Technical Proposal Manager at S3 AeroDefense LLC – Milwaukee, Wisconsin

Purpose of the Job:

The Technical Proposal Manager is responsible for conducting in-depth technical research and developing high-quality proposals that align with customer requirements and organizational objectives. This role bridges engineering expertise with persuasive writing to deliver compelling proposals for turnkey aerospace and defense projects such as aircraft structural modifications, aircraft system upgrades, MRO depot setup, and customer technical training.

Reports to: Director of Engineering and Technical Solutions

Duties and Responsibilities:

• Perform detailed technical research on aircraft products, systems, and aircraft system integration to support proposal development.
• Collect and analyze Request for Proposal (RFP) requirements and ensure proposal compliance with all specifications and standards.
• Collaborate with engineering, suppliers, aircraft system integrators, and business development teams to develop customer proposals.
• Draft, edit, and format proposals, ensuring clarity, accuracy, and adherence to customer requirements and technical solution parameters.
• Work in partnership with the Business Development team to formulate distinctive value propositions that effectively address the specific decision-making factors of each customer.
• Develop cost, schedule, and risk narratives in coordination with subject matter experts.
• Maintain a library of technical content and reusable proposal materials for future bids.
• Support post-submission activities, including clarifications and revisions as requested.
• Produce supporting capture materials, including white papers, marketing literature, and technical presentations.

• Bachelor’s degree in Engineering, Technical Writing, or related field (or equivalent experience).
• 5+ years relevant experience writing detailed technical proposals in the aerospace/defense industry
• Strong understanding of aerospace systems and technical documentation standards.
• Excellent written communication skills with the ability to translate complex technical concepts into clear, persuasive language and graphics.
• Advanced skills in Microsoft Word, Excel, and PowerPoint.
• Ability to work under tight deadlines and manage multiple priorities.
• Experience using Canva is a plus
• Understanding of defense funding pathways is helpful but not required