Quantico, VA 22134 • (33.1 miles) • Full Time • 8/30/2025

MANTECH seeks a motivated, career and customer-oriented Mission Systems Architect to join our team in Stafford, VA. In this role, you will play a key part in supporting Marine Corps mission engineering initiatives by aligning Modeling, Simulation, Analysis, and Wargaming (MS&A) activities with warfighting experimentation and joint interoperability efforts. You will work closely with stakeholders to plan, coordinate, and execute high-impact projects that directly influence operational readiness and decision-making.Responsibilities include but are not limited to: Define and translate mission objectives into system architectures, requirements, and design specifications in alignment with DoDAF/UAF standards.Develop mission concepts of operations (CONOPS), operational scenarios, and performance

Annapolis, MD 21401 • (41.9 miles) • Full Time • 9/1/2025

WHO WE AREAs the nation's largest producer of clean, carbon-free energy, Constellation is focused on our purpose: accelerating the transition to a carbon-free future. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Our culture and employee experience make it clear: We are powered by passion and purpose. Together, we're creating healthier communities and a cleaner planet, and our people are the driving force behind our success. At Constellation, you can build a fulfilling career with opportunities to learn, grow and make an impact. By doing our best work and meeting new challenges, we can accomplish great things and help fight climate change. Join us to lead the clean energy f