About Guillem
English
Native or bilingual
Spanish
Native or bilingual
Catalan
Native or bilingual
Experience
- REUSALIATechnical FounderApril 2023 - Today (3 years and 2 months)Founded and scaled a physical e-commerce operation supported by custom engineering. Lead a 5-person team (warehouse, logistics, admin) - hiring, scheduling, train- ing, accountability - while building the technical back- bone used daily across inventory, orders, and fulfillment. . Built a production ERP from scratch covering inventory, order flow, pricing, listings, invoicing, and warehouse execution.• · Designed custom data pipelines to keep operational data synchronized, auditable, and decision-ready across marketplaces.• · Reverse-engineered private marketplace behavior to automate workflows where no official integration existed.• · Integrated LLM workflows for product enrichment, categorization, and publishing consistency across thousands of SKUs.• · Rebuilt from fragile tools into robust architecture after a natural disaster damaged warehouse operations, inventory, and equipment.
- LittleBig ConnectionSenior Software EngineerDecember 2022 - February 2024 (1 year and 2 months)Delivered enterprise-grade software across backend and frontend, with focus on secure APIs, maintainable archi-tecture, and production deployment reliability.
- Sopra Steria (AIRBUS)EngineerMarch 2022 - December 2022 (9 months)Contributed to large-scale enterprise modernization: ser- vice decoupling, state management improvements, and CI/CD in managed cloud environments.
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Education
- B.Eng. Multimedia EngineeringUniversitat de València2021B.Eng. Multimedia Engineering