Freelancer profile translated to English.
Back to original languageAbout Bill Williams
I develop complete and reliable web applications, from frontend design to backend architecture, using Angular and Spring Boot. I have experience in creating custom UI components with Angular Material and Bootstrap, and in implementing secure services with OAuth2.
I automate builds, tests, and deployments using Jenkins and Docker, while ensuring code quality with SonarQube. My projects include solutions for project tracking, traceability, and sensitive data management, intended for end-users.
I can contribute to full-stack development projects, CI/CD integration, and web application optimization to ensure robustness and performance.
French
Native or bilingual
English
Conversational
Can work on-site
Paris (up to 50km)
Experience
- Canal +Full Stack Developer (Angular / SpringBoot)PRESS AND MEDIAMarch 2024 - December 2025 (1 year and 9 months)Issy-les-Moulineaux, FranceComplete redesign of the Canal+ group's broadcast program lifecycle management intranet, from acquisition to broadcasting. The application covers several functional areas: management of acquisition contracts, programming planning, and multi-platform broadcast monitoring. Worked within an agile team on a modern technical stack.
Backend Development (Java 21 | Spring Boot):
- Development of secure and performant RESTful APIs.
- Implementation of access management to secure endpoints.
- Refactoring of the persistence layer: Rewriting hardcoded SQL/JPQL queries to dynamic and type-safe QueryBuilders (JPA Criteria API or QueryDSL) to improve maintainability and security.
- Implementation of distributed caching strategies with Redis to optimize response times.
- Integration and configuration of Elasticsearch for efficient data indexing and searching.
- Development of asynchronous batch processing via Spring Batch.
- Writing unit tests with JUnit 5 and Mockito.
- Design and development of Spring Boot batches for daily integration of financial flows (CSV/XML).
- Performance optimization through chunk parameterization and multi-threaded processing implementation.
- Ensuring data reliability through the implementation of automatic Skip and Retry policies.
Frontend Development (Angular 14, 18)
- Design and development of modules within a Micro-frontend architecture to ensure team independence and scalability.
- Implementation of user interfaces with Angular.
- Use of services to interact with the backend API.
- Performance optimization (lazy loading, memoization, etc.).
- Migration from Angular 14 to Angular 18.
- Viveris - NuclétudeFull Stack Developer (Angular / SpringBoot)DIGITAL AND ITOctober 2022 - January 2024 (1 year and 3 months)Boulogne-Billancourt, FranceDevelopment of a project balance management solution for tracking deadlines, costs, and building lessons learned.
Backend Development (Java, Spring Boot):
- Design and creation of JPA entities for data persistence in PostgreSQL.
- Implementation of a complete REST API for CRUD operations and project balance management.
- Securing services with Spring Security and OAuth2 for authentication and authorization.
- Database migration management with Flyway.
- Writing unit and integration tests with JUnit, Mockito.
- Industrialization and CI/CD with Jenkins: automation of builds, tests, and deployments to development, acceptance, and production environments, integration of Docker, and code quality monitoring with SonarQube.
Frontend Development (Angular):
- Design and development of responsive and accessible user interfaces for product tracking.
- Creation of custom and reusable components using Angular Material Design, ensuring a fluid and consistent user experience.
- Integration of complex forms and dynamic components.
- Consumption of secure REST APIs provided by the backend to display real-time traceability information.
- Implementation of frontend unit tests with Jasmine/Karma to ensure the reliability of components and services.
- Optimization of code performance and maintainability through Angular best practices (lazy loading, modularization, shared services).
- CI/CD configuration with GitLab for deployments to development, acceptance, and production environments.
- IBMFull Stack Developer (Angular / SpringBoot)TECHOctober 2020 - September 2022 (1 year and 11 months)Bois-Colombes, FranceDevelopment of a food traceability platform to track product information throughout the supply chain.
Backend Development (Java, Spring Boot):
- Development of robust REST services for managing product information and traceability transactions.
- Implementation of a modular and secure architecture enabling communication between the frontend and the database.
- Implementation of backend unit tests with JUnit and Mockito to ensure the quality and reliability of services.
- Use of GitLab CI/CD to automate builds, tests, and deployments to development and production environments.
- Containerization of backend services with Docker, facilitating deployment and scalability.
Frontend Development (Angular):
- Design and development of responsive and accessible user interfaces for product tracking.
- Creation of custom and reusable components using Angular Material Design, ensuring a fluid and consistent user experience.
- Integration of complex forms and dynamic components.
- Consumption of secure REST APIs provided by the backend to display real-time traceability information.
- Implementation of frontend unit tests with Jasmine/Karma to ensure the reliability of components and services.
- Optimization of code performance and maintainability through Angular best practices (lazy loading, modularization, shared services).
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Education
- EngineerEfreiIngénieur
- 1st year of engineering cycle3IL Ingénieur1ère année cycle ingniéur