AMPARO SIERRA
New Braunfels,TX
Summary
Experienced Purchasing Specialist with 19+ years dedicated to healthcare and administrative procurement. Skilled in full-cycle purchasing, vendor coordination, and contract management. Known for accuracy, responsiveness, and strong customer service. Proficiency in Microsoft Office and multiple procurement systems. Seasoned Purchasing Agent with a background in negotiating deals and managing supplier relationships. Demonstrated strengths include cost reduction, strategic sourcing, and contract management. Previous roles have led to improved operational efficiency, streamlined purchasing processes, and substantial savings on procurement budgets.
Overview
20
20
years of professional experience
1
1
Certification
Work History
Purchasing Agent
U.S. Army Health Contracting Activity
Fort Sam Houston, TX
02.2021 - Current
- Administered SAP contracts and supported Medical Training and Educational Service Agreements.
- Coordinated funding with DFAS and Resource Management to ensure compliance.
- Tracked closeouts and maintained documentation for accountability.
Purchasing Technician
Health Readiness Contracting Office
Fort Sam Houston, TX
08.2015 - 03.2021
- Processed MIPRs/PRs; supported contract closeouts and senior leadership scheduling
- Maintained ARIMS compliance and managed sensitive mail operations
Purchasing Agent
Western Regional Contracting Office
Lacey, WA
02.2011 - 08.2015
- Managed SAP purchases via BPAs, GPCs, and Purchase Orders
- Led pre-award documentation and vendor coordination; ensured timely deliveries
Purchasing Agent
VA Medical Center
Tacoma, WA
10.2008 - 02.2011
- Warranted Contracting Officer ($150K authority); cradle-to-grave contract execution
- Conducted market research and ensured FAR compliance
Purchasing Agent
Western Regional Contracting Office
Joint Base Lewis-McChord, WA
09.2006 - 10.2008
- Supported ACO with contract analysis, funding adjustments, and price evaluations
- Monitored CARs and reconciled government purchase card transactions
General Clerk II
Frontline Staffing Services
Bremerton, WA
02.2006 - 05.2006
- Processed purchase requests and contract closeouts; maintained procurement databases
Education
Business Administration Coursework -
Ashworth University
High School Diploma -
General H.H. Arnold High School
Skills
- Contract administration and vendor management
- SAP management
- Procurement processes and policies
- Budget management and tracking
- Logistics coordination
- Problem-solving and multitasking
- Adaptability and flexibility
- Relationship building
- Performance metrics
Certification
- Purchasing Level II & I – Defense Acquisition University
- Contracting Level I – Federal Acquisition Institute
Timeline
Purchasing Agent
U.S. Army Health Contracting Activity
02.2021 - Current
Purchasing Technician
Health Readiness Contracting Office
08.2015 - 03.2021
Purchasing Agent
Western Regional Contracting Office
02.2011 - 08.2015
Purchasing Agent
VA Medical Center
10.2008 - 02.2011
Purchasing Agent
Western Regional Contracting Office
09.2006 - 10.2008
General Clerk II
Frontline Staffing Services
02.2006 - 05.2006
Business Administration Coursework -
Ashworth University
High School Diploma -
General H.H. Arnold High School