Développeur Backend Java/Kotlin Senior (h/f)

🏢 Summary: Senior Java Backend Developer role focused on designing, developing and maintaining reliable, high-performance and scalable backend services in a microservices environment. The position involves continuous improvement, production monitoring, and close collaboration with cross-functional teams to ensure service quality and stability. Strong emphasis on CI/CD practices and cloud-based environments. 🗂️ Requirements: 6–9 years of Java development experience, Proven experience with Spring Boot, Experience building and maintaining microservices, Experience in high-volume production environments, Strong knowledge of CI/CD concepts, Hands-on experience with GitLab pipelines, Knowledge of Azure or ability to work in Azure environments, Ability to collaborate with cross-functional technical teams 📃 Skills: Java, Spring, SpringBoot, Microservices, CI/CD, GitLab, Azure, Docker, Kafka, DB2 🏢 Description: Résumé Le développeur back-end Java senior a pour mission de concevoir, développer et maintenir des services backend fiables, performants et évolutifs, tout en garantissant une expérience utilisateur de qualité. Responsabilités : Concevoir, développer et maintenir des services backend. Contribuer à la qualité du produit en ajoutant de la valeur pour l'utilisateur. Analyser le comportement du service en production et anticiper les dégradations. Participer à l'amélioration continue des services (refactorings, performance, sécurité). Assurer la responsabilité du service post-mise en production. Collaborer avec les équipes Produit, QA, DevOps, Cloud et Architecture. S'inscrire dans une logique orientée résultat. Compétences Requises : 6 à 9 ans d'expérience en développement Java. Expérience confirmée sur Spring Boot et microservices. Travail sur des environnements à forte volumétrie. Maîtrise des concepts CI/CD et pipelines GitLab. Connaissance ou capacité à monter en compétence sur Azure. Aisance en collaboration avec des équipes pluridisciplinaires. Atouts : Expérience avec Docker. Connaissances en Kafka ou systèmes de messaging. Maîtrise d'autres bases de données relationnelles (DB2).

🏢 Summary: Fullstack Java Developer role involving balanced backend and frontend development using Java and ReactJS, with responsibility for unit testing, deployment, and ensuring technical quality and stability of applications. 🗂️ Requirements: Solid experience in Java fullstack development, Strong knowledge of ReactJS, Experience with Ansible and Docker for deployment, Familiarity with PostgreSQL, Ability to write and execute unit tests 📃 Skills: Java, ReactJS, Ansible, Docker, PostgreSQL, UnitTesting 🏢 Description: Résumé: Le rôle principal consiste à rejoindre une équipe de développeurs afin de prendre en charge le développement et les tests unitaires en utilisant le langage Java, répartis de manière équitable entre le backend et le frontend, en utilisant ReactJS pour la partie client. Responsabilités: Développement de solutions en langage Java fullstack (50% backend, 50% frontend). Effectuer des tests unitaires pour assurer la qualité du code. Déploiement des applications avec Ansible et Docker. Assurer la conformité des composants aux exigences techniques et qualitatives. Garantir la qualité technique des produits développés. Contrôler la stabilité technique des applications et résoudre les problèmes techniques. Identifier et signaler les risques de non-respect du planning et des difficultés rencontrées. Proposer des solutions techniques de manière proactive. Participer activement aux ateliers et aux revues d'avancement. Contribuer aux revues de pairs et apprendre des retours. Must Haves: Expérience solide en développement Java (fullstack). Connaissance de ReactJS pour le développement frontend. Compétence dans l'utilisation d'Ansible et Docker pour le déploiement. Familiarité avec PostgreSQL en tant que système de gestion de bases de données. Capacité à effectuer des tests unitaires. Nice to Haves: Connaissance de l'environnement Windows. Expérience en méthodologies Agile/Scrum. Compétences en communication et travail en équipe. Autres Détails: Type de contrat : Temps plein Localisation : Paris

