Top Tech Companies in Illinois (8,968)

At Braze, we believe in the passion of our people. We seek to ignite that passion by setting high standards, championing teamwork, and creating work-life harmony. We thrive when people add their unique perspectives to our ever-growing teams—and we strive to empower you to make an impact that fuels both you, and our business.

At Capital One, we think and work like a tech company, using our digital fluency to transform everything about the customer experience. We’re bending data to our will, and turning a stodgy industry on its head. That’s reflected in our ranking as the number one business technology innovator in the U.S. in the 2016 InformationWeek Elite 100.

Alliant is unlike any other financial institution — a digital credit union that wows our members. We’re boldly disrupting banking norms to do good for our members, employees and communities. With 90 years of history and more than $19 billion in assets, Alliant Credit Union is the largest credit union in Illinois and one of the largest in the U.S. Our industry-leading...

McMaster-Carr is trusted by industrial customers around the world to keep manufacturing lines running, operations moving, and turn new ideas into real products. Since 1901, we’ve earned that trust by offering the right products, making them easy to find, and delivering them quickly. Our industry-leading e-commerce experience, indispensable product selection, and world-class service bring hundreds of thousands of customers to our...

Chamberlain Group is a global leader in intelligent access and Blackstone portfolio company. Powered by its myQ technology platform, CG delivers seamless, secure access solutions for millions of homeowners, businesses, and communities around the world. CG's flagship brands, LiftMaster® and Chamberlain®, are trusted in more than 36 million homes, while over 15 million users rely on the myQ® app each day...

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...

Our platform creates comprehensive digital twins of your supply chain with AI-powered digital workers to automate resolution, improve collaboration and drive outcomes across all stakeholders. Unlike traditional control towers, we enable true real-time execution and intelligent fulfillment, transforming both your supply and customer-facing operations.

Flywire is a global payments enablement and software company. We combine our proprietary global payments network, next-gen payments platform and vertical-specific software to deliver the most important and complex payments for our clients and their customers.

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,...

HERE Technologies is a location data and technology company that created the first digital map over 35 years ago. Today we are the world's leading location platform company with a global footprint across 52 countries. Although our strongest presence is in the automotive industry, we also work with leading companies across a wide range of industries, including transport and logistics,...

We solve for advertising campaign and creative complexities - both key elements to the time/money savings and performance that brands, agencies and businesses seek. Our unified platform combines media, creative, and intelligence, offering end-to-end workflows powered by AI across the open and closed web. With over 700 brands and advertisers, we've proven that dynamic and personalized creative makes advertising impactful. We...

Supernova is the technology leader in securities-based lending ("SBL") solutions that connect and empower the entire financial ecosystem. We offer the world’s first and only cloud-based, fully-customizable, end-to-end software solution to automate securities-based lending from origination through the life of the loan.

At Affirm, we help people say yes to the things that matter with flexible, transparent ways to pay over time. No hidden fees, no compound interest, and no fine print—just a smarter way to spend.

Basis is a leading global provider of automation software designed specifically for enterprise marketers. Our platform, Basis, is the industry’s only comprehensive digital media solution that seamlessly integrates programmatic, site-direct, advanced TV, search, and social media within a single interface. By unifying these functions, Basis simplifies complex and disconnected media operations, automates repetitive tasks, and minimizes manual processes, enabling marketing...

NinjaTrader's engineering, product, and operations teams build for nearly 4 million futures traders worldwide. Real users, real markets, real confidence in the tech behind every trade. We've been at this since 2003 — launching our own brokerage in 2014 and our FCM in 2021 — and we know what scale looks like in this category. In 2025, NinjaTrader joined Kraken and...

Zynga was founded in 2007 with the vision that play would become one of the core activities on the Internet. We pioneered social games with the belief that if we could make games simple, accessible and social the world would start playing. We are excited that games have grown to become the second most popular activity by time spent, even...

Bectran is an industry-leading SaaS platform which has grown rapidly to become the companion toolkit for the Credit Department just as a CRM is for the Sales Department. Recognized as a top innovator in the credit software industry, Bectran has been described by credit professionals as "the future of the credit department."​

Here at Strata, we provide financial planning software, data, and insights to drive decisions and performance for organizations spanning the healthcare, higher education, and financial services industries.

PartySlate is a fast-paced Chicago startup disrupting the $156 billion events industry in the United States. There are 13 million parties per year, produced by over 460,000 venues and vendors. PartySlate connects people planning all types of events — from weddings and corporate events to galas and milestone birthdays — with the venues and vendors who can bring their ideas...

We contribute to human progress by empowering people to express themselves, live in the moment, learn about the world, and have fun together.