Proposal writer Jobs in St Louis, MO

Contracts Manager – National Solutions

Are you ready to apply your contracts expertise to some of the Intelligence Community's most critical missions? Leidos is seeking an experienced Contracts Manager to support our National Solutions Business Area within the Intelligence Sector. This is an exciting opportunity to partner with business leaders, program teams, and Intelligence Community customers to deliver innovative solutions that strengthen national security.

The preferred location for this position is Chantilly, VA, with St. Louis, MO also being an acceptable work location.

Why This Role Matters

As a Contracts Manager, you will play a key role in supporting a diverse portfolio of Intelligence Community programs and captures. You will serve as a trusted business partner, providing strategic contractual guidance throughout the entire contract lifecycle—from proposal development through contract negotiation, administration, and closeout.

You will work closely with program management, business development, finance, legal, procurement, and executive leadership to help drive mission success while ensuring compliance with company policies and government regulations.

What Makes This Opportunity Unique

• Mission Impact: Support programs and initiatives that directly contribute to U.S. national security and Intelligence Community objectives.
• Strategic Partnership: Collaborate with business leaders and program teams to shape acquisition strategies and contractual approaches.
• Complex Challenges: Manage a portfolio of sophisticated government contracts across multiple contract types and customers.
• Professional Growth: Expand your expertise while working alongside experienced contracts professionals and business leaders.
• Innovation and Collaboration: Help drive effective business solutions in a dynamic and fast-paced environment.

Primary Responsibilities

As a Contracts Manager, you will serve as a strategic business partner to program managers, capture leaders, and senior business leadership for a portfolio of Intelligence Community programs and pursuits. Beyond contract administration, you will provide thoughtful contractual guidance that helps leaders make informed business decisions, manage risk, strengthen customer relationships, and pursue growth opportunities with confidence.

Success in this role requires balancing mission objectives, customer expectations, regulatory compliance, and business goals. You will be expected to anticipate contractual challenges, identify creative and compliant solutions, and influence outcomes through collaboration with internal stakeholders and government customers. The ideal candidate is someone who can translate complex contractual issues into practical business advice and become a trusted advisor to both leadership and program teams.

Key responsibilities include:

• Serve as the primary contractual advisor to assigned programs, captures, and business leaders.
• Provide strategic guidance on contractual risk, compliance, negotiation strategies, and business decision-making.
• Support growth initiatives by advising capture and proposal teams on acquisition strategies, solicitation requirements, and contractual approaches.
• Lead negotiations and administration of contracts, modifications, teaming agreements, non-disclosure agreements, and other business arrangements.
• Build and maintain strong working relationships with government customers, industry partners, and internal stakeholders.
• Partner with Program Management, Business Development, Finance, Legal, and Supply Chain teams to resolve complex contractual matters and achieve business objectives.
• Ensure compliance with applicable contractual requirements, company policies, FAR/DFARS regulations, and customer-specific acquisition policies.
• Identify opportunities to improve processes, mitigate risk, and enhance overall business performance across the portfolio.

What You Bring

• Educational Foundation: Requires a BA degree and 8+ years of relevant experience, or Master's degree with 6+ years of relevant experience.
• Contracts Expertise: Demonstrated experience providing cradle-to-grave contract administration and management support for U.S. Government contracts, subcontracts, and proposal support including experience with a variety contract types, advanced knowledge of FAR/DFAR and the emerging Federal acquisition environment.
• Leadership Excellence: Must be able to appropriately prioritize work activities and have experience leading the review and analysis of RFP's, the preparation of compliant and complete Contracts Volumes, and OCI Plans. Strong analytical, negotiation, communication, and presentation skills.
• Agility & Collaboration: Proven ability to work in fast-paced environment and manage multiple priorities and demonstrated success in identifying and managing risks in support of achievement of business goals. Candidate will spend time co-located with program teams supported.
• Negotiation Mastery: Strategic thinker with advanced-level skills in complex terms and conditions negotiations.
• Security Clearance: Experience supporting Intelligence Community customers and programs and an active Top Secret/SCI with CIpolygraph required.

Preferred Qualifications

Candidates with one or more of the following qualifications are strongly preferred:

• Experience supporting Intelligence Community agencies, programs, and acquisition organizations.
• Knowledge of IC-specific acquisition regulations, policies, and contracting practices.
• Formal contracts training, certification, or professional development coursework (NCMA, CPCM, CFCM, or equivalent).
• Experience supporting large captures, strategic pursuits, and proposal efforts.
• Demonstrated success negotiating complex contractual issues and business agreements.
• Experience working in highly classified environments and supporting sensitive national security programs.

Ready to Make an Impact?

Join Leidos and become part of a team that delivers innovative solutions to some of the nation's most important security challenges. You'll have the opportunity to work alongside exceptional professionals, support critical Intelligence Community missions, and grow your career in one of the most dynamic areas of government contracting.

Your expertise can help shape the future of national security—apply today.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

October 2, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $92,300.00 - $166,850.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.