Software
47 Offices
2,825 Employees
17 Benefits Hiring Now

Rocket Software empowers organizations to create legendary impact in the world through innovation in legacy technologies. With deep expertise in IBM Z, IBM Power, and database and connectivity solutions, Rocket solutions power tens of thousands of global businesses, solving real problems and making real-world impact. With more than 70% of the world’s IT workload running on legacy platforms, Rocket helps companies...

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Rocket Software

Rocket Software's Top Stability & Growth Strengths

Strong Market Position & Advantage: Rocket is positioned as one of the biggest and most influential players in mainframe/host-based modernization, reinforced by the May 2024 AMC acquisition that expanded its portfolio and customer count beyond 12,500. Analyst characterizations (e.g., IDC and Futurum commentary quoted in the provided text) frame the combined company as among the largest in mainframe modernization and connectivity.

Market Expansion: The company’s footprint is expanding through large acquisitions, including the closed AMC deal (May 2024) and the announced Vertica acquisition (February 2026) to broaden into high-performance analytics and AI workloads. This expands Rocket’s addressable use cases from modernization/connectivity into analytics-driven modernization narratives.

Product Line Growth: The portfolio broadened materially with AMC assets (COBOL/PL-I tooling, host connectivity, Enterprise Suite, Uniface), complementing existing IBM Z/IBM i products and supporting 'modernize in place' and hybrid strategies. Additional platform mentions (e.g., workload automation positioning and DataEdge visibility) indicate continued line extension into orchestration and data integration adjacent to its core.

ISOutsource
Information Technology • Consulting
4 Offices
94 Employees
27 Benefits

ISOutsource is a one-stop IT consulting and support solutions provider. Our mission is to provide outsourced technology support and consulting services that leave you feeling happy, productive and supported. As one of our valued clients, you will experience highest standards of professionalism and customer service. Formed in 1992, we have over 30 years of experience in assisting businesses to maximize the...

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ISOutsource
Havium
Fintech • Real Estate • PropTech
Seattle
10 Employees
Passive Real Estate Investing, Perfected.

Havium is an end-to-end real estate platform built with the mission to create the easiest, safest, most profitable, and most enjoyable way for anyone to invest in and own single family rentals (SFRs). Why? Because SFRs are one of the best long-term investments possible if they’re done right. And we’re experts in how to do them right. Our proprietary technology...

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Havium
NuID
Security
Seattle
6 Employees

Trustless Authentication | Trusted Identity

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NuID
Mercer Advisors
Financial Services
28 Offices
608 Employees
25 Benefits Hiring Now

Established in 1985, Mercer Advisors is a total wealth management firm dedicated to providing clients with financial clarity, investment insight, and long-term collaborative partnerships. Our comprehensive suite of services includes financial planning, investment management, asset protection and risk management, estate, tax, and legacy planning, retirement plan design and administration, and family wealth office services. These services are delivered holistically, rooted...

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Mercer Advisors

Mercer Advisors's Top Stability & Growth Strengths

Strong Market Position & Advantage: Industry rankings (e.g., Barron’s Top 100 RIAs) repeatedly place the firm at or near the top, and national lists cite broad excellence across size, growth, and infrastructure. Trade coverage and filings‑based aggregators also describe it among the largest wealth‑focused RIAs, reinforcing competitive standing.

Market Expansion: Active M&A and new office openings extend the national footprint and capabilities, with numerous deals announced through 2025–2026 across multiple regions. Coverage notes the firm surpassed 100 acquisitions since 2016 and continues adding assets, teams, and geography.

Investor Backing & Capital Strength: Sponsorship from established investors is cited as supporting the firm’s scale and acquisition strategy. Public materials reference multiple sponsors that have historically backed continued expansion.

