Senior Proposal Coordinator

Why Sabel Systems Sabel Systems designs and delivers digital engineering ecosystems for DoD programs, enabling teams to connect data, systems, and personnel within secure, scalable environments. Our solutions empower programs to make faster decisions, close sustainment gaps, and meet the digital acquisition requirements.

Rather than simply proposing transformation, we implement and operate it at scale. Our method is clear: we orchestrate existing tools into a governing system of record, ensuring government ownership of infrastructure and traceable decisions. There’s no vendor lock, no proprietary baselines, and no need for ATO rebuilds during transitions.

Sabel Systems is redefining modern defense acquisition. If you seek to solve complex challenges at scale and want your work to directly accelerate military capability while reshaping the DoD’s approach to digital engineering, this is the place for you.

Complexity Simplified. Mission Amplified. What You’ll Do

• Coordinate a variety of proposal activities across the entire lifecycle, from kickoff through submission.
• Independently manage small proposals or Task Orders, ensuring compliance, accuracy, and timely delivery.
• Support larger, more complex proposals with scheduling, content development coordination, compliance checks, and document management.
• Track and monitor opportunities in NextStage, GovWin, SAM.gov, and other business development platforms, flagging upcoming solicitations and key dates for the Proposal and Capture teams.
• Serve as a flexible, multi-disciplinary contributor able to assist with writing, editing, desktop publishing, compliance matrices, outline development, and final production.
• Support formatting, compilation, and quality checks across multiple volumes in coordination with other departments such as Pricing and Contracts.
• Maintain proposal libraries, templates, resumes, past performance artifacts, and other reusable content.
• Work closely with Capture Managers, Proposal Managers, SMEs, and other internal stakeholders to ensure proposal requirements are met.
• Contribute to process documentation, templates, and lessons-learned as directed by the assigned Proposal Manager.
• Track deadlines, action items, and status updates to keep proposal efforts on schedule.
• Format and edit proposal documents to meet customer guidelines and internal quality standards.
• Support color team reviews, integrate feedback, and prepare final proposal deliverables.
• Help ensure proposals are compliant with solicitation requirements and reflect a consistent corporate voice and messaging.
• Contribute to continuous improvement efforts within the Proposal Team.