
About me
Product Designer, based in Paris.
I'm Sarah, a Product Designer with 5 years of experience. At Mobsuccess I'm the only designer on my team: I cut drop-off on the core flow by 28% and shipped an AI assistant to every user, validating each use case with real users. Before that, five client products at an agency and a consumer iOS app. Next, I want to design apps people use in their everyday lives, full-time.
- 5 yearsin product design
- −28%drop-off on the core flow
- 5client products at an agency
- 2languages · FR · EN
How I use AI
How AI fits into my everyday work:
Making sense of research
I use Claude to sort through interview notes faster, so I spend my time on what they mean.
Prototyping
When a static mockup can't show how something feels, I build a quick working prototype in code.
Writing
I draft interface copy and cut it down until every line is clear and short.
A second opinion
I ask it to challenge my design choices before I show them to the team.
"If a design needs explaining, it isn't done yet."
Experience
- 2024
Mobsuccess Group
NowProduct Designer · Full-time · Hybrid
Sept 2024 — today
ContextOnly designer on my team · 8 engineers · 1 PM · a platform media and data teams use every day
I'm the only designer on my team, so I own design from start to finish: talking to users, designing the flows and screens, and working with front-end and back-end developers until they ship.
- Cut drop-off on the core flow by 28% after a redesign based on user research.
- Shipped an AI assistant to every user, validating each use case with real users.
- Built the design system from the ground up and led the app's new branding direction.
- Led discovery workshops with the ad operations and product teams to scope DecisionTrail, a new module that keeps a history of changes to settings, from framing the problem to the first flows.
- Ran user interviews and usability tests with ad operations users all through DecisionTrail's design, and fed what I learned straight back into the design.
- Ran A/B tests and tracked usage with Jimo and Screeb to decide what to improve first.
- Work with developers every day, from handoff until it's built, and with the PM to turn business needs into clear flows.
- 2023
Tobogan Agency
Product Designer · Full-time · La Défense, France
Apr 2023 — Aug 2024
ContextOne client product at a time · about 3 months each · 5 clients in 16 months
Designed web products for KIRRK, GRDF, Sirius, My Data Partner and Zupdeco, one client at a time: from new products built from scratch to new features for growing software companies.
- Ran discovery and ideation workshops with each client's team, so everyone agreed on the direction before design started.
- Ran competitor research and stakeholder interviews to back design decisions on every project.
- Presented my work and the reasoning behind it to clients and leadership at every milestone.
- Built and maintained Tobogan's Figma design system, with a Storybook library for developers.
- Designed Tobogan's new agency website.
- 2023
The Bridge
UX/UI Designer · Bootcamp · Remote
Jan 2023 — Apr 2023
ContextUX/UI design bootcamp · final project with developers and PMs
Learned to go from user research to clear interfaces, one design sprint at a time.
- Ran user interviews and usability tests in every sprint, and improved the designs based on what users told me.
- Worked with developers and PMs on a final team project, from first idea to delivery.
- 2022
Danks App
UX/UI Designer · Freelance · Zürich, Switzerland
Jan 2022 — Dec 2022
ContextOnly designer · with the founder and iOS developers · 12 months, including an 8-week design sprint
Led research and design from start to finish for Danks, an iOS app that connects content creators with brands in Germany, Austria and Switzerland.
- Ran usability tests, competitor research, expert reviews and stakeholder interviews to shape the product.
- Turned the research into personas, user journeys and detailed prototypes.
- Designed the website for the app's launch.
- Presented research findings and design decisions to the founder to help set product priorities.
- 2021
EDGE Strategy
Digital Marketing Manager · Full-time · Zug, Switzerland
Dec 2021 — Oct 2022
ContextMarketing role, before I moved into product design
Ran ad campaigns on Meta, Google Ads and LinkedIn, and raised conversion by 18%.
- Led the website redesign with Gravity, a London design agency.
- Led the visual identity work, alongside construction documentation and planning.
- Built dashboards to report campaign results to stakeholders.
- 2020
KOS Paris
Digital Marketing Manager · Full-time · Paris, France
Sept 2020 — Sept 2021
ContextMarketing role, where my move toward design started
Led the redesign of the company's online shop. That's where my move toward product design started.
- Grew website traffic by 20% through SEO and paid search.
- Managed all social media accounts and grew followers by 15%.
- Managed the content calendar and worked with outside agencies on creative production.
Skills
Interface design
Web and mobile apps · UX · design systems.
Research
User interviews · discovery workshops · usability testing · structuring content and navigation.
Process
Wireframes · prototypes · personas · user journeys · A/B tests.
Working with code
React · APIs · web apps (PWA) · handoff to developers · Git.
Tools
- Design & prototypingFigma · Photoshop · Lovable · Claude Design
- Research & testingHotjar · Maze · Jimo · Screeb · PostHog
- Dev & infraVercel · Supabase · GitHub · Storybook · Cursor
- AIClaude · ChatGPT · Gemini
- Product opsNotion · Atlassian · Asana · Miro
Education
- CourseraUX Design2024
- The BridgeMaster UX/UI Design2023 — 2024
- European Business SchoolMaster Digital Business2019 — 2021
Setup
Languages
- FrenchNative
- EnglishC1
Last updated September 2026