Modern Technology Solutions, Inc. (MTSI) is an employee-owned engineering services and technology solutions company based in Alexandria, Virginia. Founded in 1993, MTSI has approximately 2,255 employees and generates around $349 million in annual revenue. The company is recognized for its positive workplace culture, earning certifications such as Great Place to Work and ranking on various best workplace lists. MTSI specializes in systems engineering services, focusing on areas such as missile defense, cybersecurity, intelligence, unmanned systems, aviation, space, and homeland security. Their capabilities include operational concepts, design engineering, performance assessments, and testing. MTSI supports various sectors, including defense, government, and commercial markets, providing solutions for critical mission areas and technically challenging problems.