David Arsene

Development and maintenance of the OVHcloud Control Panel, a large-scale micro-frontend ecosystem — international context.

• Team leadership — Lead developer for a feature team of six; focus on technical excellence and cross-functional collaboration.
• Architecture & innovation — Designed and rolled out new React-based micro-frontend applications.
• Legacy migration — Led the progressive migration of legacy modules to a modern React stack; addressed critical security issues and improved Web Core Vitals (LCP, FID, CLS).
• Quality engineering — End-to-end testing strategy (unit, integration, E2E) with Vitest and Playwright; cut production regressions by about 50%.
• Technical governance — Facilitated backlog grooming and technical refinement so architecture choices stayed aligned with product goals.

Management & modernization of the Training Information System application portfolio.

Portfolio modernization

• Agile leadership — Scrum Master for rituals and delivery flow; mentored new hires to speed up onboarding.
• Modernization — Broke down legacy monoliths into RESTful microservices (Spring Boot, Micronaut), improving data sync across CRM, ERP, and LMS.
• Framework upgrades — Led major migrations (Grails 3 → 4, Angular 8, Bootstrap 4) for long-term maintainability and security.
• Database migration — Moved the data layer from MS SQL Server to MariaDB to reduce cost and improve performance.
• Observability & auditing — Introduced APM (Glowroot) and Hibernate Envers, improving incident diagnosis and data traceability.

Custom ERP (greenfield)

• Architecture — Defined the technical blueprint and stack for a full enterprise-grade ERP.
• Full-stack engineering — Built the web app from scratch with Grails (JEE) and AngularJS/Angular, using TDD.
• DevOps & automation — Set up CI/CD (Jenkins, Artifactory, SonarQube) for automated testing and delivery.
• Document engineering — Custom document-generation engine (XdocReport, Velocity); business users could adjust templates with far less dependency on IT for each change.
• Business automation — Automated billing flows: shorter invoicing cycle, fewer manual steps, and fewer routine errors in the process.
• Security & access control — Remote access hardened with Apache SSL and certificate-based auth for external partners.

Telecoms

French national online tax filing systems

• Development — Core flows for online income tax filing and document rendering (HTML/PDF) for taxpayers.
• Infrastructure — JBoss / Java / Maven upgrades and migration of version-control tooling.