Selected clients
Cofidis, Nexi, PayPal, Sephora, Samsung, Médecins Sans Frontières, World Economic Forum, Sellix, Prometeia
Agencies I’ve collaborated with
Work
Freelance · Product / Data Visualization Designer (Nov 2024–present)
Supporting companies and agencies across research, prototyping, and launch of digital products with a strong data visualization component. Selected clients: Cofidis (design system, web portals, digital archives), Safyiaa, Shippix, Sellix.
Accurat · Product Design Specialist (Feb 2025–present)
Research, design, and delivery of data-driven digital products in finance and economics — translating complex datasets into operational interfaces, design systems, and visual metaphors. Clients include PayPal, World Economic Forum, Nexi, and Black Knight.
Oblo · Experience / Information Designer (May 2021–Nov 2024)
Service design across digital touchpoints — turning user research and strategic requirements into service flows, prototypes, and interfaces for multidisciplinary teams. Clients include Samsung, Prometeia, Médecins Sans Frontières, WEP, Talent Garden, Edenred, and EWO.
Music Innovation Hub · Graphic Design Intern (2020)
Graphic design for online music events and virtual concerts during the Covid period.
Teaching
2025–26 · Adjunct professor, Storytelling and Visual Narratives (2 editions) — Domus Academy, MA Interaction Design
2025 · Adjunct professor, Data Visualisation Narratives — Università degli Studi di Milano (Statale), MA Data Science
2026 · Guest lecturer, Visualizing Texts: Data Visualization and AI in the Digital Humanities — Università Cattolica, Milan
2025 · Masterclass co-facilitator, Designing regeneration in inner areas: service design and collaborative strategies — Marchingegno & PoliArte, Ancona
2023–25 · Teaching assistant, Laboratorio di Sistemi per l’Interazione (3 editions) — Politecnico di Milano, MA Communication Design
2024–25 · Thesis co-supervisor — Politecnico di Milano, MA Communication Design
2023–24 · Teaching assistant, Storytelling and Visual Narratives (2 editions) — Domus Academy
2023 · Data visualisation tutor — Digital Methods Summer School, University of Amsterdam
2022 · Guest lecturer, Service Design workshop — SPD Scuola Politecnica di Design, Milan
Publications & talks
Sironi, J. (2023). Service Blueprint System: a collaborative tool for process visualisation. In N. Ceccarelli (Ed.), 2CO3: Communicating Complexity. Franco Angeli.
2023 · Service Design meets Data Visualisation — Oblo SDM, Milan (with Serena Talento)
2023 · How visualisations can foster collaborative workflows for the redesign of complex systems — ISVIS, Tel Aviv (with Serena Talento)
2022 · Adaptive visualisations for complex processes — 2CO Communicating Complexity Conference, Alghero
2022 · Service Blueprint System: a collaborative tool for process visualisation — Tangity Open Seed, Milan
Exhibitions & projects
2024 · ADI Design Index selection — Organizational Management Strategies (with Oblo), ADI Museo del Compasso d’Oro
2022 · Exhibition — Projections, Oblo Space, Milan
2021 · Installation — sòno, confined space, BASE Milan (Politecnico di Milano, Sintesi Triennale)
2015 · Finalist, Sony World Photography Awards (Youth, Environment) — Somerset House, London