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.

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I’m Giona Fossati

Product Designer
From Verona, based in Madrid.

Work

  • UX/UI Designer

    Freelance

    Helping tech companies at different growth stages design their products and build design systems. Clients include The LightupHub (ed-tech, 15,000+ monthly subscribers), 1FIT (UX audit and redesign of the native and web fitness apps) and DanceHive (a sharing platform for dancers, first 2,000 active users).

    Apr 2023 – Present

  • UX Consultant

    Redbility, for Inditex

    Sole designer on 5+ digital solutions, supporting 50+ developers. Designed a unified sales analytics platform integrating 4+ data sources; one dashboard replaced 4+ Excel files and cut the weekly review time by 25%.

    Sep 2021 – Jan 2026

  • Product Designer Intern, Accessibility

    Smarterp (SaaS), for Kunveno

    Integrated automatic speech recognition into the product strategy of a computer-assisted interpretation tool, ran design workshops with interpreters and delivered an MVP validated through user testing.

    Jan – Jun 2021

  • UX Designer Intern

    Belka, Design Agency

    Reduced onboarding churn by 20% for Italy’s leading invoicing platform by redesigning the experience, and redesigned a social platform and defined its growth strategy.

    2019

Education

Languages

  • Italian

    Native

  • English

    Proficient (C2)

  • Spanish

    Proficient (C2)

  • French

    Basic (B1)

Certifications

Skills

  • SaaS and app design
  • Design systems
  • Data visualization
  • Accessibility (WCAG)
  • Research and testing
  • Interaction design
  • Visual design
  • Wireframing
  • Prototyping
  • User-centred thinking
  • Feedback iteration
  • Stakeholder communication
  • Engineering literacy
  • Agile teams
  • Figma
SmarTerp’s interface for remote interpreters: the conference, live term suggestions, the chat and the soft console in one screen.

Kunveno · 2021

Interpreting software

Kunveno

2021

SmarTerp: design of an interface for a highly cognitively demanding situation, simultaneous interpretation.

  • Product design
  • User research
  • Usability testing
  • Live event interface
  • Time-sensitive tasks

SmarTerp is a computer-assisted interpreting tool for Kunveno: it gives simultaneous interpreters automatic speech recognition while they work remotely.

I led the product design as an intern focused on accessibility: interviews with ten interpreters, a contextual inquiry in the booths, and the interface tested with a ProtoPie prototype.

  • Mean SUS score in usability tests

    90.5

  • Mean ease rating per task

    6.5 / 7

SmarTerp’s interface for remote interpreters: the conference, live term suggestions, the chat and the soft console in one screen.

Read the case study

2021–2026

Multinational Retail Company

X Redbility

2021–2026

Placing the bets: how Zara’s product managers decide what goes in front of customers twice a week.

  • Enterprise tool
  • Retail operations
  • Approval workflows
  • Data-dense UI

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%

A service blueprint mapping the weekly planning cycle, with each task annotated by the pain points and ideas raised in research.

Read the case studyRead the case study

The coaches’ web app, showing a client’s training phases with weekly bodyweight, calorie, step and cardio targets.The redesigned iOS client app, showing daily logging for sleep, meals, calories and workouts on a single screen.

1FIT · 2023–2025

Fitness Startup

1FIT

2023–2025

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

  • B2B2C
  • UX audit
  • Redesign
  • Design system
  • 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.

Case study coming soon

How research changed the product.

Four projects where I ran the research myself and it changed a product decision. In most of them there was no research team, so the method had to fit the time and the people I could reach.

Inditex · 2021–2026

I polled about 35 analysts on four versions of the same sales chart

LightupHub · 2026

I coded students’ open answers into themes and crossed them with how easy they found the app

Abako · 2026

I ran five think-aloud sessions across a whole project, from posting it to getting paid

SmarTerp · 2021

I observed, interviewed and tested interpreters to design how they hand over the microphone

Read articleRead article

Workout Logger

Web app · 2026

A workout tracker built around muscles, not routines

  • Product design
  • Web app
  • Built with Claude Code
  • Live product

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

Workout Logger · Web app · 2026

Let’s talk

How can I help you?

Pick the one closest to you and see how I’d help.

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.

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

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

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.

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.

The service that fits you

Something else

Need something smaller or different? I also take on focused projects.

How I’d help

Book a call

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Open to full-time/contract roles

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This case study is private

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