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Jhon Sierra

@jhonsierra

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I manage compliant procurement, logistics, assets, and field operations for humanitarian programs.

Colombia

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What I'm looking for

I'm looking for a logistics, procurement, or administrative role supporting field operations, with opportunities to coordinate suppliers, assets, inventory, travel, and compliant procurement. I'm available to relocate to Ocaña and travel to Catatumbo or other locations as required.

I've managed procurement, supply, and field logistics for Mercy Corps Colombia, DRC Integration, The HALO Trust, FAO, and other operational organizations supporting humanitarian and agricultural projects.

At DRC Integration, I led procurement, contracting, travel, inventory, asset control, and a 24-vehicle fleet for humanitarian demining, achieving 100% audit compliance and improving logistics resource efficiency by approximately 30%.

I combine supplier management, document control, payment tracking, and field coordination using SAP/ProSource, Dynamics, SharePoint, and Excel. I'm available to relocate to Ocaña and travel to Catatumbo or other required locations.

Experience

Work history, roles, and key accomplishments

Logistics and Procurement Officer

Mercy Corps Colombia

Aug 2025 - Jun 2026 (10 months)

Managed procurement and supplies for agricultural production projects in Catatumbo, coordinating deliveries with program teams, suppliers, security, operations and finance. Prepared and tracked requisitions, quotations, purchase orders, NBR, formal records and delivery documentation in SAP/ProSource, SharePoint and Excel.

Procurement Supply Chain SAP Pro Source SharePoint Excel Supplier Management Invoicing Payment Tracking Logistics Coordination

Supply Chain and Procurement Officer

DRC Integration

Jul 2022 - Mar 2025 (2 years 8 months)

Led procurement, contracting and logistics for humanitarian demining under donor regulations, achieving 100% compliance in audits. Managed requisitions, supplier registration, quotations, comparative analyses and invoice documentation for payment processing.

Procurement Contracting Logistics Donor Regulations Audit Compliance Supplier Management Invoicing Inventory Management Fleet Management Travel Coordination

Logistics and Procurement Officer

The HALO Trust

Dec 2019 - Feb 2020 (2 months)

Coordinated procurement, critical materials and safety equipment to maintain continuity of humanitarian demining operations. Implemented document tracking that increased the efficiency of internal reviews and audits by approximately 40%.

Procurement Logistics Document Control Audit Safety Equipment Humanitarian Operations

Logistics and Procurement Coordinator

Syma Técnica SAS

Jan 2019 - Nov 2019 (10 months)

Managed procurement, suppliers, transportation, inventory and operational staff for social and agricultural production projects. Implemented quality controls that increased document traceability to 95% and supported delivery coordination with institutional funders.

Procurement Supplier Management Transportation Inventory Management Quality Control Documentation And Traceability Project Coordination

Administrative Technician

FAO

Mar 2018 - Dec 2018 (9 months)

Organized case files, records and resources for over 500 beneficiaries in land titling processes with Colombia's National Land Agency. Coordinated administrative controls and continuity of field activities with institutional stakeholders and field teams.

Administrative Support Document Management Records Management Stakeholder Coordination Field Operations

Buyer

SAExploration

Aug 2016 - Dec 2016 (4 months)

Managed suppliers and the import and distribution of technical equipment for seismic operations, reducing delivery times by approximately 20%. Applied document, invoicing and supply controls in areas with limited logistics infrastructure.

Procurement Supplier Management Import Distribution Logistics Invoicing Document Control

Logistics Coordinator

Conequipos

Dec 2015 - May 2016 (5 months)

Coordinated fleet operations, drivers, maintenance, spare parts, and machinery deliveries and collections for rental operations. Updated inventory and equipment availability to improve responses to internal and external requests.

Fleet Management Logistics Coordination Maintenance Inventory Management Equipment Rental

Procurement, Warehousing and Logistics Operations

Geokinetics / Vector Geophysical / Grant Geophysical

Jan 2002 - Dec 2014 (12 years 11 months)

Managed procurement, warehouses, inventory, suppliers and transportation for multi-site operations. Coordinated ground and helicopter supply deliveries to camps in hard-to-reach areas.

Procurement Warehousing Inventory Management Supplier Management Transportation Logistics Operations