Freelancer profile translated to English.
Back to original languageAbout Sebastien
15 years of coding. 10 years of entrepreneurship. One obsession: Value.
Most projects fail not for lack of code, but for lack of alignment between technology and business objectives. My role is to remove that friction.
Former agency founder and creator of Pragma-Value (a 360° solution in the real estate sector), I have supported several companies in creating tailor-made solutions. I don't just "deliver features," I design profitable assets.
Why work with me?
Hybrid Vision: I speak the language of APIs and KPIs. I translate your business needs into scalable technical architecture.
Multi-sector Experience: From FinTech to real estate, I've learned to quickly immerse myself in complex businesses to extract critical needs.
Radical Pragmatism: My approach is driven by ROI and common sense. If a simple solution exists, I will never sell you a gas factory.
My areas of intervention:
Product Audit & Strategy: Diagnosing why a product is stagnating and defining the growth roadmap.
Architecture & Lead Dev: Designing robust, secure, and maintainable systems.
"Fractional" CTO Support: Steering your technology and teams without the cost of a full-time position.
Let's talk about your next growth milestone.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km)
Experience
- Pragma-Value.comCTO & Co-Founder | Proptech & Data Performance SaaSREAL ESTATEAugust 2025 - Today (1 year)Paris, FranceComprehensive design of a 360° decision support solution for the real estate sector.AI Innovation: Integration of LLMs (Mistral/Claude) for automated writing and unstructured data analysis.Data Engineering: Development of estimation algorithms and aggregation of heterogeneous data streams (APIs, Web Scraping).Product Management: Feature prioritization based on user ROI and time-to-market velocity (MVP).Stack: PHP 8, Symfony, Vue.js, MapBox, AI.
- Co-fondateur & Architecte | Agence Digitale & Studio ProduitCo-founderDIGITAL AND ITJanuary 2022 - Today (4 years and 7 months)Asnières-sur-Seine, FranceSupporting our private, public, and associative clients in digitizing their needs and creating tailor-made products."Fractional" Expertise: Intervention upstream of projects to validate technical feasibility and product-market fit.Key Achievements: Design of a fleet management SaaS and complex booking solutions (Logistics/Parking).Business Expertise: Technical audit and takeover of troubled projects (code rescue, strategic refactoring).
- ANGELSQUARECTO | Leading Investment Platform (Seed & Series A)PRIVATE EQUITYDecember 2015 - Today (10 years and 8 months)Paris, FranceTechnical direction of the platform connecting over 600 investors (Business Angels, Family Offices) with the best French startups.Scale & Robustness: Design of a system capable of managing financial data rooms and critical confidential data for several hundred funded startups (Pumpkin, Epicery, etc.).Business Alignment: Translation of VC analysts' needs into high-performance matching and scoring tools.Leadership: Guarantee of long-term technological vision in an environment with high regulatory and security demands.
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Education
- Master 2, Computer EngineeringEPITECH - European Institute of Technology2010Master 2, Ingénierie Informatique
- Master of Science in AdministrationIAE - Sorbonne Graduate Business School2011Master 2, Master Administration d'Entreprises - Gestion des dynamiques organisationelles