ManTech seeks a motivated, career and customer-oriented **Systems Engineer** to join our team in **Aberdeen Proving Ground, MD.** This is an onsite position. **Responsibilities include but are not limited to:** + Focus on delivering high-quality DoD 5000.02 artifacts and documentation that support critical US Government programs. + Apply comprehensive systems engineering principles across all phases of the systems lifecycle, ensuring successful project outcomes. + Engage effectively with Government stakeholders, providing expert technical guidance on systems engineering matters and resolving issues proactively. + Communicate clearly and concisely with project personnel, Government representatives, and senior executives. + Maintain the technical integrity and quality of all work and deliverables in alignment with ISO/IEC15288 process areas, driving operational excellence. + Develop and contribute to key systems engineering documentation, including System Engineering Plans, requirements specifications, and interface control documents, ensuring accurate project execution. + Provide leadership and mentorship to subordinate project and ManTech team members, fostering a collaborative and high-performing team environment. **Minimum Qualifications:** + Bachelor's degree in a STEM (Science, Technology, Engineering, or Mathematics) field. + 7 years of relevant work experience in systems engineering or a related field. + Obtain DoD 8570.01-m IAT Level III certification within 6 months. + Proven experience with DoD 5000.02 documentation requirements. + Experience with use case development, requirements derivation, and management. + Demonstrated ability to develop high-quality technical project artifacts. + Familiarity with Agile software development processes and methodologies. + Experience with software engineering processes and best practices. **Preferred Qualifications:** + Bachelor's degree in Systems Engineering. + Professional Certifications: Certified Systems Engineering Professional (CSEP), Expert Systems Engineering Professional (ESEP), or DAWIA Systems Engineering Level III. **Clearance Requirements:** + Top Secret Clearance with SCI eligibility. + Must be a US Citizen and able to obtain and maintain a Top Secret Clearance with SCI eligibility. **Physical Requirements:** + The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations. + Ability to travel to various physical customer locations within APG as needed. 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.