IDFreelancer profile translated to English.
Back to original languageAbout Iliassou
Fullstack Developer Java | Angular | DevOps
Nearly 5 years of experience in backend and frontend development, with expertise in Java (Spring Boot, Spring Data), Angular, Flutter.
DevOps skills, with mastery of Docker, Kubernetes, CI/CD (Jenkins, GitLab), monitoring (Grafana, Prometheus) and process automation.
Experience in demanding sectors such as telecommunications (SFR) and medical imaging (CASIS), with a focus on complex architectures, transaction management, and client-server systems.
Passionate about performance optimization, deployment industrialization, and production system reliability.
What I can offer you:
Solid backend development in Spring Boot, with expertise in transaction management, Java migration, and performance optimization.
Frontend development with Angular, ensuring a modern, intuitive, and performant interface.
Automation and DevOps, implementing CI/CD pipelines, containerization with Docker/Kubernetes, and integration of monitoring tools.
Optimization and management of databases (Oracle, PostgreSQL, MySQL), with PL/SQL scripts and caching solutions (Redis).
Technical documentation and team support, with guides and best practices for smooth integration of new members.
Available for freelance missions: do not hesitate to contact me to discuss your project!
French
Native or bilingual
English
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- CATSExpert DeveloperAugust 2025 - Today (10 months)Fullstack Developer, I support developers and teams in their technical progression.Specialized in mentoring, support, and training, I intervene on frontend, backend, and DevOps issues.I help to unblock complex situations, improve code quality, and structure solid projects.Concrete, results-oriented approach and rapid skill development.
- CASISFull-stack DeveloperMEDICALSeptember 2021 - September 2024 (3 years)21000 Dijon, FranceDesign and Development: Participation in the design and study of the client-server solution for our application. Preparation and planning of the architecture, as well as network exchanges. Development of the client part of our server in Angular and Qt C++. Implementation of database models using MySQL, PostgreSQL, and SQLite.Infrastructure Setup: Creation of the web server in Java SpringBoot, providing a solid foundation for backend operations. Configuration and use of Docker to generate a base for the client part, facilitating testing and deployment. Implementation of an observability architecture for effective server monitoring.Testing and Quality Assurance: Conducting thorough tests with JUnit and Mockito to ensure application reliability and robustness. Use of OpenAPI (formerly Swagger) to test and validate APIs.Maintenance and Optimization: Continuous management of the API server to ensure its performance and security. Regular maintenance of the administration interface in Angular and our QIR application in C++ with QtCreator, ensuring its proper functioning and updates. Implementation of our client on Angular 17 for our authorization management interface for doctors.Deployment: Efficient deployment of the web server using Docker and Jenkins tools, ensuring a smooth and automated delivery process.
- SFRFull Stack Developer ConsultantTELECOMMUNICATIONSOctober 2024 - August 2025 (10 months)Paris, FranceBACKEND DEVELOPMENT
- Refactoring and optimization of existing mechanisms to improve file loading and transaction valorization.
- Development and maintenance of backend services in Spring Boot and Spring Data, ensuring transaction management between operators.
- Migration from Java 17 to Java 21, with code adaptation and correction of incompatibilities to ensure project stability.
- Execution of unit tests with JUnit and Mockito, to ensure software quality and reliability.
PROCESSING AUTOMATION AND ERROR MANAGEMENT- Automation of data extractions and processing via Bash scripts, optimizing integration and file management.
- Development of PL/SQL procedures to automate the processing of IPE files, including control, validation, and insertion of data into the Oracle database.
- Implementation of a CI/CD pipeline enabling automated deployment of developments to Nexus, followed by deployment in PFV or production, ensuring a smooth and secure delivery cycle.
ENVIRONMENT CONFIGURATION, CONTAINERIZATION• Setup of WSL to have a Linux environment, facilitating Docker image builds and the execution of project-required tools.• Creation of a Docker image for Java 21 during migration, writing an adapted Dockerfile and integrating required security certificates to ensure compliance and compatibility with CI/CD pipelines.• Deployment and use of Portainer via Docker, launching Docker images to perform tests and validate configurations using Docker Compose.TECHNICAL DOCUMENTATION• Writing comprehensive documentation in the form of a welcome booklet, describing:• Installation steps for necessary tools for newcomers.
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Education
- Master I & Master II BDIA (Databases and IntelligenceUniversity of Burgundy Dijon2024Master I & Master II BDIA (Bases de Données et Intelligence
- COMPUTER SCIENCE DEGREEUniversity of Burgundy Dijon2022LICENCE INFORMATIQUE