# Jonathan Chambers > Senior UI/UX Product Designer | AI, SaaS & Platform Design | UX Strategy, Design Systems, Zero-to-One Products | Sanofi, ex-GetYourGuide, ex-Alpakas Location: Barcelona, Catalonia, Spain Profile: https://flows.cv/jonathanchambers I’m a Senior UI/UX Product Designer with 10+ years of experience leading UX strategy, product strategy, and scalable design systems across AI-powered tools, SaaS platforms, and mobile applications.I specialize in turning complex workflows into intuitive, high-performing products that drive adoption, accelerate delivery, and scale across organizations. My work spans zero-to-one MVPs, enterprise platforms, AI internal tools, and high-traffic consumer products.Over the past decade, I’ve partnered closely with Product, Engineering, Data, and Executive stakeholders to: • Lead end-to-end UX strategy and product design• Build Figma-based design systems and component libraries • Drive user research, usability testing, and data-informed design • Ship AI-powered tools used at scale• Improve conversion, adoption, and operational efficiency Recent highlights include: • Designing 5 AI-powered tools at Sanofi, reducing document creation time by 80% • Increasing review completion by 65% at GetYourGuide • Scaling community reach from 900 to 35,000+ users at Climate HourI’m strongest in environments where product strategy, technical complexity, and human-centered design intersect. 📍 Barcelona | Open to EU & US remote 💬 Languages: French (Native), English (C2), Spanish (B2) 🔗 Portfolio: http://jonathan.design Always happy to connect with product leaders, founders, and design teams building meaningful products. ## Work Experience ### Senior UI/UX Product Designer @ Sanofi Jan 2023 – Present | Barcelona • Led end-to-end UX strategy and product design for five AI-powered internal tools, establishing scalable design systems and reusable UX patterns adopted across multiple product teams. • Reduced document creation time by up to 80% through workflow redesign and automation. • Planned and executed biweekly user research and usability testing with medical writers, achieving 100% pilot adoption within the first month. • Designed and shipped 11 production-ready features using Figma, interactive prototyping, and accessibility-aware design. • Built a self-service component library to accelerate future AI product delivery across teams. ### Senior UI/UX Product Designer @ GetYourGuide Jan 2023 – Jan 2023 | Berlin, Germany • Co-led UX strategy and end-to-end redesign of the reviews experience using information architecture, interaction design, and prototyping. • Increased review completion rates by 65% through a photo-first, story-driven experience. • Partnered with Product Managers, Engineers, and key stakeholders in an Agile/Scrum environment to accelerate roadmap execution. ### Founding UI/UX Product Designer @ alpakas Jan 2022 – Jan 2023 | Berlin, Germany • Owned the full product design lifecycle including UX research, product strategy, wireframing, high-fidelity UI design, prototyping, and developer handoff. • Built and scaled a Figma-based design system and component library, reducing design-to-development handoff time by 25–30%. • Led cross-functional collaboration with CX, Product Management, and Customer Care to ship high-impact, user-driven product improvements. ### Founding UI/UX Product Designer @ Climate Hour Jan 2021 – Jan 2022 | Berlin, Germany • Partnered with grassroots organizations and social justice stakeholders to design and launch zero-to-one MVPs using lean UX and user-centered design. • Designed and executed a content and social media strategy, growing platform reach from 900 to over 35,000 users per publication. • Worked directly with founders on product strategy, business strategy, and fundraising storytelling supporting investor pitches. ### UI/UX Product Designer @ Vivy Jan 2020 – Jan 2021 | Berlin, Germany • Built a Design System from scratch for both Android and iOS eco-systems in Figma • Designed features for both Android and iOS from initial concept to delivery • Improved work processes within the Design Team as well as with Product Managers and Engineers • Provided designs for landing pages and pitch deck presentations ### UI/UX Product Designer @ homify Jan 2019 – Jan 2020 | Berlin, Germany • Designed features for both mobile apps and website from concept to delivery • Built Design Systems from scratch for both mobile apps and desktop in Sketch • Documented features for the engineer and core business teams • Produced visual marketing elements for social media and print ### Product Owner @ SmartAngels Jan 2016 – Jan 2017 | Région de Paris, France • Worked closely with the design team to provide the best user-friendly/implementation-effort ratio • Organised and animated SCRUM rituals (daily stand-ups, plannings, retrospectives) • Prepared sprints (backlog refinement, prioritising needs, writing specs) • Documented features and made sure all teams received all needed information. ### UI/UX Product Designer @ SmartAngels Jan 2015 – Jan 2016 | Région de Paris, France • Designed features from concept to delivery for desktop and mobile • Built a design system from scratch in Sketch • Produced all visual elements for social media communication and newsletter marketing • Created all visuals for print purposes ## Education ### Master's degree in Digital Communication Manager IIM Digital School ### Erasmus Program - 1 term in Photography University for the Creative Arts ### Bachelor's degree in Fine and Studio Arts Ecole supérieure d'art et de design de Valenciennes ## Contact & Social - LinkedIn: https://linkedin.com/in/jonthedesigner - Portfolio: https://jonathan.design --- Source: https://flows.cv/jonathanchambers JSON Resume: https://flows.cv/jonathanchambers/resume.json Last updated: 2026-03-31