Freelancer profile translated to English.
Back to original languageAbout Matthieu
Software development engineer for 12 years, I am passionate about new technologies and tech. I am available for full-time or part-time missions. Having successfully worked in complex and demanding environments for nearly 12 years, I use my professionalism and technical skills to bring maximum value to my clients in order to design/maintain reliable and optimized applications.
Strongly experienced with Microsoft technologies such as .Net, C#, Asp, SQL server, I have also had the opportunity to work with a wide range of tools, such as Typescript, Angular, VueJs, ElasticSearch, Kubernetes. With a good understanding of development principles, I learn new technologies/tools relatively quickly as needed.
I would be delighted to discuss how I can help your company develop robust and scalable solutions.
Programming: C#, ASP.Net, C++, Vue.js, WPF
Infrastructure: Terraform, Azure
Orchestration: Kubernetes, Helm, Ansible
Container: Docker
Deployment: GitHub, Jenkins, Azure DevOps, ArgoCD, GitLab
Scripting: Powershell, Shell
Reverse Proxy: IIS, NGINX
OS: Windows, Linux RedHat/CentOS
Databases: SQL server, PostgreSQL, ElasticSearch
Software: Visual studio, VS Code, SSMS
Methods: BDD, DDD, CQRS, Scrum, Agile
French
Native or bilingual
English
Fluent
Can work on-site
Montpellier (up to 50km), Nîmes (up to 10km)
Experience
- Septeo Solutions NotairaesFull-Stack DeveloperSOFTWARE PUBLISHINGMay 2025 - Today (1 year and 1 month)Montpellier, FranceFreelance Full-Stack Architect & Developer on the migration of a legacy notarial management software to a cloud SaaS architecture, used by over 4500 notarial offices.Design of a modular monolith in Vertical Slice Architecture:
- Transition to a multitenant PostgreSQL database
- Implementation of modern DevOps (Helm, Azure DevOps CI/CD) and an observability stack (OpenTelemetry, ELK).
- Progressive migration module by module without service interruption, on a database initially without test coverage.
AI Acceleration: Intensive use of Cursor and development of custom AI agents to navigate a large legacy codebase, automate repetitive migration tasks, and significantly accelerate the delivery pace. AI has been a true technical co-pilot throughout the mission, compensating for the initial lack of tests and the high business complexity. - Septeo Solutions NotairesFull-Stack DeveloperSOFTWARE PUBLISHINGFebruary 2024 - May 2025 (1 year and 2 months)Lattes, FranceSenior freelance Full-Stack Developer on accounting software for notaries.
- Optimization of backend performance (asynchronous processing queue, intelligent cache, pagination) and heavy client WPF side (BulkObservableCollection, virtualization, asynchronous calls).
- Development of a Vue.js environment visualization tool and an integration test generator (containerized database + source generator).
Result: reduced response times and significantly improved heavy client fluidity. - Societe Generale Corporate and Investment Banking - SGCIBBackend Software EngineerBANKING AND INSURANCEJanuary 2021 - December 2023 (2 years and 11 months)Val-De-Fontenay, 94120 Fontenay-sous-Bois, FranceDesign and evolution of a banking reference API (contact, powers of attorney, and mandate management)
- Evolution of ASP.Net Core 7 web APIs (BDD, DDD, CQRS)
- SQL query optimization
- AWS S3 storage for binaries
- Text search with ElasticSearch
- Implementation of monitoring with the ELK suite
- Infrastructure management for our Terraform / Ansible products
- Infrastructure for our web and batch APIs
- Infrastructure for our ElasticSearch clusters
- Migration of all our applications to containers + K8S
- Migration of CI/CD from Jenkins to GitHub / ArgoCD
- Securing production APIs with 20 million calls per week
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Education
- Master BAC+5, SICOM : Signal Image Communication MultimédiaGrenoble INP - Phelma2014Master BAC+5, SICOM : Signal Image Communication Multimédia
- BAC+2, Classes préparatoiresCPGE Lycée Henri Loritz2011BAC+2, Classes préparatoires