About

Designer and product strategist.

Jhonatan Zacchi — Senior Product Designer based in London

Who

Based in London. Specialised in fintech and enterprise SaaS. I solve problems by starting with deep research, then designing the simplest possible solution.

How I work

I work closely with product and engineering to validate assumptions before building, because the fastest product is the one you didn't build.

What I've built

Six years building products. I've led discovery projects that uncovered why workflows were broken (and fixed one that had ballooned to 108 steps), designed a 0→1 multi-criteria alert system used by investment teams daily, and guided design system adoption across five squads.

Lately

Research-first approach has moved into AI. I vibe code GenAI prototypes with Claude Code and Lovable, because testing a real interaction beats describing one in a static mockup.

Personal

Outside work: training, photography, interior design obsessions.

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Experience

Experience overview

  • Omnicom Product Designer → Senior Product Designer 2022 — Present
  • Engine AI Product Designer 2021 — 2022
  • Wunderman Thompson UI Designer (Contract) 2021
  • Freelance Product Designer 2020 — 2021

Skill Set

How I work

  • Product & UX/UIStrategic product design, complex SaaS workflows, fintech and regulated products, design systems architecture.
  • Discovery & ResearchUser research, discovery workshops, usability testing, rapid prototyping, iterative validation.
  • AI & Rapid PrototypingVibe coding with Claude Code and Lovable, GenAI interaction patterns, prototyping to test intent over static mockups.
  • Systems ThinkingDesign systems at scale, multi-brand theming, accessibility standards, design tokens, governance.
  • Core StrengthsDesign systems governance, fintech UX patterns, stakeholder alignment, handoff quality.