> Markdown version of [/jobs/ext/3173025-developpeur-java-react](https://www.wearedevelopers.com/jobs/ext/3173025-developpeur-java-react). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Développeur Java/ React - **Company:** DATAMED RESEARCH - **Location:** Paris, France - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Business Logic, HTML5, Cascading Style Sheets (CSS), Software Quality, DevOps, Gradle, Hibernate (Java), Java Persistence API, JSON, Apache Maven, Scrum Methodology, TypeScript, ReactJS, Spring-boot, Backend, Syntactically Awesome Style Sheets (SASS), Front End Software Development, React Redux, Restful APIs, Microservices - **Published:** September 7, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=3bfcc421bbd295e5 ## About the Role Profil avec un minimum de 3 ans d'expérience. Backend : Java 11 / 17 (selon standard client) Spring Boot (API REST) Spring MVC / Spring Data JPA Hibernate / JPA Architecture microservices Scala (legacy à migrer, compréhension requise) APIs REST / JSON Maven / Gradle Frontend : ReactJS (Hooks, functional components) TypeScript (souvent associé) Redux / Context API (state management) HTML5 / CSS3 / SASS ## Description Dans le cadre d?un projet de modernisation applicative, la mission consiste à accompagner la migration d?une application existante développée en Scala vers une stack Java, tout en conservant et en optimisant les fonctionnalités métiers existantes. Cette migration s?inscrit dans une démarche de standardisation technologique visant à homogénéiser les compétences et faciliter la maintenance à long terme. Le consultant interviendra en tant que développeur Full Stack Java / React, au sein d?une équipe internationale travaillant dans un environnement anglophone. Il contribuera à la refonte back-end en Java (API, logique métier, performance, qualité du code) ainsi qu?aux évolutions front-end en React. La mission implique également une forte collaboration avec les équipes produit, QA et DevOps, dans un contexte agile (Scrum), avec un accent particulier sur la qualité logicielle, la migration progressive des services et la continuité de service. ## Related Videos - [Using backend languages for frontends: Why ClojureScript is an awesome idea!](https://www.wearedevelopers.com/videos/229-using-backend-languages-for-frontends-why-clojurescript-is-an-awesome-idea) - [Shifting Stress to Progress— Understanding DevOps to do DevOps Better](https://www.wearedevelopers.com/videos/268-shifting-stress-to-progress-understanding-devops-to-do-devops-better) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Tips and Tricks for Working with JSON](https://www.wearedevelopers.com/videos/1229-tips-and-tricks-for-working-with-json) - [Web development best practices in 2021](https://www.wearedevelopers.com/videos/280-web-development-best-practices-in-2021) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) ## Related Articles - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [The 7 Most Popular Backend Frameworks for Developers](https://www.wearedevelopers.com/magazine/403-the-7-most-popular-backend-frameworks-for-developers) - [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers)