Freelancer profile translated to English.
Back to original languageAbout Montassar
Java / Spring Boot Developer – Backend Expert with 10 years of experience
Passionate about backend development for nearly 10 years, I support companies in the design, implementation, and optimization of their Java / Spring Boot applications.
My background has allowed me to participate in numerous projects in agile contexts (Scrum), particularly in the payment sector, where reliability, performance, and security are essential.
Key technical skills:
Languages and frameworks: Java EE, Spring Boot, Spring Batch, Spring Data, Spring Security
APIs & microservices: REST API design and implementation, microservices architecture, inter-service communication
Testing & quality: JUnit, unit and integration tests, code coverage, clean code best practices
Databases: SQL (Oracle, PostgreSQL, MySQL), query optimization, persistence management via JPA/Hibernate
Continuous integration: Maven, Jenkins, GitLab CI/CD, SonarQube
IDEs & tools: IntelliJ IDEA, Postman, Swagger/OpenAPI, Git
Methodology: Agile / Scrum – teamwork, code reviews, frequent integration
I am always motivated to take on new technical challenges and contribute to the success of your projects!
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- MonextJAVA/EE Design & Development EngineerBANKING AND INSURANCEApril 2022 - Today (4 years and 2 months)Aix-en-Provence, FranceDeveloper within a Java squad dedicated to designing innovative payment solutions for banks and fintechs (Card-as-a-Service).Participated in the design, development, and integration of secure microservices, as well as the setup and optimization of Spring Batch jobs in a Spring Boot and Agile (Scrum) environment.Carried out various tasks ranging from technical design, development, and application maintenance, to writing unit tests (JUnit) and continuous code improvement.Languages & tools: Java EE, Spring Boot, REST API, Hibernate/JPA, SQL, Spring Batch, IntelliJ IDEA, Postman, Git, continuous integration (Jenkins, Maven...).
- AGIRC-ARRCOJAVA/EE Design & Development EngineerPUBLIC SECTORApril 2021 - April 2022 (1 year)Aix-en-Provence, France**Context**: Complete overhaul of the pension processing system for private sector employees, aiming for modernization and application performance optimization.**Project**: Development of a new pension payment program, at the end of the decision-making chain, with the main objective of significantly reducing processing time and ensuring operational reliability.Project team: 10 people (Agile / Scrum methodology).**Work Performed**:Analysis and modeling of existing business processes.Backend design and development in Java EE / Spring Batch for automated processing and payment scheduling.Writing and execution of unit tests (JUnit) ensuring code quality and robustness.Code review and application of best practices via SonarQube.Continuous integration and automated deployment with Jenkins.Close collaboration with functional and technical teams in an Agile environment.**Technical Environment**:Java EE, Spring Batch, SOAP, Oracle, JUnit, SonarQube, Git, SVN, Jenkins, Eclipse, SCRUM.
- HCube ConseilJAVA/EE Design & Development EngineerTRANSPORTATIONMarch 2020 - April 2021 (1 year and 1 month)Aix-en-Provence, FranceProject 1**: Maintenance and support for the **GPMM (Grand Port Maritime de Marseille)application, software for managing ship calls between Marseille and Fos.• Writing technical and functional documentation• Code review• Bug fixing• Modification of JPA NamedQuery• Proposing new features to addEnvironment: GWT, EJB 3.1, SoapUI, Hibernate 4, Oracle, Spring Security, Junit Eclipse, Maven, JBoss**Project 2**: Evolution and modernization of the website www.infogreffe.fr (**Docaposte**)- Integration of the Legalstart Client Iframe into the infogreffe website- Involvement in the development phases of new features for the www.infogreffe.fr website- Implementation of unit tests and integration tests- Preparation and deployment on various testing environments- Analysis and correction of anomalies during testing phasesEnvironment: JAVA/EE, Spring, REST-API, SOAPUI, Hibernate, JSF/PrimeFaces
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Education
- Java/J2EE Designer/Developer Certificate2016Attestation Concepteur/Développeur Java/J2EE
- National Engineering Diploma in Computer Science2015Diplôme National d'ingénieur en Informatique