Portfolio
Una mirada más cercana a proyectos que he liderado o en los que he contribuido de forma significativa — los retos, decisiones y resultados detrás del código.
2023 — 2025
Full-Stack Engineer · Aug 2023 – Feb 2025
B2B SaaS loyalty & ecommerce engine for 4,000+ US medspa clinics. I owned the promotions, rewards, discount, and membership lifecycle code.
Order-of-magnitude perf win · Resilient memberships · BDD-first testing
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2022 — 2023
Senior Software Engineer (Contractor) · Feb 2022 – Jul 2023
Built the web app of a Spanish energy-flexibility SaaS from absolute scratch — only the backend API existed at the start. Stayed through eighteen months of feature work covering aggregator, energy-community and end-customer surfaces.
Domain-first architecture · Reusable chart engine · Single-flight requests
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