Top Companies Hiring for Security Officer Jobs

G4S secures your people, property and assets by understanding and mitigating security risk. We offer a suite of products and services — including risk consulting and investigations, systems integration, security software and technology, and security professionals — that align to deliver innovative, essential and scalable solutions that span your entire operation. Although each G4S solution is market leading on its own, we can combine our offerings to provide a comprehensive customer experience that delivers real, sustained and measurable value.

The US Department of the Army has its marching orders. One of the three military departments (along with the Air Force and Navy) of the US Department of Defense, the Army provides ground-based military forces to deter and fight wars and protect the security of the US. The army has more than 675,000 soldiers, including active duty soldiers (nearly 75%) and reservists (Army National Guard and Army Reserves). Army personnel are deployed in about 80 countries. The Army operates about 40 forts throughout the US and has bases in Africa, Europe, Japan, the Middle East, and South Korea.

In 2021, G4S, a London-based global security company, was acquired by Allied Universal®, a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security solutions. This acquisition expands Allied Universal’s footprint and infrastructure on a global and local level. Through the company’s vast network of more than 800,000 employees, we leverage global best practices in communities all over the world. With revenues of $18 billion, we are supported by efficient processes and systems that can only come with scale to help deliver our promise locally: keeping people safe so our communities can thrive.

America’s Navy is the most versatile branch of the military, forging defense on land, in the air, and at sea. With opportunities across the globe and a commitment to serve the greater good, the Navy offers a life of fulfillment, advancement, and innovation to every Sailor.

The US Department of Homeland Security exists to keep America safe. Created in the wake of the 9/11 terrorist attacks, the department is devoted to keeping the US safe from natural and man-made disaster. Its activities include domestic nuclear detection, intelligence coordination, and protection of high-level government officials. The department's structure includes agencies for citizenship and immigration services, customs and border protection, emergency response and recovery (FEMA), and science and technology research. The US Department of Homeland Security has more than 230,000 employees and an annual budget of more than $55 billion.

As the U.S. government's official web portal, USA.gov makes it easy for the public to get U.S. government information and services on the web.

At Lockheed Martin, we don’t just think big thoughts. We get things done. And we're bringing together the best minds in the industry to do it. From our Advanced Development Programs, also known as the Skunk Works® to advances in renewable energy, we're always adapting, always innovating, and always figuring out ways to meet the needs of the real challenges our customers face. If you're ready to solve problems that don't have quick answers, check us out.

Raytheon Technologies Corporation is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises four industry-leading businesses – Collins Aerospace Systems, Pratt & Whitney, Raytheon Intelligence & Space and Raytheon Missiles & Defense. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Waltham, Massachusetts.

No matter how you measure it, by aircraft, ships, or active-duty military personnel, the US Department of Defense (DoD) is big. Except for Social Security, the Department of Defense -- comprising the Army, Navy, Air Force, Marines, National Guard, Reserves, and more than a dozen defense agencies -- is the largest component of US government spending. The 2012 budget for the Department of Defense is more than $670 billion, 18% of which will be used to fund the ongoing military engagements in Afghanistan and Iraq. The DoD maintains a force of about 1.4 million active duty service members and operates thousands of facilities around the world.