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Centra Technology

The Company

CENTRA is an employee-owned company defined by its people. Led by Harold Rosenbaum, an astronautical engineer, CENTRA has been providing its clients with exceptional support since 1997. Harold built CENTRA by recruiting smart, hardworking people with advanced technical skills and extensive professional experience. Our company fosters collaboration and initiative. Over the years, we have expanded from applying our skills to aerospace engineering issues to serving a broad range of clients with critical defense, intelligence, and security missions. We are proud of the trust our clients place in us and the consistency with which they turn to us for assistance.

Our People

We have assembled a team of dedicated people with exceptional educational backgrounds and diverse career experiences. Over 50 percent of our staff holds advanced degrees. Our employees boast service in all branches of the US military, as well as work experience in the national security agencies of the US Government, academia, and industry. We support our employees’ continued growth through education funding for advanced degrees, specialized certifications, language training, and substantive collaboration in the workforce. We invest in our employees to support a team and spirit that is unparalleled in both career satisfaction and its ability to deliver for our clients.

Central Iowa Power Cooperative

CIPCO is Iowa's largest cooperative energy provider serving 13 rural electric cooperatives and associations spanning 58 of Iowa's 99 counties. CIPCOs' members distribute power to nearly 300,000 Iowans and more than 12,000 commercial and industrial accounts.

CIPCO is a state-of-the-art energy provider with a diverse fuel mix of coal, nuclear, hydro, wind, landfill gas, natural gas, and oil energy resources. We continue to invest in new technology and renewable energy production, supporting Iowa’s development of renewable energy resources. Over half of our electricity is generated from emission- and carbon-free resources, minimizing the impact to the environment.

For more information about CIPCO please visit:

EOE M/F/Disability/Veteran

Central Semiconductor Corp.

Central Semiconductor Corp.


CH2MHILL BWXT West Valley, LLC (CHBWV) is an environmental cleanup contractor under contract to the Department of Energy (DOE) whose mission is to decommission a former nuclear fuel reprocessing facility. CHBWV is located 35 miles south of Buffalo, New York, close to excellent ski resorts, boating, and fishing on Lakes Erie, Ontario and Chautauqua.

Challenge Unlimited, Inc.

Headquartered in Alton, Illinois Challenge Unlimited, Inc., and its affiliate company Residential Options, Inc., is a multi-tiered organization.

For more than 50 years, the organization has been committed to serving individuals with disabilities, while earning a reputation as a trusted business partner to private commercial companies and federal and state government agencies.

As a Commission on Accreditation of Rehabilitation Facilities (CARF) accredited Community Rehabilitation Program (CRP) provider, Challenge Unlimited fulfills its mission through adult and youth programs, work skills training centers, employment services, and community-integrated living options. Promoting people to achieve their highest level of independence through opportunities.

As a social entrepreneur, Challenge Unlimited has grown its business services from a single custodial contract to over 50 service and production contracts. We deliver quality solutions in facility managementproduction services and staffing services. An authorized partner of the AbilityOne Program, Challenge Unlimited manages operations across four states: Illinois, Missouri, Wisconsin and South Carolina.

Today, Challenge Unlimited employs over 900 workers; of which approximately 600 are individuals with disabilities. Click here to learn more about our award-winning services.

Charm Sciences, Inc.

After developing the world’s first rapid test for antibiotics in milk in 1978, Charm Sciences has grown to become a leading global provider of food safety, water quality and environmental diagnostics equipment. Charm’s portfolio includes test kits and systems for antibiotics, mycotoxins, and sanitation/hygiene (ATP). Selling directly and through its network of distributors, Charm products serve the dairy, feed & grain, food & beverage, water, healthcare, environmental, and industrial markets in more than 90 countries. Customers rely on Charm products for excellence in quality, innovation and customer support.

Chicago Zoological Society - Brookfield Zoo

The mission of the Chicago Zoological Society is to inspire conservation leadership by connecting people with wildlife and nature.

