Freelancer profile translated to English.

Description

Fullstack developer with 8 years of experience, I have developed strong front-end expertise, specializing in React for complex and high-volume projects.

Accustomed to component-oriented architectures, I design robust, scalable, and maintainable interfaces, documented with Storybook and covered by automated tests using Jest and React Testing Library.

I have also contributed to the implementation and evolution of Design Systems, ensuring UI consistency, performance, and large-scale maintainability.

Conscious of quality, I pay particular attention to code readability, best practices, performance, and user experience.

I have also worked on the back-end in Java or Kotlin with Spring Boot, following TDD principles, implementing unit and integration tests, and designing robust and scalable REST APIs.

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km)

sncf voyageurs
Full Stack Developer Java/Kotlin/React
August 2025 - Today (1 year)
Application allowing agents to view order details and manage refunds
(Andora). Application redesign and evolution.

Work performed
- Development of the admin console page for automated generation of refund reports
- Implementation of pre-filling email/phone fields with automatic search trigger via URL
- Integration of display and refund for Blablacar Bus and Flixbus fees
- Redesign of the history component for managing commercial cards
- Complete redesign of the catalog API with migration to Kotlin
- Implementation of agent role traceability in logs for security audits
- Development of the display of pricing conditions in product details
- Real-time monitoring with Datadog for proactive anomaly detection
- Bug fixing
Kotlin External API Integration Spring boot React.js Java
Ecomaison
Full Stack Developer Kotlin/ React
May 2023 - May 2025 (2 years)
Paris, France
DescriptionEcomaison is the eco-organization for the home sector, approved by the State. It organizes collection, sorting, repair, and reuse.

The mission involves developing
A repair application that allows certified repairers to request a repair bonus based on the repair performed.
A collection support application that allows submitting a support request to calculate and obtain support payments.

Work performed
• Analysis and study of specifications.
• Technical and business design.
• Implementation of the support request workflow
• Declaration of financial and operational support through scope, tonnage, and material balance pages, as well as supporting documents
• Calculation of different support payments based on declared tonnages after validation of supporting documents
• Workflow modification
• Creation and updating of reusable front-end components (Carousel, Table, Pagination, InputFile, InputSiret, Alert, menu, select…)
compliant with accessibility standards
• Implementation of the Dashboard page
• Implementation of Route Leaving Guard to prevent page exit without saving

Environment
Development languages: Kotlin, TypeScript
Development framework: Spring Boot, React Hooks, React Query, Maven, JPA, Hibernate, Web Api Rest, Microservices Architecture, JUnit, SonarQube, React Testing Library, Jest
Database: PostgreSQL
Tools: IntelliJ IDE, Postman, GitLab, Jira, Swagger
Methods: Agile Scrum, TDD, clean code, hexagonal architecture, BDD
Heavenize
Full Stack Developer Java/ React
April 2022 - April 2023 (1 year)
Paris, France
The mission involves developing a PRE-IPO asset management application from scratch that allows companies to invest in the stock market.

Work performed:
 Analysis and study of specifications.
 Technical and business design.
 Management of security & company tables, Target Data, Peer Data, trade Booking, and Event Booking
 Database table audit
 Implementation of Hibernate Search with Lucene
 Development of attribute converters
 Calculation of company valuation using the DCF and Multiple methods
 Ensuring unit and integration tests with Junit
 Implementation of dynamic components (table, form…) with React
 Configuration of a CI/CD pipeline with Azure DevOps and AWS for resource creation with Terraform
 Configuration of a CI/CD pipeline with Azure DevOps/AWS for application code deployment

Environment:
Development languages: Java 8, TypeScript
Development framework: Spring, Java 8, Maven, JPA, Hibernate, SQL Server, Assembla, Junit, React
Database: SQL Server
Cloud platforms: Azure Active Directory, Azure Key Vault, OpenID, Azure DevOps
Tools: Eclipse, Postman, GitLab, Jira
Methods: Agile Scrum, TDD
React.js Java Spring boot TypeScript TDD/BDD

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Diploma
National Engineering School of Sfax
2018
Bac+5
Diploma in
Preparatory Institute for Engineering Studies of Sfax (MP)
2015
Bac + 2

Olfa B.

Full stack developer Java/ Kotlin/ React

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