Freelancer profile translated to English.
Back to original languageAbout François
Need an experienced developer to structure, optimize, or evolve your complex business application?
With over 7 years of backend experience, I specialize in the Ruby on Rails ecosystem. Accustomed to demanding environments (FinTech), I recently led the technical architecture at WeSave (Amundi Group) for wealth management solutions used by millions of users.
My goal: build high-performing, scalable, and secure web applications while mastering technical debt.
💻 Core Expertise (Backend):
- Scalable Architecture: Robust systems adapted to high loads and business evolution.
- Performance & Security: Optimization of critical requests and protection of sensitive data.
- Software Quality: Refactoring of legacy components, technical mentoring, and best practices.
- API & Integration: Creation of solid foundations for communication with modern interfaces (Vue.js, etc.).
🤖 Bonus: AI & Data Integration:
High-performing AI requires an impeccable backend and reliable data. In addition to my Rails expertise, I assist my clients in integrating intelligent features:
- Data Extraction: Advanced Web Scraping (CrawlAI, browser-use) to feed your processes.
- LLM & API Integration: Secure connection of language models to your business logic.
- Autonomous Agents: Automation of complex workflows via LangGraph.
🛠️ Technical Stack:
- Backend: Ruby on Rails, PostgreSQL, Redis, Sidekiq, ElasticSearch.
- Frontend: Vue.js
- Ops / Tools: Docker, Heroku, NewRelic, Raygun.
Ready to consolidate your platform or enhance it with intelligent automation? Let's discuss!
French
Native or bilingual
English
Fluent
Can work on-site
Montpellier (up to 10km)
Experience
- WeSave (Groupe Amundi)Senior Back-end Developer Ruby on RailsBANKING AND INSURANCENovember 2021 - January 2026 (4 years and 2 months)Paris, FranceAt WeSave, I joined a dynamic team to develop innovative financial solutions used by millions of clients. My role combined technical expertise and understanding of business challenges to create high-performing, scalable, and secure applications.Projects: 🎯➜ LCL Mon Patrimoine - Wealth aggregation and advisory platform for 6 million LCL clients. Unified view of assets with personalized advisory journeys (Develop my wealth, Retirement, Inheritance, Taxation).➜ Vie Plus (Suravenir) - Client advisory automation platform (distribution of model portfolios, grouped arbitrage) with enhanced global wealth analysis.➜ Allvisory (Crédit Agricole Brie Picardie) - Wealth aggregation platform offering a 360° view of financial assets with tailored advisory services.Responsibilities and impact: 🔍• Design and architectural decisions for scalable solutions for wealth management used by millions of users from financial institutions• Performance optimization of critical applications, significantly reducing response times• Implementation of robust security measures to protect sensitive financial data• Strategic refactoring of legacy components, reducing technical debt• Active participation in code reviews and technical mentoringTechnical Stack: 🛠️Ruby on Rails, PostgreSQL, Redis, Sidekiq, ElasticSearch, Docker, Heroku, NewRelic, Raygun, Rapid7
- SIXMONFull Stack EngineerJanuary 2019 - July 2021 (2 years and 6 months)Le Havre, FranceAt Sixmon, I had the opportunity to work on various innovative projects, allowing me to develop technical versatility and adaptability to different business sectors. This experience gave me a global vision of software development.Notable achievements: 🏆• Pour une Agriculture du Vivant: Creation of a collaborative platform dedicated to agroecological transition, with optimization of complex queries for environmental data analysis. 🌱• Convoicar: Development of a mobile application and platform for vehicle delivery, integrating a personalized cross-platform chat system and intelligent fare calculation. 🚗• Napsis: Design of a web application for creating and managing quotes, including advanced catalog management. 💼• Cavas Xpert: Development of a management platform for the protection of people, property, and facilities, centralizing data collection and offering analysis tools to optimize safety and security performance. 🔒Technologies used: 💻Ruby on Rails, .NET Core, Angular, Vue.js, Ionic
- CMI Cockerill Maintenance & IngénierieSoftware Engineer InternshipMarch 2018 - August 2018 (5 months)First significant contact with modern technologies and agile methodologies, this internship allowed me to immerse myself in a demanding technical environment while laying the foundation for my career.Objective and achievement: 🎯Development of a complete solution for the administration and execution of advanced MCQs, with a focus on performance and user experience.Technical Stack: 🔧• Backend: Golang (Echo framework)• Frontend: React• Mobile: Ionic
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Education
- Expert in Information TechnologyEPITECH2018Le diplôme d'Expert en Technologies de l'Information (Bac+5, niveau 7 RNCP) d'Epitech repose sur une pédagogie intensive 100% par projets ("learning by doing"). Ce cursus en 5 ans, incluant une année à l'international, forge une forte autonomie technique et couvre : -> L'ingénierie logicielle : Architecture de systèmes complexes, algorithmique et développement de bout en bout. -> Le management IT : Pilotage de projets techniques, travail en équipe et résolution pragmatique de problèmes. -> L'innovation : Conception de solutions technologiques viables via l'Epitech Innovative Project (EIP).
- Master of Science - Networks and SecurityUniversity of Kent2017Le Master of Science (MSc) - Networks and Security de l'Université de Kent (Royaume-Uni) est un diplôme de niveau postgraduate (équivalent Bac+5) axé sur la cybersécurité et la protection des données. Ce cursus intensif d'un an en anglais comprend : -> Cybersécurité avancée : Cryptographie, détection d'intrusions, sécurité des systèmes d'exploitation et gestion des risques. -> Architecture réseau : Conception, administration et optimisation d'infrastructures réseaux complexes et sécurisées. -> Projet de recherche (Dissertation) : Application pratique et approfondie des concepts étudiés à travers la résolution d'une problématique concrète de sécurité informatique.