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Lamine SefaceneLS

Lamine Sefacene

Supermalter

Full Stack Developer

€422/day
3 projects
Rennes, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Lamine

Passionate lead developer with over seven years of expertise in Java and Angular, orchestrating strategic technical refactors and motivating teams on complex projects. Driven by innovation, I have established best practices to ensure robust and scalable code. Seeking a new challenge, I aim to leverage my leadership and creativity to design high-impact solutions and propel the company to new heights.
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Rennes (up to 50km), Nantes (up to 10km), Paris (up to 10km), Bordeaux (up to 10km), Lille (up to 10km)

Experience

  • Klee Group
    Full Stack Developer
    DIGITAL AND IT
    November 2025 - Today (7 months)
    Nantes, France
    • Migration of the Java 11 application to Java 21 (LTS), ensuring the modernization of the technical stack and compatibility with the latest language features.
    • Development and optimization of Elasticsearch queries to improve performance and relevance of results.
    • Estimation of new client requirements, contributing to workload assessment and sprint planning.
    • Design and development of all integration tests, bringing code coverage to 75% and ensuring the reliability and non-regression of features.
    Elasticsearch Integration Test Spring boot PostgreSQL Java 21
  • Vite loué Location de voiture
    Full Stack Developer (Freelance)
    AUTOMOBILE
    March 2025 - August 2025 (5 months)
    Rennes, France
    • Design and implementation of a web management application (vehicles, clients, reservations) based on a microservices architecture.
    • Definition and integration of REST APIs ensuring consistency, security, and performance of inter-service communication.
    • Front-end development using Angular, in compliance with the client's design system and UX/UI standards.
    • Application of best development practices: unit tests (JUnit), code reviews, optimization, and continuous improvement.
    • Close collaboration with the client to prioritize functional evolutions and adjust deliverables according to business needs.
    • Monitoring of the development cycle via a dedicated dashboard and contribution to technical documentation.
    Java17 Angular 17 Microservices PostgreSQL Spring boot
  • Orange
    Technical Lead
    TELECOMMUNICATIONS
    February 2024 - November 2024 (10 months)
    Rennes, France
    • Technical leadership of a team of 5 developers, including deliverable tracking, code reviews, and pair programming.
    • Full-stack development and evolution of features in a microservices architecture, utilizing GitLab Copilot.
    • Management of Application Maintenance and Support (TMA) for the application scope.
    • Architectural work to modernize and secure critical IS components.
    • Facilitation of project rituals, steering committees, and client interactions.
    • Estimation of new business requirements.
    Java 17 Angular 17 Gitlab CI/CD Microservices Oracle

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Education

  • Master 2 (M2), Ingénierie logicielle
    Université de Rennes I
    2019
    Master 2 (M2), Ingénierie logicielle

Skill set

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