Hey!,
I'm Jai
Senior product designer, based in Germany. Thirteen years on marketplaces, platforms, and SaaS products, focused on making the complicated parts invisible to the people who use them.
Six projects. I defined the problem, set the direction, and owned the outcome.
Checkout Unification
I ran the audit myself to prove unification was worth it. Mapped 23 divergence points across three surfaces and set the direction: one system, predictable behavior, no silent edge-case failures.
B2B eSIM Platform
Before a single wireframe, I ran stakeholder workshops with sales, finance, and legal to define the object model. Then I built the entire platform solo: roles, permissions, billing, reporting. Shipped to three reference clients across different industries.
Plans Lifecycle
5 lifecycle stages redesigned so each action was obvious at the right time.
Seller Photo Moderation
I pushed back on the brief. The real problem wasn’t the copy. It was that the system knew things the seller couldn’t see. Redesigned from information architecture up, across 100M+ users.
Photo Studio
I had already mapped the correction problem with PQT. Photo Studio was where that map became a product. I designed the editor flow for web and mobile: white background removal, resolution upscaling, watermark detection, in 2 taps, without the seller ever leaving the platform. The team shipped it after I left.
MedEspañol
Built from zero: a health navigation platform for Spanish speakers in Germany. AI-assisted triage, Arztbrief interpretation, doctor video consultations. Designed, shipped, and running in production at medespanol.org.
Jairo Alvarez designs where
marketplaces,systems,constraints,platforms,trust,
product, and data meet.
Product designer and builder with 13 years across banking, e-commerce, music streaming, advertising, and B2B SaaS. I own the full design cycle: discovery, research, information architecture, interaction design, and staying through ship to close the gap between spec and what actually lands in production.
I’ve led design at Davivienda (banking), Mercado Libre (e-commerce, 218M users), Deezer (streaming), McCann (advertising), and a global travel tech provider (B2B SaaS, 190+ markets). The work spans checkout architectures, subscription systems, loyalty flows, enterprise admin platforms, and AI-powered consumer editors.
My AI practice runs at two layers. At the design layer: Gemini for rapid heuristic evaluation and behavioral persona simulation to de-risk discovery before committing direction; Claude for WCAG 2.1 accessibility auditing and structured decision validation before every engineering handoff. At the build layer: Anthropic SDK integrated into production architecture, DSGVO Zero Data Retention enforced at the API level. Most recently in MedEspañol, a healthcare platform I founded and shipped end-to-end in five weeks without an engineering team.
Based in Hannover, Germany. Work permit, no sponsorship. Available immediately.