SOSi1

Senior Proposal Manager

At a Glance

Location
Reston, Virginia, United States
Employment
Full-time
Experience
10+ years
Posted
2026-08-05T15:19:43.199Z

Key Requirements

Domain Knowledge

  • Education
  • Government

Requirements

Minimum of 10 years of progressively responsible proposal development experience, including at least 5 years as a Proposal Manager within the federal government contracting environment.

Proven ability to analyze complex RFPs, develop compliant proposal structures, identify required resources, and ensure proposal responsiveness.

Demonstrated success leading proposal teams, conducting status meetings, and managing the end-to-end proposal development process.

Compensation & Benefits

Work Environment

The Senior Proposal Manager will typically work in an office environment, but there may be opportunities for remote work. The role may require occasional travel to meet with clients or attend industry events. The position often involves working under tight deadlines, which may necessitate working outside of regular business hours.

Working at SOSi

All interested individuals will receive consideration and will not be discriminated against for any reason.

Responsibilities

SOSi is seeking a highly accomplished and industry-recognized Senior Proposal Manager to join our Proposal Development team at our headquarters in Reston, Virginia.

The successful candidate will provide strategic leadership and management oversight throughout the proposal development lifecycle, ensuring the delivery of compelling, compliant, and customer-focused proposals that support company growth objectives.  Join SOSi and play a critical role in shaping winning solutions and driving business growth across the federal marketplace.

Lead and mentor cross-functional proposal teams, fostering collaboration and driving the development of innovative, customer-centric proposal solutions.

Analyze and interpret Requests for Proposals (RFPs), identify proposal requirements, create compliant outlines, and develop compliance matrices to guide volume leads and authors.

Support the development and execution of proposal strategies and win themes throughout the proposal lifecycle.

Partner closely with Capture Managers to develop and implement winning strategies for corporate-led opportunities.

About the Company

Founded in 1989 and headquartered in Reston, Virginia, SOSi is a private defense and government solutions business specializing in advanced technology systems and mission support. Its capabilities include data science, software development, network engineering, intelligence, surveillance, and reconnaissance (ISR), and logistics.