Open To Work
Sheila Tollens Rivera
Contract Specialist
Cinnaminson,NJ
Work Preference
Summary
Senior contract management professional with over 18 years of experience in handling complex contracts within regulated sectors. Skilled in contract review, negotiation, risk mitigation, pricing analysis, and cross-functional collaboration. Demonstrated ability to identify risks, resolve discrepancies, and align terms with organizational goals while ensuring compliance and documentation integrity. Aiming to leverage contract lifecycle expertise in a dynamic, revenue-focused commercial setting.
Overview
19
19
years of professional experience
1
1
Certification
Work History
Contract Specialist / Contract Manager
Environmental Protection Agency (EPA)
Philadelphia, USA
01.2024 - Current
- Manage 14+ active task orders supporting environmental and engineering programs.
- Review and execute contract modifications valued up to $14M, ensuring funding accuracy, scope alignment, and regulatory compliance.
- Analyze contractual language to identify discrepancies, financial risks, and performance concerns; coordinate resolution with legal and finance stakeholders.
- Serve as primary liaison between program teams, legal counsel, and contractors to clarify terms and facilitate negotiated solutions.
- Maintain complete, audit-ready contract files ensuring visibility and lifecycle traceability.
Contracting Officer / Contract Specialist
Defense Logistics Agency (DLA)
Philadelphia, USA
01.2007 - 01.2024
- Managed full contract lifecycle for services, construction, commercial items, and IDIQ contracts.
- Negotiated pricing, scope adjustments, equitable modifications, and contract terms to align vendor performance with mission objectives.
- Conducted cost and price analyses to assess financial risk and determine price reasonableness.
- Administered 466+ delivery orders valued from $15K to $1M while maintaining less than 5% post-award modification rate.
- Reviewed non-standard provisions and recommended risk mitigation strategies.
- Collaborated with finance, program leadership, and legal advisors to resolve contractual disputes and performance issues.
- Developed acquisition strategies and standardized documentation to improve efficiency and consistency.
- Earned Outstanding Performance Rating (2024) with consistently high warrant review scores.
Education
BBA - Accounting And Finance
University of Puerto Rico
Puerto Rico01-2006
Skills
- Contract review and redlining
- Risk identification and mitigation
- Negotiation and dispute resolution
- Contract lifecycle management
- Cross-functional collaboration
- Pricing and cost analysis
- Vendor management
- Process improvement
- Regulatory compliance
- Microsoft Office proficiency
Certification
- FAC-C Professional Certification
- DAWIA Level II Contracting Officer
- Simplified Acquisition Warrant ($250K)
Languages
English
Proficient (C2)
C2
Spanish
Proficient (C2)
C2
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Timeline
Contract Specialist / Contract Manager
Environmental Protection Agency (EPA)
01.2024 - Current
Contracting Officer / Contract Specialist
Defense Logistics Agency (DLA)
01.2007 - 01.2024
BBA - Accounting And Finance
University of Puerto Rico