Giona FossatiProduct Designer

I turn complex tools and messy data into products people can actually use.

I’ve spent 5+ years across enterprise retail tools and early-stage startups.

Services

How can I help you?

Pick the situation closest to yours.

  • The service that fits you

    Design partner

    I join as your designer and handle the design from the first sketches to launch, working directly with your developers.

    First step

    A call about your product and what matters most right now.

    Book a meeting
  • The service that fits you

    Audit and design system

    I find what's making the product hard to use and what to fix first. Then I build a design system that keeps it consistent as you grow.

    First step

    The audit, a fixed-scope project, so you know exactly what you'll get.

    Book a meeting
  • The service that fits you

    Working prototype

    I design the idea and build a working version with real data, so you can test it with users or investors before you commit to development.

    First step

    Agreeing on what the prototype needs to prove.

    Book a meeting
  • The service that fits you

    Extra capacity

    I join your team for a project or a busy period, using your tools and your process. White-label is fine.

    First step

    A look at the brief and your timeline.

    Book a meeting

Something else in mind? Book a meeting and we'll talk it through.

Selected Work

Recent work. Full case studies, including the retail analytics project, available on request.

Multinational Retail Company

X Redbility

2021–2026

Turning scattered data into daily decisions for distribution teams.

Analysts made daily decisions by piecing together data from four separate sources. I mapped their journeys, identified the flows that mattered most, and designed dashboards that adapt to their changing goals across the week.

I was the only designer on the project, working with business teams and 50+ developers across 5+ internal tools.

  • Time spent on weekly review

    −25%

  • Replaced 4 or more Excel files with 1 dashboard
A service blueprint mapping the weekly planning cycle, with each task annotated by the pain points and ideas raised in research.

Request the full case study about Turning scattered data into daily decisions for distribution teams.

Fitness Startup

2023–2025

From UX audit to a redesigned app and a design system for iOS and web.

1FIT is a fitness startup with a B2B2C model, which lets fitness coaches give their clients an app to track their progress.

I started with a UX audit of the iOS app: its main action, logging daily data, was buried two or three levels deep, and the app had no clear primary goal.

As lead designer, I redesigned the client app around daily logging and coach feedback, built a custom design system for iOS, and tailored IBM’s Carbon to the coaches’ web app, migrating the existing screens onto it.

  • Core issues found in the UX Audit

    9

  • Feature build time with design system

    1–2 weeks

    3 weeks previous average

The redesigned iOS client app, showing daily logging for sleep, meals, calories and workouts on a single screen.
Logging cards from the design system — sleep duration, a logged meal with macros, a calorie ring against target, and the next workout with steps and cardio progress.
The coaches’ web app, showing a client’s training phases with weekly bodyweight, calorie, step and cardio targets.
The coaches’ web app overview, listing programme phases and their completion status.

Request the full case study about From UX audit to a redesigned app and a design system for iOS and web.

Workout Logger

Side project · 2026

A workout tracker built around muscles, not routines

Most fitness apps assume you follow a fixed plan. I designed Workout Logger for people who train what they feel like: pick a muscle group, tap to log a set, done. It tracks weekly sets per muscle and suggests what to train today based on recovery.

I built it with Claude Code on Supabase and Vercel: a live product with accounts, real data, offline support, in English and Italian. It’s the same way I build working prototypes for clients.

See it live (opens in a new tab)

Get in touch, book a call.

Open to full-time/contract roles

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