🏢 Summary: Senior Java Developer role focused on designing and building scalable cloud-based technical services using Spring Boot. The position involves developing RESTful APIs, implementing reactive programming, and ensuring application performance and quality. The role also includes CI/CD automation with GitLab and collaboration within an Agile environment. 🗂️ Requirements: Significant experience in Java development, Strong expertise in Spring Boot, Experience designing and developing RESTful APIs, Experience with Git and GitLab CI/CD, Knowledge of reactive programming, Understanding of relational databases, Understanding of NoSQL databases 📃 Skills: Java, Spring, SpringBoot, REST, Git, GitLab, CICD, Reactive, SQL, NoSQL 🏢 Description: Localisation : Suresnes / 2 jours de télétravail par semaine Durée : 3 ans Résumé : Le développeur Java Senior joue un rôle clé dans la conception et le développement de services techniques pour des solutions basées sur le cloud. Ce poste exige une expertise approfondie en programmation Java, notamment avec Spring Boot, ainsi qu'une forte capacité à assurer la performance et la qualité des applications. Responsabilités : Concevoir, développer et maintenir des applications Java robustes et évolutives utilisant Spring Boot. Créer et gérer des APIs RESTful pour intégrer divers systèmes et services. Collaborer avec l'équipe DevOps pour configurer et automatiser les pipelines CI/CD sur GitLab. Mettre en œuvre des solutions de programmation réactive pour améliorer les performances des applications. Participer à des revues de conception technique et de code pour garantir la qualité du code. Mentor et former des développeurs juniors et intermédiaires. Assurer la documentation technique et le contrôle de version à l'aide de Git. Participer aux réunions Agile et contribuer à l'amélioration continue du développement. Compétences : Expérience significative dans le développement Java, avec une expertise en Spring Boot. Maîtrise des APIs RESTful et des principes de conception d'API. Expérience avec Git et GitLab CI/CD pour le contrôle de version et l'intégration continue. Connaissance de la programmation réactive. Bonne compréhension des bases de données relationnelles et NoSQL.

🏢 Summary: Senior Java Developer role focused on designing, integrating and developing projects while ensuring corrective and evolutive maintenance. The position involves unit and integration testing, production deployment preparation, technical documentation, and incident resolution within an agile environment. The role requires strong experience with Java ecosystem tools and DevOps practices. 🗂️ Requirements: Minimum 5 years Java development experience, Strong knowledge of Java APIs and web services, Experience with unit and integration testing, Experience with SQL databases, Proficiency with build and code quality tools, Experience with containerization and CI/CD tools, Knowledge of Spring and Spring Boot frameworks, Experience working in Agile environment 📃 Skills: Java, XML, JSON, REST, SOA, Swagger, JUnit, SQL, Maven, SonarQube, Docker, Spring, SpringBoot, Jenkins, GitLab, Ansible, Kubernetes, Postman, Node, Kafka, XLRelease, Jira, SOAP, ELK 🏢 Description: Résumé En tant que développeur(euse) Java confirmé(e), vous êtes chargé(e) de concevoir, intégrer et développer des projets tout en assurant les maintenances correctives et évolutives. Responsabilités : Assurer la conception, l’intégration et le développement des projets et solutions. Réaliser des tests unitaires et d’intégration sur les développements réalisés. Préparer la mise en production avec les équipes expertes. Gérer et maintenir la documentation fonctionnelle et technique. Assurer l’assistance à l’utilisation des applications. Diagnostiquer et résoudre les dysfonctionnements. Effectuer une veille technologique régulière. Interagir avec les membres des squads dans un contexte agile. Compétences Requises : Minimum 5 ans d'expérience en développement Java (hors alternance/apprentissage). Solide connaissance des API (Java, XML, JSON, REST, SOA, Swagger). Expérience avec Junit, SQL, Maven et SonarQube. Maîtrise de Docker et des frameworks Java (Spring et Spring Boot). Expérience avec Jenkins, Gitlab et Ansible. Connaissance de Kubernetes, Postman, Node, Kafka. Expérience avec XLRelease, Jira et Soap ELK. Autres Détails : Localisation : Montpellier (2 jours de télétravail/3 jours sur site). Démarrage : ASAP

