Freelancer profile translated to English.
Back to original languageAbout Olivier
I am an application architect, certified Java & Spring expert, full-stack developer, and professional trainer.
For over 20 years, I have been helping my clients design and develop modern and high-performance applications, migrate and optimize their legacy systems, and improve their practices with a benevolent, rigorous, and results-oriented approach.
My services
- Architecture and scoping of new projects
- Assembling technical stacks, carrying out POCs and MVPs
- Modernization and debt reduction of legacy systems
- Full-stack development
- Transition CTO / VP Eng. for startups
- Professional training in Java expertise
Recent achievements
- Les Furets: audit and refactoring of the monolith into microservices deployed on the cloud, pedagogical support for the teams.
- Kubo Labs (startup): architecture and development of 2 SaaS products around Kubernetes.
- Assembly of new technical stacks for Accor Hotels and Caisse des Dépôts (pensions).
- Modernization and optimization of critical applications at Evollis, RATP Smart Systems, Lifen.
- Professional training for Java experts at Mirakl, France Travail DSI, Lectra.
My expertise
- Application architecture: microservices, cloud-native, full-stack
- Java & Spring expertise: audit, performance, and training
- Web development (React or Angular)
- Technical leadership: best practices, software quality, technological watch, conferences
- "Masterclass Java Expertise" training (4.95/5, 200+ experts trained)
My strengths
- 20+ years of experience
- Global vision of projects: IT, Business, Legal, Marketing...
- Autonomy, initiative, pragmatism, and results-driven culture
- Technological watch and continuous learning
- Recognized teaching skills, synthesis ability, and proposal strength
- Professional communication in French and English
Shall we discuss your projects?
English
Fluent
French
Native or bilingual
Can work on-site
Bordeaux (up to 50km), Paris (up to 50km), Lyon (up to 50km), Nantes (up to 50km), Lille (up to 50km)
Experience
- FRANCE TRAVAILSenior ArchitectPUBLIC SECTORSeptember 2025 - June 2026 (9 months)Mérignac, FranceFrance Travail's message exchange service (PSE) develops and operates inter-application message buses that allow internal and partner applications to exchange over 100 million messages per day.As part of an ambitious technical modernization project for the platform, I was primarily involved in:- The architecture of new Kafka-based buses,- The development and optimization of their satellite applications (deposit/routing/delivery),- The design and development of the new Events Portal, a self-service gateway for creating and managing topics that carry new events.
- LesFuretsSenior Application ArchitectBANKING AND INSURANCEAugust 2023 - February 2025 (1 year and 6 months)Paris, FranceLesFurets is an online insurance comparator.As an Architect reporting to the CTO, I:- Audited the historical monolith,- Proposed a transformation plan towards macro-services on Google Cloud,- Assembled the new technical foundation (Java 21+, Spring Boot, React, Keycloak),- Created prototypes and sample applications,- Assisted in migrating the first features,- Rewrote the pricing engine (which calls partner insurance companies) in a modular and optimized way,- Participated in upskilling the teams on these technologies (mentoring, documentation, internal conferences, inviting speakers for BBLs).The goal was to improve the application's performance, facilitate its maintenance (especially by external service providers), and drastically reduce the time-to-market for new features by giving more control to the business units.
- Kubo LabsSenior Application ArchitectSOFTWARE PUBLISHINGMay 2021 - January 2023 (1 year and 8 months)Paris, FranceKubo Labs offers products (SaaS or on-premises) for installing, auditing, and monitoring Kubernetes clusters.As the Lead Architect and Developer, in direct contact with the founder, I:- Architected and developed (back & front) KuboSetup and KuboScore, which install and monitor Kubernetes clusters on major clouds or on-premises.- Developed a custom task execution engine.- Developed a log streaming system to the web UI.- Implemented Stripe integration for online payments.- Participated in the development of KuboVisor (cluster supervision) and several internal tools.KuboSetup, KuboScore, and KuboVisor are now successfully marketed by Kubo Labs.Check them out, these products are cool and useful!
Reviews
Recommendations
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Education
- Computer Science EngineerEFREI2002
Certifications
- Sun Certified Java ProgrammerSun Microsystems
- SpringSource Certified Spring DeveloperPivotal