Freelancer profile translated to English.
Back to original languageAbout Aurelien
Freelance engineer specializing in Java/Spring Boot, cloud architecture, and DevOps, with over 10 years of experience (France & international). I support companies in the design, redesign, and delivery of high-performance on-premise and cloud solutions.
Advanced mastery of Java 21, Spring Boot 3+, AWS, Docker, Kubernetes, CI/CD, Angular, and React Native.
Pragmatism, efficiency, and results-oriented approach to serve your projects.
English
Fluent
French
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- XELIANSTech Lead / ArchitectSOFTWARE PUBLISHINGDecember 2022 - Today (3 years and 8 months)Paris, FranceWeb application for managing legal registers https://www.izikap.fr/ (securities movements, decisions, general meetings), integrating electronic signature, digital safe, and integration API. Team: 6 developers, 1 tech lead, 2 POs, 2 QAs.**Role**:
- Design of the technical architecture and setup of projects from scratch.
- Mentoring and coaching of teams (front/back), training in best practices and technological watch.
- Creation of a containerized local environment to simplify integration between front and back teams.
- Definition and monitoring of the testing and software quality strategy.
- Implementation of multiple authentication methods: API Key, JWT, SSO.
- Proactive maintenance: regular version upgrades, CVE monitoring, and security patches.
- Setup and maintenance of CI/CD pipelines: Jenkins → migration to GitHub Actions, workflow templating, release automation.
- Supervision and maintenance of environments (dev, staging, prod).
- Close collaboration with CPO and technical management: strategic decisions, proposals, and presentation of robust solutions.
- Active participation in agile management: sprint planning, coordination, and technical leadership.
**Impact**:- Implementation of a clear software architecture and development standards (Java, Angular, Spring) ensuring quality, maintainable, and scalable code.
- Technical leadership and implementation of methodologies (architecture, best practices, testing strategy) → enabling a sustained and regular development pace while limiting technical debt.
- Adoption by numerous major clients in a sensitive environment (legal register and compliance).
**Tech stack**: Java 21, Spring Webflux, Postgresql, Angular 19, Kubernetes, Helm chart, Argocd, grafana, S3, Github Action, Spring batch. - XELIANSTech Lead / ArchitectSOFTWARE PUBLISHINGSeptember 2019 - Today (6 years and 11 months)Paris, FranceDesign and development of a modular ETL https://www.xelians.fr/nos-logiciels/xelians-archives-management/xelians-data-hub/ (data collection, transformation, and transfer), deployed in SaaS and on-premise modes. Team: 6 developers, 1 tech lead, 2 POs, 2 QAs.**Role**:
- Design and setup of the Datahub from scratch (Java 21, Spring Boot WebFlux, Angular 19).
- Definition of the software architecture (clustered, modular, scalable), taking into account SaaS and on-premise constraints.
- Design of an extension mechanism via plugins published on Maven Central https://github.com/Xelians/datahub-studio, adopted by several clients.
- Writing of technical documentation (architecture, installation, operation).
- Management of application security: user/organization isolation, multiple authentication methods (API Key, JWT, SSO).
- Proactive maintenance: regular version upgrades, CVE management, and security monitoring.
- Support and assistance to on-premise clients for installation and operation.
- Participation in tenders and pre-sales, in direct contact with technical directors and client architects.
**Impact**:- Deployment of a scalable, robust, and highly configurable solution, adapted to various needs (public sector and large private companies).
- Documented and standardized architecture, facilitating on-premise installations and SaaS operation.
- Easy adoption and customization thanks to the third-party plugin mechanism, strengthening the product ecosystem.
- Harmonized and automated CI/CD pipelines, accelerating deployments on different environments and projects.
- Recognized as a technical reference for clients (pre-sales, scoping, architecture recommendations).
**Tech stack**: Java 21, Spring Webflux, Postgresql, Angular 19, Kubernetes, Helm chart, Argocd, grafana, Github Action, Spring batch, Activemq. - WIINUPWIINUP DevelopmentSPORTSNovember 2023 - January 2024 (2 months)Paris, FranceMobile application for finding sports partners, organizing games, and interacting through social features.**Functional**:
- Search and connection between sports partners.
- Integration with partner clubs for event management.
- Social aspect: add friends, create games, activity feed, real-time chat.
- Location of players and events to facilitate connection.
**Role**:- Cross-platform mobile development in React Native with Expo (iOS & Android).
- Backend: Java 21 / Spring WebFlux, WebSocket, Stompl, PostgreSQL.
- CI/CD: automation of mobile and backend builds.
- Provisioning and deployment: AWS + Terraform + Ansible, Docker containerization.
- Complete management of the application lifecycle (design, development, infrastructure, deployment).
**Impact**:- Production release of a functional mobile application with real-time chat and advanced social features.
- Full-stack end-to-end development (mobile + backend + infrastructure).
- Strengthened my expertise in DevOps (Terraform/Ansible/Docker) and real-time mobile/backend integration.
**Tech stack**: Java 21, Spring Boot, Spring Batch, React native, Expo, Postgresql, Aws Ecs, Google Geoloc API + map, Stomp, Ansible, Terraform (Google,Apple,Facebook) connect.
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Education
- Master of Electrical & Computer Engineering / Minor in Computer ScienceGEORGIA INSTITUTE OF TECHNOLOGY2013Master Electrical & Computer engineering/ Minor Computer Science
- Engineering degree in Computer Science and Applied MathematicsENSEEIHT2012Diplome d'ingénieur en informatiques et mathématiques appliquées