Top Tech Companies in Illinois (10,000+)

At New York Life, our 180-year legacy of integrity, mutuality, and financial strength fuels a future defined by bold transformation. As the largest mutual life insurance company in the U.S., we operate on behalf of our policy owners—not shareholders. That structure allows us to take a long-term view, investing in people, purpose, and innovation that endures. Guided by a clear enterprise vision...

Cisco ThousandEyes is a Digital Experience Assurance platform that empowers organizations to deliver flawless digital experiences across every network – even the ones they don’t own. Powered by AI and an unmatched set of cloud, internet and enterprise network telemetry data, ThousandEyes enables IT teams to proactively detect, diagnose, and remediate issues – before they impact end- user experiences. ThousandEyes...

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...

Since 1986, HCSS been developing software to help construction companies streamline their operations. Today, HCSS is recognized as a pioneer and leader in the market, serving thousands of construction companies across the nation. Year after year, they continue to innovate, refine, and expand their products as the industry evolves. HCSS'​ mission is to help customers dramatically improve their business through innovative,...

SentiLink is the leading fraud intelligence company, providing financial institutions and fintechs with purpose-built solutions for identity verification and fraud prevention. Our products detect synthetic fraud, identity theft, and hard-to-detect first-party fraud in real time — helping partners stop losses before they happen while approving more legitimate customers. Founded in 2017 by Naftali Harris and Max Blumenfeld, creators of the risk...

HiBob helps modern, mid-size businesses transform the way they manage people, giving HR and managers all they need to connect, engage, develop, and retain top talent. Since 2015, we’ve achieved consecutive triple-digit year-over-year growth, all backed by our amazing team of Bobbers from across the globe, making us the choice HRIS of over 4000 midsize and multinational companies. Our HR platform...

Commerce (Nasdaq: CMRC) empowers businesses to innovate, grow, and thrive through an open, AI-driven commerce ecosystem. As the parent company of BigCommerce, Feedonomics, and Makeswift, we help brands unlock the full potential of their data, connect systems, and deliver seamless, personalized experiences across every channel. Visit commerce.com or follow us for more. #PoweredByCommerce

ZS is a management consulting and technology firm that partners with companies to improve life and how we live it. We transform ideas into impact by bringing together data, science, technology and human ingenuity to deliver better outcomes for all. Founded in 1983, ZS has more than 15,000+ employees in over 40 offices worldwide.

Ahold Delhaize USA, a division of global food retailer Ahold Delhaize, is part of the U.S. family of brands, which includes five leading omnichannel grocery brands – Food Lion, Giant Food, The GIANT Company, Hannaford and Stop & Shop. Our associates support the brands with a wide range of services, including Finance, Legal, Sustainability, Commercial, Digital and E-commerce, Technology and...

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,...

We bring together clinical expertise, always-on tools, and deep insights so clients can improve their lives, providers can build practices they're proud of, and businesses can offer more effective, more efficient care. We believe mental health is a never-ending pursuit, and we build toward that progress every day. For our team, that means a day's work can literally change someone's life....

We’re a Detroit-based company obsessed with helping our clients achieve the dream of homeownership and financial freedom. Our flagship business, now known as Rocket Mortgage, was founded by Dan Gilbert in 1985. Since then, we’ve revolutionized the mortgage industry – twice – and taken our place as the industry leader. Today, the Rocket brand is synonymous with providing simple, fast...

Doodle Labs designs and produces industrial-grade wireless networking solutions. The company focuses on mesh networking for robotic systems, providing high throughput, long-range Mesh Rider solutions for UAVs, UGVs, AMRs and other robotic applications. The company’s Helix Mesh Rider Radio was developed with sponsorship from DIU and is the Blue UAS program’s datalink of choice. Doodle Labs was named one of Fast...

Hometap is on a mission to make homeownership less stressful and more accessible. Our home equity investment product provides homeowners with a fast, simple, and straightforward way to access the equity in their home without taking out a loan or having to sell. By investing alongside homeowners, Hometap offers debt-free cash in exchange for a share of their home’s future...

Built In is helps professionals discover companies, understand what it’s like to work there, and find their next opportunity. For candidates, we bring together company information, workplace insights and open roles to provide a balanced view of the employee experience, including both the strengths and challenges of working at a company. For employers, Built In provides intelligence and tools to...

As the trusted choice for digital agencies, SaaS platforms, and web professionals, Duda powers over 1 million websites worldwide. Our platform offers a comprehensive suite of tools that enable users to efficiently create pixel-perfect, feature-rich websites at scale.

BuildOps is the AI-native platform for commercial contractors. Built for the complexity of large-scale commercial work, it replaces disconnected tools and manual workflows with a single system that runs every job from quote to close. At the center of the platform is OpsAI, BuildOps' intelligence layer designed for real work in the trades. OpsAI helps dispatchers send the right tech in...

Octus, was founded in 2013 with a simple conviction: credit decisions deserve clarity, not chaos. Markets were fragmented. Intelligence was gated. Data lived in silos. Professionals were forced to stitch together incomplete pictures while the clock kept running. We built Octus to change that. Octus is the essential credit platform that tracks the entire credit lifecycle. From origination and underwriting to...

Join. Grow. Lead the Future of Supply Chain. At Cleo, we don’t just integrate supply chains—we orchestrate them. As the pioneer and global leader of the Supply Chain Orchestration software category, Cleo is helping thousands of companies around the globe drive transformation, deliver excellence, and shape the future of their global operations. Whether you're joining us from outside or growing within, Cleo...

By automating and streamlining common accounting workflows to make them more efficient, FloQast is where accounting teams want to work so they can focus on what matters most, even when that’s just logging off on time. Whether automating reconciliations, documentation requests, or streamlining recurring accounting processes, such as the month-end close, financial reporting, or payroll, FloQast's platform enhances the way...