Witness: a cross-platform tool for civilians and professional investigators.
Designing both a mobile app that’s easy to use in an emergency and a professional interface for handling sensitive data.
- Role
- Product Designer, UX UI Designer
- Client
- Witness · independent investigative NGO and media, Paris
- Deliverables
- Mobile app + desktop dashboard
- Year
- 2026
In 30 seconds, if you’re in a hurry
The CEO of Witness, an independent investigative NGO, wants a two-sided tool: for civilians and for its investigators.
An intuitive mobile app for emergencies, and a professional dashboard to handle large volumes of sensitive data.
Two tested prototypes (app and desktop), an accessible design system and a beta-tester community.
The context
The CEO of Witness NGO, a non-profit independent investigative organisation and media outlet based in Paris, asked me to create a two-sided tool: a mobile app for civilians, and a desktop dashboard for Witness investigators, who handle large amounts of sensitive data.
The goal
Create an intuitive, smooth mobile app that’s simple to use in an emergency, along with a professional interface for investigators handling large volumes of sensitive data.
My role & approach
Product Designer and UX UI Designer.
Frame
- Briefing, research and project scoping
- Understanding business needs, reading and research
Understand
- 5 interviews with civilians
- 3 interviews with researchers and professional investigators
- Targeted desk research
Design
- Information hierarchy and feature prioritisation
- Mobile and desktop wireframes
- Design system and design tokens, aligned with the brand and accessibility needs
- High-fidelity prototypes
Ship & test
- Technical specs and screen handoff
- 5 user tests on the mobile app and dashboard
Key figures
The outcome
- A viable project addressing current, systemic issues
- A meaningful project answering a real professional and social need
- A consistent, accessible design system
- Clear, intuitive user journeys
- Users interviewed and onboarded within weeks: a beta-tester community
What I took away
- Meet users’ needs in the field, in direct contact with them
- Look at a project as a whole, at a systemic level
- The value of agile project management
- Work with dev and tech teams as early as possible