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 & Education

  1. 2023 – now3 years 8 months

    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).

  2. 2021 – 20264 years 5 months

    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%.

  3. 20216 months

    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.

  4. 2019 – 20212 years

    Double Master’s Degree, Human-Computer Interaction & Design

    Université Paris-Saclay & Universidad Politécnica de Madrid

    EIT double-degree programme. Second-year specialization in Accessibility and Inclusive Design; minor in Innovation & Entrepreneurship.

  5. 20196 months

    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.

  6. 2016 – 20193 years

    Bachelor’s Degree, Interfaces and Communication Technologies

    Università degli Studi di Trento, Italy

    Final grade 110/110. Thesis: “Designer vs Stakeholder: Effectively Communicating Design Decisions”.

Languages

  • Italian

    Native

  • English

    Fluent (C2)

  • Spanish

    Fluent (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

1FIT · 2023–2024

Fitness Startup

1FIT

2023–2024

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

  • B2B2C
  • Redesign
  • Design system
  • iOS and web

1FIT is a fitness startup with a B2B2C model: it gives fitness coaches a web app to manage their clients’ fitness journey, and their clients an app to track their progress.

As the only designer, I conducted a full redesign of the clients’ iOS app, built a custom design system for iOS, and tailored IBM’s Carbon DS to the coaches’ web app, migrating the existing flows onto it.

  • App NPS before and after the redesign

    55 → 82

  • Feature build time with design system

    1–2 weeks

    3 weeks previous average

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

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

Workout Logger

Web app · 2026

I wanted to simplify my gym workouts: a tracker built around muscles, not routines

  • Product design
  • Web app
  • Design Engineering
  • 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.

See it live

Workout Logger · Web app · 2026

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

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Let’s talk

How can I help you?

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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

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Open to full-time/contract roles

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