Freelancer profile translated to English.
Back to original languageAbout Ousmane
Expert fullstack developer specializing in Stripe and SaaS architectures, I support start-ups, SMEs, and large enterprises in building high-performing, scalable web products focused on your business results.
More than just a technical fullstack developer, I act as a true project management partner: I take on technical complexity with my team to allow you to focus on your growth and traction.
🚀 MVP & SaaS Platform Launch
From a blank slate to rapid market launch. Robust architectures designed for user acquisition, built to handle your future traction.
⚙️ Business Tool Redesign & Modernization
Digitalization of your internal processes: increased productivity, reduced technical debt, and secured critical data.
📈 Marketplaces, Back-offices & Complex Systems
Custom development of booking engines, marketplaces, and analytical dashboards to manage your business in real-time. Stripe and Stripe Connect integration for your payment flows and partner ecosystem.
✅ "Project Manager" Approach
Comprehensive support: architecture, development, cloud deployment (GCP), monitoring.
🔧 Technical Stack
Front-end: Next.js, React.js (performance & UX)
Back-end: Node.js, NestJs (robustness & business logic)
Cloud & DevOps: GCP (high availability)
Payment & Data: Stripe, Stripe Connect, marketplace, cloud integrations
💼 Methodology
Complete autonomy to bring your product from A to Z, or synergy with your existing Tech/Product teams. Rapid iterations, regular deliveries, total transparency on progress.
📍 Availability
Open to large-scale projects and long-term technical support. Do you have a project and need a solid technical foundation to support it? Let's discuss and transform your vision into a market-leading product.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km), Lille (up to 50km), Lyon (up to 50km), Toulouse (up to 50km), Marseille (up to 50km)
Experience
- PurpulyFullstack Developer of ApplicationsCONSULTING AND AUDITSOctober 2023 - April 2026 (2 years and 6 months)Paris, FranceDesign and Development of Client Products (Purpuly)- **Architecture and Design**: Designing intuitive and high-performing user experiences, aligned with business needs and client expectations.- **Full-stack Development**: Implementing front-end and back-end features using modern technologies (React, Node.js, etc.).- **Customization**: Adapting products to client specifics with a modular and scalable approach.Maintenance of Websites, Web Services, and APIs- **Back-end Infrastructure**: Managing and optimizing web services and APIs (Node.js, Nest.js, etc.) to ensure optimal availability and performance.- **Monitoring and Support**: Proactive service monitoring, incident resolution, and continuous performance improvement.Web Information Scraping-Data Collection**: Using **Puppeteer, RabbitMQ**, and **Bright Datato efficiently and scalably extract and process web data.- **Automation**: Implementing robust scraping pipelines, with error handling and adherence to target site usage policies.- **Storage and Analysis**: Integrating collected data into databases (SQL/NoSQL) and analysis tools for business exploitation.Stripe Connect Integration for Client Accounts-Multi-account Configuration**: Setting up **Stripe Connectto allow clients to manage their own transactions (payments, refunds, commissions).- Management ofautomatic transfersbetween the main account and client sub-accounts.- Integration ofwebhooksfor real-time transaction synchronization.- **Security and Compliance**:- Adherence toPCI-DSSstandards and local regulations (e.g., GDPR for European data).
- AffluencesFull-Stack DeveloperCONSULTING AND AUDITSJanuary 2023 - September 2023 (9 months)Paris, FranceContribution to the development and optimization of internal and client tools, specializing in traffic flow analysis. My responsibilities covered front-end (Angular, Remix), back-end (Nest.js, Node.js), and cloud architecture.Key Achievements:Administration Portal (Angular 14): Added user management modules (RBAC).Hyperion Dashboard (Remix): Contributed to the development of an interactive dashboard for visualizing and analyzing sensor data, with advanced filters.Deliverables:Angular 14 Portal used by business clients.Remix Dashboard hosted on *****.Comprehensive technical documentation (Swagger, Markdown).Skills Utilized:Frontend: Angular 14, RemixBackend: Nest.js, Node.js, Microservices, REST APIs, WebSocket.Testing & Quality: Jest, CI/CD (GitLab).Cloud & DevOps: GCP, Docker.Methodologies: Agile/Scrum, Clean Architecture, DDD.
- Institut ADIOSFullstack Developer - React / Node.jsHEALTH AND WELLNESSJanuary 2022 - January 2023 (1 year)Paris, FranceDevelopment of the client appointment booking website & deployment of analytical application containers with Docker on Google Cloud (Front-end and Back-end)
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Education
- Application and Software Solutions Development ManagerÉcole Supérieure de Génie Informatique (Paris)2023