Freelancer profile translated to English.
Back to original languageAbout Wael
Senior .NET Backend Developer with over 8 years of experience in designing and developing critical, distributed, and cloud-oriented platforms.
Beyond my work in large corporations, I also develop and operate Carthanova, an IoT & AI platform in production for real-time monitoring of connected greenhouses, agricultural data analysis, and AI-based conversational assistance.
This experience gives me a concrete understanding of production challenges: performance, scalability, observability, security, resilience, and cost control.
I work on issues such as:
✅ .NET / ASP.NET Core Backend Development
✅ Microservices and distributed architectures
✅ Kafka, RabbitMQ, and Event-Driven systems
✅ Kubernetes, Docker, and CI/CD
✅ PostgreSQL, SQL Server, and performance optimization
✅ CQRS, Event Sourcing, and Clean Architecture
✅ Azure and cloud platforms
Recent achievements
🔹 Technical lead for an ESG platform at BNP Paribas Asset Management, involving application migration from Net Core to .NET 8, SqlServer to PostgreSQL, and Kafka-based event-driven architecture.
🔹 Implementation and operation of distributed services deployed on Kubernetes with Grafana and Prometheus monitoring.
🔹 Design and production launch of Carthanova, an IoT & AI platform integrating:
- .NET 8 Backend
- Secure APIs
- PostgreSQL and InfluxDB
- Real-time processing
- Generative Artificial Intelligence (RAG)
- Vector search (Qdrant)
- Docker containerized deployment
I particularly enjoy assignments involving complex systems, scaling challenges, application modernization, or transformation towards cloud-native architectures.
French
Native or bilingual
English
Fluent
Arabic
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- Carthanova Startup AgriTech IASenior .NET DeveloperDecember 2025 - Today (8 months)Paris, FranceA connected greenhouse. An AI that understands it. Delivered in production, solo.Carthanova is the intersection of precision agriculture and artificial intelligence — real-time sensors, intelligent alerts, and an assistant capable of analyzing a plant photo and diagnosing a disease in natural language.What was designed and delivered:🧠 A contextual AI assistant, not a chatbot — Full RAG pipeline (Qdrant + Gemini 2.5 Flash), live access to sensor data, 6-hour trend analysis, statistical anomaly detection, token-by-token streaming. The AI knows what's happening in the greenhouse now.📸 Field AI vision — Plant photo → phytopathological diagnosis in seconds. YOLOv8 + Gemini multimodal.⚡ End-to-end real-time — ESP32 → MQTT → processing → SignalR → dashboard. Alerts are sent on Telegram before the farmer even looks up.🏗️ Architecture that lasts — 3 independent microservices (.NET 8, Python, React 18), Clean Architecture CQRS/DDD, 96 automated tests, 3 GitHub Actions CI/CD pipelines. Zero assumed technical debt.
- BNP Paribas Asset ManagementSenior .NET Engineer / Technical Lead – Cloud & KubernetesBANKING AND INSURANCEAugust 2022 - August 2025 (3 years)Paris, FranceParticipation in the modernization of a strategic ESG platform used for calculating, synchronizing, and disseminating non-financial scores within the group.Key achievements
- Technical lead for the ESG scope and support for teams on technical choices and best practices.
- Design and development of a .NET 8 backend orchestrator managing ESG workflows.
- Implementation of an event-driven architecture based on Apache Kafka to decouple processes and improve service resilience.
- Complete migration of applications to .NET 8.
- Migration of SQL Server databases to PostgreSQL.
- Deployment of services on Kubernetes using Helm.
- Implementation of monitoring and observability using Grafana and Prometheus.
- Design of audit and traceability mechanisms meeting regulatory requirements.
Results- Modernization of the technical foundation with adoption of .NET 8, PostgreSQL, and a Kafka-based event-driven architecture.
- Improved resilience and scalability of ESG processes through service decoupling.
- Reduction of operational risks through workflow automation and incident recovery mechanisms.
- Enhanced platform observability with real-time monitoring and proactive alerts.
- Improved traceability and compliance of ESG data through the implementation of dedicated audits and controls.
Technical environment.NET 8, ASP.NET Core, C#, Entity Framework Core, PostgreSQL, Apache Kafka, Kubernetes, Helm, Docker, Grafana, Prometheus, IBM Cloud, Git, CI/CD. - GROUPE UPSenior .NET Engineer – Backend & Azure CloudSOFTWARE PUBLISHINGMay 2021 - May 2022 (1 year)Paris, FranceParticipation in the design and evolution of a digital subscription platform within the context of financial services transformation and regulatory compliance.Involvement in customer journey issues, Open Banking payments, distributed architecture, and personal data protection.Key achievements
- Development and evolution of a CQRS / Event Sourcing architecture with Cosmos DB as the Write Model and SQL Server as the Read Model.
- Design and development of the backend for the subscription process, enabling multi-step workflow management with user progress saving and journey resumption.
- Integration of Open Banking solutions (PSD2) via the Fintecture API for initiating and tracking bank payments.
- Implementation of idempotency mechanisms and security for exchanges through validation of HMAC signatures of webhooks.
- Development of automated customer data anonymization services for GDPR compliance.
- Implementation of asynchronous processing using Azure Service Bus, Azure Functions, and Worker Services.
- Contribution to improving platform observability through business indicators and application monitoring.
- Contribution to some React front-end evolutions on the subscription journey.
Results- Increased reliability of the online subscription process.
- Reduction of manual tasks through automation of business workflows.
- Strengthened regulatory compliance (GDPR and PSD2).
- Improved resilience and traceability of payment operations.
Technical environment.NET Core, ASP.NET Core, C#, CQRS, Event Sourcing, MediatR, Cosmos DB, SQL Server, Azure Service Bus, Azure Functions, Azure App Services, Azure Key Vault, Application Insights, React, Fintecture, Git, CI/CD.
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Education
- Computer Engineering Degree – Software EngineeringESPRIT – Higher Institute of Engineering and Technologies2017Formation d’ingénieur orientée génie logiciel, couvrant la conception et le développement d’applications, les architectures logicielles, les bases de données, les systèmes distribués et les bonnes pratiques de développement. Mise en œuvre de projets concrets en .NET, Java et technologies web, avec une forte approche méthodologique et orientée qualité.
Certifications
- CKAD – Certified Kubernetes Application DeveloperCloud Native Computing Foundation (CNCF)