Freelancer profile translated to English.
Back to original languageAbout Sebastien
Product Designer | I help SaaS companies design the moment when their users finally understand the product's value | Activation & Time-to-Value
An early-stage SaaS doesn't die from churn.
It dies because value arrives too late.
Most users sign up…
but never reach the moment where they truly understand why the product is useful.
When this moment is unclear or too far away:
activation stagnates
Product-Market-Fit remains fragile
Sales teams compensate with demos
support becomes onboarding
I work with B2B SaaS founders post-launch to reduce Time-To-First-Value and design the value moment in their product.
Specifically, I intervene to:
→ Identify the true Aha Moment
→ Shorten the path from signup to value
→ Remove friction in the activation journey
→ Transform onboarding into a product experience
Result:
Users who understand faster.
A product that explains itself through use.
A stronger Product-Market-Fit.
I don't work on ideas.
Only on live products with real users.
📅 AHA Sprint
In 2-4 weeks, you will know exactly where value is lost in your product and how to make it obvious.
French
Native or bilingual
English
Conversational
Remote only
Primarily works remotely
Experience
- HomunitySenior Product DesignerPRIVATE EQUITYSeptember 2025 - Today (9 months)Ongoing mission at Hommunity 🚀We are currently working on two key performance levers for the product:1️⃣ OnboardingAn approximate 20% drop-off was observed from registration.Objective: precisely understand where and why momentum is lost, then rebuild a clearer, smoother, and more reassuring journey from the very first minutes.On the agenda:friction point analysiscritical step simplificationmicro-interaction and feedback improvementvalue perception moment optimization2️⃣ Dashboard structureRethinking architecture and management to offer more clarity, hierarchy, and readability in decision-making.The challenge:Transform the initial experience into a driver of sustainable engagement, and make the dashboard a true management tool, not just an information screen.More coming soon 👀
- OpenClassroomsUX MentorEDUCATION AND E-LEARNINGAugust 2025 - Today (10 months)Mentoring future UX designers is more than teaching; it's growing with them.For several months, I've had the pleasure of mentoring students in their UX journey through OpenClassrooms. Each session is an opportunity to discover their ideas, their questions, and especially their passion for creating user experiences that make a difference.Being a mentor isn't just about correcting an exercise or approving a project. It's about guiding without imposing, encouraging when doubt sets in, breaking down complex problems to make design accessible, and celebrating every small victory that leads closer to expertise.Seeing their skills progress, their confidence grow, and their vision take shape is the true reward of mentoring. It reminds me why I chose UX: because every design starts with a deep human understanding.
- All-in FormationFreelance Product DesignerEDUCATION AND E-LEARNINGDecember 2024 - December 2024Design of a micro-learning platform – All-in FormationAll-in Formation – Specialist in transforming expertise into micro-learning pathways.Objective: Design intuitive and engaging interfaces allowing trainers to easily create and manage micro-learning paths using artificial intelligence, while ensuring rapid and optimized delivery through the strategic use of a design system.Key ContributionsHigh-fidelity interfaces: Creation of screens meeting modern design and accessibility standards, taking into account the specific needs of end-users.Material Design-based Design System: Integration and customization of the design system to reduce development costs and accelerate product delivery. This choice ensured better visual consistency and ease of implementation for technical teams.Custom UI Components: Development of robust interface components to guide developers and clarify the logic behind user journeys, ensuring smooth and efficient integration.Multidisciplinary CollaborationWith a UX Designer: Translating user insights into concrete solutions aligned with the client's business objectives.With a Product Manager: Synchronizing product priorities and deadlines to ensure delivery aligned with strategic expectations.
Reviews
Jérémy
CEO - DAUJAT JEREMY
Reviewed on 3/27/2026
Sébastien was relevant and effective regarding my issue. Together, we were able to create a complete project that I'm sure my prospects will love!
Congratulations again on this excellent work.
Estelle
Cheffe d'entreprise - Directrice artistique. - Estelle Phung
Reviewed on 3/20/2026
Excellent collaboration with Sébastien. He quickly identified friction points in our user journeys and proposed concrete solutions focused on conversion and retention.
His approach is both strategic and very operational: structured audit, relevant recommendations, and high-quality UX/UI execution. The designed interfaces are clear, modern, and designed to maximize performance.
A complete product designer, capable of combining product vision, user experience, and business challenges. I highly recommend him.
Recommendations
+2
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Master 2 (M2), Digital Strategy ExpertDigital Campus Paris2018Master 2 (M2), Expert en stratégie digital
- Multimedia Graphic Designer (Level 3 Title), Web Management / Multimedia and WebmasterFondation INFA2016Infographiste multimédia (titre de niveau 3), Gestion du Web / multimédia et webmaster