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Stratos Genomics
Healthtech
Seattle
53 Employees

ULTRA-LOW-COST GENOME SEQUENCING Stratos Genomics'​ goal is to establish the next gold standard of DNA sequencing with its “Sequencing by Expansion™” (SBX) method. SBX is a simple, elegant, single-molecule detection process that circumvents the limitations of competing technologies, allowing accurate, ultra-low-cost whole genome sequencing.

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Stratos Genomics
Rushing Company
Professional Services • Real Estate • Transportation • Energy
Seattle
80 Employees
20 Benefits
Rushing is a Seattle-based engineering and sustainability consulting firm.

Rushing is a multidisciplinary firm focused on MEP engineering, energy analysis, sustainability consulting, commissioning, and lighting design services. Founded as a new model for consulting engineering, we come to work every day to generate holistic designs that support and enhance the visions of our clients.

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Rushing Company
Boxoh
Software
Seattle
2 Employees

Boxoh.com is a universal package tracking website that has a simple web interface. On the back-end, it powers package information systems for hundreds of users, from personal hobbyists to Fortune 500 companies. As a company, Boxoh also develops and hosts a suite of other single-serving and utility sites which in total serve over 17 million pages per month. Boxoh also...

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Boxoh
Assemble
Information Technology • Professional Services
3 Offices
130 Employees

Assemble is a parent company formed through the merger of Board.org and Executive Platforms. It operates a peer intelligence platform designed to serve business leaders by providing access to trusted sources, industry insights, and professional networking opportunities. The company facilitates knowledge sharing and organizational growth across various sectors, including finance, human capital, manufacturing, and marketing, helping leaders navigate a changing...

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Assemble
Labelmaster
Logistics • Transportation
3 Offices
192 Employees
21 Benefits

For more than five decades, Labelmaster has been the go-to source for companies – big and small – to navigate and comply with the complex, ever-changing regulations that govern dangerous goods and hazardous materials. From hazmat labels and UN certified packaging, hazmat placards and regulatory publications, to advanced technology and regulatory training, Labelmaster’s comprehensive offering of industry-leading software, products, and...

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Labelmaster
American Heart Association | American Stroke Association
25 Offices
8,397 Employees
4 Benefits

Our mission : To be a relentless force for a world of longer, healthier lives. As the nation's oldest and largest voluntary health organization. Our purpose is to help Americans live heart healthy and prevent America's No. 1 and No. 5 killers, heart disease and stroke. We are advocates of good health and promoters of positive behaviors, nutritious eating habits and healthy...

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American Heart Association | American Stroke Association
Norfolk Southern Corporation
21 Offices
10,001 Employees
32 Benefits

Norfolk Southern Corporation (NYSE: NSC) is one of the nation’s premier transportation companies. Its Norfolk Southern Railway Company subsidiary operates approximately 19,500 route miles in 22 states and the District of Columbia, serves every major container port in the eastern United States, and provides efficient connections to other rail carriers. Norfolk Southern operates the most extensive intermodal network in the...

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Norfolk Southern Corporation
Ario
Mobile
Seattle
17 Employees

Ario creates lighting technology that makes it easy for people to lead healthier lives. Ario's flagship product, the Ario lamp, is the world's only healthy lighting system that programs itself to adjust light direction, color, and intensity throughout the day to support your body's natural hormone production and circadian rhythm.

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Ario
BIZX
Other
Bellevue
79 Employees

BIZX owns and operates consumer and business focused websites ranging in subject matter.

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BIZX
Steve & Kate's Camp
Edtech • Kids + Family • Hospitality
19 Offices
111 Employees
18 Benefits

Steve & Kate's Camp provides educational camping services where children create their own experiences through a variety of activities, fostering confidence and creativity. They offer summer, winter, and spring camps as a fun and educational option for working parents.

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Steve & Kate's Camp
Giving Compass
Consumer Web
Seattle
12 Employees

Giving with impact can be difficult. There is a sea of research online, and so many causes to address. It can be frustrating and time-consuming to find the right information to make effective giving decisions. we organize the world’s information to make it easier to give well.

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Giving Compass

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