Freelancer profile translated to English.
Back to original languageAbout Romain
Python Backend Expert | Django
Looking for aPython backend expertcapable of building a scalable architecture, integrating your AI pipelines, and eliminating your technical debt?
During the growth phase, a poorly architected backend or one unable to absorb new features hinders your product's evolution. I assistVSEs**, **SMEs**, and **agenciesin building solid technical foundations or improving existing ones. My goal: to make your backend a reliable growth engine.
My expertise serving your challenges:
- **MVP Creation**: Design and development of your product from the first line of code to production.
- **Refactoring**: Stabilizing unstable backends, optimizing performance, and managing technical debt.
- **AI Integration**: Industrializing AI pipelines (RAG, asynchronous processing) to integrate them into your business workflows.
- **Technical Partnership**: Global support, from architectural thinking to Cloud deployment.
With over 5 years of experience, I have designed and secured backends in very different environments (cybersecurity, web development agencies, biotechnology). My approach is service-oriented: I decouple business logic from the framework to ensure code that is **easy to test, maintain, and evolve**.
My technical stack:
- Python:Django**, **Django REST Framework (DRF)**, **Channels**, **Celery**, **Pydantic
- Data/Cache:Pandas**, **PostgreSQL**, **Redis
- Frontend:DaisyUI**, **HTMX**, **Alpine.js
- DevOps/Infra:Docker**, **AWS**, **Ansible**, **CI/CD
Have a new project to launch or an existing infrastructure to stabilize?
Send me a brief overview of your current challenges. I willrespond within the hourto propose an initial technical approach aligned with your objectives.
French
Native or bilingual
English
Fluent
Can work on-site
Lorient (up to 50km), Vannes (up to 50km), Rennes (up to 10km), Quimper (up to 50km)
Experience
- Collecte Localisation SatellitesPython Backend DeveloperSOFTWARE PUBLISHINGJune 2026 - Today (2 months)Brest, France→ Mission: Migration of a containerized scientific application for satellite data processing from Python 3.11 and Debian 12 to Python 3.13 and Debian 13 (Trixie).→ Achievements:
- Migration of a containerized scientific application for satellite data post-processing from Python 3.11 and Debian 12 to Python 3.13 and Debian 13, resolving system library and dependency conflicts.
- Containerization of the execution environment withDockerto ensure the reproducibility and stability of offshore wind estimation calculations.
- Integration and optimization of the production deployment of a deep learning model estimating surface wind from SAR satellite imagery.
- Redesign and acceleration ofGitLab CI/CDpipelines, replacingpipwithuvfor package management and securing internal dependency resolution.
- Validation of scientific non-regression by comparing output datasets in NetCDF format to ensure result accuracy.
→ Technical Stack: Python, Docker, Debian, uv, Gitlab CI/CD, Numpy, Pandas - Agence de développement Web et MobilePython/Django Backend DeveloperSOFTWARE PUBLISHINGApril 2026 - April 2026Lorient, France→ Mission: From-scratch backend development of a solution integrating **AI processing pipelines**.→ Achievements:
- Design and development of REST APIs withDjangoand **DRF**, bringing strong expertise in architectural choices.
- Implementation of a secure authentication system usingJWTtokens, integrating standard login flows and Google SSO.
- Integration and orchestration of an asynchronous pipeline for AI file processing, ensuring task scalability viaCeleryand **Redis**.
- Active participation in code reviews and maintaining a high level of technical requirement (strict static typing with Mypy, advanced linting) to ensure robust and maintainable code.
→ Technical Stack: Python, Django, DRF, Celery, Redis, PostgreSQL, Docker, Mypy - Solabia GroupFullstack DeveloperBIOTECHSeptember 2024 - January 2026 (1 year and 4 months)Paris, France→ Mission: Design, develop, and deploy aweb applicationdedicated to counting Escherichia coli and intestinal enterococci for water quality control.→ Achievements:
- Complete backend design withDjangoand frontend withDaisyUI**, **HTMX**, and **Alpine.js(authentication, business logic, results management, automatic email).
- Setting up theAWSinfrastructure andCI/CDautomation.
- Operational and security maintenance of the platform (monitoring, security updates).
→ Technical Stack: Python, Django, Celery, Redis, Linux (Debian), Ansible, Docker, AWS, HTMX
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Education
- Master in Complex Systems EngineeringUniversité Bretagne Sud2020Master Ingénierie des Systèmes Complexes
- Bachelor's degree in Computer ScienceLa Rochelle Université2018Licence Informatique