Ground every answer in facts on this page and the original listing. We never invent Glassdoor-style reviews or salaries that are not in our data.
Prepare stories on a complex RFP you drove to on-time submission, how you resolved conflicting SME inputs, and how you handled a last-minute requirement change. Be ready to walk through color-team process, compliance tracking, and how you balance win strategy with page counts and evaluation criteria.
Strong fit if you have led full proposal life cycles, thrive on deadline pressure, and prefer on-site collaboration in Reston. Thin public sentiment and mixed news signals mean you should verify SOSi’s mission, clearance needs, and team structure directly in the interview process.
As Senior Proposal Manager at SOSi you would own capture-to-submission work: plan proposal calendars, assign volume leads, enforce compliance with RFP instructions, run color-team reviews, and lock final packages. Expect heavy coordination with capture, contracts, pricing, and technical SMEs, plus deadline-driven editing and risk checks before government or commercial bids go out.
Build capture planning, RFP compliance matrices, win themes, and review-cycle facilitation. Free resources aligned to this operations-style path:
No. The listing marks remote as off; expect on-site work in Reston, Fairfax County.
Schedule control, volume ownership, compliance to the RFP, review cycles, and final production quality for competitive bids.
Saylor Business & Management courses and Google’s free project-management intro resources are both listed as free in the cert data.
Website: sosi.com
Public cache only — not an employee review.
Senior Proposal Manager with Security Clearance at SOSi in Reston, Fairfax County Position Summary SOSi is seeking a Senior Proposal Manager to join our team. This role requires a security clearance and involves leading complex proposal efforts for government contracts. The ideal candidate will have extensive experience managing high-stakes proposals and working with cross-functional teams. Day-to-Day Responsibilities Lead the development of comprehensive proposals in response to RFPs, RFQs, and other solicitation documents. Coordinate with internal stakeholders including technical, program management, legal, and financial teams to ensure proposal accuracy and completeness. Develop and maintain project plans for proposal submissions, ensuring timely delivery. Conduct market research and analysis to support the development of compelling proposals that align with client needs. Ensure compliance with all security clearance requirements and company policies. What You Bring A minimum of 10 years of experience in proposal management, with a focus on government contracts. Experience with Level III or higher security clearances. Strong leadership skills to manage and motivate cross-functional teams. Excellent written and verbal communication skills for crafting persuasive proposals. Familiarity with proposal development tools and software. Working at SOSi SOSi is a private defense and government solutions business specializing in advanced technology systems and mission support. Our capabilities include data science, software development, network engineering, intelligence, surveillance, and reconnaissance (ISR), and logistics. As part of our team, you will have the opportunity to work on cutting-edge projects that make a difference in national security. Applying for This Role To apply, complete your application directly on this page, or you'll be redirected to the employer's application platform to finish submitting there. Please ensure all required fields are filled out and submit your resume and cover letter highlighting relevant experience. To apply, complete your application directly on this page, or you'll be redirected to the employer's application platform to finish submitting there.
Generated for personal interview prep · 2026-08-06 UTC · getajob.ai