Since the opening of Brookfield Zoo in 1934, the Chicago Zoological Society has had an international reputation for taking a cutting-edge approach to animal care and conservation of the natural world.  Among its many historical firsts are indoor multi-species immersion exhibits, cutting-edge methods of animal husbandry, and exceptional medical care that includes successful brain surgery on a gorilla, among many other notable “firsts.”

Today, there is an increasing need for conservation leaders to guide, teach, and motivate people to protect the world’s wildlife and the environment.  We operate under the premise that the decisions each person makes as an individual and that we make as a society regarding the natural world will have a profound impact on our future and that of our children.  The Society works to inspire and engage all people to make a positive impact on the natural world around us.  In building its conservation legacy, the Society has launched two Centers of Excellence, the Center for Conservation Leadership and the Center for the Science of Animal Welfare.  These innovative learning and research hubs integrate a wide variety of disciplines, changing the way animal conservation issues are addressed and advancing the science of animal care around the world. 

The Society pursues its important mission through its management of the Brookfield Zoo for the Forest Preserves of Cook County and through its programs in animal care, education, science and research, both here and abroad.  Brookfield Zoo, is a prime Chicagoland leisure destination and one of the world’s top zoos, hosting over 2 million visitors each year. 

Our core institutional values--People, Results, Innovation, Diversity, and Enthusiasm (or “PRIDE”) are emphasized in all aspects of our operations.  Through our commitment to these values and our prudent use of resources, the Chicago Zoological Society has established a leadership role as a conservation center with a superior quality of service for the communities we serve.

The Chicago Zoological Society is an Equal Opportunity Employer / Affirmative Action Employer - Minorities/Women/Veterans/Disabled.

The Chicago Zoological Society is a private nonprofit organization that operates Brookfield Zoo on land owned by the Forest Preserves of Cook County.

Chicago Zoological Society/Brookfield Zoo

The Chicago Zoological Society is a private, non-profit corporation whose mission is to inspire conservation leadership by connecting people to wildlife and nature.  We operate under the premise that the decisions we make as individuals and as a society regarding the natural world will have a profound impact on our future and that of our children.  Through our Center for Conservation Leadership and Center for the Science of Animal Welfare, we work to deepen people’s relationship with nature and equip them with the knowledge, skills, and motivation to take positive conservation action and to inspire others to do so.  The Society pursues its important mission through its management of the award-winning Brookfield Zoo for the Forest Preserve District of Cook County and through its community and field-based programs in animal care, education, science and research, both here and abroad.  Brookfield Zoo, a prime Chicagoland leisure destination, is also one of the world’s top zoos, hosting 2 million visitors each year and proud to have one of the largest number of member households amongst cultural institutions in Chicagoland.

Children's Home + Aid

Children’s Home + Aid is a leading child and family service agency in Illinois. The organization helps children recover their health, their hope, and their faith in the people around them.

We link children to a network of opportunity and care, to extended family, teachers, mentors, and the resources of the neighborhood and community. For more than 130 years, the organization has gone wherever children and families need them, and where that work has been proven to be most effective: at home, in the classroom, in the neighborhood, in the course of daily life. The organization has offices located across Illinois and serves more than 40,000 children and families each year in over 60 counties.

Church & Dwight Co Inc

Church & Dwight Co., Inc., founded in 1846, and headquartered in Princeton, New Jersey, is the world’s leading producer of Sodium Bicarbonate. This natural product, popularly known as Baking Soda, cleans, deodorizes, leavens and buffers. Our Company’s famous ARM & HAMMER® Brand is one of the nation’s most trusted trademarks for a variety of household and personal care uses. Today, Church & Dwight is a leader in the Household Consumer Products and Personal Care industry, with such brands as ARM & HAMMER, Trojan, First Response, Arrid, Nair, Mentadent, Spinbrush, Close-Up, Scrub Free, Oxi Clean and more.