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Top Illinois Information Technology Companies (542)

BlackRock
Fintech • Information Technology • Financial Services
Bringing together tech and market expertise to help people build better financial futures.

As the world’s largest asset manager, BlackRock partners with investors around the globe to help them (and those on whose behalf they invest) plan for life’s most important goals – like retirement, home ownership and their children’s education. Our clients range from governments, foundations and other large institutions to those investing on behalf of individuals, including firefighters, nurses, teachers and...

BlackRock
OCC
Big Data • Cloud • Fintech • Information Technology • Financial Services
We clear and settle trades for the options industry.

As the foundation for secure markets, OCC is a customer-driven organization that delivers world-class Risk Management, Clearing, and Settlement Services for a sophisticated mix of financial products that includes standard options, stock loans, and futures contracts.

OCC
Boeing
Aerospace • Information Technology • Software • Cybersecurity • Design • Defense • Manufacturing
33 Offices
170,000 Employees
27 Benefits Hiring Now
Explore New Horizons

A leading global aerospace company and top U.S. exporter, Boeing develops, manufactures and services commercial airplanes, defense products and space systems for customers in more than 150 countries. Our U.S. and global workforce and supplier base drive innovation, economic opportunity, sustainability and community impact. Boeing is committed to fostering a culture based on our core values of safety, quality and...

Boeing
Atlassian
Cloud • Information Technology • Productivity • Security • Software • App development • Automation
Atlassian provides tools to help every team unleash their full potential.

Atlassian creates teamwork solutions for high-performing teams. Our portfolio of collaboration and work management software products includes Jira, Confluence, Trello, Loom and Rovo. More than 300,000 businesses worldwide rely on Atlassian’s technology, including 80 percent of Fortune 500 companies. Our solutions support various business teams and they help organizations plan, track, and deliver their biggest ideas together.

Atlassian
Grainger
eCommerce • Information Technology • Retail • Industrial
North America's leading B2B supplier of maintenance, repair and operating supplies and related services.

Grainger is a leading broad line distributor with operations primarily in North America and Japan. We Keep The World Working® by serving more than 4.6 million customers worldwide with products delivered through innovative technology and deep customer relationships. We’re dedicated to providing value for customers, fostering an engaging culture for team members and driving strong financial results. Our welcoming workplace...

Grainger
Zoro
eCommerce • Information Technology • Retail • Industrial
Chicago
620 Employees
82 Benefits Hiring Now
Zoro is an eCommerce company that’s on a mission to provide business owners everything they need to operate and thrive.

Our e-commerce website has everything businesses and consumers need to make their business go, at prices that make sense. We have over 14 million products on our website (and counting) to help your business run that are shipped fast and often free. Throw in our award-winning workplace culture and you’ll find Zoro an amazing place to work and grow!

Zoro
Belvedere Trading
Fintech • Information Technology • Other • Software • Financial Services • Quantitative Trading
4 Offices
265 Employees
77 Benefits Hiring Now
At Belvedere, we cultivate the best of trading by creating cutting-edge technology and forging unique paths in culture.

In March of 2002, Belvedere Trading emerged as Chicago’s newest market maker, soon to join the ranks of the Windy City’s elite proprietary trading firms. Armed with printouts of Excel workbooks and a team of eager minds, Belvedere established their place in the SPX pit on the floor of the Chicago Board Options Exchange. From the beginning, we have iteratively...

Belvedere Trading
Coupa
Artificial Intelligence • Fintech • Information Technology • Logistics • Payments • Business Intelligence • Generative AI
13 Offices
2,500 Employees
39 Benefits Hiring Now
Help Shape What's Next

Coupa is a global technology company that helps businesses run smarter by connecting all the ways they spend money — from procurement and expenses to payments and supply chain decisions — in one intelligent platform. In simple terms, Coupa gives organizations the visibility and control they need to make better financial choices, reduce waste, and drive real impact. It’s where...

Coupa
ABN AMRO Clearing USA LLC
Information Technology • Professional Services • Financial Services
Chicago
215 Employees
48 Benefits Hiring Now
Leading the Way to Safe and Transparent Markets Globally

ABN AMRO Clearing USA LLC (AAC-USA) is a subsidiary of ABN AMRO Clearing Bank N.V. We are a global clearing firm that provides an integrated suite of financial services to professional trading participants in the global financial market. The core service offering consists of clearing, execution, stock borrowing and lending, settlement. AAC-USA has a Global Reach through direct and indirect clearing...

ABN AMRO Clearing USA LLC
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Citadel Securities
Information Technology • Software • Financial Services • Quantitative Trading
We embrace bold ideas and seize opportunities others don’t, from the way we operate to the strategies we deploy.

Citadel Securities is a technology-driven, next-generation global market maker. We provide institutional and retail investors with world-class liquidity, competitive pricing and seamless front-to-back execution in a broad array of financial products. Our teams of engineers, traders and researchers harness leading-edge quantitative research and the accelerating power of compute, machine learning and AI to power our analytics and tackle the market’s...

