**MANTECH** seeks a motivated, career and customer-oriented **Journeyman Systems Engineer** to join our team in **Patuxent River, MD** . This is an **onsite** position. This position collaborates with a cross-service team to develop and deploy mission-critical systems that enhance planning, execution, and post-mission analysis across naval aviation platforms. The role supports a high-visibility, rapid Agile acquisition program delivering next-generation systems with real-time collaboration, automation, and advanced mission planning capabilities for Navy and Marine Corps aircrew, replacing legacy systems. **Responsibilities include but are not limited to:** + Participating in Agile software development activities such as backlog grooming, prioritization, sprint reviews, program increment reviews, and capability evaluations + Applying systems engineering methods to identify, design, and test solutions to complex engineering challenges, guiding system development and managing technical risks + Overseeing software acquisition and requirements management, including analysis, documentation, review, and evaluation of system changes and interfaces + Leading cross-functional working groups and collaborating with leadership, engineers, vendors, and software leads to develop solutions and enhance CMPC capabilities + Engaging with users to gather input and feedback for continuous improvement of NGNMPS, and coordinating with test and evaluation teams to assess software performance + Reviewing and contributing to Model-Based Systems Engineering (MBSE) models, project plans, schedules, and system descriptions + Preparing reports and briefs, delivering technical analyses and progress reviews to NAVAIR leadership, and actively participating in Agile development activities, technical reviews, and management boards **Minimum Qualifications:** + Bachelor’s degree in a technical or scientific field from an accredited college or university + 3+ years of recent, relevant experience + Demonstrated expertise in an engineering discipline + Hands-on experience with modern software technologies, large-scale Agile development, and DevSecOps practices **Preferred Qualifications:** + Experience utilizing MBSE models + Experience with Next-Generation Naval Mission Planning System (NMPS), Collaborative Mission Planning Continuum (CMPC) and associated software **Clearance Requirements:** + Must have an active Secret security clearance **Physical Requirements:** + Tasking is primarily computer based. The person in this position must be able to operate and perform tasking on a PC. + Must be able to effectively communicate with co-workers, clients, and management through email, phone, and other virtual communication methods (e.g. TEAMS, ZOOM). ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.