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I'm Laurent ROSA-ARSENE, a results-driven Senior Java Developer with 15+ years of experience designing, developing and integrating robust, scalable applications across banking, telecom, fintech, healthcare and energy sectors. I have a strong command of Java (8-21), Spring ecosystem, Kubernetes and event-driven architectures, delivering solutions from legacy modernization to cloud-native platforms. I enjoy collaborating with cross-functional teams and I’m passionate about clear architecture, clean code, and comprehensive documentation. I also lead AI-assisted development initiatives, integrating LLMs and autonomous coding workflows to accelerate delivery, while maintaining a solid DevOps mindset across CI/CD, containerization, IaC, and security. I thrive in fast-paced environments, value technical mentorship, and continuously document procedures and best practices to empower teams.…I'm Laurent ROSA-ARSENE, a results-driven Senior Java Developer with 15+ years of experience designing, developing and integrating robust, scalable applications across banking, telecom, fintech, healthcare and energy sectors. I have a strong command of Java (8-21), Spring ecosystem, Kubernetes and event-driven architectures, delivering solutions from legacy modernization to cloud-native platforms. I enjoy collaborating with cross-functional teams and I’m passionate about clear architecture, clean code, and comprehensive documentation. I also lead AI-assisted development initiatives, integrating LLMs and autonomous coding workflows to accelerate delivery, while maintaining a solid DevOps mindset across CI/CD, containerization, IaC, and security. I thrive in fast-paced environments, value technical mentorship, and continuously document procedures and best practices to empower teams.

Laurent ROSA-ARSENE

Back-End Developer, Full Stack Developer, Web Developer, +2

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I'm Laurent ROSA-ARSENE, a results-driven Senior Java Developer with 15+ years of experience designing, developing and integrating robust, scalable applications across banking, telecom, fintech, healthcare and energy sectors. I have a strong command of Java (8-21), Spring ecosystem, Kubernetes and event-driven architectures, delivering solutions from legacy modernization to cloud-native platforms. I enjoy collaborating with cross-functional teams and I’m passionate about clear architecture, clean code, and comprehensive documentation. I also lead AI-assisted development initiatives, integrating LLMs and autonomous coding workflows to accelerate delivery, while maintaining a solid DevOps mindset across CI/CD, containerization, IaC, and security. I thrive in fast-paced environments, value technical mentorship, and continuously document procedures and best practices to empower teams.…I'm Laurent ROSA-ARSENE, a results-driven Senior Java Developer with 15+ years of experience designing, developing and integrating robust, scalable applications across banking, telecom, fintech, healthcare and energy sectors. I have a strong command of Java (8-21), Spring ecosystem, Kubernetes and event-driven architectures, delivering solutions from legacy modernization to cloud-native platforms. I enjoy collaborating with cross-functional teams and I’m passionate about clear architecture, clean code, and comprehensive documentation. I also lead AI-assisted development initiatives, integrating LLMs and autonomous coding workflows to accelerate delivery, while maintaining a solid DevOps mindset across CI/CD, containerization, IaC, and security. I thrive in fast-paced environments, value technical mentorship, and continuously document procedures and best practices to empower teams.

Available to hire

I’m Laurent ROSA-ARSENE, a results-driven Senior Java Developer with 15+ years of experience designing, developing and integrating robust, scalable applications across banking, telecom, fintech, healthcare and energy sectors. I have a strong command of Java (8-21), Spring ecosystem, Kubernetes and event-driven architectures, delivering solutions from legacy modernization to cloud-native platforms. I enjoy collaborating with cross-functional teams and I’m passionate about clear architecture, clean code, and comprehensive documentation.

I also lead AI-assisted development initiatives, integrating LLMs and autonomous coding workflows to accelerate delivery, while maintaining a solid DevOps mindset across CI/CD, containerization, IaC, and security. I thrive in fast-paced environments, value technical mentorship, and continuously document procedures and best practices to empower teams.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

French

Fluent

English

Advanced

Spanish; Castilian

Beginner

Work Experience

Independent Developer – AI-Assisted Development at Independent / Personal Projects

January 1, 2025 - February 1, 2026

Independent developer focusing on AI-assisted development, LLM integration and autonomous coding workflows; building commercial platforms and exploring AI-assisted modernization.

DevOps Engineer at Keyteo S.A.

August 1, 2024 - December 1, 2024

DevOps Engineer for Banque PICTET (Private Bank): implemented CI/CD pipelines, containerisation (Docker/Kubernetes), security hardening, GDPR compliance, and on-call support. Led GitLab migration and integration into enterprise workflows; built real-time data integration pipelines and secured REST APIs.

Application Integrator / DevOps at Keyteo S.A.

April 1, 2023 - April 1, 2024

DGNSI – Tax & Land Registry project: designed and implemented CI/CD streams, automation, and cloud-readiness; collaborated with business teams to deliver resilient services with OIDC-based security.

Java Developer / DevOps at Groupe Mutuel

June 1, 2020 - December 1, 2022

System and application software development for health insurance/haematology-related systems; automated update processes, security hardening, GDPR compliance; migrated GitLab setups and integrated IoT/real-time data flows.

Java Developer / DevOps at HORIBA Medical

June 1, 2018 - April 1, 2020

Haematology analysers software (ARM-based): real-time data integration, CI/CD pipelines, Docker/Kubernetes, security hardening and on-call support; contributed to GDPR compliance and software modernization.

Lead Java Developer / DevOps at RTE – French Electricity Transmission Network

February 1, 2018 - May 1, 2018

Led Java backend development and DevOps practices for mission-critical energy systems; implemented scalable batch/streaming data flows and containerized deployments.

Fullstack Java Developer (JEMS) at Edelia

June 1, 2017 - November 1, 2017

Fullstack Java development on enterprise solutions; contributed to backend services, messaging, and data persistence layers; collaborated on front-end work with Angular.

Fullstack Java Developer (STA Portage) at Air France KLM

September 1, 2016 - January 1, 2017

Fullstack Java/enterprise development for travel and logistics platforms; implemented integration patterns and continuous delivery pipelines.

Fullstack JEE Developer & DevOps at Infotel

February 1, 2015 - July 1, 2016

Monaco Telecom project: JEE backend services, middleware integration, and DevOps automation; contributed to service reliability and deployment automation.

C++ / Python / Java Developer at Verifone France

February 1, 2014 - February 1, 2015

Retail/payment systems development; multi-language competencies across C++, Python, Java; contributed to embedded and server-side components.

SOA / Web Services Expert Consultant at ERDF – French Electricity Distribution Network

August 1, 2013 - February 1, 2014

SOA/Web services architecture for utility networks; implemented service-oriented patterns and integration approaches.

Monetique Architect Developer at Orange Caraibes

January 1, 2010 - December 1, 2011

Monetique platform architecture and development; designed scalable payment and messaging integrations for Caribbean operations.

Monetique Developer at Orange Caraibes

November 1, 2008 - December 1, 2009

Monetique development and maintenance; implemented secure payment solutions and messaging interfaces.