Top Tech Companies in Chicago, Illinois (4,889)

DFIN is a leading global risk and compliance solutions company. We provide domain expertise, software and data analytics for every stage of our clients’ business and investment lifecycles. Markets fluctuate, regulations evolve, technology advances, and through it all, DFIN delivers confidence with the right solutions in moments that matter.

Artera, a SaaS leader in digital health, transforms patient experience with AI-powered virtual agents (voice and text) for every step of the patient journey. Trusted by 1,000+ provider organizations — including specialty groups, FQHCs, large IDNs and federal agencies — engaging 100 million patients annually. Artera’s virtual agents support front desk staff to improve patient access including self-scheduling, intake, forms,...

Build what’s next — with tech that matters PwC provides professional services across Audit and Assurance, Advisory and Tax — powered by a global network of over 370,000 people in 149 countries. You may know us for our business expertise, but technology is core to how we help clients move faster, build trust and deliver meaningful outcomes. As a technologist, you’ll work...

That’s why we’re investing heavily in the right people, technology, and media to make that happen in the US and across the globe.  The tasty house of brands empowers individual traders differently. tastylive, founded in 2011, is an online financial media network, tastytrade (previously known as tastyworks) is a self-directed retail brokerage firm that launched in 2017, tasty Software Solutions and tastyfx, is...

CSC is a global leader in providing business, legal, tax, and digital brand services to companies around the world. With more than 8,000 employees, CSC operates in more than 140 jurisdictions, delivering solutions that help businesses thrive. We pride ourselves on our client-focused approach, market-leading expertise, and unmatched global reach.

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...

Leading a successful professional service firm is an art. Running a profitable firm is a business. We understand this because our founder ran an IT Consulting firm for over 15 years. He grappled with the same challenges that professional service firm owners face today. How do I know what my employees are working on? How can I connect time and...

Energy CX is the fastest growing energy brokerage in the U.S. Known for transforming the way clients navigate the complex energy landscape, our data-driven approach and dedication to innovation position us as a leader in the energy brokerage industry. As a family-owned business, we've been laser-focused on our commitment to advancing energy solutions. We help clients maximize savings, efficiency, and...

Who We Are Founded in 2001, Adage Technologies is a digital engineering firm building modern, AI‑enabled solutions that help organizations engage their audiences and operate more efficiently. With offices in Chicago and Medellín, our 120‑person team blends strategy, design, engineering, and data to create impactful digital experiences for performing arts organizations, associations and accreditation bodies, and manufacturing and distribution companies. What We...

Lessen is the tech-enabled, end-to-end property service provider that is transforming how commercial and residential real estate services are delivered and managed at scale. Lessen’s technology platform provides data-driven insights that unlock key growth opportunities for the entire real estate ecosystem—including investors, owners, managers, and service providers. The company leverages a network of over 30,000 vetted, qualified vendors (Lessen Affiliates)...

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...

Over the last 15 years, we’ve grown from a startup to a market-leading organization with over 150 team members, and we’ve created an award-winning culture that makes this company an amazing place to work. We've been ranked on multiple best places to work lists including the 2026 BuiltIn Chicago rankings.

Together, we've turn ambition into action. For more than three decades, Citadel has captured undiscovered market opportunities in markets around the world by empowering extraordinary people to pursue their best and boldest ideas. We strive to identify the highest and best uses of capital to generate superior long-term returns for the world’s preeminent public and private institutions.

Sittercity, a Bright Horizons company, is a technology platform working to reimagine the child care industry. Finding, hiring and managing high-quality, trustworthy and enriching child care has never been simple, for parents or caregivers. We want to change that. At Sittercity, you can imagine and create solutions that will revolutionize a multi-billion industry and bring relief to parents and care...

At Arrive Logistics, our relentless pursuit of perfection fuels our ability to optimize operations, identify efficiencies, build technology, and deliver innovation that pushes businesses like yours forward. But it’s not just what we do that sets us apart from everyone else — it’s what we’re made of grit, determination, and a 24/7 commitment to our partners. The details matter. We don’t...

CWAN was founded on a simple belief: investment professionals deserve modern technology that actually works for them. Not legacy systems that slow them down. Not fragmented data that creates confusion. But one comprehensive platform that gives you complete visibility and crystal-clear insights. The result? Investment management that works as seamlessly as your investment strategy. Since our founding in 2004, CWAN has been...

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.

YCharts was founded in 2009 to democratize investment research. As we build an increasingly powerful and intuitive tool that our clients use daily, we might be outgrowing our name—but not our mission. From humble beginnings, YCharts has grown to become an all-in-one platform for investment research and client communication. Our guiding principle has always been to create software that elevates and...

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...

Hudson River Trading brings a scientific approach to trading financial products. We have built one of the world's most sophisticated computing environments for research and development. Our researchers are at the forefront of innovation in the world of algorithmic trading.