Freelancer profile translated to English.
Back to original languageAbout Nassim
Fullstack Developer with 8 years of experience, I have evolved within complex information systems for major groups such as Renault, PSA, Klesia, and Capgemini, working on both backend (Java Spring Boot, Node js, Python) and frontend (Angular, React).
My strength lies in my full-stack versatility, allowing me to take charge of a project from end to end: REST API design, data migration, microservices architecture, modern interface development, and production deployment. I apply clean code best practices, unit tests (TDD, Jest), and I work in an agile methodology with a strong focus on quality.
I have managed server migrations, set up CI/CD pipelines on Azure DevOps, automated data flows with Python, and delivered applications to production in demanding environments. I also held Tech Lead and Scrum Master responsibilities at Capgemini.
Autonomous, rigorous, and accustomed to complex technical contexts, I work with all types of organizations: large corporations, IT service companies, startups, scale-ups, and the public sector. If you need a developer who understands quickly, takes responsibility, and delivers, let's talk.
French
Native or bilingual
English
Fluent
Spanish
Basic
Can work on-site
Paris (up to 50km), Marseille (up to 20km), Lille (up to 10km), Lyon (up to 20km)
Experience
- KlesiaFullstack Developer | Java · Angular · Azure DevOpsBANKING AND INSURANCESeptember 2022 - February 2026 (3 years and 5 months)Montreuil, FranceWithin Klesia's IT department (a major retirement insurance group), I am involved in the modernization and transformation of the information system with a broad full-stack scope: large-scale data migration, Java Spring Boot / Angular business applications, Python automation, and Azure DevOps CI/CD pipelines.Tasks:🔹 Migration and automation of data flows using Python scripts (accounting flows, file processing, integrations).🔹 Development of Java Spring Boot batches for business and accounting processing.🔹 Design of complete batch → API → UI flows in Angular.🔹 Development of a GED application from scratch on Azure (Search, Storage, Indexers).🔹 Implementation of Azure DevOps CI/CD pipelines.🔹 Access security via Keycloak.🔹 Migration of Windows servers from 2003 to 2022 and transformation of the IT architecture.Stack: Java 17, Angular 13/19, Python, Spring Boot, Azure DevOps, PostgreSQL, Docker, Keycloak.
- Renault GroupeFullstack Developer | Java · Angular · ElasticsearchAUTOMOBILEFebruary 2021 - August 2022 (1 year and 7 months)Le Plessis-Robinson, FranceWithin the Renault team, I participated in the from-scratch development of the internal application "PERF APV", intended for after-sales performance analysis. The project was managed using the agile SCRUM methodology, with progressive deployment of several modules into production.Development of user interfaces in Angular 10 with multi-screen responsive design. Design and implementation of REST APIs in Java 11 / Spring Boot. Processing and cleaning of CSV files, PostgreSQL storage, and query optimization via Elasticsearch. Production deployment of the Sales PR, Workshop Volumes, Purchases PR, and Customer Experience modules.Stack: Java 11, Angular 10/13, Spring Boot, PostgreSQL, Elasticsearch, TypeScript, Docker, GitLab CI/CD.
- CapgeminiFullstack Developer & Tech Lead | Java · Angular · ReactSOFTWARE PUBLISHINGOctober 2018 - December 2020 (2 years and 3 months)Issy-les-Moulineaux, FranceAt Capgemini, I worked on several full-stack web projects with expanded responsibilities: development, Tech Lead, and Scrum Master. Projects were managed using the agile SCRUM methodology on internal and external applications.Development and evolution of several web applications in Java EE, Angular, ReactJS, and Symfony 4. Design of business features: profile management, messaging, appointment scheduling, matchmaking, and event calendar. Successful migration from AngularJS to ReactJS. Correction of complex anomalies related to SSO and Elasticsearch. Deployments in testing, pre-production, and production environments.As Tech Lead and Scrum Master: task distribution via JIRA, code review, onboarding new team members, leading daily meetings, and writing documentation on Confluence.Stack: Java EE, Angular 6, ReactJS, AngularJS, Symfony 4, PHP, MongoDB, Jenkins, Git, Confluence.
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Education
- Master in Computer ScienceEstiam2020Développement web, devops, react, angular
- Professional Bachelor's degree in Computer ScienceAix-Marseille University2017