🏢 Summary: Backend Developer role in an e-mobility project focused on building modern, scalable solutions for electric vehicle charging and energy management. The position involves developing high-throughput, multi-tenant SaaS systems using microservices architecture. The role emphasizes performance optimization, scalability, and next-generation backend architecture. 🗂️ Requirements: Experience as Back End Developer, Proven experience with Java or Kotlin, Experience with Spring Boot, Experience with Microservices architecture, Experience with SaaS multitenant high-throughput systems, Proficiency in Object Oriented Design, Experience with relational databases (MySQL or PostgreSQL), Experience with Docker 📃 Skills: Java, Kotlin, SpringBoot, Microservices, SaaS, OOD, MySQL, PostgreSQL, SQL, Docker 🏢 Description: Project for a leader in the e-mobility industry. Join the team and work on comprehensive and modern solutions for charging electric vehicles and energy management. Requirements Experienced Back End Developer. Proven Java/Kotlin experience with Spring Boot framework. Proven experience with Micro-Services Architecture. Proven experience in SaaS multitenant high throughput systems. Proficient in OOD (Object Oriented Design). Proven experience with a relational Database (MySQL/Postgres, etc.) Experience with Docker. A good command of English (min. B2 level) Nice to have Deep knowledge of Hibernate, Knowledge of Kubernetes. Experience with ActiveMQ/RabbitMQ. Proficient in advanced SQL. Familiarity with a public Cloud provider (AWS or GCP or Azure). Experience with non-blocking programming (Vertx). Experience with Event driven architecture Ready to visit and work from the office, if needed, and after prior arrangement of a suitable date. Responsibilities Become an eminent member of our client’s product’s core team Participate in delivering increasingly better programming solutions. Focus on next-gen architecture, scalability and performance. Enhance core capabilities in LOB areas such as Billing, CRM. Assist in overall performance improvements, advanced optimizations

🏢 Summary: Backend Developer role in an e-mobility project focused on building scalable, high-performance solutions for EV charging and energy management. The position involves developing and optimizing microservices-based SaaS systems, enhancing core modules such as Billing and CRM, and driving next-generation architecture improvements. 🗂️ Requirements: Strong experience as Back End Developer, Proven Java or Kotlin with Spring Boot, Experience with Microservices architecture, Experience with SaaS multitenant high-throughput systems, Strong Object-Oriented Design knowledge, Experience with relational databases (MySQL or PostgreSQL), Experience with Docker, Advanced SQL knowledge 📃 Skills: Java, Kotlin, SpringBoot, Microservices, SaaS, OOD, MySQL, PostgreSQL, SQL, Docker, Hibernate, Kubernetes, ActiveMQ, RabbitMQ, AWS, GCP, Azure, Vertx 🏢 Description: Project for a leader in the e-mobility industry. Join the team and work on comprehensive and modern solutions for charging electric vehicles and energy management. Requirements Experienced Back End Developer. Proven Java/Kotlin experience with Spring Boot framework. Proven experience with Micro-Services Architecture. Proven experience in SaaS multitenant high throughput systems. Proficient in OOD (Object Oriented Design). Proven experience with a relational Database (MySQL/Postgres, etc.) Experience with Docker. A good command of English (min. B2 level) Nice to have Deep knowledge of Hibernate, Knowledge of Kubernetes. Experience with ActiveMQ/RabbitMQ. Proficient in advanced SQL. Familiarity with a public Cloud provider (AWS or GCP or Azure). Experience with non-blocking programming (Vertx). Experience with Event driven architecture Ready to visit and work from the office, if needed, and after prior arrangement of a suitable date. Responsibilities Become an eminent member of our client’s product’s core team Participate in delivering increasingly better programming solutions. Focus on next-gen architecture, scalability and performance. Enhance core capabilities in LOB areas such as Billing, CRM. Assist in overall performance improvements, advanced optimizations

