Freelancer profile translated to English.
Back to original languageAbout Jonathan
🎯 Early-stage SaaS Partner
I help product teams toprioritize**, **design**, and **test**key features** for their business development.
I am accustomed toco-designing MVPswith founders and PMs,aligning design and tech teamsto deliverfeatureswith high **added value**, not just mockups.
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🛠 My Services
User Research:Interviews, tests, field observation. The goal: validate that we are solving a real problem before investing in development.
Product Strategy:Architecture, user journeys, roadmap, prioritization. What to build first, balancing business needs, user expectations, and technical feasibility.
Design:Translating needs into concrete interfaces, consistent with the design system. I work closely with developers to ensure what's designed is implemented correctly.
At every step, Iintegrate AIas a working tool. Not a gadget.Workflows adaptedto research, product, and design. Result: higher quality deliverables, delivered faster.
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📊 Concrete Results
Power plant monitoring SaaS:+23% kWh per user in 12 months, while maintaining alert resolution time under 45 min, thanks to:
- A new diagnostic dashboard + integrated alerting system
- Automation of reporting, saving each operator 3 x 30 min per day
Inspection planning SaaS:-6% of type 2 leaks after one year of use on the pilot site, compared to the previous three years.
- Deployment of the solution to 500 users across 4 sites in 3 countries.
- Inspectors -> 82% DAU, 3 sessions/day per active user
- Process engineers -> 65% WAU, 1.5 sessions/week per active user
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Total Digital FactoryFounding Product DesignerENERGY AND UTILITIESDecember 2021 - November 2024 (2 years and 11 months)Paris, France- Founding Designer for 4 SaaS from concept to MVP, owning full design cycle- Define with PM/PO product strategy based on user research- Ran ~40 interviews; crafted 11 personas, 9 journeys, 3 blueprints; 70+ tests- Launched scalable solutions across multiple sites and countries- Worked in 4 Scrum squads with PMs & devs for daily collaboration- Data-driven iterations post-MVP based on user analytics (Hotjar & Cloudwatch)- Built dark-mode design system with ~20 reusable components
- Spie BatignollesProduct DesignerARCHITECTURE AND URBAN PLANNINGJuly 2020 - May 2021 (10 months)Paris, France- Digitalised personnel and equipment tracking & procurement in one SaaS (desktop + mobile)- Cut procurement requests by 10 s; auto-fill removed heavy manual data entry- Re-shaped workflows via insights gathered from site crews- Discovery phase: 12 interviews, 4 personas, 4 journeys, 12 usability tests- Help to run co-creation and alignement workshops- Delivered 60 desktop & 12 mobile screens with full specs and reusable components
- AvanadeProduct DesignerCONSULTING AND AUDITSJanuary 2020 - May 2025 (5 years and 4 months)Paris, France- Designed digital products for TotalEnergies, Spie Batignolles, Sodexo & BforBank- Rapidly onboarded, grasping industry context and user goals- Embedded in on-site agile squads; led discovery-to-launch cycles- Shipped feature designs on time and within scope
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Education
- Master PCFA, Fundamental and Applied Cognitive PsychologyUniversité Paris Descartes2019Master PCFA, Psychologie Cognitive Fondamentale et Appliquée
- Master Cognitive Sciences HCI: Human-Computer Interaction trackUniversité Lumière Lyon 22020Master Sciences Cognitives IHM: parcours Interactions homme-machine