David BEN KHEMIS

Fullstack Developer at Glady Contributed to the development and enhancement of Glady’s Gift (gift card) services, working on both backend microservices and frontend (micro-front) interfaces to improve user experience and scalability. Technologies: - Back-end: Java (Spring Boot), REST APIs, Microservices - Front-end: Angular, TypeScript, Design System, HTML/CSS - AWS Key Responsibilities: - Designed and developed new backend features and improved existing APIs within the Gift domain microservices. - Collaborated with cross-functional teams (Product, Design, Frontend, and Backend squads) to ensure smooth functional and technical integration. - Refactored and rebuilt several frontend pages using Angular and the company’s design system, based on updated UX/UI mockups. - Contributed to improving code quality, maintainability, and overall performance through technical optimizations and best practices.

Full Stack Developer Consultant at SOLUTEC 1-year mission at SFR on the development of the Référentiel Global du Terrain application — a platform dedicated to managing network equipment. Technologies: - Back-end: PHP (Symfony, Doctrine), Java - Front-end: Angular (TypeScript), Vanilla JavaScript - DevOps: CI/CD, Kubernetes, Docker Key Responsibilities : - Co-led the Angular project and contributed to front-end architecture decisions - Designed and implemented reusable Angular components to standardize development across the team - Developed custom Angular filters to optimize data display and management - Integrated and maintained native JavaScript features for specific front-end functionalities - Refactored and modernized legacy PHP and JavaScript codebases to improve performance and maintainability - Ensured application stability through bug fixes and operational maintenance (MCO) - Developed new features and enhancements on the PHP stack (Symfony/Doctrine) - Actively participated in technical discussions and code reviews - Proposed architectural improvements and best development practices - Presented technical solutions and helped define coding standards for the team

Back-end Developer at Hospitalink Contributed to the design, development, and deployment of microservices and REST APIs using JakartaEE and JPQL. Technologies: JakartaEE, Quarkus, Hibernate, Keycloak, Kafka, NestJS (TypeScript), GitLab CI/CD, Docker, Kubernetes, OVH, Google Cloud Key Responsibilities : - Developed and maintained microservices and REST APIs using JakartaEE and JPQL - Implemented unit tests, performed debugging, and documented technical components - Set up and optimized GitLab CI/CD pipelines for continuous integration and deployment - Deployed applications to test and production environments (OVH, Google Cloud) - Leveraged Quarkus and Hibernate frameworks with open-source technologies such as Keycloak and Kafka - Participated in the back-end refactoring of the platform using NestJS and TypeScript to modernize the architecture

Redesigned both the back-end and front-end of a web application featuring an interactive map displaying all water samples collected by FIRALIS. Technologies: Back-end: Spring MVC, Hibernate, Java Front-end: Leaflet, Highcharts, JavaScript Infrastructure & Deployment: AWS Elastic Beanstalk (EBS) Key Responsibilities: - Rebuilt and optimized the web application’s architecture and data management layer - Developed interactive charts for data analysis and improved UX for navigation and visualization - Managed the deployment and production setup of the application on AWS EBS

Developed a web application serving as a “virtual clinic” using PHP and JavaScript. The platform enabled video calls, doctor search by criteria, appointment scheduling, and user authentication for both patients and healthcare professionals. Technologies: PHP, JavaScript, WebRTC, MySQL, HTML/CSS Key Contributions: Designed and implemented core features such as video consultation, appointment booking, and user management - Developed the search system allowing patients to find doctors based on specific criteria - Built secure login and registration flows for healthcare professionals and patients - Contributed to both front-end and back-end development to deliver a complete end-to-end solution