🏢 Summary: Senior Backend Developer role focused on building secure, scalable backend systems for a battlefield management platform using Kotlin and Java. The position emphasizes security-first development, cloud deployment on GCP, and ownership of architecture, CI/CD, and dependency vulnerability management. You will ensure high reliability, performance, and compliance with strict security standards. 🗂️ Requirements: 6+ years of backend development experience, Advanced Kotlin knowledge, Advanced Java knowledge, Strong experience with Spring Framework, Expertise in Spring Boot, Expertise in Spring Security, Experience implementing authentication and authorization, Strong understanding of OWASP principles, Experience with encryption and secure coding practices, Experience with OWASP Dependency-Check Maven Plugin, Hands-on experience with Google Cloud Platform, Experience with Kubernetes on GCP, Experience with Cloud Storage and Compute Engine, Experience designing and managing CICD pipelines, Proficiency with GitHub version control 📃 Skills: Kotlin, Java, Spring, SpringBoot, SpringSecurity, OWASP, Encryption, Maven, DependencyCheck, GCP, Kubernetes, CloudStorage, ComputeEngine, GitHub, GitHubActions, CICD, Docker, Prometheus, Grafana, ELK, APIs, Git 🏢 Description: About the Role: We are seeking an experienced Senior Backend Developer with a minimum of 6+ years of expertise in developing backend systems using Kotlin and Java . This role involves working on a battlefield management system , requiring strong security-focused development, robust architecture design, and seamless integration with cloud-based infrastructure. The position demands advanced English skills and a high level of independence , enabling you to drive the development process from concept to delivery . Military experience or prior involvement in the development of military systems is a plus but not mandatory. As a critical contributor, you will ensure the reliability, security, and performance of our systems, with particular emphasis on monitoring and mitigating vulnerabilities in system dependencies. Key Responsibilities: Backend Development: Build and maintain scalable backend systems and APIs using Kotlin/Java and Spring Framework . Security Implementation: Ensure all systems meet stringent security standards, including data protection, authentication, and authorization protocols. Dependency Management: Regularly check for and scan for vulnerabilities in dependencies using tools like the OWASP Dependency-Check Maven Plugin , and mitigate identified risks promptly. Cloud Integration: Deploy and optimize backend services on Google Cloud Platform (GCP) . DevOps Practices: Design and manage CI/CD pipelines. Optimize repository workflows using Github . Collaboration: Coordinate with cross-functional teams, including frontend developers and system architects, to deliver robust solutions. System Optimization: Continuously refine and enhance system performance for battlefield-level reliability. Documentation: Produce clear and detailed documentation for architecture, code, and security processes. Required Skills & Experience: Kotlin/Java & Spring Framework: Advanced knowledge of Kotlin/Java (6+ years preferred). Expertise in Spring Boot, Spring Security , and related modules. Security Expertise: Strong understanding of OWASP , encryption, and secure coding practices. Dependency Management: Familiarity with tools like OWASP Dependency-Check Maven Plugin to scan and mitigate dependency vulnerabilities. Cloud Expertise: Hands-on experience with Google Cloud Platform services like Kubernetes, Cloud Storage, and Compute Engine. DevOps & CI/CD: Proficiency in managing pipelines with tools like GitHub Actions or similar. Experience with GitHub for version control. Independent Work: Demonstrated ability to work autonomously and deliver high-quality results. Advanced English Skills: Excellent verbal and written communication skills. Preferred Qualifications: Previous experience developing systems or products with high security requirements. Certification in Google Cloud Platform technologies. Proficiency with containerization tools like Docker and orchestration frameworks such as Kubernetes . Familiarity with monitoring and logging tools (e.g., Prometheus , Grafana , or ELK Stack ). What We Offer: Competitive salary and comprehensive benefits. Opportunities for professional development and certification. The chance to work on impactful, high-stakes systems. Flexible working hours and [remote/hybrid] options.

🏢 Summary: The role involves designing and developing scalable backend systems in a microservices architecture using Java or Kotlin and Spring. The engineer will influence technical decisions while building payment and subscription platforms with event-driven communication and cloud-based solutions. The position includes working with modern architectural patterns and ensuring high code quality through testing and reviews. 🗂️ Requirements: Strong experience with Java and/or Kotlin, Solid knowledge of Spring and Spring Boot, Hands-on experience with SQL and relational databases, Experience with PostgreSQL, Proven experience with microservices architecture, Experience with event-driven systems, Practical experience with JUnit, Mockito, Testcontainers, Experience with AWS or GCP, Understanding of DDD, CQRS, Hexagonal Architecture, Experience with payment or subscription systems 📃 Skills: Java, Kotlin, Spring, SpringBoot, SQL, PostgreSQL, Microservices, Kafka, JUnit, Mockito, Testcontainers, AWS, GCP, DDD, CQRS, HexagonalArchitecture 🏢 Description: Senior Backend Engineer (Java/Kotlin) We are looking for an experienced Backend Engineer to join a team building modern, scalable systems based on a microservices architecture. This role offers real influence over technical decisions, system architecture, and the quality of delivered solutions—particularly within payment and subscription platforms. Responsibilities Design, develop, and maintain backend systems using Java or Kotlin and the Spring Framework Build and evolve microservices following DDD , CQRS , and Hexagonal Architecture principles Implement event-driven communication , ideally using Apache Kafka Work with relational databases ( PostgreSQL or other SQL databases ) and optimize queries Write unit and integration tests using JUnit, Mockito, and Testcontainers Contribute to the design and development of cloud-based solutions ( AWS or GCP ) Participate in code reviews and drive high engineering standards Collaborate closely with product and engineering teams to deliver business-critical features Requirements Strong experience with Java and/or Kotlin Solid knowledge of Spring / Spring Boot Hands-on experience with SQL and relational databases (preferably PostgreSQL ) Proven background in microservices-based architectures Experience with event-driven systems (Kafka is a strong plus) Practical experience with backend testing (JUnit, Mockito, Testcontainers) Experience working with cloud platforms ( AWS or GCP ) Good understanding of Domain-Driven Design (DDD) , CQRS , and Hexagonal Architecture Must-have: experience with payment systems and/or subscription-based platforms Nice to Have Experience working with high-scale, high-availability systems Knowledge of security and transactional data handling Background in product-driven, Agile environments

