Freelancer profile translated to English.

Description

I am a freelance backend developer / tech lead, specializing in .NET and Python, with strong expertise in cloud-native architectures, microservices, and DevOps.

I support teams and organizations on complex backend projects, focusing on code quality, maintainability, scalability, and reliability in production.

How can I help you

I can assist with:

- Backend architecture design (structured monoliths or microservices)

- API development (FastAPI, ASP.NET Core)

- Implementing best practices (Clean Architecture, SOLID, testing)

- Application industrialization (CI/CD, containerization, Kubernetes)

- Taking over or securing existing projects

I am accustomed to working in demanding environments (finance, large IT systems), with challenges related to performance, security, and service continuity.

My added value:

- Complete autonomy: I can manage a project from start to finish

- Global vision: backend + architecture + DevOps

- Commitment to quality: readable, testable, maintainable code

- Technical leadership: PR reviews, mentoring other developers, architectural decisions

Business understanding:

Particularly in finance, thanks to my academic background, which facilitates communication with functional teams.

I don't just "code features": I aim to build sustainable solutions.

Main technologies:

- Backend: .NET / ASP.NET Core, Python (FastAPI), Spring (Java)

- Architecture: Clean Architecture, microservices, REST

- DevOps / Cloud: Docker, Kubernetes, CI/CD, Terraform

- Frontend: React, Angular

Project types / deliverables:

- Backend APIs and business services

- Cloud-native backend applications

- CI/CD pipelines and Kubernetes deployments

- Data processing scripts / automated batch jobs

- Technical support and team quality improvement

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km)

BNP Paribas Asset Management
Software Application Developer
October 2025 - Today (8 months)
Nanterre, France
• Migration of a legacy application (Java) to a .NET/React application hosted on the cloud

• Backend development (.NET), frontend (React), deployment on IBM Cloud (pipelines, Docker, Kubernetes):
o Clean architecture and application of SOLID principles
o Optimization of complex SQL queries to improve performance
o Management of transactions and data consistency between Entity Framework and native SQL queries
o Management of Entity Framework migrations
o Implementation of unit tests
o Implementation of real-time communication via SignalR
o Setup of background processing for complex requests with execution times incompatible with synchronous HTTP calls
o Implementation of OAuth2 authentication with the BNP tool (Taase)

• Development of Python scripts to read files from COS, apply data processing, and integrate them into the PostgreSQL database. Deployment of these scripts via Kubernetes CronJobs

• Migration of part of the Kubernetes processing to an event-driven architecture based on Kafka, consuming data streams from the group's data hub

• Complete management of the DevOps environment: setup and monitoring of CI/CD pipelines, branch management and versioning strategies, review and validation of pull requests, preparation and piloting of releases, deployments to different environments (dev, test, production), and post-production monitoring

• Agile development, ticket organization for the development team
.NET Python React.js Google Cloud DevOps
BNP Paribas Asset Management
Software Application Developer
BANKING AND INSURANCE
September 2023 - November 2025 (2 years and 2 months)
Nanterre, France
The project involved replacing an existing Shadow IT application, developed under Microsoft Access, which had significant security, performance, and maintainability issues. The application was used by business teams in a critical context.
I was tasked with designing and developing a new web application single-handedly, starting from scratch, with the goal of securing the existing system, improving performance, and deploying the solution in the cloud, as part of one of the group's first applications deployed in this environment.

Achievements:
• Gathering and analysis of business needs, in direct collaboration with users, in the context of a complete redesign

• Writing functional and technical specifications

• Backend Python development with FastAPI:
o Access to secrets via Vault
o Secure APIs
o Clean Architecture with dependency injection
o OAuth2 Taase
o Complex data manipulation with pandas
o Excel reports and PDF files
o Unit tests with PyTest

• Frontend React development

• Complete management of the DevOps environment: setup and monitoring of CI/CD pipelines, branch management and versioning strategies, preparation and piloting of releases, deployments to different environments (dev, test, production), and post-production monitoring

• Implementation of functional tests and user support during validation phases

• Organization and management of the go-live process

• Writing technical and functional documentation
HSBC
Performance Analyst Assistant
September 2022 - September 2023 (1 year)
Paris, France
Within the performance teams, I participated in the maintenance and evolution of internal tools used for monitoring and analyzing financial performance. These tools were primarily based on VBA applications tightly coupled with Excel, with challenges related to reliability, automation, and time savings for users.

Achievements:
• Maintenance and evolution of existing applications developed in VBA
• Creation of new VBA tools to automate processes and reporting
• Gradual migration of some VBA macros to Python scripts to improve maintainability and performance
• Development of graphical interfaces in Python (Tkinter)
• Data processing and manipulation with pandas
• Generation of Excel files and automation of report emails