At A2 CONTRATISTA, I prepare quantity takeoffs, cost analyses, and bid packages for structural steel, welding, civil, mechanical, and natural-gas projects. I check independent cost calculations against supplier and subcontractor quotations and participate in public and private tenders, including PEMEX tender processes.
At A2 COMERCIO, I coordinate international sourcing through final delivery. Earlier, at HR INGENIERÍA Y SERVICIOS, I managed B2B negotiations for natural-gas networks and installations, secured the Gas Natural Fenosa account, and supported regional expansion.

