Senior Proposal Coordinator

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.

• 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.

• Working knowledge of federal procurement processes and solicitation structures (RFP, RFQ, RFI etc.).
• 3+ years of federal proposal coordination with hands-on experience supporting a variety of solicitation requests such as RFP, RFQ, RFI, TOs, OTAs, and CSOs.
• Ability to manage multiple tasks and deadlines in a fast-paced environment.
• Experience with proposal writing, editing, formatting, and compliance review.
• Strong communication skills and ability to collaborate with diverse stakeholders.
• Proficiency with MS Office, SharePoint and other collaboration platforms 
• Excellent communication, leadership, and stakeholder management skills.

• Shipley certified or similar capture methodologies.
• APMP certification (Foundation, Practitioner, or Professional).
• Familiarity with AI-enabled proposal software to support drafting, formatting, and compliance checks.
• Exposure to or willingness to learn non-traditional DoD acquisition vehicles (SBIR Phase III, OTAs, CSOs, Consortia).
• Experience with NextStage CRM system.

Our Core Values

• Bias for Action: Decisive. Purposeful. Agile. We move with the speed of relevance to drive impact and progress.
• Integrity: Respect. Ethics. Transparency. We do what’s right and earn lasting trust.
• Delivery Excellence: Customer-obsessed. Mission-focused. Quality-driven. We deliver innovative outcomes that exceed expectations.

Our EVP Promise
Join Sabel Systems, where your contributions drive impact, your growth is continuously supported, and your well-being is at the center of how we work. Together we can build the future with purpose. Rewarding Impact. Building Futures Together.

Compensation

Compensation will be determined in partnership with the Hiring Manager and may vary based on factors such as contract and labor category alignment, relevant experience, skills, education, certifications or licenses, and geographic location.

Sabel Systems is committed to offering all employees a competitive benefits and compensation package that is comprehensive enough to meet their goals and needs. Our employees are our most valuable asset, and one of Sabel Systems largest financial investments is our benefits program. As a valued member of the organization, employees are provided with a host of benefits to include healthcare; financial assistance in the event of illness, injury, disability, loss of work, or death; health savings accounts; retirement plans; paid time off; paid holidays; education and training program reimbursement, to name a few.

Equal Employment Opportunity

Sabel Systems is an equal opportunity employer. Our hiring decisions are based solely on qualifications, merit, and business need. We prohibit discrimination and harassment of any kind across all employment practices within our organization. Sabel Systems participates in the E-Verify Employment Verification Program.

Reasonable Accommodation

Sabel Systems is committed to providing equal employment opportunities and ensuring an accessible application process for all candidates. Applicants with disabilities who require reasonable accommodation to participate in the application or interview process are encouraged to contact us at [email protected] for assistance.