Freelancer profile translated to English.
Back to original languageAbout Sébastien
.NET Developer for 17 years, passionate and entrepreneurial, I have developed numerous web applications for the industry and the banking market (Caisse d'épargne, banque populaire).
My expertise primarily focuses on Microsoft technologies including:
- Front-end development with BLAZOR, ASP.NET, MVC, .NET CORE, HTML, CSS, BOOTSTRAP, MUDBLAZOR and JavaScript
- Back-end development with WEBAPI, C# and Swagger
- Databases with Sql Server, SQL and T-SQL
Open to all information technologies, I also have experience as a full-stack developer, which allows me to support you in all phases of your project.
French
Native or bilingual
English
Conversational
Remote only
Primarily works remotely
Experience
- Caisse épargneFull-stack DeveloperBANKING AND INSURANCEJanuary 2011 - December 2017 (7 years)Saint-Herblain, France🎯Real Estate Credit & Regulatory CompliancePeriod:2011 to 2017 – ITCE (clients: Crédit Foncier, AXA, Caisse d’Épargne)Context:- Management of intranet applications dedicated to real estate credit sales and processing- Robust technical ecosystem: 4,000 users, 200 simultaneous connections, project team of 30 peopleKey Responsibilities:- 🚀 Integration of deliveries into testing and production environments (weekly and exceptional)- 📐 Project Manager for regulatory compliance (European directives – 2,000 person-days)- 🧩 Development of functional enhancements:- Management of co-ownerships and periodic accessories for Crédit Foncier- Real estate agent commission calculation- Credit file tracking, processing flow management, and contractual accessories- 🛠 Coordination of technical projects (500 person-days): negotiation with IT department, planning and organization of cross-functional tasks- 🧭 Technical referent for credit processing and real estate agent applications- 👨👩👧👦 Team management (3 to 5 people), client relationship management, project management- 🔄 Monitoring of testing, bug fixing, deployment, evolutionary and corrective maintenanceTechnical Stack:- 💻 ASP.NET, Web Forms, JavaScript (front-end and business logic)- 🗄️ DB2, Pacbase (read-only – impact analysis and data recovery)- 🧰 TFS: version management, bug tracking, delivery coordination
- Banque populaireProject ManagerBANKING AND INSURANCEJanuary 2018 - Today (8 years and 5 months)Saint-Grégoire, France🎯IT Project – Banque Populaire Grand OuestPeriod:Since January 2018Context:- Maintenance and evolution of a portfolio of 120 internal applications used by 3,500 employees- Mission focused on proximity applications for banking operationsKey Responsibilities:- ☁️ Migration to BPCE cloud:- Technical takeover of 100 internal applications- Coordination with BPCE-IT and BPCE-SI for target architecture, flows, and security- 🧩 Management of business projects:- Requirements gathering, design, and development of internal micro-workflows- Production monitoring, functional evolutions, user support- 🔄 Development of new workflows to automate internal processes- 🔧 Full-stack design, development, deployment, and corrective/evolutionary maintenance- 🧠 Technical referent during the merger of Banque Populaire Atlantique / Ouest:- Adaptation of proprietary applications to the new information system- Management of a team of 4 people within the competence centerTechnical Stack:- 💻 C#, ASP.NET Core, Angular, JavaScript, Blazor- 🗄️ SQL Server- 🧰 DevOps, Git
Reviews
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Education
- BTS in Management Information Systems - DeveloperAIFCC2001Développement c++, SQL, Algorithme