Business Development and Proposal Management Specialist at Mandex, Inc. – Fairfax, Virginia

Req ID: 163

Job Title: Business Development and Proposal Management Specialist

Location: Mandex Corporate Fairfax, VA, US 22033

Organization Unity: VA(ONR)

Date Opened: 2/10/2026

Job Type:

Full-time

Category:

Sales

Education:

Bachelor's Degree

Travel:

0 - 10%

Description: Business Development and Proposal Management Specialist

Fairfax, VA (On-site)

Salary Range: $70K-$90K

This position supports federal business development and proposal efforts by developing compliant, compelling, and well-structured responses to government solicitations. Proven strong analytical, writing, and organizational skills to synthesize complex information. The role requires a strong understanding of the federal acquisition process, FAR compliance, and Section L/M requirements, along with the ability to synthesize complex information into clear, persuasive narratives under tight deadlines. The ideal candidate is a highly organized, detail-oriented communicator with experience in federal proposals, market intelligence tools, and collaborative, high-tempo environments.

Your future duties and responsibilities:

Federal Acquisition and Compliance

• Demonstrated understanding of the federal acquisition process, FAR, and proposal compliance (including interpreting and implementing Section L/M requirements).

Tools and Technical Skills

• Proficiency with Microsoft Office (Word, PowerPoint, Excel, Teams) and Adobe Acrobat.
• Proficiency in Excel functions, formulas, and data visualization.
• Proficiency using federal research and procurement platforms (e.g., GovWin, SAM.gov, GSA eBuy, PIEE, OASIS+).

Core Competencies

• Ability to critically think, write and articulate in a coherent and logical manner.
• Strong written/verbal communication skills; comfortable briefing senior leadership.
• Strong writing, editing, and storytelling ability.
• Ability to consolidate massive amounts of disparate information.
• Highly organized with strong attention to detail; ability to manage multiple priorities and deadlines.
• Ability to perform in a fast-paced, high-pressure environment with strict deadlines.
• Professional, adaptable, and collaborative; maintains a positive “can-do” approach with humility.

Required qualifications to be successful in this role:

Education

• Bachelor’s degree or higher in a relevant discipline (e.g., Business, English, Marketing, Analytics, IT/Technical field).

Experience

• 5-7 years of experience in federal government contracting, including federal BD and proposal management/writing.

Security / Screening

• U.S. Citizenship required.
• Ability to pass background and drug screening.

Highly Desired / Preferred Qualifications and Experience:

Certifications

• APMP (Foundation or higher) and/or other relevant proposal/BD certifications.

Compliance / Cyber Framework Familiarity

• Knowledge of federal procurement cycles, contract vehicles (GSA, IDIQs), and DoD acquisition processes.

Proposal Production and Design Capabilities

• Knowledge of graphic design principles and advanced use of Adobe Acrobat Professional.
• Experience with graphic design tools (e.g., Adobe Creative Suite / Photoshop).

High-Tempo Delivery

• Experience managing multiple concurrent proposals under tight deadlines; ability to execute high-priority submissions with accuracy.

BD Analytics / Market Intelligence Depth

• Experience with federal contract analysis, monitoring, and tracking.
• Deep experience with GovWin (or similar market intelligence tools) for market research and opportunity tracking.
• Advanced Excel/business intelligence capability (e.g., dashboards, pivot tables, Power Automate).

What you can expect from us:

MANDEX, Inc has over 50 years of experience in all facets of information technology including systems engineering; systems testing; systems design and implementation; cybersecurity and information assurance; electronic and physical security; as well as logistics and warehousing.

MANDEX, Inc. is a collaborative, mission-driven organization where professional advancement, supportive leadership, and an inclusive culture are the core of everything we do! Come work with us!

Benefits we offer:

• Health insurance
• Vision insurance
• Dental insurance
• Paid time off
• Tuition reimbursement
• Employee assistance program
• Short-term disability
• Long-term disability
• Health savings account
• Flexible spending accounts
• Basic Life & Disability insurances
• Voluntary AD&D Insurance
• Voluntary Accident Insurance
• Voluntary Critical Illness Insurance
• 401(k) Retirement Plan (MANDEX, Inc offer pre-tax and post-tax Roth contributions, and match 100% of the first 6% elected contribution)

Additional Information

• Interview Round 1
• Interview Round 2
• Background Checks & Drug Screening
• Offer Letter
• Your NEXT big challenge begins

MANDEX, Inc. is an Equal Employment Opportunity employer and does not discriminate on the basis of race, national origin, gender, sexual orientation, disability, veterans’ status, age, or other legally protected status.

MANDEX Inc. reserves the right to perform background screening and drug testing prior to extending offers of employment.

MANDEX attracts and retains smart and motivated professionals in the government contracting industry. We offer competitive salaries and excellent benefits packages, including a matched 401(k) plan.