Citadel Securities
Rundoo
Cloud • Information Technology • Internet of Things • Software
2 Offices
50 Employees
10 Benefits Hiring Now
Grow your supply store with the best technology.

Rundoo gives independent paint and hardware stores the best technology to rise above the competition, so you can win customers, streamline operations, and grow your business.

Rundoo
Pricefx
Artificial Intelligence • Cloud • Enterprise Web • Information Technology • Software • Analytics • Business Intelligence
8 Offices
450 Employees
80 Benefits Hiring Now
The World’s Leading SaaS Pricing Software Company.

"This should be easier..." Pricefx was born of a simple yet powerful idea: that building a 100% cloud-native pricing platform would be the key to unlocking exceptional profitability for customers. At the time, cloud SaaS was only emerging as a trend, though we know today that cloud SaaS software is the future of software. Our founders had a unique insight –...

Pricefx
Strata Decision Technology
Fintech • Healthtech • Information Technology • Professional Services • Software • Analytics • Consulting
2 Offices
775 Employees
66 Benefits Hiring Now
We empower organizations to fuel their missions.

Strata provides financial software, data, and insights to drive decisions and performance.

Strata Decision Technology
Vivid Seats
Consumer Web • eCommerce • Events • Information Technology • Software
Vivid Seats connects fans with the live events they love.

Founded in 2001, Vivid Seats is a leading online ticket marketplace committed to becoming the ultimate partner for connecting fans to the live events, artists, and teams they love. Based on the belief that “Life Happens Live”, the Chicago-based company provides exceptional value by providing one of the widest selections of events and tickets in North America and an industry...

Vivid Seats
iManage
Artificial Intelligence • Cloud • Information Technology • Legal Tech • Productivity • Software
8 Offices
1,100 Employees
71 Benefits Hiring Now
Whoever you are, whatever you do, however you work. Make it mean something at iManage.

iManage is dedicated to Making Knowledge Work. Over one million professionals across 65+ countries rely on our intelligent, cloud-enabled, secure knowledge work platform to uncover & activate the knowledge that exists inside their business content and communications. We are continuously innovating to solve the most complex professional challenges & enable better business outcomes. Our work is not always easy but it...

iManage
CDW
Information Technology
9 Offices
15,100 Employees
43 Benefits Hiring Now
At CDW, our purpose is to make technology work so people can do great things.

CDW Corporation is a leading multi-brand provider of information technology solutions to business, government, education and healthcare customers in the United States, the United Kingdom and Canada. A Fortune 500 company and member of the S&P 500 Index, CDW helps its customers to navigate an increasingly complex IT market and maximize return on their technology investments. For more information about...

CDW
Cloudflare
Cloud • Information Technology • Security • Software • Cybersecurity
13 Offices
4,400 Employees
67 Benefits Hiring Now
Helping Build a Better Internet

Cloudflare, Inc. (NYSE: NET) is the leading connectivity cloud company on a mission to help build a better Internet. It empowers organizations to make their employees, applications and networks faster and more secure everywhere, while reducing complexity and cost. Cloudflare’s connectivity cloud delivers the most full-featured, unified platform of cloud-native products and developer tools, so any organization can gain the...

Cloudflare
OpenX Technologies
AdTech • Enterprise Web • Information Technology • Machine Learning • Marketing Tech • Sales
4 Offices
420 Employees
55 Benefits Hiring Now
OpenX is an ad tech company that drives optimal value for advertisers through high-scale marketplaces across all screens

OpenX is The Intelligent SSP™ (supply-side platform), simplifying advertising for marketers, advertisers, and publishers worldwide. As one of the largest SSPs globally, OpenX combines the industry’s only fully cloud-based infrastructure with leading AI capabilities to make digital advertising easier and more effective across every format, including CTV. Built to responsibly deliver quality, performance, and adaptability, OpenX makes digital advertising safer,...

OpenX Technologies
Vail Systems, Inc.
Information Technology • Machine Learning • Natural Language Processing • Software • App development • Conversational AI • Big Data Analytics
2 Offices
274 Employees
66 Benefits Hiring Now

At Vail we develop innovative technology to enhance the way people communicate. Our mission is to create business value for our clients and growth opportunities for our employees by developing solutions that inspire people to interact freely and authentically.

Vail Systems, Inc.
UncommonX
Artificial Intelligence • Information Technology • Software • Analytics • Cybersecurity • Generative AI
Chicago
40 Employees
30 Benefits Hiring Now
Cybersecurity is reactive, complex, and costly. We're out to change that.

Recognized by Crain’s as one of 2025’s Most Innovative Companies, UncommonX helps customers move from reactive defense to proactive resilience, with the context, prioritization, and insights needed to reduce risk and respond with precision. We believe cybersecurity should deliver more than alerts — it should deliver clarity, confidence, and control. That’s why we built an AI-powered Exposure Management platform that gives...

UncommonX

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