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Efrain Esteban Gonzalez MariñoEM
Open to opportunities

Efrain Esteban Gonzalez Mariño

@efrainestebangonzale

Procurement and strategic sourcing professional specializing in supplier negotiation, B2B growth, and high-impact deals.

Colombia
Message

What I'm looking for

I’m looking for a procurement/strategic sourcing role where I can negotiate with suppliers globally, improve cycle times through automation, and grow revenue via strong B2B development—backed by clear KPIs, cross-functional collaboration, and continuous improvement.

I’m an International Business professional with 5+ years of experience in international procurement, strategic sourcing, and B2B business development across Latin American and North American markets. I focus on identifying business opportunities, negotiating with suppliers, and closing high-impact deals end to end—from prospecting through execution.

At OZEOL International, I served as an International Buyer, identifying, evaluating, and negotiating with suppliers across Latin America, the U.S., and Canada for surplus inventory, closeouts, and opportunity products. I managed end-to-end procurement processes to optimize pricing, quality, and delivery timelines, and I ensured full traceability by administering supplier records in Selligent CDM (CRM). I also analyzed commercial proposals for an international team in France and implemented negotiation strategies that expanded the global sourcing network.

Previously, as a Business Analyst in the procurement area (Customer Intelligence Inc), I handled B2B supplier communication via email, phone, and virtual meetings to coordinate acquisitions and negotiate terms. I created detailed reports on supplier performance and procurement metrics using Excel and internal CRM tools, and I worked closely with finance, operations, and logistics to align purchases with cross-functional expectations. I also identified and implemented process improvements that reduced procurement cycle times and improved supplier responsiveness.

Earlier, as an International Purchasing Coordinator at STAR LOGISTICS S.A.S, I conducted sourcing and negotiation for aeronautical parts in North America, managed traceability and documentation, and supported representation in Colombia for private and government aviation sectors. I’ve also led teams of up to 6 people across commercial and administrative areas, aligning objectives and KPIs while executing efficiently under pressure and tight deadlines. I’m highly analytical and strategic in financial and commercial decision-making, using CRM platforms (HubSpot, Salesforce, Oracle, Selligent) and AI tools (ChatGPT, Gemini, Grok, DeepSeek, Antigravity, OpenClaw, among others) to automate workflows and scale results.

Experience

Work history, roles, and key accomplishments

OI

International Buyer

Ozeol International

Mar 2025 - Oct 2025 (7 months)

Sourced and negotiated suppliers across Latin America, the U.S., and Canada to acquire surplus inventory, closeouts, and opportunity products. Managed end-to-end purchasing processes and maintained supplier records in Selligent CDM to ensure pricing, quality, and delivery traceability.

OI

Supplier Prospector

Ozeol International

Jan 2023 - Nov 2023 (10 months)

Sourced and qualified inventory suppliers in LATAM, the U.S., and Canada for overstock and clearance goods. Conducted outbound outreach, maintained accurate supplier data in Selligent CDM, and supported deal closure for the France purchasing team by overcoming objections and building trust.

SS

International Purchasing Coordinator

Star Logistics S.A.S

Jun 2022 - Dec 2022 (6 months)

Conducted supplier sourcing and negotiation for aeronautical parts in North America. Managed traceability and documentation to support airworthiness standards and secured supplier representation in Colombia for private and government aviation sales.

Education

Degrees, certifications, and relevant coursework

SU

Santo Tomás University

Bachelor’s Degree in International Business, International Business (Marketing emphasis)

Earned a Bachelor’s degree in International Business with a marketing emphasis. Completed coursework aligned to international business and marketing-focused study.

SI

San Diego Campestre Educational Institute

High School Diploma, High School

Completed a High School Diploma program at San Diego Campestre Educational Institute. Graduation year provided as 2015.

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