🏢 Summary: The offer concerns a Java Full Stack Developer role focused on evolving and modernizing applications from Java 8/11 to Java 21. The position involves technical design, algorithm development, API expertise, performance optimization, and active participation in Agile ceremonies. The role emphasizes robustness, code quality, testing, and continuous improvement within a collaborative team environment. 🗂️ Requirements: Expert-level Java expertise, Expert-level API development expertise, Expert-level algorithm design skills, Experience with Java version migration (8/11 to 21), Ability to design and implement scalable technical solutions, Experience with code reviews and technical documentation, Experience working in Agile environments 📃 Skills: Java, API, Algorithms, Kafka, BPMN, OpenShift, Python, React 🏢 Description: Résumé : La mission principale consiste à fournir une expertise en développement Java Full Stack en collaboration avec l'équipe, le chef de projet et le responsable de la gouvernance des projets SI. Responsabilités : Participer à la conception et au développement des évolutions techniques (de Java 8,11 vers Java 21) en collaboration avec l'équipe. Optimiser les pratiques de conception et de développement. Proposer des solutions techniques et participer aux choix de conceptions et algorithmes. Participer aux cérémonies d'équipe comme le PI Planning et les chiffrages. Concevoir et paramétrer des solutions tout en garantissant stabilité et performance. Implémenter et tester les fonctionnalités développées. Réaliser des revues de code en équipe. Contribuer à la documentation technique. Participer à l'amélioration continue du projet. Promouvoir la culture de la robustesse et de la performance. Must Haves : Expertise en Java (niveau expert) Expertise en API (niveau expert) Expertise en conception d'algorithmes (niveau expert) Nice to Haves : Connaissance des technologies de streaming (KAFKA) Expérience avec l'implémentation de solutions via des workflows BPMN Environnement conteneurisé (Openshift) Compétences en Python 3 Compétences en React 19

🏢 Summary: Full Stack Developer role focused on designing, developing, and maintaining web applications using Angular for the front-end and J2E for the back-end. The position involves contributing to technical specifications, ensuring application quality through testing, and maintaining technical documentation. Strong emphasis is placed on web standards, security, and accessibility compliance. 🗂️ Requirements: Proficiency in Angular, Proficiency in J2E, Strong knowledge of HTML, CSS, JavaScript, Knowledge of RGAA accessibility standards, Experience with Git and SVN, Understanding of object-oriented design principles, Knowledge of web application security principles, Ability to write technical documentation 📃 Skills: Angular, J2E, JavaScript, HTML, CSS, RGAA, Git, SVN, OOP, Security, Jahia, JEE8, Camel, REST, Apache 🏢 Description: Introduction & Résumé Nous recherchons un Développeur Full Stack pour concevoir, développer et maintenir des applications web. Le candidat idéal possédera une maîtrise d'Angular, de J2E, ainsi que des langages et normes web standards. La capacité à travailler en équipe et à produire de la documentation technique de qualité est essentielle. Principales Responsabilités Concevoir, développer et maintenir des applications web en utilisant Angular et/ou Jahia pour le front-end. Développer et maintenir les services du Socle et le Back-end en J2E. Participer à la définition des spécifications techniques et fonctionnelles. Tester et déboguer les applications pour assurer la qualité du produit final. Maintenir la documentation technique. Compétences Requises Maîtrise d'Angular et des langages web standards (HTML, CSS, JavaScript). Maîtrise des règles d'accessibilité (RGAA). Maîtrise de J2E. Expérience avec Git et SVN. Capacité à travailler en équipe et à communiquer efficacement. Bonnes qualités rédactionnelles. Compréhension des principes de conception orientée objet. Bonne compréhension des problématiques de sécurité liées au développement web. Nice to Have Connaissance d'Angular 16. Expérience avec JEE 8. Compétences en Apache Camel. Connaissances sur les API Rest.