**MANTECH** seeks a highly skilled **Senior Proposal Manager** to join our Strategic Pursuit Proposal Operations team in **Herndon, VA** . This is a hybrid position. This individual will lead the end-to-end proposal process for large-scale, complex AAS-FEDSIM opportunities and will be responsible for orchestrating winning proposal efforts in alignment with FEDSIM requirements, ensuring compliance, clarity, and competitiveness in every submission. You will play a pivotal role in translating customer needs into compliant, compelling, and high-quality proposal responses that showcase our technical expertise and ability to deliver mission success. **Responsibilities include but are not limited to:** + Lead the full proposal lifecycle for FEDSIM acquisitions, including schedule management, compliance tracking, and post-submission activities. + Develop and enforce detailed compliance matrices, ensuring alignment with solicitation requirements, evaluation factors, and FEDSIM standards. + Facilitate structured color team reviews (Pink, Red, Gold, White Glove) and ensure proposals align with capture strategies and win themes. + Collaborate with capture managers, solution architects, pricing leads, SMEs, and subcontractors to shape strategy and integrate compliant, compelling content. + Oversee the development of written volumes and presentation materials (technical, management, scenario, cost/price), ensuring clarity, compliance, and polished visuals. + Provide coaching and mentoring to writers and leads, reinforcing best practices for FEDSIM oral presentations, technical challenges, and continuous quality improvement. **Minimum Qualifications:** + 8+ years of experience managing proposals for Federal government acquisitions, and a strong track record of working FEDSIM pursuits. + Deep knowledge of FEDSIM procurement processes, including slide/oral presentations and technical edits, technical challenges, and written volume requirements. + Proven ability to manage cross-functional teams under tight deadlines in a collaborative, fast-paced environment. + Strong organizational and leadership skills with meticulous attention to detail. + Proficiency with proposal tools and platforms (e.g., SharePoint, MS Teams, Adobe Acrobat, Google, and MS Office Suite). **Security Clearance Requirements:** + U.S. Citizen **Physical Requirements:** + Office-based work with extended periods of sedentary activity and occasional movement + Travel by car or air to attend meetings and conferences as needed + Frequent communication with colleagues, management, and clients, including presentation delivery and accurate information exchange 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.