Top Chicago, IL Defense Companies (15)

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...

HDT Global is widely recognized for its industry-leading production of state-of-the-art, fully integrated deployable solutions such as shelters, generators, heaters, air filtration devices and other engineered solutions, which are currently being used by U.S. and allied military units deployed worldwide, as well as civilian government and commercial customers.

Sigma Engineered Solutions is a vertically integrated provider of precision-engineered products and solutions, specializing in manufacturing, metal casting, stamping, and engineering design services for industries including aerospace, defense, and construction.

BryceTech has partnered with technology and R&D clients to deliver mission and business success for nearly 20 years. Our teams help government agencies, Fortune 500 firms, and investors manage complex programs, develop IT tools, and forecast critical outcomes. We offer clients proprietary, research-based models that enable evidence-based decision making. BryceTech cultivates a culture of engagement and partnership with our clients.

AAR Corp is a global aerospace and defense aftermarket solutions company that provides aviation parts, repair, software, and government solutions to commercial and government customers worldwide. It is a leading provider of aviation maintenance, repair, and overhaul (MRO) services.

Camcraft Inc. is a global leader in manufacturing high-precision machined components for aerospace, automotive, diesel engines, and mobile hydraulics, utilizing advanced technology and automation for complex parts.

For over 170 years, Smiths Group has been pioneering progress by engineering a better future. We serve millions of people every year, to help make the world safer, more energy efficient and productive, and better connected, across four global markets: Energy, General Industrial, Safety & Security, and Aerospace & Defence. Listed on the London Stock Exchange, Smiths employs more than...

ATI Inc. specializes in advanced materials, including Ni/Co-base superalloys and specialty steels, serving industries such as Aerospace and Defense. The company also offers services in environmental remediation, research, facility management, construction, and building design.

Energy and Defence systems, purpose-engineered from first principles. 800+ installations, 25+ countries, 30+ years — designed and built entirely in-house.

EnerSys is the global leader in stored energy solutions for industrial applications. We complement our extensive line of motive power, reserve power, aerospace/defense and specialty batteries with a full range of integrated services and systems. With sales and service locations throughout the world, and over 100 years of battery experience, EnerSys is the Power/Full Solution for stored DC power products. ...

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Astronics Corporation designs, manufactures, and markets innovative technology solutions, including lighting, control systems, and electronics, for the aerospace, defense, and other mission-critical industries.

Corterra Solutions designs, develops, and manages enterprise solutions and transformative business applications so you can focus on meaningful work that drives success. In other words, we give you the freedom and clarity of knowing that your technology works the way it should.

Head of Security LLC is a premier security risk management consulting firm dedicated to safeguarding your assets, operations, personnel, and reputation. Specializing in physical, operational, personal, and business security management, our team of highly skilled Security Management Consultants provides tailored, actionable solutions. Through in-depth threat risk assessments, strategic recommendations, and comprehensive implementation, we equip businesses, organizations, properties, and communities with robust...

ShadowTech Labs is a technology-first engineering firm, distinguished by its highly skilled and innovative staff, who possess deep experience in regulated, critical infrastructure environments. Our team combines software engineers, systems architects, and nuclear security experts—each committed to mission assurance, regulatory compliance, and operational excellence. Over the past decade, our engineers have made significant contributions to advancements in surveillance technologies and...