Freelancer profile translated to English.
Back to original languageAbout Nicolas
I am a senior information systems consultant, having worked in the field since 1999.
With the advent of generative AI during my tenure at Paylib, I pioneered its adoption and developed strong expertise in its implementation, particularly for refactoring and cleaning complex, multi-repository codebases.
My preferred languages are: Rust, Python, C, and Bash; to a lesser extent, Java, C++, TypeScript, Perl, Fortran, Go.
I have expertise in the following areas:
- Full-stack Web applications with a preference for Rust web frameworks, such as Dioxus and Yew, and React + Vite on the TypeScript side.
- Native Linux applications, from design to packaging, in C/Python/Rust + Qt/Gtk
- Back-end development in Unix/Linux environments
- Web API and micro-services development
- Linux system administration
- DevOps in Unix/Linux environments.
- Writing reliable/complex Shell scripts and Systemd daemons.
My journey
Initially employed by IT Services Companies (Cap Gemini, Altran, Atos Origin), I am now a member of the independent network HappyDev and an employee of the cooperative company Coopaname.
I have carried out multiple projects for clients such as the Council of Europe, PSA, and the Schengen Information System, and I have regularly held the role of technical project manager.
I am an astrophysicist by training, with a specialization in data processing.
French
Native or bilingual
English
Fluent
Can work on-site
Asnières-sur-Seine (up to 50km)
Experience
- Paylib ServicesSenior Data EngineerBANKING AND INSURANCEMay 2022 - May 2025 (3 years)Paris, FranceFor 3 years, I was part of the Paylib Data team, contributing to the development and improvement of the data platform until Paylib ceased operations in 2025.The data team was Paylib's "business compass," enabling analysis, visualization, and understanding of Paylib's usage across various business services.I was responsible for the maintenance and development of the Paylib data platform, as well as the technical design of its evolutions.With the advent of generative AI during my tenure at Paylib, I pioneered its adoption and developed strong expertise in its implementation, particularly for refactoring and cleaning complex, multi-repository codebases.My tasks• Maintain and develop data exchange jobs with partner systems• Maintain and develop pipelines that feed the Postgres data warehouse• Maintain and develop data encryption and decryption APIs• Design the evolution plan for the data scope, considering different requirements (business, technical, performance, etc.)• Evangelize the controlled use of LLMs among Paylib teams.Mission context• Scrum• CI/CD• SRE team supportSkills utilized• Software craftsmanship in Python and Rust with senior development experience• PostgreSQL and relational databases• Kubernetes platform• Architectural knowledge• Rigor, teamwork, autonomy• Gitlab CI• Kibana, Grafana, Prometheus• RabbitMQ• Qlik Sense• Google Analytics• Systemd
- GatewatcherTechnical Project ManagerSOFTWARE PUBLISHINGDecember 2020 - April 2022 (1 year and 3 months)Nanterre, FranceWeb application in Django + PostgreSQL + Celery, with a team comprising a scrum master and a product owner.The client is Gatewatcher, which sells intrusion detection appliances.Our application is containerized, as is our development environment, and includes an API (Django REST).Continuous integration is handled by GitLab CI.
- CoopanameSenior Information Systems ConsultantSOFTWARE PUBLISHINGJanuary 2018 - Today (8 years and 6 months)Nanterre, France
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Education
- DEA AstrophysicsStrasbourg Observatory1999Spécialité: analyse et traitement de données