Freelancer profile translated to English.

Description

I design time-saving applications and automations: document processing, AI integration, connecting systems.

At Qorus, an international collaborative platform for the financial sector, I had the opportunity to work on various topics: feature development, legacy system migration, complex API integrations (Microsoft Graph, HubSpot, OAuth2), performance optimization.

Today, I address two types of needs:

Application Development

Backend and APIs (Laravel, FastAPI)
Static and reactive interfaces (React, Vue.js)
Integration of third-party tools (CRM, payment, storage) and data flows between your services

Automation & AI

Document processing, data extraction and analysis via LLM
Automation of repetitive tasks (n8n, scripts, custom integrations)

My approach: transforming manual and time-consuming processes into reliable, straightforward systems. I prioritize resilient solutions that stand the test of time.

Contact me to discuss your needs.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 20km)

dcadeau
Independent Consultant / Freelancer
SOFTWARE PUBLISHING
March 2026 - Today (5 months)
Paris, France
I launched my freelance web developer activity in early 2026, with four years of building and evolving a solution in production. I support my clients on business applications, APIs, and integrations, from design to deployment, with a constant focus on quality and maintainability.

Ongoing Mission
Since June 2026
Full-stack development of an unstructured data processing platform.
Implementation of an extraction and vectorization pipeline (pgvector) for semantic search.
Design of performant REST APIs, containerized integration and deployment.
Stack: FastAPI (Python), React TypeScript, PostgreSQL + pgvector, Docker.
FastAPI Docker Typescript External API Integration REST APIs
Qorus
Full Stack Web Developer
BANKING AND INSURANCE
November 2022 - November 2025 (3 years)
Paris, France
Laravel Vue.js MySQL
Maintenance and evolution of the main site: new features, bug fixes, refactorings, tests (via Pest), back office (Laravel Nova)
Integration and migration of two external Drupal portals, including data migration and interface harmonization.
Participation in product and business meetings (in French and English) for defining user and functional requirements.
Implementation of associated back-end and front-end logic.
Design and development of a Microsoft Graph API integration service: automated synchronization of CMS events with Outlook/Gmail calendars, participant management, notifications, and updates.
Development of a public HubSpot application (CRM integration) with full OAuth2 flow: secure authentication, token management, and data exchange with internal systems.
Implementation of a self-hosted WebSocket server, replacing Pusher, for real-time messaging, notifications, and interactions.
Backend performance optimization: cache management, queues, and rate limiting with Redis, considering external API constraints (HubSpot, Posthog, Algolia, Stripe…)
Design and supervision of import/export data processes (CSV, Excel formats): automation of incoming flows from external business sources, validation, data cleaning and transformation, generation of periodic exports for migration or archiving, with error handling and logging.
Implementation of a fallback mechanism for email sending, significantly reducing the risk of non-receipt.
Laravel Vue.js MySQL Redis API
Efma
Web Developer Intern
BANKING AND INSURANCE
September 2021 - November 2022 (1 year and 1 month)
Paris, France
PHP Javascript SQL
Front-end redesign following the rebranding.
Back-end developments covering new features and projects.
Participation in project configuration (replacing Laravel Mix with Vite, adding Tailwind...). This allowed for continued iterative development over time.
Laravel MySQL PHP JavaScript jQuery