Houssem Mekhelbi

- Lead backend architecture for ANS-regulated MSSanté SMTP/IMAP pipelines supporting **453 domains and 5,493 email addresses**; review PRs, make architecture decisions, and coordinate with clients within a four-person team. - Supported **206,237 messages from Jul 1–Aug 5, 2026** and maintained **98% uptime over three months**; ANS reported **more than 94% success**, with most remaining DMP rejections caused by invalid or retired client-supplied codes. - Deliver approximately every two weeks with a deploymen

- Selected to customize Bonitasoft Studio for the requirements of a specific enterprise client. - Added and maintained **three purpose-specific REST APIs** supporting Salesforce integration. - Optimized large-dataset processing to preserve fast response times and efficient resource usage. - Delivered with a three-person client-focused unit within a broader team of approximately 15 people. - Built and validated the customization using Java 11, Spring Framework, PostgreSQL, JUnit, Testcontainers, Maven, and G

- Maintained and extended France's ROR national healthcare-resource directory in a seven-person team, across a growing codebase of **30+ modules and 130+ REST endpoints**. - Contributed to a platform that, according to ANS, describes **92% of French healthcare establishments** and feeds **30+ connected applications** supporting orientation, care coordination, capacity monitoring, and bed availability. - Reduced database load and improved responsiveness and processing time through JDBC `FetchSize`, batch/bul

- Improved client-perceived Orange Selfcare and Marketplace response and loading time by **25%** by optimizing data responses, PostgreSQL queries, and Redis caching. - Contributed as a junior backend developer across a **10-service Java 11 / Quarkus / Spring backend** within a six-person backend team and a 17-person project team. - Worked on Kafka event processing that handled approximately **5,000 events per second on average** and peak bursts of up to **12,000 events per second** during sales events. - Co

- Delivered the HOLDUP banking-comparison application from architecture through deployment during a six-month graduation project. - Built a Spring Cloud microservices backend using Eureka, Zuul, Ribbon, and OAuth2. - Developed REST APIs with unit and integration tests and containerized the application with Docker. - Built VueJS and NuxtJS dashboards supporting end-to-end user workflows.