Freelancer profile translated to English.
Back to original languageAbout Theo
I design and develop robust and useful web applications, integrating **Django backend**, **Vue.js frontend**, and **AI solutions (ChatGPT, vector store, RAG)**.
I work on projects with high business value:internal tools, data platforms, interactive mapping, AI assistants based on private data.
My goal:deliver quickly, cleanly, and in production— not disposable POCs.
👨🏼💻What I offer
Senior developer with over10 years of experience**, I support companies, startups, and product teams in the **design, development, and industrializationof web and data applications.
My expertise covers the entire chain:
- **Backend**: Python, Django, REST APIs, authentication, permissions, performance
- **Frontend**: Vue.js (Vue 2 & 3), clear and user-centric interfaces
- **Data & AI**: ChatGPT integration, vector stores (RAG), document processing, semantic search
- **Mapping & data viz**: Google Maps, Leaflet.js, interactive visualizations
I have notably worked on projects forlogistics optimization**, **prediction**, **map visualization**, and **business process automation through AI.
I pay particular attention to:
- code quality
- maintainability
- business understanding
- security and cost control, especially on AI projects
Comfortable working independently or in a team, I can intervene astechnical support**, as a **lead**, or on **end-to-endmissions.
⚙️ Technologies & Tools
Development
- Python
- Django / Django REST Framework (DRF)
- JavaScript / TypeScript
- Vue.js
- Node.js
Data & AI
- Artificial Intelligence / ChatGPT / LLM
- Vector Store / RAG
- Machine Learning (solid foundation)
Databases
- PostgreSQL
- SQL
- GraphQL
DevOps / Prod
- Docker
- CI/CD
- Linux
🪪 Théo HENNESSY
👔 LinkedIn: theohennessy
🌐 theohennessy.com
English
Native or bilingual
French
Native or bilingual
Can work on-site
Marseille 6e Arrondissement (up to 10km)
Experience
- Theo HennessyFull Stack EngineerDIGITAL AND ITJanuary 2023 - Today (3 years and 7 months)Marseille, France
Freelance Fullstack Developer (Django & Vue.js)
I assist my clients in the design and development of custom web applications.**Backend**: Robust and secure APIs with Django/DRF, authentication integration (OAuth, Google Login), business workflow automation.**Frontend**: Modern and responsive interfaces with Vue.js, full integration with the backend.**Data & visualization**: Dashboards, interactive reporting, integration of multiple data sources. - Cogepart GroupeAI EngineerLOGISTICS AND SUPPLY CHAINJuly 2021 - August 2022 (1 year and 1 month)AsLead Data Science Developerat **Cogepart**, I designed innovative solutions to optimize logistics operations: route optimization algorithms, demand forecasting with time series, real-time data integration, and interactive map visualizations.
- iProtego : Agence e-réputationBackend Developer and API ManagerBANKING AND INSURANCEMarch 2018 - July 2020 (2 years and 4 months)Marseille, FranceAtiProtego**, I worked on the development and maintenance of web solutions for **digital identity protectionand online reputation management.Backend development in **Python/Django**: design of **REST APIs**, authentication management, third-party service integration.Frontend development in **Vue.js**: creation of modern and responsive interfaces, integration with the backend, improvement of user experience.Implementation of data flows and automations for processing and analyzing large amounts of information.Collaboration with the product and technical team to deliver reliable and scalable features.
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Education
- Bachelor of PhilosophyUPMF GRENOBLE2010